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annotate src/share/vm/opto/escape.cpp @ 5954:ed4c92f54c2d

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7154997: assert(false) failed: not G1 barrier raw StoreP Summary: Skip only G1 cases and explicitly set global escape state in unsafe cases. Reviewed-by: never
author kvn
date Tue, 20 Mar 2012 13:10:13 -0700
parents ee138854b3a6
children 1d7922586cf6
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1 /*
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2 * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "ci/bcEscapeAnalyzer.hpp"
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27 #include "compiler/compileLog.hpp"
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28 #include "libadt/vectset.hpp"
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29 #include "memory/allocation.hpp"
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30 #include "opto/c2compiler.hpp"
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31 #include "opto/callnode.hpp"
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32 #include "opto/cfgnode.hpp"
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33 #include "opto/compile.hpp"
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34 #include "opto/escape.hpp"
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35 #include "opto/phaseX.hpp"
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36 #include "opto/rootnode.hpp"
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37
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38 ConnectionGraph::ConnectionGraph(Compile * C, PhaseIterGVN *igvn) :
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39 _nodes(C->comp_arena(), C->unique(), C->unique(), NULL),
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40 _collecting(true),
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41 _verify(false),
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42 _compile(C),
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43 _igvn(igvn),
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44 _node_map(C->comp_arena()) {
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45 // Add unknown java object.
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46 add_java_object(C->top(), PointsToNode::GlobalEscape);
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47 phantom_obj = ptnode_adr(C->top()->_idx)->as_JavaObject();
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48 // Add ConP(#NULL) and ConN(#NULL) nodes.
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49 Node* oop_null = igvn->zerocon(T_OBJECT);
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50 assert(oop_null->_idx < nodes_size(), "should be created already");
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51 add_java_object(oop_null, PointsToNode::NoEscape);
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52 null_obj = ptnode_adr(oop_null->_idx)->as_JavaObject();
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53 if (UseCompressedOops) {
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54 Node* noop_null = igvn->zerocon(T_NARROWOOP);
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55 assert(noop_null->_idx < nodes_size(), "should be created already");
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56 map_ideal_node(noop_null, null_obj);
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57 }
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58 _pcmp_neq = NULL; // Should be initialized
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59 _pcmp_eq = NULL;
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60 }
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61
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62 bool ConnectionGraph::has_candidates(Compile *C) {
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63 // EA brings benefits only when the code has allocations and/or locks which
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64 // are represented by ideal Macro nodes.
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65 int cnt = C->macro_count();
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66 for( int i=0; i < cnt; i++ ) {
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67 Node *n = C->macro_node(i);
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68 if ( n->is_Allocate() )
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69 return true;
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70 if( n->is_Lock() ) {
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71 Node* obj = n->as_Lock()->obj_node()->uncast();
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72 if( !(obj->is_Parm() || obj->is_Con()) )
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73 return true;
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74 }
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75 }
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76 return false;
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77 }
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78
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79 void ConnectionGraph::do_analysis(Compile *C, PhaseIterGVN *igvn) {
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80 Compile::TracePhase t2("escapeAnalysis", &Phase::_t_escapeAnalysis, true);
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81 ResourceMark rm;
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82
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83 // Add ConP#NULL and ConN#NULL nodes before ConnectionGraph construction
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84 // to create space for them in ConnectionGraph::_nodes[].
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85 Node* oop_null = igvn->zerocon(T_OBJECT);
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86 Node* noop_null = igvn->zerocon(T_NARROWOOP);
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87 ConnectionGraph* congraph = new(C->comp_arena()) ConnectionGraph(C, igvn);
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88 // Perform escape analysis
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89 if (congraph->compute_escape()) {
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90 // There are non escaping objects.
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91 C->set_congraph(congraph);
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92 }
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93 // Cleanup.
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94 if (oop_null->outcnt() == 0)
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95 igvn->hash_delete(oop_null);
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96 if (noop_null->outcnt() == 0)
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97 igvn->hash_delete(noop_null);
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98 }
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99
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100 bool ConnectionGraph::compute_escape() {
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101 Compile* C = _compile;
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102 PhaseGVN* igvn = _igvn;
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103
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104 // Worklists used by EA.
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105 Unique_Node_List delayed_worklist;
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106 GrowableArray<Node*> alloc_worklist;
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107 GrowableArray<Node*> ptr_cmp_worklist;
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108 GrowableArray<Node*> storestore_worklist;
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109 GrowableArray<PointsToNode*> ptnodes_worklist;
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110 GrowableArray<JavaObjectNode*> java_objects_worklist;
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111 GrowableArray<JavaObjectNode*> non_escaped_worklist;
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112 GrowableArray<FieldNode*> oop_fields_worklist;
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113 DEBUG_ONLY( GrowableArray<Node*> addp_worklist; )
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114
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115 { Compile::TracePhase t3("connectionGraph", &Phase::_t_connectionGraph, true);
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116
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117 // 1. Populate Connection Graph (CG) with PointsTo nodes.
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118 ideal_nodes.map(C->unique(), NULL); // preallocate space
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119 // Initialize worklist
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120 if (C->root() != NULL) {
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121 ideal_nodes.push(C->root());
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122 }
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123 for( uint next = 0; next < ideal_nodes.size(); ++next ) {
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124 Node* n = ideal_nodes.at(next);
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125 // Create PointsTo nodes and add them to Connection Graph. Called
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126 // only once per ideal node since ideal_nodes is Unique_Node list.
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127 add_node_to_connection_graph(n, &delayed_worklist);
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128 PointsToNode* ptn = ptnode_adr(n->_idx);
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129 if (ptn != NULL) {
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130 ptnodes_worklist.append(ptn);
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131 if (ptn->is_JavaObject()) {
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132 java_objects_worklist.append(ptn->as_JavaObject());
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133 if ((n->is_Allocate() || n->is_CallStaticJava()) &&
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134 (ptn->escape_state() < PointsToNode::GlobalEscape)) {
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135 // Only allocations and java static calls results are interesting.
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136 non_escaped_worklist.append(ptn->as_JavaObject());
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137 }
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138 } else if (ptn->is_Field() && ptn->as_Field()->is_oop()) {
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139 oop_fields_worklist.append(ptn->as_Field());
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140 }
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141 }
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142 if (n->is_MergeMem()) {
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143 // Collect all MergeMem nodes to add memory slices for
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144 // scalar replaceable objects in split_unique_types().
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145 _mergemem_worklist.append(n->as_MergeMem());
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146 } else if (OptimizePtrCompare && n->is_Cmp() &&
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147 (n->Opcode() == Op_CmpP || n->Opcode() == Op_CmpN)) {
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148 // Collect compare pointers nodes.
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149 ptr_cmp_worklist.append(n);
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diff changeset
150 } else if (n->is_MemBarStoreStore()) {
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151 // Collect all MemBarStoreStore nodes so that depending on the
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152 // escape status of the associated Allocate node some of them
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153 // may be eliminated.
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154 storestore_worklist.append(n);
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diff changeset
155 #ifdef ASSERT
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156 } else if(n->is_AddP()) {
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157 // Collect address nodes for graph verification.
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158 addp_worklist.append(n);
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159 #endif
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160 }
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161 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) {
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162 Node* m = n->fast_out(i); // Get user
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163 ideal_nodes.push(m);
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164 }
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165 }
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166 if (non_escaped_worklist.length() == 0) {
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167 _collecting = false;
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168 return false; // Nothing to do.
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169 }
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170 // Add final simple edges to graph.
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171 while(delayed_worklist.size() > 0) {
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172 Node* n = delayed_worklist.pop();
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173 add_final_edges(n);
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174 }
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175 int ptnodes_length = ptnodes_worklist.length();
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176
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177 #ifdef ASSERT
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178 if (VerifyConnectionGraph) {
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179 // Verify that no new simple edges could be created and all
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180 // local vars has edges.
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181 _verify = true;
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182 for (int next = 0; next < ptnodes_length; ++next) {
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183 PointsToNode* ptn = ptnodes_worklist.at(next);
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184 add_final_edges(ptn->ideal_node());
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185 if (ptn->is_LocalVar() && ptn->edge_count() == 0) {
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186 ptn->dump();
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187 assert(ptn->as_LocalVar()->edge_count() > 0, "sanity");
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188 }
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189 }
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190 _verify = false;
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191 }
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192 #endif
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193
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194 // 2. Finish Graph construction by propagating references to all
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195 // java objects through graph.
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196 if (!complete_connection_graph(ptnodes_worklist, non_escaped_worklist,
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diff changeset
197 java_objects_worklist, oop_fields_worklist)) {
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198 // All objects escaped or hit time or iterations limits.
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199 _collecting = false;
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200 return false;
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201 }
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202
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203 // 3. Adjust scalar_replaceable state of nonescaping objects and push
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204 // scalar replaceable allocations on alloc_worklist for processing
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205 // in split_unique_types().
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206 int non_escaped_length = non_escaped_worklist.length();
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207 for (int next = 0; next < non_escaped_length; next++) {
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208 JavaObjectNode* ptn = non_escaped_worklist.at(next);
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209 if (ptn->escape_state() == PointsToNode::NoEscape &&
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diff changeset
210 ptn->scalar_replaceable()) {
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211 adjust_scalar_replaceable_state(ptn);
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diff changeset
212 if (ptn->scalar_replaceable()) {
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diff changeset
213 alloc_worklist.append(ptn->ideal_node());
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214 }
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215 }
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216 }
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diff changeset
217
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218 #ifdef ASSERT
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219 if (VerifyConnectionGraph) {
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220 // Verify that graph is complete - no new edges could be added or needed.
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diff changeset
221 verify_connection_graph(ptnodes_worklist, non_escaped_worklist,
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222 java_objects_worklist, addp_worklist);
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diff changeset
223 }
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diff changeset
224 assert(C->unique() == nodes_size(), "no new ideal nodes should be added during ConnectionGraph build");
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diff changeset
225 assert(null_obj->escape_state() == PointsToNode::NoEscape &&
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diff changeset
226 null_obj->edge_count() == 0 &&
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diff changeset
227 !null_obj->arraycopy_src() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff changeset
228 !null_obj->arraycopy_dst(), "sanity");
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diff changeset
229 #endif
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diff changeset
230
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diff changeset
231 _collecting = false;
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diff changeset
232
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233 } // TracePhase t3("connectionGraph")
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234
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diff changeset
235 // 4. Optimize ideal graph based on EA information.
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diff changeset
236 bool has_non_escaping_obj = (non_escaped_worklist.length() > 0);
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diff changeset
237 if (has_non_escaping_obj) {
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diff changeset
238 optimize_ideal_graph(ptr_cmp_worklist, storestore_worklist);
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diff changeset
239 }
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diff changeset
240
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff changeset
241 #ifndef PRODUCT
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diff changeset
242 if (PrintEscapeAnalysis) {
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diff changeset
243 dump(ptnodes_worklist); // Dump ConnectionGraph
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244 }
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diff changeset
245 #endif
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246
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diff changeset
247 bool has_scalar_replaceable_candidates = (alloc_worklist.length() > 0);
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diff changeset
248 #ifdef ASSERT
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diff changeset
249 if (VerifyConnectionGraph) {
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diff changeset
250 int alloc_length = alloc_worklist.length();
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diff changeset
251 for (int next = 0; next < alloc_length; ++next) {
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diff changeset
252 Node* n = alloc_worklist.at(next);
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diff changeset
253 PointsToNode* ptn = ptnode_adr(n->_idx);
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254 assert(ptn->escape_state() == PointsToNode::NoEscape && ptn->scalar_replaceable(), "sanity");
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255 }
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256 }
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diff changeset
257 #endif
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258
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259 // 5. Separate memory graph for scalar replaceable allcations.
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diff changeset
260 if (has_scalar_replaceable_candidates &&
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diff changeset
261 C->AliasLevel() >= 3 && EliminateAllocations) {
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diff changeset
262 // Now use the escape information to create unique types for
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff changeset
263 // scalar replaceable objects.
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diff changeset
264 split_unique_types(alloc_worklist);
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diff changeset
265 if (C->failing()) return false;
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diff changeset
266 C->print_method("After Escape Analysis", 2);
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diff changeset
267
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diff changeset
268 #ifdef ASSERT
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269 } else if (Verbose && (PrintEscapeAnalysis || PrintEliminateAllocations)) {
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270 tty->print("=== No allocations eliminated for ");
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diff changeset
271 C->method()->print_short_name();
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diff changeset
272 if(!EliminateAllocations) {
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diff changeset
273 tty->print(" since EliminateAllocations is off ===");
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274 } else if(!has_scalar_replaceable_candidates) {
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275 tty->print(" since there are no scalar replaceable candidates ===");
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276 } else if(C->AliasLevel() < 3) {
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277 tty->print(" since AliasLevel < 3 ===");
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278 }
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279 tty->cr();
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280 #endif
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281 }
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282 return has_non_escaping_obj;
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283 }
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284
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285 // Populate Connection Graph with PointsTo nodes and create simple
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diff changeset
286 // connection graph edges.
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287 void ConnectionGraph::add_node_to_connection_graph(Node *n, Unique_Node_List *delayed_worklist) {
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diff changeset
288 assert(!_verify, "this method sould not be called for verification");
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diff changeset
289 PhaseGVN* igvn = _igvn;
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290 uint n_idx = n->_idx;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
291 PointsToNode* n_ptn = ptnode_adr(n_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
292 if (n_ptn != NULL)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
293 return; // No need to redefine PointsTo node during first iteration.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
294
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
295 if (n->is_Call()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
296 // Arguments to allocation and locking don't escape.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
297 if (n->is_AbstractLock()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
298 // Put Lock and Unlock nodes on IGVN worklist to process them during
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
299 // first IGVN optimization when escape information is still available.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
300 record_for_optimizer(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
301 } else if (n->is_Allocate()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
302 add_call_node(n->as_Call());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
303 record_for_optimizer(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
304 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
305 if (n->is_CallStaticJava()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
306 const char* name = n->as_CallStaticJava()->_name;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
307 if (name != NULL && strcmp(name, "uncommon_trap") == 0)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
308 return; // Skip uncommon traps
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
309 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
310 // Don't mark as processed since call's arguments have to be processed.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
311 delayed_worklist->push(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
312 // Check if a call returns an object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
313 if (n->as_Call()->returns_pointer() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
314 n->as_Call()->proj_out(TypeFunc::Parms) != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
315 add_call_node(n->as_Call());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
316 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
317 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
318 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
319 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
320 // Put this check here to process call arguments since some call nodes
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
321 // point to phantom_obj.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
322 if (n_ptn == phantom_obj || n_ptn == null_obj)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
323 return; // Skip predefined nodes.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
324
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
325 int opcode = n->Opcode();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
326 switch (opcode) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
327 case Op_AddP: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
328 Node* base = get_addp_base(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
329 PointsToNode* ptn_base = ptnode_adr(base->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
330 // Field nodes are created for all field types. They are used in
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
331 // adjust_scalar_replaceable_state() and split_unique_types().
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
332 // Note, non-oop fields will have only base edges in Connection
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
333 // Graph because such fields are not used for oop loads and stores.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
334 int offset = address_offset(n, igvn);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
335 add_field(n, PointsToNode::NoEscape, offset);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
336 if (ptn_base == NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
337 delayed_worklist->push(n); // Process it later.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
338 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
339 n_ptn = ptnode_adr(n_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
340 add_base(n_ptn->as_Field(), ptn_base);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
341 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
342 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
343 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
344 case Op_CastX2P: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
345 map_ideal_node(n, phantom_obj);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
346 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
347 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
348 case Op_CastPP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
349 case Op_CheckCastPP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
350 case Op_EncodeP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
351 case Op_DecodeN: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
352 add_local_var_and_edge(n, PointsToNode::NoEscape,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
353 n->in(1), delayed_worklist);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
354 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
355 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
356 case Op_CMoveP: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
357 add_local_var(n, PointsToNode::NoEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
358 // Do not add edges during first iteration because some could be
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
359 // not defined yet.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
360 delayed_worklist->push(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
361 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
362 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
363 case Op_ConP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
364 case Op_ConN: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
365 // assume all oop constants globally escape except for null
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
366 PointsToNode::EscapeState es;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
367 if (igvn->type(n) == TypePtr::NULL_PTR ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
368 igvn->type(n) == TypeNarrowOop::NULL_PTR) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
369 es = PointsToNode::NoEscape;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
370 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
371 es = PointsToNode::GlobalEscape;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
372 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
373 add_java_object(n, es);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
374 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
375 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
376 case Op_CreateEx: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
377 // assume that all exception objects globally escape
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
378 add_java_object(n, PointsToNode::GlobalEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
379 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
380 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
381 case Op_LoadKlass:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
382 case Op_LoadNKlass: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
383 // Unknown class is loaded
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
384 map_ideal_node(n, phantom_obj);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
385 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
386 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
387 case Op_LoadP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
388 case Op_LoadN:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
389 case Op_LoadPLocked: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
390 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
391 // ThreadLocal has RawPrt type.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
392 const Type* t = igvn->type(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
393 if (t->make_ptr() != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
394 Node* adr = n->in(MemNode::Address);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
395 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
396 if (!adr->is_AddP()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
397 assert(igvn->type(adr)->isa_rawptr(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
398 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
399 assert((ptnode_adr(adr->_idx) == NULL ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
400 ptnode_adr(adr->_idx)->as_Field()->is_oop()), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
401 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
402 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
403 add_local_var_and_edge(n, PointsToNode::NoEscape,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
404 adr, delayed_worklist);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
405 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
406 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
407 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
408 case Op_Parm: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
409 map_ideal_node(n, phantom_obj);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
410 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
411 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
412 case Op_PartialSubtypeCheck: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
413 // Produces Null or notNull and is used in only in CmpP so
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
414 // phantom_obj could be used.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
415 map_ideal_node(n, phantom_obj); // Result is unknown
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
416 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
417 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
418 case Op_Phi: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
419 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
420 // ThreadLocal has RawPrt type.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
421 const Type* t = n->as_Phi()->type();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
422 if (t->make_ptr() != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
423 add_local_var(n, PointsToNode::NoEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
424 // Do not add edges during first iteration because some could be
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
425 // not defined yet.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
426 delayed_worklist->push(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
427 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
428 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
429 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
430 case Op_Proj: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
431 // we are only interested in the oop result projection from a call
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
432 if (n->as_Proj()->_con == TypeFunc::Parms && n->in(0)->is_Call() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
433 n->in(0)->as_Call()->returns_pointer()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
434 add_local_var_and_edge(n, PointsToNode::NoEscape,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
435 n->in(0), delayed_worklist);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
436 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
437 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
438 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
439 case Op_Rethrow: // Exception object escapes
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
440 case Op_Return: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
441 if (n->req() > TypeFunc::Parms &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
442 igvn->type(n->in(TypeFunc::Parms))->isa_oopptr()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
443 // Treat Return value as LocalVar with GlobalEscape escape state.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
444 add_local_var_and_edge(n, PointsToNode::GlobalEscape,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
445 n->in(TypeFunc::Parms), delayed_worklist);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
446 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
447 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
448 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
449 case Op_StoreP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
450 case Op_StoreN:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
451 case Op_StorePConditional:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
452 case Op_CompareAndSwapP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
453 case Op_CompareAndSwapN: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
454 Node* adr = n->in(MemNode::Address);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
455 const Type *adr_type = igvn->type(adr);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
456 adr_type = adr_type->make_ptr();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
457 if (adr_type->isa_oopptr() ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
458 (opcode == Op_StoreP || opcode == Op_StoreN) &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
459 (adr_type == TypeRawPtr::NOTNULL &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
460 adr->in(AddPNode::Address)->is_Proj() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
461 adr->in(AddPNode::Address)->in(0)->is_Allocate())) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
462 delayed_worklist->push(n); // Process it later.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
463 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
464 assert(adr->is_AddP(), "expecting an AddP");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
465 if (adr_type == TypeRawPtr::NOTNULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
466 // Verify a raw address for a store captured by Initialize node.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
467 int offs = (int)igvn->find_intptr_t_con(adr->in(AddPNode::Offset), Type::OffsetBot);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
468 assert(offs != Type::OffsetBot, "offset must be a constant");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
469 }
5954
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
470 #endif
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
471 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
472 // Ignore copy the displaced header to the BoxNode (OSR compilation).
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
473 if (adr->is_BoxLock())
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
474 break;
5954
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
475 // Stored value escapes in unsafe access.
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
476 if ((opcode == Op_StoreP) && (adr_type == TypeRawPtr::BOTTOM)) {
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
477 // Pointer stores in G1 barriers looks like unsafe access.
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
478 // Ignore such stores to be able scalar replace non-escaping
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
479 // allocations.
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
480 if (UseG1GC && adr->is_AddP()) {
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
481 Node* base = get_addp_base(adr);
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
482 if (base->Opcode() == Op_LoadP &&
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
483 base->in(MemNode::Address)->is_AddP()) {
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
484 adr = base->in(MemNode::Address);
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
485 Node* tls = get_addp_base(adr);
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
486 if (tls->Opcode() == Op_ThreadLocal) {
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
487 int offs = (int)igvn->find_intptr_t_con(adr->in(AddPNode::Offset), Type::OffsetBot);
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
488 if (offs == in_bytes(JavaThread::satb_mark_queue_offset() +
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
489 PtrQueue::byte_offset_of_buf())) {
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
490 break; // G1 pre barier previous oop value store.
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
491 }
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
492 if (offs == in_bytes(JavaThread::dirty_card_queue_offset() +
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
493 PtrQueue::byte_offset_of_buf())) {
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
494 break; // G1 post barier card address store.
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
495 }
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
496 }
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
497 }
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
498 }
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
499 delayed_worklist->push(n); // Process unsafe access later.
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
500 break;
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
501 }
5954
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
502 #ifdef ASSERT
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
503 n->dump(1);
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
504 assert(false, "not unsafe or G1 barrier raw StoreP");
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
505 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
506 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
507 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
508 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
509 case Op_AryEq:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
510 case Op_StrComp:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
511 case Op_StrEquals:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
512 case Op_StrIndexOf: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
513 add_local_var(n, PointsToNode::ArgEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
514 delayed_worklist->push(n); // Process it later.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
515 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
516 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
517 case Op_ThreadLocal: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
518 add_java_object(n, PointsToNode::ArgEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
519 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
520 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
521 default:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
522 ; // Do nothing for nodes not related to EA.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
523 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
524 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
525 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
526
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
527 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
528 #define ELSE_FAIL(name) \
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
529 /* Should not be called for not pointer type. */ \
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
530 n->dump(1); \
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
531 assert(false, name); \
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
532 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
533 #else
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
534 #define ELSE_FAIL(name) \
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
535 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
536 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
537
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
538 // Add final simple edges to graph.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
539 void ConnectionGraph::add_final_edges(Node *n) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
540 PointsToNode* n_ptn = ptnode_adr(n->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
541 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
542 if (_verify && n_ptn->is_JavaObject())
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
543 return; // This method does not change graph for JavaObject.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
544 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
545
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
546 if (n->is_Call()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
547 process_call_arguments(n->as_Call());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
548 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
549 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
550 assert(n->is_Store() || n->is_LoadStore() ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
551 (n_ptn != NULL) && (n_ptn->ideal_node() != NULL),
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
552 "node should be registered already");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
553 int opcode = n->Opcode();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
554 switch (opcode) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
555 case Op_AddP: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
556 Node* base = get_addp_base(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
557 PointsToNode* ptn_base = ptnode_adr(base->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
558 assert(ptn_base != NULL, "field's base should be registered");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
559 add_base(n_ptn->as_Field(), ptn_base);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
560 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
561 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
562 case Op_CastPP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
563 case Op_CheckCastPP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
564 case Op_EncodeP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
565 case Op_DecodeN: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
566 add_local_var_and_edge(n, PointsToNode::NoEscape,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
567 n->in(1), NULL);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
568 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
569 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
570 case Op_CMoveP: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
571 for (uint i = CMoveNode::IfFalse; i < n->req(); i++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
572 Node* in = n->in(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
573 if (in == NULL)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
574 continue; // ignore NULL
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
575 Node* uncast_in = in->uncast();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
576 if (uncast_in->is_top() || uncast_in == n)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
577 continue; // ignore top or inputs which go back this node
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
578 PointsToNode* ptn = ptnode_adr(in->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
579 assert(ptn != NULL, "node should be registered");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
580 add_edge(n_ptn, ptn);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
581 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
582 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
583 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
584 case Op_LoadP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
585 case Op_LoadN:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
586 case Op_LoadPLocked: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
587 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
588 // ThreadLocal has RawPrt type.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
589 const Type* t = _igvn->type(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
590 if (t->make_ptr() != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
591 Node* adr = n->in(MemNode::Address);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
592 add_local_var_and_edge(n, PointsToNode::NoEscape, adr, NULL);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
593 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
594 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
595 ELSE_FAIL("Op_LoadP");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
596 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
597 case Op_Phi: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
598 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
599 // ThreadLocal has RawPrt type.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
600 const Type* t = n->as_Phi()->type();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
601 if (t->make_ptr() != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
602 for (uint i = 1; i < n->req(); i++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
603 Node* in = n->in(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
604 if (in == NULL)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
605 continue; // ignore NULL
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
606 Node* uncast_in = in->uncast();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
607 if (uncast_in->is_top() || uncast_in == n)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
608 continue; // ignore top or inputs which go back this node
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
609 PointsToNode* ptn = ptnode_adr(in->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
610 assert(ptn != NULL, "node should be registered");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
611 add_edge(n_ptn, ptn);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
612 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
613 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
614 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
615 ELSE_FAIL("Op_Phi");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
616 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
617 case Op_Proj: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
618 // we are only interested in the oop result projection from a call
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
619 if (n->as_Proj()->_con == TypeFunc::Parms && n->in(0)->is_Call() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
620 n->in(0)->as_Call()->returns_pointer()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
621 add_local_var_and_edge(n, PointsToNode::NoEscape, n->in(0), NULL);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
622 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
623 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
624 ELSE_FAIL("Op_Proj");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
625 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
626 case Op_Rethrow: // Exception object escapes
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
627 case Op_Return: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
628 if (n->req() > TypeFunc::Parms &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
629 _igvn->type(n->in(TypeFunc::Parms))->isa_oopptr()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
630 // Treat Return value as LocalVar with GlobalEscape escape state.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
631 add_local_var_and_edge(n, PointsToNode::GlobalEscape,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
632 n->in(TypeFunc::Parms), NULL);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
633 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
634 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
635 ELSE_FAIL("Op_Return");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
636 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
637 case Op_StoreP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
638 case Op_StoreN:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
639 case Op_StorePConditional:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
640 case Op_CompareAndSwapP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
641 case Op_CompareAndSwapN: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
642 Node* adr = n->in(MemNode::Address);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
643 const Type *adr_type = _igvn->type(adr);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
644 adr_type = adr_type->make_ptr();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
645 if (adr_type->isa_oopptr() ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
646 (opcode == Op_StoreP || opcode == Op_StoreN) &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
647 (adr_type == TypeRawPtr::NOTNULL &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
648 adr->in(AddPNode::Address)->is_Proj() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
649 adr->in(AddPNode::Address)->in(0)->is_Allocate())) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
650 // Point Address to Value
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
651 PointsToNode* adr_ptn = ptnode_adr(adr->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
652 assert(adr_ptn != NULL &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
653 adr_ptn->as_Field()->is_oop(), "node should be registered");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
654 Node *val = n->in(MemNode::ValueIn);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
655 PointsToNode* ptn = ptnode_adr(val->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
656 assert(ptn != NULL, "node should be registered");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
657 add_edge(adr_ptn, ptn);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
658 break;
5954
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
659 } else if ((opcode == Op_StoreP) && (adr_type == TypeRawPtr::BOTTOM)) {
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
660 // Stored value escapes in unsafe access.
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
661 Node *val = n->in(MemNode::ValueIn);
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
662 PointsToNode* ptn = ptnode_adr(val->_idx);
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
663 assert(ptn != NULL, "node should be registered");
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
664 ptn->set_escape_state(PointsToNode::GlobalEscape);
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
665 // Add edge to object for unsafe access with offset.
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
666 PointsToNode* adr_ptn = ptnode_adr(adr->_idx);
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
667 assert(adr_ptn != NULL, "node should be registered");
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
668 if (adr_ptn->is_Field()) {
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
669 assert(adr_ptn->as_Field()->is_oop(), "should be oop field");
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
670 add_edge(adr_ptn, ptn);
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
671 }
ed4c92f54c2d 7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents: 5948
diff changeset
672 break;
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
673 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
674 ELSE_FAIL("Op_StoreP");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
675 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
676 case Op_AryEq:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
677 case Op_StrComp:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
678 case Op_StrEquals:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
679 case Op_StrIndexOf: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
680 // char[] arrays passed to string intrinsic do not escape but
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
681 // they are not scalar replaceable. Adjust escape state for them.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
682 // Start from in(2) edge since in(1) is memory edge.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
683 for (uint i = 2; i < n->req(); i++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
684 Node* adr = n->in(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
685 const Type* at = _igvn->type(adr);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
686 if (!adr->is_top() && at->isa_ptr()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
687 assert(at == Type::TOP || at == TypePtr::NULL_PTR ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
688 at->isa_ptr() != NULL, "expecting a pointer");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
689 if (adr->is_AddP()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
690 adr = get_addp_base(adr);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
691 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
692 PointsToNode* ptn = ptnode_adr(adr->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
693 assert(ptn != NULL, "node should be registered");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
694 add_edge(n_ptn, ptn);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
695 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
696 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
697 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
698 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
699 default: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
700 // This method should be called only for EA specific nodes which may
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
701 // miss some edges when they were created.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
702 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
703 n->dump(1);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
704 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
705 guarantee(false, "unknown node");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
706 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
707 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
708 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
709 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
710
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
711 void ConnectionGraph::add_call_node(CallNode* call) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
712 assert(call->returns_pointer(), "only for call which returns pointer");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
713 uint call_idx = call->_idx;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
714 if (call->is_Allocate()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
715 Node* k = call->in(AllocateNode::KlassNode);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
716 const TypeKlassPtr* kt = k->bottom_type()->isa_klassptr();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
717 assert(kt != NULL, "TypeKlassPtr required.");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
718 ciKlass* cik = kt->klass();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
719 PointsToNode::EscapeState es = PointsToNode::NoEscape;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
720 bool scalar_replaceable = true;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
721 if (call->is_AllocateArray()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
722 if (!cik->is_array_klass()) { // StressReflectiveCode
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
723 es = PointsToNode::GlobalEscape;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
724 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
725 int length = call->in(AllocateNode::ALength)->find_int_con(-1);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
726 if (length < 0 || length > EliminateAllocationArraySizeLimit) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
727 // Not scalar replaceable if the length is not constant or too big.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
728 scalar_replaceable = false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
729 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
730 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
731 } else { // Allocate instance
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
732 if (cik->is_subclass_of(_compile->env()->Thread_klass()) ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
733 !cik->is_instance_klass() || // StressReflectiveCode
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
734 cik->as_instance_klass()->has_finalizer()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
735 es = PointsToNode::GlobalEscape;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
736 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
737 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
738 add_java_object(call, es);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
739 PointsToNode* ptn = ptnode_adr(call_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
740 if (!scalar_replaceable && ptn->scalar_replaceable()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
741 ptn->set_scalar_replaceable(false);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
742 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
743 } else if (call->is_CallStaticJava()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
744 // Call nodes could be different types:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
745 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
746 // 1. CallDynamicJavaNode (what happened during call is unknown):
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
747 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
748 // - mapped to GlobalEscape JavaObject node if oop is returned;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
749 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
750 // - all oop arguments are escaping globally;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
751 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
752 // 2. CallStaticJavaNode (execute bytecode analysis if possible):
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
753 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
754 // - the same as CallDynamicJavaNode if can't do bytecode analysis;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
755 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
756 // - mapped to GlobalEscape JavaObject node if unknown oop is returned;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
757 // - mapped to NoEscape JavaObject node if non-escaping object allocated
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
758 // during call is returned;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
759 // - mapped to ArgEscape LocalVar node pointed to object arguments
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
760 // which are returned and does not escape during call;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
761 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
762 // - oop arguments escaping status is defined by bytecode analysis;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
763 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
764 // For a static call, we know exactly what method is being called.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
765 // Use bytecode estimator to record whether the call's return value escapes.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
766 ciMethod* meth = call->as_CallJava()->method();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
767 if (meth == NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
768 const char* name = call->as_CallStaticJava()->_name;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
769 assert(strncmp(name, "_multianewarray", 15) == 0, "TODO: add failed case check");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
770 // Returns a newly allocated unescaped object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
771 add_java_object(call, PointsToNode::NoEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
772 ptnode_adr(call_idx)->set_scalar_replaceable(false);
4122
cc81b9c09bbb 7112478: after 7105605 JRuby bench_define_method_methods.rb fails with NPE
kvn
parents: 4115
diff changeset
773 } else {
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
774 BCEscapeAnalyzer* call_analyzer = meth->get_bcea();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
775 call_analyzer->copy_dependencies(_compile->dependencies());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
776 if (call_analyzer->is_return_allocated()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
777 // Returns a newly allocated unescaped object, simply
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
778 // update dependency information.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
779 // Mark it as NoEscape so that objects referenced by
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
780 // it's fields will be marked as NoEscape at least.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
781 add_java_object(call, PointsToNode::NoEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
782 ptnode_adr(call_idx)->set_scalar_replaceable(false);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
783 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
784 // Determine whether any arguments are returned.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
785 const TypeTuple* d = call->tf()->domain();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
786 bool ret_arg = false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
787 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
788 if (d->field_at(i)->isa_ptr() != NULL &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
789 call_analyzer->is_arg_returned(i - TypeFunc::Parms)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
790 ret_arg = true;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
791 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
792 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
793 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
794 if (ret_arg) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
795 add_local_var(call, PointsToNode::ArgEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
796 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
797 // Returns unknown object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
798 map_ideal_node(call, phantom_obj);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
799 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
800 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
801 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
802 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
803 // An other type of call, assume the worst case:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
804 // returned value is unknown and globally escapes.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
805 assert(call->Opcode() == Op_CallDynamicJava, "add failed case check");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
806 map_ideal_node(call, phantom_obj);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
807 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
808 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
809
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
810 void ConnectionGraph::process_call_arguments(CallNode *call) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
811 bool is_arraycopy = false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
812 switch (call->Opcode()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
813 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
814 case Op_Allocate:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
815 case Op_AllocateArray:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
816 case Op_Lock:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
817 case Op_Unlock:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
818 assert(false, "should be done already");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
819 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
820 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
821 case Op_CallLeafNoFP:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
822 is_arraycopy = (call->as_CallLeaf()->_name != NULL &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
823 strstr(call->as_CallLeaf()->_name, "arraycopy") != 0);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
824 // fall through
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
825 case Op_CallLeaf: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
826 // Stub calls, objects do not escape but they are not scale replaceable.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
827 // Adjust escape state for outgoing arguments.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
828 const TypeTuple * d = call->tf()->domain();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
829 bool src_has_oops = false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
830 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
831 const Type* at = d->field_at(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
832 Node *arg = call->in(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
833 const Type *aat = _igvn->type(arg);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
834 if (arg->is_top() || !at->isa_ptr() || !aat->isa_ptr())
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
835 continue;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
836 if (arg->is_AddP()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
837 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
838 // The inline_native_clone() case when the arraycopy stub is called
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
839 // after the allocation before Initialize and CheckCastPP nodes.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
840 // Or normal arraycopy for object arrays case.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
841 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
842 // Set AddP's base (Allocate) as not scalar replaceable since
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
843 // pointer to the base (with offset) is passed as argument.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
844 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
845 arg = get_addp_base(arg);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
846 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
847 PointsToNode* arg_ptn = ptnode_adr(arg->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
848 assert(arg_ptn != NULL, "should be registered");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
849 PointsToNode::EscapeState arg_esc = arg_ptn->escape_state();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
850 if (is_arraycopy || arg_esc < PointsToNode::ArgEscape) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
851 assert(aat == Type::TOP || aat == TypePtr::NULL_PTR ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
852 aat->isa_ptr() != NULL, "expecting an Ptr");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
853 bool arg_has_oops = aat->isa_oopptr() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
854 (aat->isa_oopptr()->klass() == NULL || aat->isa_instptr() ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
855 (aat->isa_aryptr() && aat->isa_aryptr()->klass()->is_obj_array_klass()));
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
856 if (i == TypeFunc::Parms) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
857 src_has_oops = arg_has_oops;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
858 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
859 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
860 // src or dst could be j.l.Object when other is basic type array:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
861 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
862 // arraycopy(char[],0,Object*,0,size);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
863 // arraycopy(Object*,0,char[],0,size);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
864 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
865 // Don't add edges in such cases.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
866 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
867 bool arg_is_arraycopy_dest = src_has_oops && is_arraycopy &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
868 arg_has_oops && (i > TypeFunc::Parms);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
869 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
870 if (!(is_arraycopy ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
871 call->as_CallLeaf()->_name != NULL &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
872 (strcmp(call->as_CallLeaf()->_name, "g1_wb_pre") == 0 ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
873 strcmp(call->as_CallLeaf()->_name, "g1_wb_post") == 0 ))
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
874 ) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
875 call->dump();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
876 assert(false, "EA: unexpected CallLeaf");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
877 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
878 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
879 // Always process arraycopy's destination object since
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
880 // we need to add all possible edges to references in
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
881 // source object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
882 if (arg_esc >= PointsToNode::ArgEscape &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
883 !arg_is_arraycopy_dest) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
884 continue;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
885 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
886 set_escape_state(arg_ptn, PointsToNode::ArgEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
887 if (arg_is_arraycopy_dest) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
888 Node* src = call->in(TypeFunc::Parms);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
889 if (src->is_AddP()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
890 src = get_addp_base(src);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
891 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
892 PointsToNode* src_ptn = ptnode_adr(src->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
893 assert(src_ptn != NULL, "should be registered");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
894 if (arg_ptn != src_ptn) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
895 // Special arraycopy edge:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
896 // A destination object's field can't have the source object
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
897 // as base since objects escape states are not related.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
898 // Only escape state of destination object's fields affects
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
899 // escape state of fields in source object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
900 add_arraycopy(call, PointsToNode::ArgEscape, src_ptn, arg_ptn);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
901 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
902 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
903 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
904 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
905 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
906 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
907 case Op_CallStaticJava: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
908 // For a static call, we know exactly what method is being called.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
909 // Use bytecode estimator to record the call's escape affects
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
910 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
911 const char* name = call->as_CallStaticJava()->_name;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
912 assert((name == NULL || strcmp(name, "uncommon_trap") != 0), "normal calls only");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
913 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
914 ciMethod* meth = call->as_CallJava()->method();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
915 BCEscapeAnalyzer* call_analyzer = (meth !=NULL) ? meth->get_bcea() : NULL;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
916 // fall-through if not a Java method or no analyzer information
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
917 if (call_analyzer != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
918 PointsToNode* call_ptn = ptnode_adr(call->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
919 const TypeTuple* d = call->tf()->domain();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
920 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
921 const Type* at = d->field_at(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
922 int k = i - TypeFunc::Parms;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
923 Node* arg = call->in(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
924 PointsToNode* arg_ptn = ptnode_adr(arg->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
925 if (at->isa_ptr() != NULL &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
926 call_analyzer->is_arg_returned(k)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
927 // The call returns arguments.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
928 if (call_ptn != NULL) { // Is call's result used?
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
929 assert(call_ptn->is_LocalVar(), "node should be registered");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
930 assert(arg_ptn != NULL, "node should be registered");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
931 add_edge(call_ptn, arg_ptn);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
932 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
933 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
934 if (at->isa_oopptr() != NULL &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
935 arg_ptn->escape_state() < PointsToNode::GlobalEscape) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
936 if (!call_analyzer->is_arg_stack(k)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
937 // The argument global escapes
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
938 set_escape_state(arg_ptn, PointsToNode::GlobalEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
939 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
940 set_escape_state(arg_ptn, PointsToNode::ArgEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
941 if (!call_analyzer->is_arg_local(k)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
942 // The argument itself doesn't escape, but any fields might
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
943 set_fields_escape_state(arg_ptn, PointsToNode::GlobalEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
944 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
945 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
946 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
947 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
948 if (call_ptn != NULL && call_ptn->is_LocalVar()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
949 // The call returns arguments.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
950 assert(call_ptn->edge_count() > 0, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
951 if (!call_analyzer->is_return_local()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
952 // Returns also unknown object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
953 add_edge(call_ptn, phantom_obj);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
954 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
955 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
956 break;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
957 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
958 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
959 default: {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
960 // Fall-through here if not a Java method or no analyzer information
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
961 // or some other type of call, assume the worst case: all arguments
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
962 // globally escape.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
963 const TypeTuple* d = call->tf()->domain();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
964 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
965 const Type* at = d->field_at(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
966 if (at->isa_oopptr() != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
967 Node* arg = call->in(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
968 if (arg->is_AddP()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
969 arg = get_addp_base(arg);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
970 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
971 assert(ptnode_adr(arg->_idx) != NULL, "should be defined already");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
972 set_escape_state(ptnode_adr(arg->_idx), PointsToNode::GlobalEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
973 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
974 }
4122
cc81b9c09bbb 7112478: after 7105605 JRuby bench_define_method_methods.rb fails with NPE
kvn
parents: 4115
diff changeset
975 }
cc81b9c09bbb 7112478: after 7105605 JRuby bench_define_method_methods.rb fails with NPE
kvn
parents: 4115
diff changeset
976 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
977 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
978
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
979
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
980 // Finish Graph construction.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
981 bool ConnectionGraph::complete_connection_graph(
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
982 GrowableArray<PointsToNode*>& ptnodes_worklist,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
983 GrowableArray<JavaObjectNode*>& non_escaped_worklist,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
984 GrowableArray<JavaObjectNode*>& java_objects_worklist,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
985 GrowableArray<FieldNode*>& oop_fields_worklist) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
986 // Normally only 1-3 passes needed to build Connection Graph depending
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
987 // on graph complexity. Observed 8 passes in jvm2008 compiler.compiler.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
988 // Set limit to 20 to catch situation when something did go wrong and
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
989 // bailout Escape Analysis.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
990 // Also limit build time to 30 sec (60 in debug VM).
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
991 #define CG_BUILD_ITER_LIMIT 20
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
992 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
993 #define CG_BUILD_TIME_LIMIT 60.0
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
994 #else
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
995 #define CG_BUILD_TIME_LIMIT 30.0
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
996 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
997
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
998 // Propagate GlobalEscape and ArgEscape escape states and check that
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
999 // we still have non-escaping objects. The method pushs on _worklist
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1000 // Field nodes which reference phantom_object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1001 if (!find_non_escaped_objects(ptnodes_worklist, non_escaped_worklist)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1002 return false; // Nothing to do.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1003 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1004 // Now propagate references to all JavaObject nodes.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1005 int java_objects_length = java_objects_worklist.length();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1006 elapsedTimer time;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1007 int new_edges = 1;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1008 int iterations = 0;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1009 do {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1010 while ((new_edges > 0) &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1011 (iterations++ < CG_BUILD_ITER_LIMIT) &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1012 (time.seconds() < CG_BUILD_TIME_LIMIT)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1013 time.start();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1014 new_edges = 0;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1015 // Propagate references to phantom_object for nodes pushed on _worklist
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1016 // by find_non_escaped_objects() and find_field_value().
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1017 new_edges += add_java_object_edges(phantom_obj, false);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1018 for (int next = 0; next < java_objects_length; ++next) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1019 JavaObjectNode* ptn = java_objects_worklist.at(next);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1020 new_edges += add_java_object_edges(ptn, true);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1021 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1022 if (new_edges > 0) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1023 // Update escape states on each iteration if graph was updated.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1024 if (!find_non_escaped_objects(ptnodes_worklist, non_escaped_worklist)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1025 return false; // Nothing to do.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1026 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1027 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1028 time.stop();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1029 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1030 if ((iterations < CG_BUILD_ITER_LIMIT) &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1031 (time.seconds() < CG_BUILD_TIME_LIMIT)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1032 time.start();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1033 // Find fields which have unknown value.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1034 int fields_length = oop_fields_worklist.length();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1035 for (int next = 0; next < fields_length; next++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1036 FieldNode* field = oop_fields_worklist.at(next);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1037 if (field->edge_count() == 0) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1038 new_edges += find_field_value(field);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1039 // This code may added new edges to phantom_object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1040 // Need an other cycle to propagate references to phantom_object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1041 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1042 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1043 time.stop();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1044 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1045 new_edges = 0; // Bailout
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1046 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1047 } while (new_edges > 0);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1048
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1049 // Bailout if passed limits.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1050 if ((iterations >= CG_BUILD_ITER_LIMIT) ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1051 (time.seconds() >= CG_BUILD_TIME_LIMIT)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1052 Compile* C = _compile;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1053 if (C->log() != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1054 C->log()->begin_elem("connectionGraph_bailout reason='reached ");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1055 C->log()->text("%s", (iterations >= CG_BUILD_ITER_LIMIT) ? "iterations" : "time");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1056 C->log()->end_elem(" limit'");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1057 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1058 assert(false, err_msg("infinite EA connection graph build (%f sec, %d iterations) with %d nodes and worklist size %d",
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1059 time.seconds(), iterations, nodes_size(), ptnodes_worklist.length()));
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1060 // Possible infinite build_connection_graph loop,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1061 // bailout (no changes to ideal graph were made).
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1062 return false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1063 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1064 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1065 if (Verbose && PrintEscapeAnalysis) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1066 tty->print_cr("EA: %d iterations to build connection graph with %d nodes and worklist size %d",
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1067 iterations, nodes_size(), ptnodes_worklist.length());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1068 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1069 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1070
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1071 #undef CG_BUILD_ITER_LIMIT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1072 #undef CG_BUILD_TIME_LIMIT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1073
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1074 // Find fields initialized by NULL for non-escaping Allocations.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1075 int non_escaped_length = non_escaped_worklist.length();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1076 for (int next = 0; next < non_escaped_length; next++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1077 JavaObjectNode* ptn = non_escaped_worklist.at(next);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1078 PointsToNode::EscapeState es = ptn->escape_state();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1079 assert(es <= PointsToNode::ArgEscape, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1080 if (es == PointsToNode::NoEscape) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1081 if (find_init_values(ptn, null_obj, _igvn) > 0) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1082 // Adding references to NULL object does not change escape states
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1083 // since it does not escape. Also no fields are added to NULL object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1084 add_java_object_edges(null_obj, false);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1085 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1086 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1087 Node* n = ptn->ideal_node();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1088 if (n->is_Allocate()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1089 // The object allocated by this Allocate node will never be
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1090 // seen by an other thread. Mark it so that when it is
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1091 // expanded no MemBarStoreStore is added.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1092 InitializeNode* ini = n->as_Allocate()->initialization();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1093 if (ini != NULL)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1094 ini->set_does_not_escape();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1095 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1096 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1097 return true; // Finished graph construction.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1098 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1099
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1100 // Propagate GlobalEscape and ArgEscape escape states to all nodes
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1101 // and check that we still have non-escaping java objects.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1102 bool ConnectionGraph::find_non_escaped_objects(GrowableArray<PointsToNode*>& ptnodes_worklist,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1103 GrowableArray<JavaObjectNode*>& non_escaped_worklist) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1104 GrowableArray<PointsToNode*> escape_worklist;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1105 // First, put all nodes with GlobalEscape and ArgEscape states on worklist.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1106 int ptnodes_length = ptnodes_worklist.length();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1107 for (int next = 0; next < ptnodes_length; ++next) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1108 PointsToNode* ptn = ptnodes_worklist.at(next);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1109 if (ptn->escape_state() >= PointsToNode::ArgEscape ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1110 ptn->fields_escape_state() >= PointsToNode::ArgEscape) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1111 escape_worklist.push(ptn);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1112 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1113 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1114 // Set escape states to referenced nodes (edges list).
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1115 while (escape_worklist.length() > 0) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1116 PointsToNode* ptn = escape_worklist.pop();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1117 PointsToNode::EscapeState es = ptn->escape_state();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1118 PointsToNode::EscapeState field_es = ptn->fields_escape_state();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1119 if (ptn->is_Field() && ptn->as_Field()->is_oop() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1120 es >= PointsToNode::ArgEscape) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1121 // GlobalEscape or ArgEscape state of field means it has unknown value.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1122 if (add_edge(ptn, phantom_obj)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1123 // New edge was added
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1124 add_field_uses_to_worklist(ptn->as_Field());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1125 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1126 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1127 for (EdgeIterator i(ptn); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1128 PointsToNode* e = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1129 if (e->is_Arraycopy()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1130 assert(ptn->arraycopy_dst(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1131 // Propagate only fields escape state through arraycopy edge.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1132 if (e->fields_escape_state() < field_es) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1133 set_fields_escape_state(e, field_es);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1134 escape_worklist.push(e);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1135 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1136 } else if (es >= field_es) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1137 // fields_escape_state is also set to 'es' if it is less than 'es'.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1138 if (e->escape_state() < es) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1139 set_escape_state(e, es);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1140 escape_worklist.push(e);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1141 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1142 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1143 // Propagate field escape state.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1144 bool es_changed = false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1145 if (e->fields_escape_state() < field_es) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1146 set_fields_escape_state(e, field_es);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1147 es_changed = true;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1148 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1149 if ((e->escape_state() < field_es) &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1150 e->is_Field() && ptn->is_JavaObject() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1151 e->as_Field()->is_oop()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1152 // Change escape state of referenced fileds.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1153 set_escape_state(e, field_es);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1154 es_changed = true;;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1155 } else if (e->escape_state() < es) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1156 set_escape_state(e, es);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1157 es_changed = true;;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1158 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1159 if (es_changed) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1160 escape_worklist.push(e);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1161 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1162 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1163 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1164 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1165 // Remove escaped objects from non_escaped list.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1166 for (int next = non_escaped_worklist.length()-1; next >= 0 ; --next) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1167 JavaObjectNode* ptn = non_escaped_worklist.at(next);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1168 if (ptn->escape_state() >= PointsToNode::GlobalEscape) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1169 non_escaped_worklist.delete_at(next);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1170 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1171 if (ptn->escape_state() == PointsToNode::NoEscape) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1172 // Find fields in non-escaped allocations which have unknown value.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1173 find_init_values(ptn, phantom_obj, NULL);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1174 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1175 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1176 return (non_escaped_worklist.length() > 0);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1177 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1178
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1179 // Add all references to JavaObject node by walking over all uses.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1180 int ConnectionGraph::add_java_object_edges(JavaObjectNode* jobj, bool populate_worklist) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1181 int new_edges = 0;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1182 if (populate_worklist) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1183 // Populate _worklist by uses of jobj's uses.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1184 for (UseIterator i(jobj); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1185 PointsToNode* use = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1186 if (use->is_Arraycopy())
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1187 continue;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1188 add_uses_to_worklist(use);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1189 if (use->is_Field() && use->as_Field()->is_oop()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1190 // Put on worklist all field's uses (loads) and
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1191 // related field nodes (same base and offset).
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1192 add_field_uses_to_worklist(use->as_Field());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1193 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1194 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1195 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1196 while(_worklist.length() > 0) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1197 PointsToNode* use = _worklist.pop();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1198 if (PointsToNode::is_base_use(use)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1199 // Add reference from jobj to field and from field to jobj (field's base).
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1200 use = PointsToNode::get_use_node(use)->as_Field();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1201 if (add_base(use->as_Field(), jobj)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1202 new_edges++;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1203 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1204 continue;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1205 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1206 assert(!use->is_JavaObject(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1207 if (use->is_Arraycopy()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1208 if (jobj == null_obj) // NULL object does not have field edges
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1209 continue;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1210 // Added edge from Arraycopy node to arraycopy's source java object
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1211 if (add_edge(use, jobj)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1212 jobj->set_arraycopy_src();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1213 new_edges++;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1214 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1215 // and stop here.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1216 continue;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1217 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1218 if (!add_edge(use, jobj))
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1219 continue; // No new edge added, there was such edge already.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1220 new_edges++;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1221 if (use->is_LocalVar()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1222 add_uses_to_worklist(use);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1223 if (use->arraycopy_dst()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1224 for (EdgeIterator i(use); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1225 PointsToNode* e = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1226 if (e->is_Arraycopy()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1227 if (jobj == null_obj) // NULL object does not have field edges
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1228 continue;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1229 // Add edge from arraycopy's destination java object to Arraycopy node.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1230 if (add_edge(jobj, e)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1231 new_edges++;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1232 jobj->set_arraycopy_dst();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1233 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1234 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1235 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1236 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1237 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1238 // Added new edge to stored in field values.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1239 // Put on worklist all field's uses (loads) and
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1240 // related field nodes (same base and offset).
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1241 add_field_uses_to_worklist(use->as_Field());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1242 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1243 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1244 return new_edges;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1245 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1246
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1247 // Put on worklist all related field nodes.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1248 void ConnectionGraph::add_field_uses_to_worklist(FieldNode* field) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1249 assert(field->is_oop(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1250 int offset = field->offset();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1251 add_uses_to_worklist(field);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1252 // Loop over all bases of this field and push on worklist Field nodes
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1253 // with the same offset and base (since they may reference the same field).
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1254 for (BaseIterator i(field); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1255 PointsToNode* base = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1256 add_fields_to_worklist(field, base);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1257 // Check if the base was source object of arraycopy and go over arraycopy's
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1258 // destination objects since values stored to a field of source object are
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1259 // accessable by uses (loads) of fields of destination objects.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1260 if (base->arraycopy_src()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1261 for (UseIterator j(base); j.has_next(); j.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1262 PointsToNode* arycp = j.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1263 if (arycp->is_Arraycopy()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1264 for (UseIterator k(arycp); k.has_next(); k.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1265 PointsToNode* abase = k.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1266 if (abase->arraycopy_dst() && abase != base) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1267 // Look for the same arracopy reference.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1268 add_fields_to_worklist(field, abase);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1269 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1270 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1271 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1272 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1273 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1274 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1275 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1276
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1277 // Put on worklist all related field nodes.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1278 void ConnectionGraph::add_fields_to_worklist(FieldNode* field, PointsToNode* base) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1279 int offset = field->offset();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1280 if (base->is_LocalVar()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1281 for (UseIterator j(base); j.has_next(); j.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1282 PointsToNode* f = j.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1283 if (PointsToNode::is_base_use(f)) { // Field
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1284 f = PointsToNode::get_use_node(f);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1285 if (f == field || !f->as_Field()->is_oop())
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1286 continue;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1287 int offs = f->as_Field()->offset();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1288 if (offs == offset || offset == Type::OffsetBot || offs == Type::OffsetBot) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1289 add_to_worklist(f);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1290 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1291 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1292 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1293 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1294 assert(base->is_JavaObject(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1295 if (// Skip phantom_object since it is only used to indicate that
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1296 // this field's content globally escapes.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1297 (base != phantom_obj) &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1298 // NULL object node does not have fields.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1299 (base != null_obj)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1300 for (EdgeIterator i(base); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1301 PointsToNode* f = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1302 // Skip arraycopy edge since store to destination object field
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1303 // does not update value in source object field.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1304 if (f->is_Arraycopy()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1305 assert(base->arraycopy_dst(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1306 continue;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1307 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1308 if (f == field || !f->as_Field()->is_oop())
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1309 continue;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1310 int offs = f->as_Field()->offset();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1311 if (offs == offset || offset == Type::OffsetBot || offs == Type::OffsetBot) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1312 add_to_worklist(f);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1313 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1314 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1315 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1316 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1317 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1318
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1319 // Find fields which have unknown value.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1320 int ConnectionGraph::find_field_value(FieldNode* field) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1321 // Escaped fields should have init value already.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1322 assert(field->escape_state() == PointsToNode::NoEscape, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1323 int new_edges = 0;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1324 for (BaseIterator i(field); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1325 PointsToNode* base = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1326 if (base->is_JavaObject()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1327 // Skip Allocate's fields which will be processed later.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1328 if (base->ideal_node()->is_Allocate())
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1329 return 0;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1330 assert(base == null_obj, "only NULL ptr base expected here");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1331 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1332 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1333 if (add_edge(field, phantom_obj)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1334 // New edge was added
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1335 new_edges++;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1336 add_field_uses_to_worklist(field);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1337 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1338 return new_edges;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1339 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1340
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1341 // Find fields initializing values for allocations.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1342 int ConnectionGraph::find_init_values(JavaObjectNode* pta, PointsToNode* init_val, PhaseTransform* phase) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1343 assert(pta->escape_state() == PointsToNode::NoEscape, "Not escaped Allocate nodes only");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1344 int new_edges = 0;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1345 Node* alloc = pta->ideal_node();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1346 if (init_val == phantom_obj) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1347 // Do nothing for Allocate nodes since its fields values are "known".
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1348 if (alloc->is_Allocate())
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1349 return 0;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1350 assert(alloc->as_CallStaticJava(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1351 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1352 if (alloc->as_CallStaticJava()->method() == NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1353 const char* name = alloc->as_CallStaticJava()->_name;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1354 assert(strncmp(name, "_multianewarray", 15) == 0, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1355 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1356 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1357 // Non-escaped allocation returned from Java or runtime call have
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1358 // unknown values in fields.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1359 for (EdgeIterator i(pta); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1360 PointsToNode* ptn = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1361 if (ptn->is_Field() && ptn->as_Field()->is_oop()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1362 if (add_edge(ptn, phantom_obj)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1363 // New edge was added
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1364 new_edges++;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1365 add_field_uses_to_worklist(ptn->as_Field());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1366 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1367 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1368 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1369 return new_edges;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1370 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1371 assert(init_val == null_obj, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1372 // Do nothing for Call nodes since its fields values are unknown.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1373 if (!alloc->is_Allocate())
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1374 return 0;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1375
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1376 InitializeNode* ini = alloc->as_Allocate()->initialization();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1377 Compile* C = _compile;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1378 bool visited_bottom_offset = false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1379 GrowableArray<int> offsets_worklist;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1380
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1381 // Check if an oop field's initializing value is recorded and add
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1382 // a corresponding NULL if field's value if it is not recorded.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1383 // Connection Graph does not record a default initialization by NULL
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1384 // captured by Initialize node.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1385 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1386 for (EdgeIterator i(pta); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1387 PointsToNode* ptn = i.get(); // Field (AddP)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1388 if (!ptn->is_Field() || !ptn->as_Field()->is_oop())
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1389 continue; // Not oop field
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1390 int offset = ptn->as_Field()->offset();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1391 if (offset == Type::OffsetBot) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1392 if (!visited_bottom_offset) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1393 // OffsetBot is used to reference array's element,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1394 // always add reference to NULL to all Field nodes since we don't
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1395 // known which element is referenced.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1396 if (add_edge(ptn, null_obj)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1397 // New edge was added
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1398 new_edges++;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1399 add_field_uses_to_worklist(ptn->as_Field());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1400 visited_bottom_offset = true;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1401 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1402 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1403 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1404 // Check only oop fields.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1405 const Type* adr_type = ptn->ideal_node()->as_AddP()->bottom_type();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1406 if (adr_type->isa_rawptr()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1407 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1408 // Raw pointers are used for initializing stores so skip it
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1409 // since it should be recorded already
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1410 Node* base = get_addp_base(ptn->ideal_node());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1411 assert(adr_type->isa_rawptr() && base->is_Proj() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1412 (base->in(0) == alloc),"unexpected pointer type");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1413 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1414 continue;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1415 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1416 if (!offsets_worklist.contains(offset)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1417 offsets_worklist.append(offset);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1418 Node* value = NULL;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1419 if (ini != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1420 BasicType ft = UseCompressedOops ? T_NARROWOOP : T_OBJECT;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1421 Node* store = ini->find_captured_store(offset, type2aelembytes(ft), phase);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1422 if (store != NULL && store->is_Store()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1423 value = store->in(MemNode::ValueIn);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1424 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1425 // There could be initializing stores which follow allocation.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1426 // For example, a volatile field store is not collected
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1427 // by Initialize node.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1428 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1429 // Need to check for dependent loads to separate such stores from
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1430 // stores which follow loads. For now, add initial value NULL so
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1431 // that compare pointers optimization works correctly.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1432 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1433 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1434 if (value == NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1435 // A field's initializing value was not recorded. Add NULL.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1436 if (add_edge(ptn, null_obj)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1437 // New edge was added
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1438 new_edges++;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1439 add_field_uses_to_worklist(ptn->as_Field());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1440 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1441 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1442 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1443 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1444 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1445 return new_edges;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1446 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1447
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1448 // Adjust scalar_replaceable state after Connection Graph is built.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1449 void ConnectionGraph::adjust_scalar_replaceable_state(JavaObjectNode* jobj) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1450 // Search for non-escaping objects which are not scalar replaceable
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1451 // and mark them to propagate the state to referenced objects.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1452
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1453 // 1. An object is not scalar replaceable if the field into which it is
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1454 // stored has unknown offset (stored into unknown element of an array).
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1455 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1456 for (UseIterator i(jobj); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1457 PointsToNode* use = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1458 assert(!use->is_Arraycopy(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1459 if (use->is_Field()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1460 FieldNode* field = use->as_Field();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1461 assert(field->is_oop() && field->scalar_replaceable() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1462 field->fields_escape_state() == PointsToNode::NoEscape, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1463 if (field->offset() == Type::OffsetBot) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1464 jobj->set_scalar_replaceable(false);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1465 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1466 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1467 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1468 assert(use->is_Field() || use->is_LocalVar(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1469 // 2. An object is not scalar replaceable if it is merged with other objects.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1470 for (EdgeIterator j(use); j.has_next(); j.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1471 PointsToNode* ptn = j.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1472 if (ptn->is_JavaObject() && ptn != jobj) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1473 // Mark all objects.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1474 jobj->set_scalar_replaceable(false);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1475 ptn->set_scalar_replaceable(false);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1476 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1477 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1478 if (!jobj->scalar_replaceable()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1479 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1480 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1481 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1482
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1483 for (EdgeIterator j(jobj); j.has_next(); j.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1484 // Non-escaping object node should point only to field nodes.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1485 FieldNode* field = j.get()->as_Field();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1486 int offset = field->as_Field()->offset();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1487
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1488 // 3. An object is not scalar replaceable if it has a field with unknown
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1489 // offset (array's element is accessed in loop).
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1490 if (offset == Type::OffsetBot) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1491 jobj->set_scalar_replaceable(false);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1492 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1493 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1494 // 4. Currently an object is not scalar replaceable if a LoadStore node
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1495 // access its field since the field value is unknown after it.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1496 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1497 Node* n = field->ideal_node();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1498 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1499 if (n->fast_out(i)->is_LoadStore()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1500 jobj->set_scalar_replaceable(false);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1501 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1502 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1503 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1504
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1505 // 5. Or the address may point to more then one object. This may produce
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1506 // the false positive result (set not scalar replaceable)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1507 // since the flow-insensitive escape analysis can't separate
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1508 // the case when stores overwrite the field's value from the case
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1509 // when stores happened on different control branches.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1510 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1511 // Note: it will disable scalar replacement in some cases:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1512 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1513 // Point p[] = new Point[1];
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1514 // p[0] = new Point(); // Will be not scalar replaced
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1515 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1516 // but it will save us from incorrect optimizations in next cases:
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1517 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1518 // Point p[] = new Point[1];
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1519 // if ( x ) p[0] = new Point(); // Will be not scalar replaced
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1520 //
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1521 if (field->base_count() > 1) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1522 for (BaseIterator i(field); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1523 PointsToNode* base = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1524 // Don't take into account LocalVar nodes which
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1525 // may point to only one object which should be also
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1526 // this field's base by now.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1527 if (base->is_JavaObject() && base != jobj) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1528 // Mark all bases.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1529 jobj->set_scalar_replaceable(false);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1530 base->set_scalar_replaceable(false);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1531 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1532 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1533 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1534 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1535 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1536
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1537 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1538 void ConnectionGraph::verify_connection_graph(
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1539 GrowableArray<PointsToNode*>& ptnodes_worklist,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1540 GrowableArray<JavaObjectNode*>& non_escaped_worklist,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1541 GrowableArray<JavaObjectNode*>& java_objects_worklist,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1542 GrowableArray<Node*>& addp_worklist) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1543 // Verify that graph is complete - no new edges could be added.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1544 int java_objects_length = java_objects_worklist.length();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1545 int non_escaped_length = non_escaped_worklist.length();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1546 int new_edges = 0;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1547 for (int next = 0; next < java_objects_length; ++next) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1548 JavaObjectNode* ptn = java_objects_worklist.at(next);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1549 new_edges += add_java_object_edges(ptn, true);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1550 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1551 assert(new_edges == 0, "graph was not complete");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1552 // Verify that escape state is final.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1553 int length = non_escaped_worklist.length();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1554 find_non_escaped_objects(ptnodes_worklist, non_escaped_worklist);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1555 assert((non_escaped_length == non_escaped_worklist.length()) &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1556 (non_escaped_length == length) &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1557 (_worklist.length() == 0), "escape state was not final");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1558
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1559 // Verify fields information.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1560 int addp_length = addp_worklist.length();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1561 for (int next = 0; next < addp_length; ++next ) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1562 Node* n = addp_worklist.at(next);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1563 FieldNode* field = ptnode_adr(n->_idx)->as_Field();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1564 if (field->is_oop()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1565 // Verify that field has all bases
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1566 Node* base = get_addp_base(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1567 PointsToNode* ptn = ptnode_adr(base->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1568 if (ptn->is_JavaObject()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1569 assert(field->has_base(ptn->as_JavaObject()), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1570 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1571 assert(ptn->is_LocalVar(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1572 for (EdgeIterator i(ptn); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1573 PointsToNode* e = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1574 if (e->is_JavaObject()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1575 assert(field->has_base(e->as_JavaObject()), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1576 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1577 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1578 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1579 // Verify that all fields have initializing values.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1580 if (field->edge_count() == 0) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1581 field->dump();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1582 assert(field->edge_count() > 0, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1583 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1584 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1585 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1586 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1587 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1588
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1589 // Optimize ideal graph.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1590 void ConnectionGraph::optimize_ideal_graph(GrowableArray<Node*>& ptr_cmp_worklist,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1591 GrowableArray<Node*>& storestore_worklist) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1592 Compile* C = _compile;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1593 PhaseIterGVN* igvn = _igvn;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1594 if (EliminateLocks) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1595 // Mark locks before changing ideal graph.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1596 int cnt = C->macro_count();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1597 for( int i=0; i < cnt; i++ ) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1598 Node *n = C->macro_node(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1599 if (n->is_AbstractLock()) { // Lock and Unlock nodes
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1600 AbstractLockNode* alock = n->as_AbstractLock();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1601 if (!alock->is_non_esc_obj()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1602 if (not_global_escape(alock->obj_node())) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1603 assert(!alock->is_eliminated() || alock->is_coarsened(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1604 // The lock could be marked eliminated by lock coarsening
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1605 // code during first IGVN before EA. Replace coarsened flag
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1606 // to eliminate all associated locks/unlocks.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1607 alock->set_non_esc_obj();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1608 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1609 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1610 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1611 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1612 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1613
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1614 if (OptimizePtrCompare) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1615 // Add ConI(#CC_GT) and ConI(#CC_EQ).
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1616 _pcmp_neq = igvn->makecon(TypeInt::CC_GT);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1617 _pcmp_eq = igvn->makecon(TypeInt::CC_EQ);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1618 // Optimize objects compare.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1619 while (ptr_cmp_worklist.length() != 0) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1620 Node *n = ptr_cmp_worklist.pop();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1621 Node *res = optimize_ptr_compare(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1622 if (res != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1623 #ifndef PRODUCT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1624 if (PrintOptimizePtrCompare) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1625 tty->print_cr("++++ Replaced: %d %s(%d,%d) --> %s", n->_idx, (n->Opcode() == Op_CmpP ? "CmpP" : "CmpN"), n->in(1)->_idx, n->in(2)->_idx, (res == _pcmp_eq ? "EQ" : "NotEQ"));
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1626 if (Verbose) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1627 n->dump(1);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1628 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1629 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1630 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1631 igvn->replace_node(n, res);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1632 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1633 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1634 // cleanup
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1635 if (_pcmp_neq->outcnt() == 0)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1636 igvn->hash_delete(_pcmp_neq);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1637 if (_pcmp_eq->outcnt() == 0)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1638 igvn->hash_delete(_pcmp_eq);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1639 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1640
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1641 // For MemBarStoreStore nodes added in library_call.cpp, check
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1642 // escape status of associated AllocateNode and optimize out
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1643 // MemBarStoreStore node if the allocated object never escapes.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1644 while (storestore_worklist.length() != 0) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1645 Node *n = storestore_worklist.pop();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1646 MemBarStoreStoreNode *storestore = n ->as_MemBarStoreStore();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1647 Node *alloc = storestore->in(MemBarNode::Precedent)->in(0);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1648 assert (alloc->is_Allocate(), "storestore should point to AllocateNode");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1649 if (not_global_escape(alloc)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1650 MemBarNode* mb = MemBarNode::make(C, Op_MemBarCPUOrder, Compile::AliasIdxBot);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1651 mb->init_req(TypeFunc::Memory, storestore->in(TypeFunc::Memory));
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1652 mb->init_req(TypeFunc::Control, storestore->in(TypeFunc::Control));
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1653 igvn->register_new_node_with_optimizer(mb);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1654 igvn->replace_node(storestore, mb);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1655 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1656 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1657 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1658
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1659 // Optimize objects compare.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1660 Node* ConnectionGraph::optimize_ptr_compare(Node* n) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1661 assert(OptimizePtrCompare, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1662 PointsToNode* ptn1 = ptnode_adr(n->in(1)->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1663 PointsToNode* ptn2 = ptnode_adr(n->in(2)->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1664 JavaObjectNode* jobj1 = unique_java_object(n->in(1));
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1665 JavaObjectNode* jobj2 = unique_java_object(n->in(2));
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1666 assert(ptn1->is_JavaObject() || ptn1->is_LocalVar(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1667 assert(ptn2->is_JavaObject() || ptn2->is_LocalVar(), "sanity");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1668
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1669 // Check simple cases first.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1670 if (jobj1 != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1671 if (jobj1->escape_state() == PointsToNode::NoEscape) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1672 if (jobj1 == jobj2) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1673 // Comparing the same not escaping object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1674 return _pcmp_eq;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1675 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1676 Node* obj = jobj1->ideal_node();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1677 // Comparing not escaping allocation.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1678 if ((obj->is_Allocate() || obj->is_CallStaticJava()) &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1679 !ptn2->points_to(jobj1)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1680 return _pcmp_neq; // This includes nullness check.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1681 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1682 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1683 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1684 if (jobj2 != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1685 if (jobj2->escape_state() == PointsToNode::NoEscape) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1686 Node* obj = jobj2->ideal_node();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1687 // Comparing not escaping allocation.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1688 if ((obj->is_Allocate() || obj->is_CallStaticJava()) &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1689 !ptn1->points_to(jobj2)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1690 return _pcmp_neq; // This includes nullness check.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1691 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1692 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1693 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1694 if (jobj1 != NULL && jobj1 != phantom_obj &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1695 jobj2 != NULL && jobj2 != phantom_obj &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1696 jobj1->ideal_node()->is_Con() &&
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1697 jobj2->ideal_node()->is_Con()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1698 // Klass or String constants compare. Need to be careful with
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1699 // compressed pointers - compare types of ConN and ConP instead of nodes.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1700 const Type* t1 = jobj1->ideal_node()->bottom_type()->make_ptr();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1701 const Type* t2 = jobj2->ideal_node()->bottom_type()->make_ptr();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1702 assert(t1 != NULL && t2 != NULL, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1703 if (t1->make_ptr() == t2->make_ptr()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1704 return _pcmp_eq;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1705 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1706 return _pcmp_neq;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1707 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1708 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1709 if (ptn1->meet(ptn2)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1710 return NULL; // Sets are not disjoint
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1711 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1712
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1713 // Sets are disjoint.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1714 bool set1_has_unknown_ptr = ptn1->points_to(phantom_obj);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1715 bool set2_has_unknown_ptr = ptn2->points_to(phantom_obj);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1716 bool set1_has_null_ptr = ptn1->points_to(null_obj);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1717 bool set2_has_null_ptr = ptn2->points_to(null_obj);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1718 if (set1_has_unknown_ptr && set2_has_null_ptr ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1719 set2_has_unknown_ptr && set1_has_null_ptr) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1720 // Check nullness of unknown object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1721 return NULL;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1722 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1723
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1724 // Disjointness by itself is not sufficient since
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1725 // alias analysis is not complete for escaped objects.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1726 // Disjoint sets are definitely unrelated only when
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1727 // at least one set has only not escaping allocations.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1728 if (!set1_has_unknown_ptr && !set1_has_null_ptr) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1729 if (ptn1->non_escaping_allocation()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1730 return _pcmp_neq;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1731 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1732 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1733 if (!set2_has_unknown_ptr && !set2_has_null_ptr) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1734 if (ptn2->non_escaping_allocation()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1735 return _pcmp_neq;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1736 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1737 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1738 return NULL;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1739 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1740
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1741 // Connection Graph constuction functions.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1742
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1743 void ConnectionGraph::add_local_var(Node *n, PointsToNode::EscapeState es) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1744 PointsToNode* ptadr = _nodes.at(n->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1745 if (ptadr != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1746 assert(ptadr->is_LocalVar() && ptadr->ideal_node() == n, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1747 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1748 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1749 Compile* C = _compile;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1750 ptadr = new (C->comp_arena()) LocalVarNode(C, n, es);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1751 _nodes.at_put(n->_idx, ptadr);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1752 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1753
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1754 void ConnectionGraph::add_java_object(Node *n, PointsToNode::EscapeState es) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1755 PointsToNode* ptadr = _nodes.at(n->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1756 if (ptadr != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1757 assert(ptadr->is_JavaObject() && ptadr->ideal_node() == n, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1758 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1759 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1760 Compile* C = _compile;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1761 ptadr = new (C->comp_arena()) JavaObjectNode(C, n, es);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1762 _nodes.at_put(n->_idx, ptadr);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1763 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1764
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1765 void ConnectionGraph::add_field(Node *n, PointsToNode::EscapeState es, int offset) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1766 PointsToNode* ptadr = _nodes.at(n->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1767 if (ptadr != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1768 assert(ptadr->is_Field() && ptadr->ideal_node() == n, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1769 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1770 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1771 Compile* C = _compile;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1772 bool is_oop = is_oop_field(n, offset);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1773 FieldNode* field = new (C->comp_arena()) FieldNode(C, n, es, offset, is_oop);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1774 _nodes.at_put(n->_idx, field);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1775 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1776
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1777 void ConnectionGraph::add_arraycopy(Node *n, PointsToNode::EscapeState es,
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1778 PointsToNode* src, PointsToNode* dst) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1779 assert(!src->is_Field() && !dst->is_Field(), "only for JavaObject and LocalVar");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1780 assert((src != null_obj) && (dst != null_obj), "not for ConP NULL");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1781 PointsToNode* ptadr = _nodes.at(n->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1782 if (ptadr != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1783 assert(ptadr->is_Arraycopy() && ptadr->ideal_node() == n, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1784 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1785 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1786 Compile* C = _compile;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1787 ptadr = new (C->comp_arena()) ArraycopyNode(C, n, es);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1788 _nodes.at_put(n->_idx, ptadr);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1789 // Add edge from arraycopy node to source object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1790 (void)add_edge(ptadr, src);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1791 src->set_arraycopy_src();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1792 // Add edge from destination object to arraycopy node.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1793 (void)add_edge(dst, ptadr);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1794 dst->set_arraycopy_dst();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1795 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1796
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1797 bool ConnectionGraph::is_oop_field(Node* n, int offset) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1798 const Type* adr_type = n->as_AddP()->bottom_type();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1799 BasicType bt = T_INT;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1800 if (offset == Type::OffsetBot) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1801 // Check only oop fields.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1802 if (!adr_type->isa_aryptr() ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1803 (adr_type->isa_aryptr()->klass() == NULL) ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1804 adr_type->isa_aryptr()->klass()->is_obj_array_klass()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1805 // OffsetBot is used to reference array's element. Ignore first AddP.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1806 if (find_second_addp(n, n->in(AddPNode::Base)) == NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1807 bt = T_OBJECT;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1808 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1809 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1810 } else if (offset != oopDesc::klass_offset_in_bytes()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1811 if (adr_type->isa_instptr()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1812 ciField* field = _compile->alias_type(adr_type->isa_instptr())->field();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1813 if (field != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1814 bt = field->layout_type();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1815 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1816 // Ignore non field load (for example, klass load)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1817 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1818 } else if (adr_type->isa_aryptr()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1819 if (offset == arrayOopDesc::length_offset_in_bytes()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1820 // Ignore array length load.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1821 } else if (find_second_addp(n, n->in(AddPNode::Base)) != NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1822 // Ignore first AddP.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1823 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1824 const Type* elemtype = adr_type->isa_aryptr()->elem();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1825 bt = elemtype->array_element_basic_type();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1826 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1827 } else if (adr_type->isa_rawptr() || adr_type->isa_klassptr()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1828 // Allocation initialization, ThreadLocal field access, unsafe access
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1829 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1830 int opcode = n->fast_out(i)->Opcode();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1831 if (opcode == Op_StoreP || opcode == Op_LoadP ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1832 opcode == Op_StoreN || opcode == Op_LoadN) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1833 bt = T_OBJECT;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1834 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1835 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1836 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1837 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1838 return (bt == T_OBJECT || bt == T_NARROWOOP || bt == T_ARRAY);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1839 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1840
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1841 // Returns unique pointed java object or NULL.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1842 JavaObjectNode* ConnectionGraph::unique_java_object(Node *n) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1843 assert(!_collecting, "should not call when contructed graph");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1844 // If the node was created after the escape computation we can't answer.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1845 uint idx = n->_idx;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1846 if (idx >= nodes_size()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1847 return NULL;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1848 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1849 PointsToNode* ptn = ptnode_adr(idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1850 if (ptn->is_JavaObject()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1851 return ptn->as_JavaObject();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1852 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1853 assert(ptn->is_LocalVar(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1854 // Check all java objects it points to.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1855 JavaObjectNode* jobj = NULL;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1856 for (EdgeIterator i(ptn); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1857 PointsToNode* e = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1858 if (e->is_JavaObject()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1859 if (jobj == NULL) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1860 jobj = e->as_JavaObject();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1861 } else if (jobj != e) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1862 return NULL;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1863 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1864 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1865 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1866 return jobj;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1867 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1868
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1869 // Return true if this node points only to non-escaping allocations.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1870 bool PointsToNode::non_escaping_allocation() {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1871 if (is_JavaObject()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1872 Node* n = ideal_node();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1873 if (n->is_Allocate() || n->is_CallStaticJava()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1874 return (escape_state() == PointsToNode::NoEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1875 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1876 return false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1877 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1878 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1879 assert(is_LocalVar(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1880 // Check all java objects it points to.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1881 for (EdgeIterator i(this); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1882 PointsToNode* e = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1883 if (e->is_JavaObject()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1884 Node* n = e->ideal_node();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1885 if ((e->escape_state() != PointsToNode::NoEscape) ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1886 !(n->is_Allocate() || n->is_CallStaticJava())) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1887 return false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1888 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1889 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1890 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1891 return true;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1892 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1893
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1894 // Return true if we know the node does not escape globally.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1895 bool ConnectionGraph::not_global_escape(Node *n) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1896 assert(!_collecting, "should not call during graph construction");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1897 // If the node was created after the escape computation we can't answer.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1898 uint idx = n->_idx;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1899 if (idx >= nodes_size()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1900 return false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1901 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1902 PointsToNode* ptn = ptnode_adr(idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1903 PointsToNode::EscapeState es = ptn->escape_state();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1904 // If we have already computed a value, return it.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1905 if (es >= PointsToNode::GlobalEscape)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1906 return false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1907 if (ptn->is_JavaObject()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1908 return true; // (es < PointsToNode::GlobalEscape);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1909 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1910 assert(ptn->is_LocalVar(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1911 // Check all java objects it points to.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1912 for (EdgeIterator i(ptn); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1913 if (i.get()->escape_state() >= PointsToNode::GlobalEscape)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1914 return false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1915 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1916 return true;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1917 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1918
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1919
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1920 // Helper functions
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1921
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1922 // Return true if this node points to specified node or nodes it points to.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1923 bool PointsToNode::points_to(JavaObjectNode* ptn) const {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1924 if (is_JavaObject()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1925 return (this == ptn);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1926 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1927 assert(is_LocalVar(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1928 for (EdgeIterator i(this); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1929 if (i.get() == ptn)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1930 return true;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1931 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1932 return false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1933 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1934
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1935 // Return true if one node points to an other.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1936 bool PointsToNode::meet(PointsToNode* ptn) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1937 if (this == ptn) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1938 return true;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1939 } else if (ptn->is_JavaObject()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1940 return this->points_to(ptn->as_JavaObject());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1941 } else if (this->is_JavaObject()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1942 return ptn->points_to(this->as_JavaObject());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1943 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1944 assert(this->is_LocalVar() && ptn->is_LocalVar(), "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1945 int ptn_count = ptn->edge_count();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1946 for (EdgeIterator i(this); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1947 PointsToNode* this_e = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1948 for (int j = 0; j < ptn_count; j++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1949 if (this_e == ptn->edge(j))
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1950 return true;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1951 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1952 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1953 return false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1954 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1955
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1956 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1957 // Return true if bases point to this java object.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1958 bool FieldNode::has_base(JavaObjectNode* jobj) const {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1959 for (BaseIterator i(this); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1960 if (i.get() == jobj)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1961 return true;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1962 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1963 return false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1964 }
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1965 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1966
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1967 int ConnectionGraph::address_offset(Node* adr, PhaseTransform *phase) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1968 const Type *adr_type = phase->type(adr);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1969 if (adr->is_AddP() && adr_type->isa_oopptr() == NULL &&
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1970 adr->in(AddPNode::Address)->is_Proj() &&
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1971 adr->in(AddPNode::Address)->in(0)->is_Allocate()) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1972 // We are computing a raw address for a store captured by an Initialize
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1973 // compute an appropriate address type. AddP cases #3 and #5 (see below).
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1974 int offs = (int)phase->find_intptr_t_con(adr->in(AddPNode::Offset), Type::OffsetBot);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1975 assert(offs != Type::OffsetBot ||
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1976 adr->in(AddPNode::Address)->in(0)->is_AllocateArray(),
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1977 "offset must be a constant or it is initialization of array");
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1978 return offs;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1979 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1980 const TypePtr *t_ptr = adr_type->isa_ptr();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1981 assert(t_ptr != NULL, "must be a pointer type");
a61af66fc99e Initial load
duke
parents:
diff changeset
1982 return t_ptr->offset();
a61af66fc99e Initial load
duke
parents:
diff changeset
1983 }
a61af66fc99e Initial load
duke
parents:
diff changeset
1984
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
1985 Node* ConnectionGraph::get_addp_base(Node *addp) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1986 assert(addp->is_AddP(), "must be AddP");
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1987 //
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1988 // AddP cases for Base and Address inputs:
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1989 // case #1. Direct object's field reference:
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1990 // Allocate
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1991 // |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1992 // Proj #5 ( oop result )
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1993 // |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1994 // CheckCastPP (cast to instance type)
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1995 // | |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1996 // AddP ( base == address )
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1997 //
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1998 // case #2. Indirect object's field reference:
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
1999 // Phi
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2000 // |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2001 // CastPP (cast to instance type)
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2002 // | |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2003 // AddP ( base == address )
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2004 //
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2005 // case #3. Raw object's field reference for Initialize node:
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2006 // Allocate
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2007 // |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2008 // Proj #5 ( oop result )
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2009 // top |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2010 // \ |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2011 // AddP ( base == top )
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2012 //
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2013 // case #4. Array's element reference:
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2014 // {CheckCastPP | CastPP}
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2015 // | | |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2016 // | AddP ( array's element offset )
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2017 // | |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2018 // AddP ( array's offset )
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2019 //
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2020 // case #5. Raw object's field reference for arraycopy stub call:
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2021 // The inline_native_clone() case when the arraycopy stub is called
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2022 // after the allocation before Initialize and CheckCastPP nodes.
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2023 // Allocate
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2024 // |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2025 // Proj #5 ( oop result )
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2026 // | |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2027 // AddP ( base == address )
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2028 //
77
36cd3cc4d27b 6679854: assert in escape.cpp:397
kvn
parents: 65
diff changeset
2029 // case #6. Constant Pool, ThreadLocal, CastX2P or
36cd3cc4d27b 6679854: assert in escape.cpp:397
kvn
parents: 65
diff changeset
2030 // Raw object's field reference:
36cd3cc4d27b 6679854: assert in escape.cpp:397
kvn
parents: 65
diff changeset
2031 // {ConP, ThreadLocal, CastX2P, raw Load}
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2032 // top |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2033 // \ |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2034 // AddP ( base == top )
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2035 //
77
36cd3cc4d27b 6679854: assert in escape.cpp:397
kvn
parents: 65
diff changeset
2036 // case #7. Klass's field reference.
36cd3cc4d27b 6679854: assert in escape.cpp:397
kvn
parents: 65
diff changeset
2037 // LoadKlass
36cd3cc4d27b 6679854: assert in escape.cpp:397
kvn
parents: 65
diff changeset
2038 // | |
36cd3cc4d27b 6679854: assert in escape.cpp:397
kvn
parents: 65
diff changeset
2039 // AddP ( base == address )
36cd3cc4d27b 6679854: assert in escape.cpp:397
kvn
parents: 65
diff changeset
2040 //
164
c436414a719e 6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents: 163
diff changeset
2041 // case #8. narrow Klass's field reference.
c436414a719e 6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents: 163
diff changeset
2042 // LoadNKlass
c436414a719e 6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents: 163
diff changeset
2043 // |
c436414a719e 6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents: 163
diff changeset
2044 // DecodeN
c436414a719e 6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents: 163
diff changeset
2045 // | |
c436414a719e 6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents: 163
diff changeset
2046 // AddP ( base == address )
c436414a719e 6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents: 163
diff changeset
2047 //
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2048 Node *base = addp->in(AddPNode::Base);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2049 if (base->uncast()->is_top()) { // The AddP case #3 and #6.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2050 base = addp->in(AddPNode::Address);
957
159d56b94894 6880574: C2 assert in escape.cpp:445 on linux-amd64
kvn
parents: 866
diff changeset
2051 while (base->is_AddP()) {
159d56b94894 6880574: C2 assert in escape.cpp:445 on linux-amd64
kvn
parents: 866
diff changeset
2052 // Case #6 (unsafe access) may have several chained AddP nodes.
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2053 assert(base->in(AddPNode::Base)->uncast()->is_top(), "expected unsafe access address only");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2054 base = base->in(AddPNode::Address);
957
159d56b94894 6880574: C2 assert in escape.cpp:445 on linux-amd64
kvn
parents: 866
diff changeset
2055 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2056 Node* uncast_base = base->uncast();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2057 int opcode = uncast_base->Opcode();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2058 assert(opcode == Op_ConP || opcode == Op_ThreadLocal ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2059 opcode == Op_CastX2P || uncast_base->is_DecodeN() ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2060 (uncast_base->is_Mem() && uncast_base->bottom_type() == TypeRawPtr::NOTNULL) ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2061 (uncast_base->is_Proj() && uncast_base->in(0)->is_Allocate()), "sanity");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2062 }
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2063 return base;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2064 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2065
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2066 Node* ConnectionGraph::find_second_addp(Node* addp, Node* n) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2067 assert(addp->is_AddP() && addp->outcnt() > 0, "Don't process dead nodes");
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2068 Node* addp2 = addp->raw_out(0);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2069 if (addp->outcnt() == 1 && addp2->is_AddP() &&
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2070 addp2->in(AddPNode::Base) == n &&
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2071 addp2->in(AddPNode::Address) == addp) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2072 assert(addp->in(AddPNode::Base) == n, "expecting the same base");
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2073 //
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2074 // Find array's offset to push it on worklist first and
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2075 // as result process an array's element offset first (pushed second)
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2076 // to avoid CastPP for the array's offset.
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2077 // Otherwise the inserted CastPP (LocalVar) will point to what
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2078 // the AddP (Field) points to. Which would be wrong since
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2079 // the algorithm expects the CastPP has the same point as
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2080 // as AddP's base CheckCastPP (LocalVar).
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2081 //
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2082 // ArrayAllocation
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2083 // |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2084 // CheckCastPP
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2085 // |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2086 // memProj (from ArrayAllocation CheckCastPP)
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2087 // | ||
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2088 // | || Int (element index)
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2089 // | || | ConI (log(element size))
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2090 // | || | /
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2091 // | || LShift
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2092 // | || /
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2093 // | AddP (array's element offset)
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2094 // | |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2095 // | | ConI (array's offset: #12(32-bits) or #24(64-bits))
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2096 // | / /
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2097 // AddP (array's offset)
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2098 // |
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2099 // Load/Store (memory operation on array's element)
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2100 //
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2101 return addp2;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2102 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2103 return NULL;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2104 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2105
a61af66fc99e Initial load
duke
parents:
diff changeset
2106 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2107 // Adjust the type and inputs of an AddP which computes the
a61af66fc99e Initial load
duke
parents:
diff changeset
2108 // address of a field of an instance
a61af66fc99e Initial load
duke
parents:
diff changeset
2109 //
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2110 bool ConnectionGraph::split_AddP(Node *addp, Node *base) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2111 PhaseGVN* igvn = _igvn;
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2112 const TypeOopPtr *base_t = igvn->type(base)->isa_oopptr();
223
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
2113 assert(base_t != NULL && base_t->is_known_instance(), "expecting instance oopptr");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2114 const TypeOopPtr *t = igvn->type(addp)->isa_oopptr();
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2115 if (t == NULL) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2116 // We are computing a raw address for a store captured by an Initialize
293
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2117 // compute an appropriate address type (cases #3 and #5).
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2118 assert(igvn->type(addp) == TypeRawPtr::NOTNULL, "must be raw pointer");
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2119 assert(addp->in(AddPNode::Address)->is_Proj(), "base of raw address must be result projection from allocation");
306
af945ba2e739 6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents: 293
diff changeset
2120 intptr_t offs = (int)igvn->find_intptr_t_con(addp->in(AddPNode::Offset), Type::OffsetBot);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2121 assert(offs != Type::OffsetBot, "offset must be a constant");
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2122 t = base_t->add_offset(offs)->is_oopptr();
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2123 }
223
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
2124 int inst_id = base_t->instance_id();
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
2125 assert(!t->is_known_instance() || t->instance_id() == inst_id,
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2126 "old type must be non-instance or match new type");
293
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2127
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2128 // The type 't' could be subclass of 'base_t'.
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2129 // As result t->offset() could be large then base_t's size and it will
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2130 // cause the failure in add_offset() with narrow oops since TypeOopPtr()
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2131 // constructor verifies correctness of the offset.
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2132 //
605
98cb887364d3 6810672: Comment typos
twisti
parents: 584
diff changeset
2133 // It could happened on subclass's branch (from the type profiling
293
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2134 // inlining) which was not eliminated during parsing since the exactness
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2135 // of the allocation type was not propagated to the subclass type check.
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2136 //
988
7e309ecb83ce 6879362: assert(!klass_is_exact(),"only non-exact klass")
kvn
parents: 957
diff changeset
2137 // Or the type 't' could be not related to 'base_t' at all.
7e309ecb83ce 6879362: assert(!klass_is_exact(),"only non-exact klass")
kvn
parents: 957
diff changeset
2138 // It could happened when CHA type is different from MDO type on a dead path
7e309ecb83ce 6879362: assert(!klass_is_exact(),"only non-exact klass")
kvn
parents: 957
diff changeset
2139 // (for example, from instanceof check) which is not collapsed during parsing.
7e309ecb83ce 6879362: assert(!klass_is_exact(),"only non-exact klass")
kvn
parents: 957
diff changeset
2140 //
293
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2141 // Do nothing for such AddP node and don't process its users since
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2142 // this code branch will go away.
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2143 //
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2144 if (!t->is_known_instance() &&
988
7e309ecb83ce 6879362: assert(!klass_is_exact(),"only non-exact klass")
kvn
parents: 957
diff changeset
2145 !base_t->klass()->is_subtype_of(t->klass())) {
293
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2146 return false; // bail out
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2147 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2148 const TypeOopPtr *tinst = base_t->add_offset(t->offset())->is_oopptr();
1062
dcdcc8c16e20 6896352: CTW fails hotspot/src/share/vm/opto/escape.cpp:1155
kvn
parents: 988
diff changeset
2149 // Do NOT remove the next line: ensure a new alias index is allocated
dcdcc8c16e20 6896352: CTW fails hotspot/src/share/vm/opto/escape.cpp:1155
kvn
parents: 988
diff changeset
2150 // for the instance type. Note: C++ will not remove it since the call
dcdcc8c16e20 6896352: CTW fails hotspot/src/share/vm/opto/escape.cpp:1155
kvn
parents: 988
diff changeset
2151 // has side effect.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2152 int alias_idx = _compile->get_alias_index(tinst);
a61af66fc99e Initial load
duke
parents:
diff changeset
2153 igvn->set_type(addp, tinst);
a61af66fc99e Initial load
duke
parents:
diff changeset
2154 // record the allocation in the node map
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2155 set_map(addp, get_map(base->_idx));
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2156 // Set addp's Base and Address to 'base'.
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2157 Node *abase = addp->in(AddPNode::Base);
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2158 Node *adr = addp->in(AddPNode::Address);
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2159 if (adr->is_Proj() && adr->in(0)->is_Allocate() &&
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2160 adr->in(0)->_idx == (uint)inst_id) {
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2161 // Skip AddP cases #3 and #5.
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2162 } else {
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2163 assert(!abase->is_top(), "sanity"); // AddP case #3
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2164 if (abase != base) {
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2165 igvn->hash_delete(addp);
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2166 addp->set_req(AddPNode::Base, base);
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2167 if (abase == adr) {
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2168 addp->set_req(AddPNode::Address, base);
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2169 } else {
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2170 // AddP case #4 (adr is array's element offset AddP node)
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2171 #ifdef ASSERT
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2172 const TypeOopPtr *atype = igvn->type(adr)->isa_oopptr();
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2173 assert(adr->is_AddP() && atype != NULL &&
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2174 atype->instance_id() == inst_id, "array's element offset should be processed first");
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2175 #endif
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2176 }
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2177 igvn->hash_insert(addp);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2178 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2179 }
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2180 // Put on IGVN worklist since at least addp's type was changed above.
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2181 record_for_optimizer(addp);
293
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2182 return true;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2183 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2184
a61af66fc99e Initial load
duke
parents:
diff changeset
2185 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2186 // Create a new version of orig_phi if necessary. Returns either the newly
2459
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2187 // created phi or an existing phi. Sets create_new to indicate whether a new
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2188 // phi was created. Cache the last newly created phi in the node map.
a61af66fc99e Initial load
duke
parents:
diff changeset
2189 //
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2190 PhiNode *ConnectionGraph::create_split_phi(PhiNode *orig_phi, int alias_idx, GrowableArray<PhiNode *> &orig_phi_worklist, bool &new_created) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2191 Compile *C = _compile;
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2192 PhaseGVN* igvn = _igvn;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2193 new_created = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
2194 int phi_alias_idx = C->get_alias_index(orig_phi->adr_type());
a61af66fc99e Initial load
duke
parents:
diff changeset
2195 // nothing to do if orig_phi is bottom memory or matches alias_idx
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2196 if (phi_alias_idx == alias_idx) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2197 return orig_phi;
a61af66fc99e Initial load
duke
parents:
diff changeset
2198 }
851
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2199 // Have we recently created a Phi for this alias index?
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2200 PhiNode *result = get_map_phi(orig_phi->_idx);
a61af66fc99e Initial load
duke
parents:
diff changeset
2201 if (result != NULL && C->get_alias_index(result->adr_type()) == alias_idx) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2202 return result;
a61af66fc99e Initial load
duke
parents:
diff changeset
2203 }
851
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2204 // Previous check may fail when the same wide memory Phi was split into Phis
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2205 // for different memory slices. Search all Phis for this region.
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2206 if (result != NULL) {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2207 Node* region = orig_phi->in(0);
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2208 for (DUIterator_Fast imax, i = region->fast_outs(imax); i < imax; i++) {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2209 Node* phi = region->fast_out(i);
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2210 if (phi->is_Phi() &&
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2211 C->get_alias_index(phi->as_Phi()->adr_type()) == alias_idx) {
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2212 assert(phi->_idx >= nodes_size(), "only new Phi per instance memory slice");
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2213 return phi->as_Phi();
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2214 }
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2215 }
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2216 }
38
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2217 if ((int)C->unique() + 2*NodeLimitFudgeFactor > MaxNodeLimit) {
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2218 if (C->do_escape_analysis() == true && !C->failing()) {
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2219 // Retry compilation without escape analysis.
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2220 // If this is the first failure, the sentinel string will "stick"
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2221 // to the Compile object, and the C2Compiler will see it and retry.
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2222 C->record_failure(C2Compiler::retry_no_escape_analysis());
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2223 }
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2224 return NULL;
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2225 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2226 orig_phi_worklist.append_if_missing(orig_phi);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2227 const TypePtr *atype = C->get_adr_type(alias_idx);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2228 result = PhiNode::make(orig_phi->in(0), NULL, Type::MEMORY, atype);
851
fc4be448891f 6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
parents: 784
diff changeset
2229 C->copy_node_notes_to(result, orig_phi);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2230 igvn->set_type(result, result->bottom_type());
a61af66fc99e Initial load
duke
parents:
diff changeset
2231 record_for_optimizer(result);
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2232 set_map(orig_phi, result);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2233 new_created = true;
a61af66fc99e Initial load
duke
parents:
diff changeset
2234 return result;
a61af66fc99e Initial load
duke
parents:
diff changeset
2235 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2236
a61af66fc99e Initial load
duke
parents:
diff changeset
2237 //
2459
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2238 // Return a new version of Memory Phi "orig_phi" with the inputs having the
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2239 // specified alias index.
a61af66fc99e Initial load
duke
parents:
diff changeset
2240 //
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2241 PhiNode *ConnectionGraph::split_memory_phi(PhiNode *orig_phi, int alias_idx, GrowableArray<PhiNode *> &orig_phi_worklist) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2242 assert(alias_idx != Compile::AliasIdxBot, "can't split out bottom memory");
a61af66fc99e Initial load
duke
parents:
diff changeset
2243 Compile *C = _compile;
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2244 PhaseGVN* igvn = _igvn;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2245 bool new_phi_created;
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2246 PhiNode *result = create_split_phi(orig_phi, alias_idx, orig_phi_worklist, new_phi_created);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2247 if (!new_phi_created) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2248 return result;
a61af66fc99e Initial load
duke
parents:
diff changeset
2249 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2250 GrowableArray<PhiNode *> phi_list;
a61af66fc99e Initial load
duke
parents:
diff changeset
2251 GrowableArray<uint> cur_input;
a61af66fc99e Initial load
duke
parents:
diff changeset
2252 PhiNode *phi = orig_phi;
a61af66fc99e Initial load
duke
parents:
diff changeset
2253 uint idx = 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2254 bool finished = false;
a61af66fc99e Initial load
duke
parents:
diff changeset
2255 while(!finished) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2256 while (idx < phi->req()) {
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2257 Node *mem = find_inst_mem(phi->in(idx), alias_idx, orig_phi_worklist);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2258 if (mem != NULL && mem->is_Phi()) {
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2259 PhiNode *newphi = create_split_phi(mem->as_Phi(), alias_idx, orig_phi_worklist, new_phi_created);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2260 if (new_phi_created) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2261 // found an phi for which we created a new split, push current one on worklist and begin
a61af66fc99e Initial load
duke
parents:
diff changeset
2262 // processing new one
a61af66fc99e Initial load
duke
parents:
diff changeset
2263 phi_list.push(phi);
a61af66fc99e Initial load
duke
parents:
diff changeset
2264 cur_input.push(idx);
a61af66fc99e Initial load
duke
parents:
diff changeset
2265 phi = mem->as_Phi();
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2266 result = newphi;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2267 idx = 1;
a61af66fc99e Initial load
duke
parents:
diff changeset
2268 continue;
a61af66fc99e Initial load
duke
parents:
diff changeset
2269 } else {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2270 mem = newphi;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2271 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2272 }
38
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2273 if (C->failing()) {
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2274 return NULL;
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2275 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2276 result->set_req(idx++, mem);
a61af66fc99e Initial load
duke
parents:
diff changeset
2277 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2278 #ifdef ASSERT
a61af66fc99e Initial load
duke
parents:
diff changeset
2279 // verify that the new Phi has an input for each input of the original
a61af66fc99e Initial load
duke
parents:
diff changeset
2280 assert( phi->req() == result->req(), "must have same number of inputs.");
a61af66fc99e Initial load
duke
parents:
diff changeset
2281 assert( result->in(0) != NULL && result->in(0) == phi->in(0), "regions must match");
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2282 #endif
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2283 // Check if all new phi's inputs have specified alias index.
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2284 // Otherwise use old phi.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2285 for (uint i = 1; i < phi->req(); i++) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2286 Node* in = result->in(i);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2287 assert((phi->in(i) == NULL) == (in == NULL), "inputs must correspond.");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2288 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2289 // we have finished processing a Phi, see if there are any more to do
a61af66fc99e Initial load
duke
parents:
diff changeset
2290 finished = (phi_list.length() == 0 );
a61af66fc99e Initial load
duke
parents:
diff changeset
2291 if (!finished) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2292 phi = phi_list.pop();
a61af66fc99e Initial load
duke
parents:
diff changeset
2293 idx = cur_input.pop();
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2294 PhiNode *prev_result = get_map_phi(phi->_idx);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2295 prev_result->set_req(idx++, result);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2296 result = prev_result;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2297 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2298 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2299 return result;
a61af66fc99e Initial load
duke
parents:
diff changeset
2300 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2301
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2302 //
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2303 // The next methods are derived from methods in MemNode.
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2304 //
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2305 Node* ConnectionGraph::step_through_mergemem(MergeMemNode *mmem, int alias_idx, const TypeOopPtr *toop) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2306 Node *mem = mmem;
1815
5867d89c129b 6982537: Crash in Node*step_through_mergemem
never
parents: 1634
diff changeset
2307 // TypeOopPtr::NOTNULL+any is an OOP with unknown offset - generally
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2308 // means an array I have not precisely typed yet. Do not do any
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2309 // alias stuff with it any time soon.
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2310 if (toop->base() != Type::AnyPtr &&
1815
5867d89c129b 6982537: Crash in Node*step_through_mergemem
never
parents: 1634
diff changeset
2311 !(toop->klass() != NULL &&
5867d89c129b 6982537: Crash in Node*step_through_mergemem
never
parents: 1634
diff changeset
2312 toop->klass()->is_java_lang_Object() &&
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2313 toop->offset() == Type::OffsetBot)) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2314 mem = mmem->memory_at(alias_idx);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2315 // Update input if it is progress over what we have now
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2316 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2317 return mem;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2318 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2319
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2320 //
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2321 // Move memory users to their memory slices.
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2322 //
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2323 void ConnectionGraph::move_inst_mem(Node* n, GrowableArray<PhiNode *> &orig_phis) {
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2324 Compile* C = _compile;
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2325 PhaseGVN* igvn = _igvn;
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2326 const TypePtr* tp = igvn->type(n->in(MemNode::Address))->isa_ptr();
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2327 assert(tp != NULL, "ptr type");
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2328 int alias_idx = C->get_alias_index(tp);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2329 int general_idx = C->get_general_index(alias_idx);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2330
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2331 // Move users first
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2332 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) {
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2333 Node* use = n->fast_out(i);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2334 if (use->is_MergeMem()) {
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2335 MergeMemNode* mmem = use->as_MergeMem();
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2336 assert(n == mmem->memory_at(alias_idx), "should be on instance memory slice");
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2337 if (n != mmem->memory_at(general_idx) || alias_idx == general_idx) {
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2338 continue; // Nothing to do
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2339 }
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2340 // Replace previous general reference to mem node.
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2341 uint orig_uniq = C->unique();
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2342 Node* m = find_inst_mem(n, general_idx, orig_phis);
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2343 assert(orig_uniq == C->unique(), "no new nodes");
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2344 mmem->set_memory_at(general_idx, m);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2345 --imax;
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2346 --i;
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2347 } else if (use->is_MemBar()) {
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2348 assert(!use->is_Initialize(), "initializing stores should not be moved");
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2349 if (use->req() > MemBarNode::Precedent &&
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2350 use->in(MemBarNode::Precedent) == n) {
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2351 // Don't move related membars.
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2352 record_for_optimizer(use);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2353 continue;
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2354 }
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2355 tp = use->as_MemBar()->adr_type()->isa_ptr();
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2356 if (tp != NULL && C->get_alias_index(tp) == alias_idx ||
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2357 alias_idx == general_idx) {
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2358 continue; // Nothing to do
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2359 }
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2360 // Move to general memory slice.
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2361 uint orig_uniq = C->unique();
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2362 Node* m = find_inst_mem(n, general_idx, orig_phis);
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2363 assert(orig_uniq == C->unique(), "no new nodes");
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2364 igvn->hash_delete(use);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2365 imax -= use->replace_edge(n, m);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2366 igvn->hash_insert(use);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2367 record_for_optimizer(use);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2368 --i;
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2369 #ifdef ASSERT
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2370 } else if (use->is_Mem()) {
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2371 if (use->Opcode() == Op_StoreCM && use->in(MemNode::OopStore) == n) {
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2372 // Don't move related cardmark.
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2373 continue;
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2374 }
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2375 // Memory nodes should have new memory input.
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2376 tp = igvn->type(use->in(MemNode::Address))->isa_ptr();
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2377 assert(tp != NULL, "ptr type");
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2378 int idx = C->get_alias_index(tp);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2379 assert(get_map(use->_idx) != NULL || idx == alias_idx,
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2380 "Following memory nodes should have new memory input or be on the same memory slice");
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2381 } else if (use->is_Phi()) {
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2382 // Phi nodes should be split and moved already.
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2383 tp = use->as_Phi()->adr_type()->isa_ptr();
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2384 assert(tp != NULL, "ptr type");
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2385 int idx = C->get_alias_index(tp);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2386 assert(idx == alias_idx, "Following Phi nodes should be on the same memory slice");
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2387 } else {
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2388 use->dump();
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2389 assert(false, "should not be here");
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2390 #endif
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2391 }
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2392 }
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2393 }
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2394
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2395 //
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2396 // Search memory chain of "mem" to find a MemNode whose address
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2397 // is the specified alias index.
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2398 //
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2399 Node* ConnectionGraph::find_inst_mem(Node *orig_mem, int alias_idx, GrowableArray<PhiNode *> &orig_phis) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2400 if (orig_mem == NULL)
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2401 return orig_mem;
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2402 Compile* C = _compile;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2403 PhaseGVN* igvn = _igvn;
1815
5867d89c129b 6982537: Crash in Node*step_through_mergemem
never
parents: 1634
diff changeset
2404 const TypeOopPtr *toop = C->get_adr_type(alias_idx)->isa_oopptr();
5867d89c129b 6982537: Crash in Node*step_through_mergemem
never
parents: 1634
diff changeset
2405 bool is_instance = (toop != NULL) && toop->is_known_instance();
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2406 Node *start_mem = C->start()->proj_out(TypeFunc::Memory);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2407 Node *prev = NULL;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2408 Node *result = orig_mem;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2409 while (prev != result) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2410 prev = result;
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2411 if (result == start_mem)
605
98cb887364d3 6810672: Comment typos
twisti
parents: 584
diff changeset
2412 break; // hit one of our sentinels
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2413 if (result->is_Mem()) {
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2414 const Type *at = igvn->type(result->in(MemNode::Address));
2459
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2415 if (at == Type::TOP)
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2416 break; // Dead
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2417 assert (at->isa_ptr() != NULL, "pointer type required.");
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2418 int idx = C->get_alias_index(at->is_ptr());
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2419 if (idx == alias_idx)
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2420 break; // Found
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2421 if (!is_instance && (at->isa_oopptr() == NULL ||
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2422 !at->is_oopptr()->is_known_instance())) {
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2423 break; // Do not skip store to general memory slice.
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2424 }
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2425 result = result->in(MemNode::Memory);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2426 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2427 if (!is_instance)
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2428 continue; // don't search further for non-instance types
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2429 // skip over a call which does not affect this memory slice
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2430 if (result->is_Proj() && result->as_Proj()->_con == TypeFunc::Memory) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2431 Node *proj_in = result->in(0);
1815
5867d89c129b 6982537: Crash in Node*step_through_mergemem
never
parents: 1634
diff changeset
2432 if (proj_in->is_Allocate() && proj_in->_idx == (uint)toop->instance_id()) {
605
98cb887364d3 6810672: Comment typos
twisti
parents: 584
diff changeset
2433 break; // hit one of our sentinels
253
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents: 247
diff changeset
2434 } else if (proj_in->is_Call()) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2435 CallNode *call = proj_in->as_Call();
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2436 if (!call->may_modify(toop, igvn)) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2437 result = call->in(TypeFunc::Memory);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2438 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2439 } else if (proj_in->is_Initialize()) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2440 AllocateNode* alloc = proj_in->as_Initialize()->allocation();
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2441 // Stop if this is the initialization for the object instance which
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2442 // which contains this memory slice, otherwise skip over it.
1815
5867d89c129b 6982537: Crash in Node*step_through_mergemem
never
parents: 1634
diff changeset
2443 if (alloc == NULL || alloc->_idx != (uint)toop->instance_id()) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2444 result = proj_in->in(TypeFunc::Memory);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2445 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2446 } else if (proj_in->is_MemBar()) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2447 result = proj_in->in(TypeFunc::Memory);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2448 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2449 } else if (result->is_MergeMem()) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2450 MergeMemNode *mmem = result->as_MergeMem();
1815
5867d89c129b 6982537: Crash in Node*step_through_mergemem
never
parents: 1634
diff changeset
2451 result = step_through_mergemem(mmem, alias_idx, toop);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2452 if (result == mmem->base_memory()) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2453 // Didn't find instance memory, search through general slice recursively.
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2454 result = mmem->memory_at(C->get_general_index(alias_idx));
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2455 result = find_inst_mem(result, alias_idx, orig_phis);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2456 if (C->failing()) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2457 return NULL;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2458 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2459 mmem->set_memory_at(alias_idx, result);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2460 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2461 } else if (result->is_Phi() &&
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2462 C->get_alias_index(result->as_Phi()->adr_type()) != alias_idx) {
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2463 Node *un = result->as_Phi()->unique_input(igvn);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2464 if (un != NULL) {
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2465 orig_phis.append_if_missing(result->as_Phi());
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2466 result = un;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2467 } else {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2468 break;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2469 }
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2470 } else if (result->is_ClearArray()) {
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2471 if (!ClearArrayNode::step_through(&result, (uint)toop->instance_id(), igvn)) {
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2472 // Can not bypass initialization of the instance
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2473 // we are looking for.
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2474 break;
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2475 }
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2476 // Otherwise skip it (the call updated 'result' value).
584
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 460
diff changeset
2477 } else if (result->Opcode() == Op_SCMemProj) {
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 460
diff changeset
2478 assert(result->in(0)->is_LoadStore(), "sanity");
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2479 const Type *at = igvn->type(result->in(0)->in(MemNode::Address));
584
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 460
diff changeset
2480 if (at != Type::TOP) {
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 460
diff changeset
2481 assert (at->isa_ptr() != NULL, "pointer type required.");
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 460
diff changeset
2482 int idx = C->get_alias_index(at->is_ptr());
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 460
diff changeset
2483 assert(idx != alias_idx, "Object is not scalar replaceable if a LoadStore node access its field");
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 460
diff changeset
2484 break;
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 460
diff changeset
2485 }
49a36a80b0c7 6802499: EA: assert(false,"unknown node on this path")
kvn
parents: 460
diff changeset
2486 result = result->in(0)->in(MemNode::Memory);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2487 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2488 }
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
2489 if (result->is_Phi()) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2490 PhiNode *mphi = result->as_Phi();
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2491 assert(mphi->bottom_type() == Type::MEMORY, "memory phi required");
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2492 const TypePtr *t = mphi->adr_type();
2459
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2493 if (!is_instance) {
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
2494 // Push all non-instance Phis on the orig_phis worklist to update inputs
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
2495 // during Phase 4 if needed.
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
2496 orig_phis.append_if_missing(mphi);
2459
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2497 } else if (C->get_alias_index(t) != alias_idx) {
55973726c600 6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents: 2249
diff changeset
2498 // Create a new Phi with the specified alias index type.
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2499 result = split_memory_phi(mphi, alias_idx, orig_phis);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2500 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2501 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2502 // the result is either MemNode, PhiNode, InitializeNode.
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2503 return result;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2504 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2505
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2506 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2507 // Convert the types of unescaped object to instance types where possible,
a61af66fc99e Initial load
duke
parents:
diff changeset
2508 // propagate the new type information through the graph, and update memory
a61af66fc99e Initial load
duke
parents:
diff changeset
2509 // edges and MergeMem inputs to reflect the new type.
a61af66fc99e Initial load
duke
parents:
diff changeset
2510 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2511 // We start with allocations (and calls which may be allocations) on alloc_worklist.
a61af66fc99e Initial load
duke
parents:
diff changeset
2512 // The processing is done in 4 phases:
a61af66fc99e Initial load
duke
parents:
diff changeset
2513 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2514 // Phase 1: Process possible allocations from alloc_worklist. Create instance
a61af66fc99e Initial load
duke
parents:
diff changeset
2515 // types for the CheckCastPP for allocations where possible.
a61af66fc99e Initial load
duke
parents:
diff changeset
2516 // Propagate the the new types through users as follows:
a61af66fc99e Initial load
duke
parents:
diff changeset
2517 // casts and Phi: push users on alloc_worklist
a61af66fc99e Initial load
duke
parents:
diff changeset
2518 // AddP: cast Base and Address inputs to the instance type
a61af66fc99e Initial load
duke
parents:
diff changeset
2519 // push any AddP users on alloc_worklist and push any memnode
a61af66fc99e Initial load
duke
parents:
diff changeset
2520 // users onto memnode_worklist.
a61af66fc99e Initial load
duke
parents:
diff changeset
2521 // Phase 2: Process MemNode's from memnode_worklist. compute new address type and
a61af66fc99e Initial load
duke
parents:
diff changeset
2522 // search the Memory chain for a store with the appropriate type
a61af66fc99e Initial load
duke
parents:
diff changeset
2523 // address type. If a Phi is found, create a new version with
605
98cb887364d3 6810672: Comment typos
twisti
parents: 584
diff changeset
2524 // the appropriate memory slices from each of the Phi inputs.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2525 // For stores, process the users as follows:
a61af66fc99e Initial load
duke
parents:
diff changeset
2526 // MemNode: push on memnode_worklist
a61af66fc99e Initial load
duke
parents:
diff changeset
2527 // MergeMem: push on mergemem_worklist
a61af66fc99e Initial load
duke
parents:
diff changeset
2528 // Phase 3: Process MergeMem nodes from mergemem_worklist. Walk each memory slice
a61af66fc99e Initial load
duke
parents:
diff changeset
2529 // moving the first node encountered of each instance type to the
a61af66fc99e Initial load
duke
parents:
diff changeset
2530 // the input corresponding to its alias index.
a61af66fc99e Initial load
duke
parents:
diff changeset
2531 // appropriate memory slice.
a61af66fc99e Initial load
duke
parents:
diff changeset
2532 // Phase 4: Update the inputs of non-instance memory Phis and the Memory input of memnodes.
a61af66fc99e Initial load
duke
parents:
diff changeset
2533 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2534 // In the following example, the CheckCastPP nodes are the cast of allocation
a61af66fc99e Initial load
duke
parents:
diff changeset
2535 // results and the allocation of node 29 is unescaped and eligible to be an
a61af66fc99e Initial load
duke
parents:
diff changeset
2536 // instance type.
a61af66fc99e Initial load
duke
parents:
diff changeset
2537 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2538 // We start with:
a61af66fc99e Initial load
duke
parents:
diff changeset
2539 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2540 // 7 Parm #memory
a61af66fc99e Initial load
duke
parents:
diff changeset
2541 // 10 ConI "12"
a61af66fc99e Initial load
duke
parents:
diff changeset
2542 // 19 CheckCastPP "Foo"
a61af66fc99e Initial load
duke
parents:
diff changeset
2543 // 20 AddP _ 19 19 10 Foo+12 alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2544 // 29 CheckCastPP "Foo"
a61af66fc99e Initial load
duke
parents:
diff changeset
2545 // 30 AddP _ 29 29 10 Foo+12 alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2546 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2547 // 40 StoreP 25 7 20 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2548 // 50 StoreP 35 40 30 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2549 // 60 StoreP 45 50 20 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2550 // 70 LoadP _ 60 30 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2551 // 80 Phi 75 50 60 Memory alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2552 // 90 LoadP _ 80 30 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2553 // 100 LoadP _ 80 20 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2554 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2555 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2556 // Phase 1 creates an instance type for node 29 assigning it an instance id of 24
a61af66fc99e Initial load
duke
parents:
diff changeset
2557 // and creating a new alias index for node 30. This gives:
a61af66fc99e Initial load
duke
parents:
diff changeset
2558 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2559 // 7 Parm #memory
a61af66fc99e Initial load
duke
parents:
diff changeset
2560 // 10 ConI "12"
a61af66fc99e Initial load
duke
parents:
diff changeset
2561 // 19 CheckCastPP "Foo"
a61af66fc99e Initial load
duke
parents:
diff changeset
2562 // 20 AddP _ 19 19 10 Foo+12 alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2563 // 29 CheckCastPP "Foo" iid=24
a61af66fc99e Initial load
duke
parents:
diff changeset
2564 // 30 AddP _ 29 29 10 Foo+12 alias_index=6 iid=24
a61af66fc99e Initial load
duke
parents:
diff changeset
2565 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2566 // 40 StoreP 25 7 20 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2567 // 50 StoreP 35 40 30 ... alias_index=6
a61af66fc99e Initial load
duke
parents:
diff changeset
2568 // 60 StoreP 45 50 20 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2569 // 70 LoadP _ 60 30 ... alias_index=6
a61af66fc99e Initial load
duke
parents:
diff changeset
2570 // 80 Phi 75 50 60 Memory alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2571 // 90 LoadP _ 80 30 ... alias_index=6
a61af66fc99e Initial load
duke
parents:
diff changeset
2572 // 100 LoadP _ 80 20 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2573 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2574 // In phase 2, new memory inputs are computed for the loads and stores,
a61af66fc99e Initial load
duke
parents:
diff changeset
2575 // And a new version of the phi is created. In phase 4, the inputs to
a61af66fc99e Initial load
duke
parents:
diff changeset
2576 // node 80 are updated and then the memory nodes are updated with the
a61af66fc99e Initial load
duke
parents:
diff changeset
2577 // values computed in phase 2. This results in:
a61af66fc99e Initial load
duke
parents:
diff changeset
2578 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2579 // 7 Parm #memory
a61af66fc99e Initial load
duke
parents:
diff changeset
2580 // 10 ConI "12"
a61af66fc99e Initial load
duke
parents:
diff changeset
2581 // 19 CheckCastPP "Foo"
a61af66fc99e Initial load
duke
parents:
diff changeset
2582 // 20 AddP _ 19 19 10 Foo+12 alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2583 // 29 CheckCastPP "Foo" iid=24
a61af66fc99e Initial load
duke
parents:
diff changeset
2584 // 30 AddP _ 29 29 10 Foo+12 alias_index=6 iid=24
a61af66fc99e Initial load
duke
parents:
diff changeset
2585 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2586 // 40 StoreP 25 7 20 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2587 // 50 StoreP 35 7 30 ... alias_index=6
a61af66fc99e Initial load
duke
parents:
diff changeset
2588 // 60 StoreP 45 40 20 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2589 // 70 LoadP _ 50 30 ... alias_index=6
a61af66fc99e Initial load
duke
parents:
diff changeset
2590 // 80 Phi 75 40 60 Memory alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2591 // 120 Phi 75 50 50 Memory alias_index=6
a61af66fc99e Initial load
duke
parents:
diff changeset
2592 // 90 LoadP _ 120 30 ... alias_index=6
a61af66fc99e Initial load
duke
parents:
diff changeset
2593 // 100 LoadP _ 80 20 ... alias_index=4
a61af66fc99e Initial load
duke
parents:
diff changeset
2594 //
a61af66fc99e Initial load
duke
parents:
diff changeset
2595 void ConnectionGraph::split_unique_types(GrowableArray<Node *> &alloc_worklist) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2596 GrowableArray<Node *> memnode_worklist;
a61af66fc99e Initial load
duke
parents:
diff changeset
2597 GrowableArray<PhiNode *> orig_phis;
1921
e4fcbeb5a698 6991188: C2 Crashes while compiling method
kvn
parents: 1815
diff changeset
2598 PhaseIterGVN *igvn = _igvn;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2599 uint new_index_start = (uint) _compile->num_alias_types();
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2600 Arena* arena = Thread::current()->resource_area();
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2601 VectorSet visited(arena);
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2602 ideal_nodes.clear(); // Reset for use with set_map/get_map.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2603 uint unique_old = _compile->unique();
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2604
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2605 // Phase 1: Process possible allocations from alloc_worklist.
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2606 // Create instance types for the CheckCastPP for allocations where possible.
244
524eca34ea76 6684714: Optimize EA Connection Graph build performance
kvn
parents: 223
diff changeset
2607 //
524eca34ea76 6684714: Optimize EA Connection Graph build performance
kvn
parents: 223
diff changeset
2608 // (Note: don't forget to change the order of the second AddP node on
524eca34ea76 6684714: Optimize EA Connection Graph build performance
kvn
parents: 223
diff changeset
2609 // the alloc_worklist if the order of the worklist processing is changed,
524eca34ea76 6684714: Optimize EA Connection Graph build performance
kvn
parents: 223
diff changeset
2610 // see the comment in find_second_addp().)
524eca34ea76 6684714: Optimize EA Connection Graph build performance
kvn
parents: 223
diff changeset
2611 //
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2612 while (alloc_worklist.length() != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2613 Node *n = alloc_worklist.pop();
a61af66fc99e Initial load
duke
parents:
diff changeset
2614 uint ni = n->_idx;
a61af66fc99e Initial load
duke
parents:
diff changeset
2615 if (n->is_Call()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2616 CallNode *alloc = n->as_Call();
a61af66fc99e Initial load
duke
parents:
diff changeset
2617 // copy escape information to call node
244
524eca34ea76 6684714: Optimize EA Connection Graph build performance
kvn
parents: 223
diff changeset
2618 PointsToNode* ptn = ptnode_adr(alloc->_idx);
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2619 PointsToNode::EscapeState es = ptn->escape_state();
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2620 // We have an allocation or call which returns a Java object,
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2621 // see if it is unescaped.
4058
59e515ee9354 7059047: EA: can't find initializing store with several CheckCastPP
kvn
parents: 4046
diff changeset
2622 if (es != PointsToNode::NoEscape || !ptn->scalar_replaceable())
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2623 continue;
784
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2624 // Find CheckCastPP for the allocate or for the return value of a call
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2625 n = alloc->result_cast();
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2626 if (n == NULL) { // No uses except Initialize node
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2627 if (alloc->is_Allocate()) {
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2628 // Set the scalar_replaceable flag for allocation
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2629 // so it could be eliminated if it has no uses.
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2630 alloc->as_Allocate()->_is_scalar_replaceable = true;
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2631 }
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2632 continue;
39
76256d272075 6667612: (Escape Analysis) disable loop cloning if it has a scalar replaceable allocation
kvn
parents: 38
diff changeset
2633 }
784
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2634 if (!n->is_CheckCastPP()) { // not unique CheckCastPP.
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2635 assert(!alloc->is_Allocate(), "allocation should have unique type");
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2636 continue;
784
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2637 }
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2638
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2639 // The inline code for Object.clone() casts the allocation result to
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
2640 // java.lang.Object and then to the actual type of the allocated
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2641 // object. Detect this case and use the second cast.
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
2642 // Also detect j.l.reflect.Array.newInstance(jobject, jint) case when
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
2643 // the allocation result is cast to java.lang.Object and then
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
2644 // to the actual Array type.
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2645 if (alloc->is_Allocate() && n->as_Type()->type() == TypeInstPtr::NOTNULL
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
2646 && (alloc->is_AllocateArray() ||
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
2647 igvn->type(alloc->in(AllocateNode::KlassNode)) != TypeKlassPtr::OBJECT)) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2648 Node *cast2 = NULL;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2649 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2650 Node *use = n->fast_out(i);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2651 if (use->is_CheckCastPP()) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2652 cast2 = use;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2653 break;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2654 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2655 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2656 if (cast2 != NULL) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2657 n = cast2;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2658 } else {
784
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2659 // Non-scalar replaceable if the allocation type is unknown statically
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2660 // (reflection allocation), the object can't be restored during
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2661 // deoptimization without precise type.
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2662 continue;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2663 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2664 }
784
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2665 if (alloc->is_Allocate()) {
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2666 // Set the scalar_replaceable flag for allocation
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2667 // so it could be eliminated.
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2668 alloc->as_Allocate()->_is_scalar_replaceable = true;
b2934faac289 6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents: 605
diff changeset
2669 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2670 set_escape_state(ptnode_adr(n->_idx), es); // CheckCastPP escape state
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
2671 // in order for an object to be scalar-replaceable, it must be:
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2672 // - a direct allocation (not a call returning an object)
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2673 // - non-escaping
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2674 // - eligible to be a unique type
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2675 // - not determined to be ineligible by escape analysis
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2676 set_map(alloc, n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2677 set_map(n, alloc);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2678 const TypeOopPtr *t = igvn->type(n)->isa_oopptr();
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2679 if (t == NULL)
4058
59e515ee9354 7059047: EA: can't find initializing store with several CheckCastPP
kvn
parents: 4046
diff changeset
2680 continue; // not a TypeOopPtr
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2681 const TypeOopPtr* tinst = t->cast_to_exactness(true)->is_oopptr()->cast_to_instance_id(ni);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2682 igvn->hash_delete(n);
a61af66fc99e Initial load
duke
parents:
diff changeset
2683 igvn->set_type(n, tinst);
a61af66fc99e Initial load
duke
parents:
diff changeset
2684 n->raise_bottom_type(tinst);
a61af66fc99e Initial load
duke
parents:
diff changeset
2685 igvn->hash_insert(n);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2686 record_for_optimizer(n);
4058
59e515ee9354 7059047: EA: can't find initializing store with several CheckCastPP
kvn
parents: 4046
diff changeset
2687 if (alloc->is_Allocate() && (t->isa_instptr() || t->isa_aryptr())) {
163
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2688
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2689 // First, put on the worklist all Field edges from Connection Graph
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2690 // which is more accurate then putting immediate users from Ideal Graph.
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2691 for (EdgeIterator e(ptn); e.has_next(); e.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2692 PointsToNode* tgt = e.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2693 Node* use = tgt->ideal_node();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2694 assert(tgt->is_Field() && use->is_AddP(),
163
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2695 "only AddP nodes are Field edges in CG");
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2696 if (use->outcnt() > 0) { // Don't process dead nodes
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2697 Node* addp2 = find_second_addp(use, use->in(AddPNode::Base));
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2698 if (addp2 != NULL) {
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2699 assert(alloc->is_AllocateArray(),"array allocation was expected");
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2700 alloc_worklist.append_if_missing(addp2);
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2701 }
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2702 alloc_worklist.append_if_missing(use);
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2703 }
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2704 }
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2705
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2706 // An allocation may have an Initialize which has raw stores. Scan
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2707 // the users of the raw allocation result and push AddP users
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2708 // on alloc_worklist.
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2709 Node *raw_result = alloc->proj_out(TypeFunc::Parms);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2710 assert (raw_result != NULL, "must have an allocation result");
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2711 for (DUIterator_Fast imax, i = raw_result->fast_outs(imax); i < imax; i++) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2712 Node *use = raw_result->fast_out(i);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2713 if (use->is_AddP() && use->outcnt() > 0) { // Don't process dead nodes
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2714 Node* addp2 = find_second_addp(use, raw_result);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2715 if (addp2 != NULL) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2716 assert(alloc->is_AllocateArray(),"array allocation was expected");
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2717 alloc_worklist.append_if_missing(addp2);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2718 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2719 alloc_worklist.append_if_missing(use);
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2720 } else if (use->is_MemBar()) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2721 memnode_worklist.append_if_missing(use);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2722 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2723 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2724 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2725 } else if (n->is_AddP()) {
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2726 JavaObjectNode* jobj = unique_java_object(get_addp_base(n));
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2727 if (jobj == NULL || jobj == phantom_obj) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2728 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2729 ptnode_adr(get_addp_base(n)->_idx)->dump();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2730 ptnode_adr(n->_idx)->dump();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2731 assert(jobj != NULL && jobj != phantom_obj, "escaped allocation");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2732 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2733 _compile->record_failure(C2Compiler::retry_no_escape_analysis());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2734 return;
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2735 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2736 Node *base = get_map(jobj->idx()); // CheckCastPP node
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2737 if (!split_AddP(n, base)) continue; // wrong type from dead path
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2738 } else if (n->is_Phi() ||
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2739 n->is_CheckCastPP() ||
168
7793bd37a336 6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents: 164
diff changeset
2740 n->is_EncodeP() ||
7793bd37a336 6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents: 164
diff changeset
2741 n->is_DecodeN() ||
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2742 (n->is_ConstraintCast() && n->Opcode() == Op_CastPP)) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2743 if (visited.test_set(n->_idx)) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2744 assert(n->is_Phi(), "loops only through Phi's");
a61af66fc99e Initial load
duke
parents:
diff changeset
2745 continue; // already processed
a61af66fc99e Initial load
duke
parents:
diff changeset
2746 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2747 JavaObjectNode* jobj = unique_java_object(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2748 if (jobj == NULL || jobj == phantom_obj) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2749 #ifdef ASSERT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2750 ptnode_adr(n->_idx)->dump();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2751 assert(jobj != NULL && jobj != phantom_obj, "escaped allocation");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2752 #endif
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2753 _compile->record_failure(C2Compiler::retry_no_escape_analysis());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2754 return;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2755 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2756 Node *val = get_map(jobj->idx()); // CheckCastPP node
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2757 TypeNode *tn = n->as_Type();
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2758 const TypeOopPtr* tinst = igvn->type(val)->isa_oopptr();
223
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
2759 assert(tinst != NULL && tinst->is_known_instance() &&
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2760 tinst->instance_id() == jobj->idx() , "instance type expected.");
163
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2761
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2762 const Type *tn_type = igvn->type(tn);
223
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
2763 const TypeOopPtr *tn_t;
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
2764 if (tn_type->isa_narrowoop()) {
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
2765 tn_t = tn_type->make_ptr()->isa_oopptr();
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
2766 } else {
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
2767 tn_t = tn_type->isa_oopptr();
1dd146f17531 6716441: error in meet with +DoEscapeAnalysis
kvn
parents: 221
diff changeset
2768 }
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2769 if (tn_t != NULL && tinst->klass()->is_subtype_of(tn_t->klass())) {
163
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2770 if (tn_type->isa_narrowoop()) {
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2771 tn_type = tinst->make_narrowoop();
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2772 } else {
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2773 tn_type = tinst;
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2774 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2775 igvn->hash_delete(tn);
163
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2776 igvn->set_type(tn, tn_type);
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null
kvn
parents: 124
diff changeset
2777 tn->set_type(tn_type);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2778 igvn->hash_insert(tn);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2779 record_for_optimizer(n);
293
c3e045194476 6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
kvn
parents: 253
diff changeset
2780 } else {
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2781 assert(tn_type == TypePtr::NULL_PTR ||
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2782 tn_t != NULL && !tinst->klass()->is_subtype_of(tn_t->klass()),
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2783 "unexpected type");
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2784 continue; // Skip dead path with different type
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2785 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2786 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2787 } else {
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2788 debug_only(n->dump();)
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2789 assert(false, "EA: unexpected node");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2790 continue;
a61af66fc99e Initial load
duke
parents:
diff changeset
2791 }
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2792 // push allocation's users on appropriate worklist
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2793 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2794 Node *use = n->fast_out(i);
a61af66fc99e Initial load
duke
parents:
diff changeset
2795 if(use->is_Mem() && use->in(MemNode::Address) == n) {
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2796 // Load/store to instance's field
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2797 memnode_worklist.append_if_missing(use);
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2798 } else if (use->is_MemBar()) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2799 memnode_worklist.append_if_missing(use);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2800 } else if (use->is_AddP() && use->outcnt() > 0) { // No dead nodes
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2801 Node* addp2 = find_second_addp(use, n);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2802 if (addp2 != NULL) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2803 alloc_worklist.append_if_missing(addp2);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2804 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2805 alloc_worklist.append_if_missing(use);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2806 } else if (use->is_Phi() ||
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2807 use->is_CheckCastPP() ||
168
7793bd37a336 6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents: 164
diff changeset
2808 use->is_EncodeP() ||
7793bd37a336 6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents: 164
diff changeset
2809 use->is_DecodeN() ||
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2810 (use->is_ConstraintCast() && use->Opcode() == Op_CastPP)) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2811 alloc_worklist.append_if_missing(use);
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2812 #ifdef ASSERT
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2813 } else if (use->is_Mem()) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2814 assert(use->in(MemNode::Address) != n, "EA: missing allocation reference path");
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2815 } else if (use->is_MergeMem()) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2816 assert(_mergemem_worklist.contains(use->as_MergeMem()), "EA: missing MergeMem node in the worklist");
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2817 } else if (use->is_SafePoint()) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2818 // Look for MergeMem nodes for calls which reference unique allocation
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2819 // (through CheckCastPP nodes) even for debug info.
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2820 Node* m = use->in(TypeFunc::Memory);
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2821 if (m->is_MergeMem()) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2822 assert(_mergemem_worklist.contains(m->as_MergeMem()), "EA: missing MergeMem node in the worklist");
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2823 }
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2824 } else {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2825 uint op = use->Opcode();
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2826 if (!(op == Op_CmpP || op == Op_Conv2B ||
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2827 op == Op_CastP2X || op == Op_StoreCM ||
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2828 op == Op_FastLock || op == Op_AryEq || op == Op_StrComp ||
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2829 op == Op_StrEquals || op == Op_StrIndexOf)) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2830 n->dump();
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2831 use->dump();
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2832 assert(false, "EA: missing allocation reference path");
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2833 }
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2834 #endif
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2835 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2836 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2837
a61af66fc99e Initial load
duke
parents:
diff changeset
2838 }
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2839 // New alias types were created in split_AddP().
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2840 uint new_index_end = (uint) _compile->num_alias_types();
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2841 assert(unique_old == _compile->unique(), "there should be no new ideal nodes after Phase 1");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2842
a61af66fc99e Initial load
duke
parents:
diff changeset
2843 // Phase 2: Process MemNode's from memnode_worklist. compute new address type and
a61af66fc99e Initial load
duke
parents:
diff changeset
2844 // compute new values for Memory inputs (the Memory inputs are not
a61af66fc99e Initial load
duke
parents:
diff changeset
2845 // actually updated until phase 4.)
a61af66fc99e Initial load
duke
parents:
diff changeset
2846 if (memnode_worklist.length() == 0)
a61af66fc99e Initial load
duke
parents:
diff changeset
2847 return; // nothing to do
a61af66fc99e Initial load
duke
parents:
diff changeset
2848 while (memnode_worklist.length() != 0) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2849 Node *n = memnode_worklist.pop();
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2850 if (visited.test_set(n->_idx))
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2851 continue;
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2852 if (n->is_Phi() || n->is_ClearArray()) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2853 // we don't need to do anything, but the users must be pushed
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2854 } else if (n->is_MemBar()) { // Initialize, MemBar nodes
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2855 // we don't need to do anything, but the users must be pushed
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2856 n = n->as_MemBar()->proj_out(TypeFunc::Memory);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2857 if (n == NULL)
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2858 continue;
a61af66fc99e Initial load
duke
parents:
diff changeset
2859 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2860 assert(n->is_Mem(), "memory node required.");
a61af66fc99e Initial load
duke
parents:
diff changeset
2861 Node *addr = n->in(MemNode::Address);
a61af66fc99e Initial load
duke
parents:
diff changeset
2862 const Type *addr_t = igvn->type(addr);
a61af66fc99e Initial load
duke
parents:
diff changeset
2863 if (addr_t == Type::TOP)
a61af66fc99e Initial load
duke
parents:
diff changeset
2864 continue;
a61af66fc99e Initial load
duke
parents:
diff changeset
2865 assert (addr_t->isa_ptr() != NULL, "pointer type required.");
a61af66fc99e Initial load
duke
parents:
diff changeset
2866 int alias_idx = _compile->get_alias_index(addr_t->is_ptr());
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2867 assert ((uint)alias_idx < new_index_end, "wrong alias index");
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2868 Node *mem = find_inst_mem(n->in(MemNode::Memory), alias_idx, orig_phis);
38
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2869 if (_compile->failing()) {
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2870 return;
b789bcaf2dd9 6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents: 0
diff changeset
2871 }
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2872 if (mem != n->in(MemNode::Memory)) {
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2873 // We delay the memory edge update since we need old one in
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2874 // MergeMem code below when instances memory slices are separated.
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2875 set_map(n, mem);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2876 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2877 if (n->is_Load()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2878 continue; // don't push users
a61af66fc99e Initial load
duke
parents:
diff changeset
2879 } else if (n->is_LoadStore()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2880 // get the memory projection
a61af66fc99e Initial load
duke
parents:
diff changeset
2881 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2882 Node *use = n->fast_out(i);
a61af66fc99e Initial load
duke
parents:
diff changeset
2883 if (use->Opcode() == Op_SCMemProj) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2884 n = use;
a61af66fc99e Initial load
duke
parents:
diff changeset
2885 break;
a61af66fc99e Initial load
duke
parents:
diff changeset
2886 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2887 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2888 assert(n->Opcode() == Op_SCMemProj, "memory projection required");
a61af66fc99e Initial load
duke
parents:
diff changeset
2889 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2890 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2891 // push user on appropriate worklist
a61af66fc99e Initial load
duke
parents:
diff changeset
2892 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2893 Node *use = n->fast_out(i);
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2894 if (use->is_Phi() || use->is_ClearArray()) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2895 memnode_worklist.append_if_missing(use);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2896 } else if(use->is_Mem() && use->in(MemNode::Memory) == n) {
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2897 if (use->Opcode() == Op_StoreCM) // Ignore cardmark stores
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2898 continue;
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2899 memnode_worklist.append_if_missing(use);
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2900 } else if (use->is_MemBar()) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2901 memnode_worklist.append_if_missing(use);
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2902 #ifdef ASSERT
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2903 } else if(use->is_Mem()) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2904 assert(use->in(MemNode::Memory) != n, "EA: missing memory path");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2905 } else if (use->is_MergeMem()) {
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2906 assert(_mergemem_worklist.contains(use->as_MergeMem()), "EA: missing MergeMem node in the worklist");
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2907 } else {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2908 uint op = use->Opcode();
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2909 if (!(op == Op_StoreCM ||
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2910 (op == Op_CallLeaf && use->as_CallLeaf()->_name != NULL &&
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2911 strcmp(use->as_CallLeaf()->_name, "g1_wb_pre") == 0) ||
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2912 op == Op_AryEq || op == Op_StrComp ||
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2913 op == Op_StrEquals || op == Op_StrIndexOf)) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2914 n->dump();
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2915 use->dump();
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2916 assert(false, "EA: missing memory path");
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2917 }
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2918 #endif
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2919 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2920 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2921 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2922
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2923 // Phase 3: Process MergeMem nodes from mergemem_worklist.
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2924 // Walk each memory slice moving the first node encountered of each
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2925 // instance type to the the input corresponding to its alias index.
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2926 uint length = _mergemem_worklist.length();
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2927 for( uint next = 0; next < length; ++next ) {
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2928 MergeMemNode* nmm = _mergemem_worklist.at(next);
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2929 assert(!visited.test_set(nmm->_idx), "should not be visited before");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2930 // Note: we don't want to use MergeMemStream here because we only want to
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2931 // scan inputs which exist at the start, not ones we add during processing.
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2932 // Note 2: MergeMem may already contains instance memory slices added
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2933 // during find_inst_mem() call when memory nodes were processed above.
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
2934 igvn->hash_delete(nmm);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2935 uint nslices = nmm->req();
a61af66fc99e Initial load
duke
parents:
diff changeset
2936 for (uint i = Compile::AliasIdxRaw+1; i < nslices; i++) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2937 Node* mem = nmm->in(i);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2938 Node* cur = NULL;
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2939 if (mem == NULL || mem->is_top())
a61af66fc99e Initial load
duke
parents:
diff changeset
2940 continue;
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2941 // First, update mergemem by moving memory nodes to corresponding slices
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2942 // if their type became more precise since this mergemem was created.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2943 while (mem->is_Mem()) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2944 const Type *at = igvn->type(mem->in(MemNode::Address));
a61af66fc99e Initial load
duke
parents:
diff changeset
2945 if (at != Type::TOP) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2946 assert (at->isa_ptr() != NULL, "pointer type required.");
a61af66fc99e Initial load
duke
parents:
diff changeset
2947 uint idx = (uint)_compile->get_alias_index(at->is_ptr());
a61af66fc99e Initial load
duke
parents:
diff changeset
2948 if (idx == i) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2949 if (cur == NULL)
a61af66fc99e Initial load
duke
parents:
diff changeset
2950 cur = mem;
a61af66fc99e Initial load
duke
parents:
diff changeset
2951 } else {
a61af66fc99e Initial load
duke
parents:
diff changeset
2952 if (idx >= nmm->req() || nmm->is_empty_memory(nmm->in(idx))) {
a61af66fc99e Initial load
duke
parents:
diff changeset
2953 nmm->set_memory_at(idx, mem);
a61af66fc99e Initial load
duke
parents:
diff changeset
2954 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2955 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2956 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2957 mem = mem->in(MemNode::Memory);
a61af66fc99e Initial load
duke
parents:
diff changeset
2958 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2959 nmm->set_memory_at(i, (cur != NULL) ? cur : mem);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2960 // Find any instance of the current type if we haven't encountered
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2961 // already a memory slice of the instance along the memory chain.
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2962 for (uint ni = new_index_start; ni < new_index_end; ni++) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2963 if((uint)_compile->get_general_index(ni) == i) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2964 Node *m = (ni >= nmm->req()) ? nmm->empty_memory() : nmm->in(ni);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2965 if (nmm->is_empty_memory(m)) {
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2966 Node* result = find_inst_mem(mem, ni, orig_phis);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2967 if (_compile->failing()) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2968 return;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2969 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2970 nmm->set_memory_at(ni, result);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2971 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2972 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2973 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2974 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2975 // Find the rest of instances values
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2976 for (uint ni = new_index_start; ni < new_index_end; ni++) {
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2977 const TypeOopPtr *tinst = _compile->get_adr_type(ni)->isa_oopptr();
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2978 Node* result = step_through_mergemem(nmm, ni, tinst);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2979 if (result == nmm->base_memory()) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2980 // Didn't find instance memory, search through general slice recursively.
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
2981 result = nmm->memory_at(_compile->get_general_index(ni));
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
2982 result = find_inst_mem(result, ni, orig_phis);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2983 if (_compile->failing()) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2984 return;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2985 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2986 nmm->set_memory_at(ni, result);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2987 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2988 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2989 igvn->hash_insert(nmm);
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2990 record_for_optimizer(nmm);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2991 }
a61af66fc99e Initial load
duke
parents:
diff changeset
2992
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2993 // Phase 4: Update the inputs of non-instance memory Phis and
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
2994 // the Memory input of memnodes
0
a61af66fc99e Initial load
duke
parents:
diff changeset
2995 // First update the inputs of any non-instance Phi's from
a61af66fc99e Initial load
duke
parents:
diff changeset
2996 // which we split out an instance Phi. Note we don't have
a61af66fc99e Initial load
duke
parents:
diff changeset
2997 // to recursively process Phi's encounted on the input memory
a61af66fc99e Initial load
duke
parents:
diff changeset
2998 // chains as is done in split_memory_phi() since they will
a61af66fc99e Initial load
duke
parents:
diff changeset
2999 // also be processed here.
247
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
3000 for (int j = 0; j < orig_phis.length(); j++) {
02a35ad4adf8 6723160: Nightly failure: Error: meet not symmetric
kvn
parents: 245
diff changeset
3001 PhiNode *phi = orig_phis.at(j);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3002 int alias_idx = _compile->get_alias_index(phi->adr_type());
a61af66fc99e Initial load
duke
parents:
diff changeset
3003 igvn->hash_delete(phi);
a61af66fc99e Initial load
duke
parents:
diff changeset
3004 for (uint i = 1; i < phi->req(); i++) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3005 Node *mem = phi->in(i);
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3006 Node *new_mem = find_inst_mem(mem, alias_idx, orig_phis);
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3007 if (_compile->failing()) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3008 return;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3009 }
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3010 if (mem != new_mem) {
a61af66fc99e Initial load
duke
parents:
diff changeset
3011 phi->set_req(i, new_mem);
a61af66fc99e Initial load
duke
parents:
diff changeset
3012 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3013 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3014 igvn->hash_insert(phi);
a61af66fc99e Initial load
duke
parents:
diff changeset
3015 record_for_optimizer(phi);
a61af66fc99e Initial load
duke
parents:
diff changeset
3016 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3017
a61af66fc99e Initial load
duke
parents:
diff changeset
3018 // Update the memory inputs of MemNodes with the value we computed
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
3019 // in Phase 2 and move stores memory users to corresponding memory slices.
3278
66b0e2371912 7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents: 2459
diff changeset
3020 // Disable memory split verification code until the fix for 6984348.
66b0e2371912 7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents: 2459
diff changeset
3021 // Currently it produces false negative results since it does not cover all cases.
66b0e2371912 7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents: 2459
diff changeset
3022 #if 0 // ifdef ASSERT
2249
3763ca6579b7 7013538: Java memory leak with escape analysis
kvn
parents: 2086
diff changeset
3023 visited.Reset();
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
3024 Node_Stack old_mems(arena, _compile->unique() >> 2);
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
3025 #endif
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3026 for (uint i = 0; i < ideal_nodes.size(); i++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3027 Node* n = ideal_nodes.at(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3028 Node* nmem = get_map(n->_idx);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3029 assert(nmem != NULL, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3030 if (n->is_Mem()) {
3278
66b0e2371912 7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents: 2459
diff changeset
3031 #if 0 // ifdef ASSERT
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3032 Node* old_mem = n->in(MemNode::Memory);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3033 if (!visited.test_set(old_mem->_idx)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3034 old_mems.push(old_mem, old_mem->outcnt());
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3035 }
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
3036 #endif
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3037 assert(n->in(MemNode::Memory) != nmem, "sanity");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3038 if (!n->is_Load()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3039 // Move memory users of a store first.
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3040 move_inst_mem(n, orig_phis);
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3041 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3042 // Now update memory input
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3043 igvn->hash_delete(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3044 n->set_req(MemNode::Memory, nmem);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3045 igvn->hash_insert(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3046 record_for_optimizer(n);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3047 } else {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3048 assert(n->is_Allocate() || n->is_CheckCastPP() ||
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3049 n->is_AddP() || n->is_Phi(), "unknown node used for set_map()");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3050 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3051 }
3278
66b0e2371912 7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents: 2459
diff changeset
3052 #if 0 // ifdef ASSERT
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
3053 // Verify that memory was split correctly
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
3054 while (old_mems.is_nonempty()) {
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
3055 Node* old_mem = old_mems.node();
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
3056 uint old_cnt = old_mems.index();
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
3057 old_mems.pop();
3278
66b0e2371912 7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents: 2459
diff changeset
3058 assert(old_cnt == old_mem->outcnt(), "old mem could be lost");
1101
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
3059 }
7fee0a6cc6d4 6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents: 1100
diff changeset
3060 #endif
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3061 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3062
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3063 #ifndef PRODUCT
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3064 static const char *node_type_names[] = {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3065 "UnknownType",
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3066 "JavaObject",
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3067 "LocalVar",
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3068 "Field",
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3069 "Arraycopy"
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3070 };
4937
73df3733f2eb 7129284: +DoEscapeAnalysis regression w/ early build of 7u4 (HotSpot 23) on Linux
kvn
parents: 4777
diff changeset
3071
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3072 static const char *esc_names[] = {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3073 "UnknownEscape",
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3074 "NoEscape",
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3075 "ArgEscape",
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3076 "GlobalEscape"
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3077 };
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3078
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3079 void PointsToNode::dump(bool print_state) const {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3080 NodeType nt = node_type();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3081 tty->print("%s ", node_type_names[(int) nt]);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3082 if (print_state) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3083 EscapeState es = escape_state();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3084 EscapeState fields_es = fields_escape_state();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3085 tty->print("%s(%s) ", esc_names[(int)es], esc_names[(int)fields_es]);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3086 if (nt == PointsToNode::JavaObject && !this->scalar_replaceable())
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3087 tty->print("NSR");
4113
8c57262447d3 7105605: Use EA info to optimize pointers compare
kvn
parents: 4058
diff changeset
3088 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3089 if (is_Field()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3090 FieldNode* f = (FieldNode*)this;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3091 tty->print("(");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3092 for (BaseIterator i(f); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3093 PointsToNode* b = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3094 tty->print(" %d%s", b->idx(),(b->is_JavaObject() ? "P" : ""));
4763
1dc233a8c7fe 7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents: 4122
diff changeset
3095 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3096 tty->print(" )");
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3097 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3098 tty->print("[");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3099 for (EdgeIterator i(this); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3100 PointsToNode* e = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3101 tty->print(" %d%s%s", e->idx(),(e->is_JavaObject() ? "P" : (e->is_Field() ? "F" : "")), e->is_Arraycopy() ? "cp" : "");
1100
f96a1a986f7b 6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents: 1072
diff changeset
3102 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3103 tty->print(" [");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3104 for (UseIterator i(this); i.has_next(); i.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3105 PointsToNode* u = i.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3106 bool is_base = false;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3107 if (PointsToNode::is_base_use(u)) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3108 is_base = true;
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3109 u = PointsToNode::get_use_node(u)->as_Field();
4058
59e515ee9354 7059047: EA: can't find initializing store with several CheckCastPP
kvn
parents: 4046
diff changeset
3110 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3111 tty->print(" %d%s%s", u->idx(), is_base ? "b" : "", u->is_Arraycopy() ? "cp" : "");
4113
8c57262447d3 7105605: Use EA info to optimize pointers compare
kvn
parents: 4058
diff changeset
3112 }
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3113 tty->print(" ]] ");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3114 if (_node == NULL)
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3115 tty->print_cr("<null>");
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3116 else
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3117 _node->dump();
4113
8c57262447d3 7105605: Use EA info to optimize pointers compare
kvn
parents: 4058
diff changeset
3118 }
8c57262447d3 7105605: Use EA info to optimize pointers compare
kvn
parents: 4058
diff changeset
3119
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3120 void ConnectionGraph::dump(GrowableArray<PointsToNode*>& ptnodes_worklist) {
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3121 bool first = true;
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3122 int ptnodes_length = ptnodes_worklist.length();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3123 for (int i = 0; i < ptnodes_length; i++) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3124 PointsToNode *ptn = ptnodes_worklist.at(i);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3125 if (ptn == NULL || !ptn->is_JavaObject())
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3126 continue;
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3127 PointsToNode::EscapeState es = ptn->escape_state();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3128 if (ptn->ideal_node()->is_Allocate() && (es == PointsToNode::NoEscape || Verbose)) {
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3129 if (first) {
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3130 tty->cr();
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3131 tty->print("======== Connection graph for ");
244
524eca34ea76 6684714: Optimize EA Connection Graph build performance
kvn
parents: 223
diff changeset
3132 _compile->method()->print_short_name();
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3133 tty->cr();
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3134 first = false;
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3135 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3136 ptn->dump();
5948
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3137 // Print all locals and fields which reference this allocation
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3138 for (UseIterator j(ptn); j.has_next(); j.next()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3139 PointsToNode* use = j.get();
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3140 if (use->is_LocalVar()) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3141 use->dump(Verbose);
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3142 } else if (Verbose) {
ee138854b3a6 7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents: 5901
diff changeset
3143 use->dump();
65
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3144 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3145 }
99269dbf4ba8 6674588: (Escape Analysis) Improve Escape Analysis code
kvn
parents: 39
diff changeset
3146 tty->cr();
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3147 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3148 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3149 }
a61af66fc99e Initial load
duke
parents:
diff changeset
3150 #endif