Mercurial > hg > graal-jvmci-8
annotate src/share/vm/opto/escape.cpp @ 23660:b5f3a471e646
Merge.
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 01 Jun 2016 00:11:44 +0200 |
parents | dd9cc155639c 3f47111161d7 |
children | f13e777eb255 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "ci/bcEscapeAnalyzer.hpp" | |
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27 #include "compiler/compileLog.hpp" |
1972 | 28 #include "libadt/vectset.hpp" |
29 #include "memory/allocation.hpp" | |
30 #include "opto/c2compiler.hpp" | |
31 #include "opto/callnode.hpp" | |
32 #include "opto/cfgnode.hpp" | |
33 #include "opto/compile.hpp" | |
34 #include "opto/escape.hpp" | |
35 #include "opto/phaseX.hpp" | |
36 #include "opto/rootnode.hpp" | |
0 | 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 _in_worklist(C->comp_arena()), |
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41 _next_pidx(0), |
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42 _collecting(true), |
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43 _verify(false), |
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44 _compile(C), |
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45 _igvn(igvn), |
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46 _node_map(C->comp_arena()) { |
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47 // Add unknown java object. |
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48 add_java_object(C->top(), PointsToNode::GlobalEscape); |
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49 phantom_obj = ptnode_adr(C->top()->_idx)->as_JavaObject(); |
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50 // Add ConP(#NULL) and ConN(#NULL) nodes. |
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51 Node* oop_null = igvn->zerocon(T_OBJECT); |
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52 assert(oop_null->_idx < nodes_size(), "should be created already"); |
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53 add_java_object(oop_null, PointsToNode::NoEscape); |
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54 null_obj = ptnode_adr(oop_null->_idx)->as_JavaObject(); |
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55 if (UseCompressedOops) { |
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56 Node* noop_null = igvn->zerocon(T_NARROWOOP); |
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57 assert(noop_null->_idx < nodes_size(), "should be created already"); |
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58 map_ideal_node(noop_null, null_obj); |
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59 } |
4113 | 60 _pcmp_neq = NULL; // Should be initialized |
61 _pcmp_eq = NULL; | |
0 | 62 } |
63 | |
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64 bool ConnectionGraph::has_candidates(Compile *C) { |
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65 // EA brings benefits only when the code has allocations and/or locks which |
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66 // are represented by ideal Macro nodes. |
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67 int cnt = C->macro_count(); |
10278 | 68 for (int i = 0; i < cnt; i++) { |
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69 Node *n = C->macro_node(i); |
10278 | 70 if (n->is_Allocate()) |
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71 return true; |
10278 | 72 if (n->is_Lock()) { |
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73 Node* obj = n->as_Lock()->obj_node()->uncast(); |
10278 | 74 if (!(obj->is_Parm() || obj->is_Con())) |
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75 return true; |
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76 } |
10278 | 77 if (n->is_CallStaticJava() && |
78 n->as_CallStaticJava()->is_boxing_method()) { | |
79 return true; | |
80 } | |
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81 } |
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82 return false; |
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83 } |
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84 |
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85 void ConnectionGraph::do_analysis(Compile *C, PhaseIterGVN *igvn) { |
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86 Compile::TracePhase t2("escapeAnalysis", &Phase::_t_escapeAnalysis, true); |
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87 ResourceMark rm; |
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88 |
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89 // Add ConP#NULL and ConN#NULL nodes before ConnectionGraph construction |
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90 // to create space for them in ConnectionGraph::_nodes[]. |
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91 Node* oop_null = igvn->zerocon(T_OBJECT); |
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92 Node* noop_null = igvn->zerocon(T_NARROWOOP); |
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93 ConnectionGraph* congraph = new(C->comp_arena()) ConnectionGraph(C, igvn); |
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94 // Perform escape analysis |
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95 if (congraph->compute_escape()) { |
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96 // There are non escaping objects. |
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97 C->set_congraph(congraph); |
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98 } |
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99 // Cleanup. |
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100 if (oop_null->outcnt() == 0) |
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101 igvn->hash_delete(oop_null); |
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102 if (noop_null->outcnt() == 0) |
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103 igvn->hash_delete(noop_null); |
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104 } |
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105 |
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106 bool ConnectionGraph::compute_escape() { |
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107 Compile* C = _compile; |
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108 PhaseGVN* igvn = _igvn; |
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109 |
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110 // Worklists used by EA. |
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111 Unique_Node_List delayed_worklist; |
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112 GrowableArray<Node*> alloc_worklist; |
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113 GrowableArray<Node*> ptr_cmp_worklist; |
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114 GrowableArray<Node*> storestore_worklist; |
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115 GrowableArray<PointsToNode*> ptnodes_worklist; |
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116 GrowableArray<JavaObjectNode*> java_objects_worklist; |
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117 GrowableArray<JavaObjectNode*> non_escaped_worklist; |
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118 GrowableArray<FieldNode*> oop_fields_worklist; |
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119 DEBUG_ONLY( GrowableArray<Node*> addp_worklist; ) |
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120 |
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121 { Compile::TracePhase t3("connectionGraph", &Phase::_t_connectionGraph, true); |
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122 |
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123 // 1. Populate Connection Graph (CG) with PointsTo nodes. |
10278 | 124 ideal_nodes.map(C->live_nodes(), NULL); // preallocate space |
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125 // Initialize worklist |
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126 if (C->root() != NULL) { |
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127 ideal_nodes.push(C->root()); |
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128 } |
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129 // Processed ideal nodes are unique on ideal_nodes list |
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130 // but several ideal nodes are mapped to the phantom_obj. |
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131 // To avoid duplicated entries on the following worklists |
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132 // add the phantom_obj only once to them. |
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133 ptnodes_worklist.append(phantom_obj); |
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134 java_objects_worklist.append(phantom_obj); |
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135 for( uint next = 0; next < ideal_nodes.size(); ++next ) { |
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136 Node* n = ideal_nodes.at(next); |
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137 // Create PointsTo nodes and add them to Connection Graph. Called |
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138 // only once per ideal node since ideal_nodes is Unique_Node list. |
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139 add_node_to_connection_graph(n, &delayed_worklist); |
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140 PointsToNode* ptn = ptnode_adr(n->_idx); |
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141 if (ptn != NULL && ptn != phantom_obj) { |
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142 ptnodes_worklist.append(ptn); |
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143 if (ptn->is_JavaObject()) { |
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144 java_objects_worklist.append(ptn->as_JavaObject()); |
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145 if ((n->is_Allocate() || n->is_CallStaticJava()) && |
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146 (ptn->escape_state() < PointsToNode::GlobalEscape)) { |
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147 // Only allocations and java static calls results are interesting. |
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148 non_escaped_worklist.append(ptn->as_JavaObject()); |
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149 } |
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150 } else if (ptn->is_Field() && ptn->as_Field()->is_oop()) { |
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151 oop_fields_worklist.append(ptn->as_Field()); |
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152 } |
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153 } |
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154 if (n->is_MergeMem()) { |
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155 // Collect all MergeMem nodes to add memory slices for |
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156 // scalar replaceable objects in split_unique_types(). |
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157 _mergemem_worklist.append(n->as_MergeMem()); |
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158 } else if (OptimizePtrCompare && n->is_Cmp() && |
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159 (n->Opcode() == Op_CmpP || n->Opcode() == Op_CmpN)) { |
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160 // Collect compare pointers nodes. |
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161 ptr_cmp_worklist.append(n); |
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162 } else if (n->is_MemBarStoreStore()) { |
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163 // Collect all MemBarStoreStore nodes so that depending on the |
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164 // escape status of the associated Allocate node some of them |
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165 // may be eliminated. |
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166 storestore_worklist.append(n); |
10278 | 167 } else if (n->is_MemBar() && (n->Opcode() == Op_MemBarRelease) && |
168 (n->req() > MemBarNode::Precedent)) { | |
169 record_for_optimizer(n); | |
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170 #ifdef ASSERT |
10278 | 171 } else if (n->is_AddP()) { |
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172 // Collect address nodes for graph verification. |
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173 addp_worklist.append(n); |
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174 #endif |
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175 } |
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176 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
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177 Node* m = n->fast_out(i); // Get user |
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178 ideal_nodes.push(m); |
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179 } |
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180 } |
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181 if (non_escaped_worklist.length() == 0) { |
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182 _collecting = false; |
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183 return false; // Nothing to do. |
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184 } |
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185 // Add final simple edges to graph. |
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186 while(delayed_worklist.size() > 0) { |
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187 Node* n = delayed_worklist.pop(); |
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188 add_final_edges(n); |
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189 } |
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190 int ptnodes_length = ptnodes_worklist.length(); |
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191 |
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192 #ifdef ASSERT |
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193 if (VerifyConnectionGraph) { |
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194 // Verify that no new simple edges could be created and all |
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195 // local vars has edges. |
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196 _verify = true; |
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197 for (int next = 0; next < ptnodes_length; ++next) { |
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198 PointsToNode* ptn = ptnodes_worklist.at(next); |
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199 add_final_edges(ptn->ideal_node()); |
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200 if (ptn->is_LocalVar() && ptn->edge_count() == 0) { |
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201 ptn->dump(); |
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202 assert(ptn->as_LocalVar()->edge_count() > 0, "sanity"); |
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203 } |
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204 } |
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205 _verify = false; |
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206 } |
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207 #endif |
22826
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208 // Bytecode analyzer BCEscapeAnalyzer, used for Call nodes |
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209 // processing, calls to CI to resolve symbols (types, fields, methods) |
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210 // referenced in bytecode. During symbol resolution VM may throw |
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211 // an exception which CI cleans and converts to compilation failure. |
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212 if (C->failing()) return false; |
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213 |
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214 // 2. Finish Graph construction by propagating references to all |
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215 // java objects through graph. |
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216 if (!complete_connection_graph(ptnodes_worklist, non_escaped_worklist, |
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217 java_objects_worklist, oop_fields_worklist)) { |
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218 // All objects escaped or hit time or iterations limits. |
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219 _collecting = false; |
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220 return false; |
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221 } |
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222 |
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223 // 3. Adjust scalar_replaceable state of nonescaping objects and push |
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224 // scalar replaceable allocations on alloc_worklist for processing |
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225 // in split_unique_types(). |
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226 int non_escaped_length = non_escaped_worklist.length(); |
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227 for (int next = 0; next < non_escaped_length; next++) { |
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228 JavaObjectNode* ptn = non_escaped_worklist.at(next); |
10278 | 229 bool noescape = (ptn->escape_state() == PointsToNode::NoEscape); |
230 Node* n = ptn->ideal_node(); | |
231 if (n->is_Allocate()) { | |
232 n->as_Allocate()->_is_non_escaping = noescape; | |
233 } | |
234 if (n->is_CallStaticJava()) { | |
235 n->as_CallStaticJava()->_is_non_escaping = noescape; | |
236 } | |
237 if (noescape && ptn->scalar_replaceable()) { | |
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238 adjust_scalar_replaceable_state(ptn); |
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239 if (ptn->scalar_replaceable()) { |
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240 alloc_worklist.append(ptn->ideal_node()); |
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241 } |
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242 } |
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243 } |
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244 |
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245 #ifdef ASSERT |
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246 if (VerifyConnectionGraph) { |
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247 // Verify that graph is complete - no new edges could be added or needed. |
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248 verify_connection_graph(ptnodes_worklist, non_escaped_worklist, |
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249 java_objects_worklist, addp_worklist); |
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250 } |
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251 assert(C->unique() == nodes_size(), "no new ideal nodes should be added during ConnectionGraph build"); |
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252 assert(null_obj->escape_state() == PointsToNode::NoEscape && |
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253 null_obj->edge_count() == 0 && |
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254 !null_obj->arraycopy_src() && |
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255 !null_obj->arraycopy_dst(), "sanity"); |
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256 #endif |
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257 |
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258 _collecting = false; |
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259 |
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260 } // TracePhase t3("connectionGraph") |
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261 |
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262 // 4. Optimize ideal graph based on EA information. |
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263 bool has_non_escaping_obj = (non_escaped_worklist.length() > 0); |
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264 if (has_non_escaping_obj) { |
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265 optimize_ideal_graph(ptr_cmp_worklist, storestore_worklist); |
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266 } |
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267 |
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268 #ifndef PRODUCT |
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269 if (PrintEscapeAnalysis) { |
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270 dump(ptnodes_worklist); // Dump ConnectionGraph |
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271 } |
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272 #endif |
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273 |
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274 bool has_scalar_replaceable_candidates = (alloc_worklist.length() > 0); |
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275 #ifdef ASSERT |
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276 if (VerifyConnectionGraph) { |
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277 int alloc_length = alloc_worklist.length(); |
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278 for (int next = 0; next < alloc_length; ++next) { |
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279 Node* n = alloc_worklist.at(next); |
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280 PointsToNode* ptn = ptnode_adr(n->_idx); |
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281 assert(ptn->escape_state() == PointsToNode::NoEscape && ptn->scalar_replaceable(), "sanity"); |
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282 } |
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283 } |
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284 #endif |
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285 |
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286 // 5. Separate memory graph for scalar replaceable allcations. |
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287 if (has_scalar_replaceable_candidates && |
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288 C->AliasLevel() >= 3 && EliminateAllocations) { |
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289 // Now use the escape information to create unique types for |
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290 // scalar replaceable objects. |
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291 split_unique_types(alloc_worklist); |
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292 if (C->failing()) return false; |
10405 | 293 C->print_method(PHASE_AFTER_EA, 2); |
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294 |
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295 #ifdef ASSERT |
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296 } else if (Verbose && (PrintEscapeAnalysis || PrintEliminateAllocations)) { |
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297 tty->print("=== No allocations eliminated for "); |
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298 C->method()->print_short_name(); |
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299 if(!EliminateAllocations) { |
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300 tty->print(" since EliminateAllocations is off ==="); |
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301 } else if(!has_scalar_replaceable_candidates) { |
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302 tty->print(" since there are no scalar replaceable candidates ==="); |
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303 } else if(C->AliasLevel() < 3) { |
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304 tty->print(" since AliasLevel < 3 ==="); |
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305 } |
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306 tty->cr(); |
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307 #endif |
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308 } |
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309 return has_non_escaping_obj; |
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310 } |
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311 |
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312 // Utility function for nodes that load an object |
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313 void ConnectionGraph::add_objload_to_connection_graph(Node *n, Unique_Node_List *delayed_worklist) { |
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314 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because |
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315 // ThreadLocal has RawPtr type. |
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316 const Type* t = _igvn->type(n); |
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317 if (t->make_ptr() != NULL) { |
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318 Node* adr = n->in(MemNode::Address); |
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319 #ifdef ASSERT |
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320 if (!adr->is_AddP()) { |
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321 assert(_igvn->type(adr)->isa_rawptr(), "sanity"); |
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322 } else { |
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323 assert((ptnode_adr(adr->_idx) == NULL || |
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324 ptnode_adr(adr->_idx)->as_Field()->is_oop()), "sanity"); |
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325 } |
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326 #endif |
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327 add_local_var_and_edge(n, PointsToNode::NoEscape, |
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328 adr, delayed_worklist); |
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329 } |
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330 } |
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331 |
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332 // Populate Connection Graph with PointsTo nodes and create simple |
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333 // connection graph edges. |
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334 void ConnectionGraph::add_node_to_connection_graph(Node *n, Unique_Node_List *delayed_worklist) { |
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335 assert(!_verify, "this method sould not be called for verification"); |
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336 PhaseGVN* igvn = _igvn; |
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337 uint n_idx = n->_idx; |
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338 PointsToNode* n_ptn = ptnode_adr(n_idx); |
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339 if (n_ptn != NULL) |
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340 return; // No need to redefine PointsTo node during first iteration. |
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341 |
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342 if (n->is_Call()) { |
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343 // Arguments to allocation and locking don't escape. |
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344 if (n->is_AbstractLock()) { |
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345 // Put Lock and Unlock nodes on IGVN worklist to process them during |
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346 // first IGVN optimization when escape information is still available. |
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347 record_for_optimizer(n); |
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348 } else if (n->is_Allocate()) { |
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349 add_call_node(n->as_Call()); |
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350 record_for_optimizer(n); |
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351 } else { |
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352 if (n->is_CallStaticJava()) { |
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353 const char* name = n->as_CallStaticJava()->_name; |
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354 if (name != NULL && strcmp(name, "uncommon_trap") == 0) |
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355 return; // Skip uncommon traps |
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356 } |
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357 // Don't mark as processed since call's arguments have to be processed. |
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358 delayed_worklist->push(n); |
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359 // Check if a call returns an object. |
10278 | 360 if ((n->as_Call()->returns_pointer() && |
361 n->as_Call()->proj_out(TypeFunc::Parms) != NULL) || | |
362 (n->is_CallStaticJava() && | |
363 n->as_CallStaticJava()->is_boxing_method())) { | |
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364 add_call_node(n->as_Call()); |
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365 } |
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366 } |
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367 return; |
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368 } |
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369 // Put this check here to process call arguments since some call nodes |
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370 // point to phantom_obj. |
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371 if (n_ptn == phantom_obj || n_ptn == null_obj) |
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372 return; // Skip predefined nodes. |
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373 |
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374 int opcode = n->Opcode(); |
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375 switch (opcode) { |
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376 case Op_AddP: { |
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377 Node* base = get_addp_base(n); |
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378 PointsToNode* ptn_base = ptnode_adr(base->_idx); |
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379 // Field nodes are created for all field types. They are used in |
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380 // adjust_scalar_replaceable_state() and split_unique_types(). |
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381 // Note, non-oop fields will have only base edges in Connection |
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382 // Graph because such fields are not used for oop loads and stores. |
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383 int offset = address_offset(n, igvn); |
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384 add_field(n, PointsToNode::NoEscape, offset); |
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385 if (ptn_base == NULL) { |
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386 delayed_worklist->push(n); // Process it later. |
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387 } else { |
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388 n_ptn = ptnode_adr(n_idx); |
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389 add_base(n_ptn->as_Field(), ptn_base); |
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390 } |
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391 break; |
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392 } |
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393 case Op_CastX2P: { |
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394 map_ideal_node(n, phantom_obj); |
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395 break; |
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396 } |
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397 case Op_CastPP: |
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398 case Op_CheckCastPP: |
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399 case Op_EncodeP: |
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400 case Op_DecodeN: |
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401 case Op_EncodePKlass: |
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402 case Op_DecodeNKlass: { |
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403 add_local_var_and_edge(n, PointsToNode::NoEscape, |
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404 n->in(1), delayed_worklist); |
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405 break; |
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406 } |
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407 case Op_CMoveP: { |
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408 add_local_var(n, PointsToNode::NoEscape); |
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409 // Do not add edges during first iteration because some could be |
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410 // not defined yet. |
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411 delayed_worklist->push(n); |
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412 break; |
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413 } |
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414 case Op_ConP: |
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415 case Op_ConN: |
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|
416 case Op_ConNKlass: { |
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417 // assume all oop constants globally escape except for null |
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418 PointsToNode::EscapeState es; |
10278 | 419 const Type* t = igvn->type(n); |
420 if (t == TypePtr::NULL_PTR || t == TypeNarrowOop::NULL_PTR) { | |
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421 es = PointsToNode::NoEscape; |
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422 } else { |
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423 es = PointsToNode::GlobalEscape; |
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|
424 } |
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|
425 add_java_object(n, es); |
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|
426 break; |
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|
427 } |
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428 case Op_CreateEx: { |
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|
429 // assume that all exception objects globally escape |
20585
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8041984: CompilerThread seems to occupy all CPU in a very rare situation
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430 map_ideal_node(n, phantom_obj); |
5948
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431 break; |
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|
432 } |
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433 case Op_LoadKlass: |
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|
434 case Op_LoadNKlass: { |
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|
435 // Unknown class is loaded |
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|
436 map_ideal_node(n, phantom_obj); |
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437 break; |
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|
438 } |
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439 case Op_LoadP: |
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|
440 case Op_LoadN: |
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441 case Op_LoadPLocked: { |
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442 add_objload_to_connection_graph(n, delayed_worklist); |
5948
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|
443 break; |
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|
444 } |
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445 case Op_Parm: { |
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|
446 map_ideal_node(n, phantom_obj); |
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447 break; |
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|
448 } |
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449 case Op_PartialSubtypeCheck: { |
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450 // Produces Null or notNull and is used in only in CmpP so |
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451 // phantom_obj could be used. |
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452 map_ideal_node(n, phantom_obj); // Result is unknown |
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453 break; |
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|
454 } |
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|
455 case Op_Phi: { |
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|
456 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because |
6795
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457 // ThreadLocal has RawPtr type. |
5948
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458 const Type* t = n->as_Phi()->type(); |
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459 if (t->make_ptr() != NULL) { |
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460 add_local_var(n, PointsToNode::NoEscape); |
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461 // Do not add edges during first iteration because some could be |
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462 // not defined yet. |
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|
463 delayed_worklist->push(n); |
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|
464 } |
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|
465 break; |
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|
466 } |
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467 case Op_Proj: { |
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|
468 // we are only interested in the oop result projection from a call |
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469 if (n->as_Proj()->_con == TypeFunc::Parms && n->in(0)->is_Call() && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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470 n->in(0)->as_Call()->returns_pointer()) { |
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471 add_local_var_and_edge(n, PointsToNode::NoEscape, |
ee138854b3a6
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|
472 n->in(0), delayed_worklist); |
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|
473 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
474 break; |
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changeset
|
475 } |
ee138854b3a6
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|
476 case Op_Rethrow: // Exception object escapes |
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|
477 case Op_Return: { |
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478 if (n->req() > TypeFunc::Parms && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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479 igvn->type(n->in(TypeFunc::Parms))->isa_oopptr()) { |
ee138854b3a6
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|
480 // Treat Return value as LocalVar with GlobalEscape escape state. |
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|
481 add_local_var_and_edge(n, PointsToNode::GlobalEscape, |
ee138854b3a6
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482 n->in(TypeFunc::Parms), delayed_worklist); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
483 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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changeset
|
484 break; |
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diff
changeset
|
485 } |
6795
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changeset
|
486 case Op_GetAndSetP: |
7eca5de9e0b6
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487 case Op_GetAndSetN: { |
7eca5de9e0b6
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|
488 add_objload_to_connection_graph(n, delayed_worklist); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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changeset
|
489 // fallthrough |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
490 } |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
491 case Op_StoreP: |
ee138854b3a6
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changeset
|
492 case Op_StoreN: |
6848
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7054512: Compress class pointers after perm gen removal
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changeset
|
493 case Op_StoreNKlass: |
5948
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changeset
|
494 case Op_StorePConditional: |
ee138854b3a6
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changeset
|
495 case Op_CompareAndSwapP: |
ee138854b3a6
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|
496 case Op_CompareAndSwapN: { |
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|
497 Node* adr = n->in(MemNode::Address); |
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|
498 const Type *adr_type = igvn->type(adr); |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
499 adr_type = adr_type->make_ptr(); |
10279
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
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10278
diff
changeset
|
500 if (adr_type == NULL) { |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
501 break; // skip dead nodes |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
502 } |
5948
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changeset
|
503 if (adr_type->isa_oopptr() || |
6848
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7054512: Compress class pointers after perm gen removal
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|
504 (opcode == Op_StoreP || opcode == Op_StoreN || opcode == Op_StoreNKlass) && |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
505 (adr_type == TypeRawPtr::NOTNULL && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
506 adr->in(AddPNode::Address)->is_Proj() && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
507 adr->in(AddPNode::Address)->in(0)->is_Allocate())) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
508 delayed_worklist->push(n); // Process it later. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
509 #ifdef ASSERT |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
510 assert(adr->is_AddP(), "expecting an AddP"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
511 if (adr_type == TypeRawPtr::NOTNULL) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
512 // Verify a raw address for a store captured by Initialize node. |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
513 int offs = (int)igvn->find_intptr_t_con(adr->in(AddPNode::Offset), Type::OffsetBot); |
ee138854b3a6
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changeset
|
514 assert(offs != Type::OffsetBot, "offset must be a constant"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
515 } |
5954
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
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diff
changeset
|
516 #endif |
5948
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|
517 } else { |
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changeset
|
518 // Ignore copy the displaced header to the BoxNode (OSR compilation). |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
519 if (adr->is_BoxLock()) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
520 break; |
5954
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
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diff
changeset
|
521 // Stored value escapes in unsafe access. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
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changeset
|
522 if ((opcode == Op_StoreP) && (adr_type == TypeRawPtr::BOTTOM)) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
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changeset
|
523 // Pointer stores in G1 barriers looks like unsafe access. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
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changeset
|
524 // Ignore such stores to be able scalar replace non-escaping |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
525 // allocations. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
526 if (UseG1GC && adr->is_AddP()) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
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diff
changeset
|
527 Node* base = get_addp_base(adr); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
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changeset
|
528 if (base->Opcode() == Op_LoadP && |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
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changeset
|
529 base->in(MemNode::Address)->is_AddP()) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
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diff
changeset
|
530 adr = base->in(MemNode::Address); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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changeset
|
531 Node* tls = get_addp_base(adr); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
532 if (tls->Opcode() == Op_ThreadLocal) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
533 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
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diff
changeset
|
534 if (offs == in_bytes(JavaThread::satb_mark_queue_offset() + |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
535 PtrQueue::byte_offset_of_buf())) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
536 break; // G1 pre barier previous oop value store. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
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diff
changeset
|
537 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
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diff
changeset
|
538 if (offs == in_bytes(JavaThread::dirty_card_queue_offset() + |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
539 PtrQueue::byte_offset_of_buf())) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
540 break; // G1 post barier card address store. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
541 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
542 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
543 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
544 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
545 delayed_worklist->push(n); // Process unsafe access later. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
546 break; |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
547 } |
5954
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
548 #ifdef ASSERT |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
549 n->dump(1); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
550 assert(false, "not unsafe or G1 barrier raw StoreP"); |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
551 #endif |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
552 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
553 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
554 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
555 case Op_AryEq: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
556 case Op_StrComp: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
557 case Op_StrEquals: |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
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7196
diff
changeset
|
558 case Op_StrIndexOf: |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
559 case Op_EncodeISOArray: { |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
560 add_local_var(n, PointsToNode::ArgEscape); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
561 delayed_worklist->push(n); // Process it later. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
562 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
563 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
564 case Op_ThreadLocal: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
565 add_java_object(n, PointsToNode::ArgEscape); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
566 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
567 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
568 default: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
569 ; // Do nothing for nodes not related to EA. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
570 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
571 return; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
572 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
573 |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
574 #ifdef ASSERT |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
575 #define ELSE_FAIL(name) \ |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
576 /* Should not be called for not pointer type. */ \ |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
577 n->dump(1); \ |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
578 assert(false, name); \ |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
579 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
580 #else |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
581 #define ELSE_FAIL(name) \ |
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 #endif |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
584 |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
585 // Add final simple edges to graph. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
586 void ConnectionGraph::add_final_edges(Node *n) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
587 PointsToNode* n_ptn = ptnode_adr(n->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
588 #ifdef ASSERT |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
589 if (_verify && n_ptn->is_JavaObject()) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
590 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
|
591 #endif |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
592 |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
593 if (n->is_Call()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
594 process_call_arguments(n->as_Call()); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
595 return; |
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 assert(n->is_Store() || n->is_LoadStore() || |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
598 (n_ptn != NULL) && (n_ptn->ideal_node() != NULL), |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
599 "node should be registered already"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
600 int opcode = n->Opcode(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
601 switch (opcode) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
602 case Op_AddP: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
603 Node* base = get_addp_base(n); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
604 PointsToNode* ptn_base = ptnode_adr(base->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
605 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
|
606 add_base(n_ptn->as_Field(), ptn_base); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
607 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
608 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
609 case Op_CastPP: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
610 case Op_CheckCastPP: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
611 case Op_EncodeP: |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
612 case Op_DecodeN: |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
613 case Op_EncodePKlass: |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
614 case Op_DecodeNKlass: { |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
615 add_local_var_and_edge(n, PointsToNode::NoEscape, |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
616 n->in(1), NULL); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
617 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
618 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
619 case Op_CMoveP: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
620 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
|
621 Node* in = n->in(i); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
622 if (in == NULL) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
623 continue; // ignore NULL |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
624 Node* uncast_in = in->uncast(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
625 if (uncast_in->is_top() || uncast_in == n) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
626 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
|
627 PointsToNode* ptn = ptnode_adr(in->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
628 assert(ptn != NULL, "node should be registered"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
629 add_edge(n_ptn, ptn); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
630 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
631 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
632 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
633 case Op_LoadP: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
634 case Op_LoadN: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
635 case Op_LoadPLocked: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
636 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6268
diff
changeset
|
637 // ThreadLocal has RawPtr type. |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
638 const Type* t = _igvn->type(n); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
639 if (t->make_ptr() != NULL) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
640 Node* adr = n->in(MemNode::Address); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
641 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
|
642 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
643 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
644 ELSE_FAIL("Op_LoadP"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
645 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
646 case Op_Phi: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
647 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6268
diff
changeset
|
648 // ThreadLocal has RawPtr type. |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
649 const Type* t = n->as_Phi()->type(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
650 if (t->make_ptr() != NULL) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
651 for (uint i = 1; i < n->req(); i++) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
652 Node* in = n->in(i); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
653 if (in == NULL) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
654 continue; // ignore NULL |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
655 Node* uncast_in = in->uncast(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
656 if (uncast_in->is_top() || uncast_in == n) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
657 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
|
658 PointsToNode* ptn = ptnode_adr(in->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
659 assert(ptn != NULL, "node should be registered"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
660 add_edge(n_ptn, ptn); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
661 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
662 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
663 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
664 ELSE_FAIL("Op_Phi"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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changeset
|
665 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
666 case Op_Proj: { |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
667 // we are only interested in the oop result projection from a call |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
668 if (n->as_Proj()->_con == TypeFunc::Parms && n->in(0)->is_Call() && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
669 n->in(0)->as_Call()->returns_pointer()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
670 add_local_var_and_edge(n, PointsToNode::NoEscape, n->in(0), NULL); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
671 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
672 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
673 ELSE_FAIL("Op_Proj"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
674 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
675 case Op_Rethrow: // Exception object escapes |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
676 case Op_Return: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
677 if (n->req() > TypeFunc::Parms && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
678 _igvn->type(n->in(TypeFunc::Parms))->isa_oopptr()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
679 // Treat Return value as LocalVar with GlobalEscape escape state. |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
680 add_local_var_and_edge(n, PointsToNode::GlobalEscape, |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
681 n->in(TypeFunc::Parms), NULL); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
682 break; |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
683 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
684 ELSE_FAIL("Op_Return"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
685 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
686 case Op_StoreP: |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
687 case Op_StoreN: |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
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diff
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|
688 case Op_StoreNKlass: |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
689 case Op_StorePConditional: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
690 case Op_CompareAndSwapP: |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6268
diff
changeset
|
691 case Op_CompareAndSwapN: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6268
diff
changeset
|
692 case Op_GetAndSetP: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6268
diff
changeset
|
693 case Op_GetAndSetN: { |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
694 Node* adr = n->in(MemNode::Address); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
695 const Type *adr_type = _igvn->type(adr); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
696 adr_type = adr_type->make_ptr(); |
10279
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
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10278
diff
changeset
|
697 #ifdef ASSERT |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
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diff
changeset
|
698 if (adr_type == NULL) { |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
699 n->dump(1); |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
700 assert(adr_type != NULL, "dead node should not be on list"); |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
701 break; |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
702 } |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
703 #endif |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
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10278
diff
changeset
|
704 if (opcode == Op_GetAndSetP || opcode == Op_GetAndSetN) { |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
705 add_local_var_and_edge(n, PointsToNode::NoEscape, adr, NULL); |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
706 } |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
707 if (adr_type->isa_oopptr() || |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
708 (opcode == Op_StoreP || opcode == Op_StoreN || opcode == Op_StoreNKlass) && |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
709 (adr_type == TypeRawPtr::NOTNULL && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
710 adr->in(AddPNode::Address)->is_Proj() && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
711 adr->in(AddPNode::Address)->in(0)->is_Allocate())) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
712 // Point Address to Value |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
713 PointsToNode* adr_ptn = ptnode_adr(adr->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
714 assert(adr_ptn != NULL && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
715 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
|
716 Node *val = n->in(MemNode::ValueIn); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
717 PointsToNode* ptn = ptnode_adr(val->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
718 assert(ptn != NULL, "node should be registered"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
719 add_edge(adr_ptn, ptn); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
720 break; |
5954
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
721 } else if ((opcode == Op_StoreP) && (adr_type == TypeRawPtr::BOTTOM)) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
722 // Stored value escapes in unsafe access. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
723 Node *val = n->in(MemNode::ValueIn); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
724 PointsToNode* ptn = ptnode_adr(val->_idx); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
725 assert(ptn != NULL, "node should be registered"); |
17894
87b5e00100fe
8038048: assert(null_obj->escape_state() == PointsToNode::NoEscape,etc) runThese -full
kvn
parents:
14202
diff
changeset
|
726 set_escape_state(ptn, PointsToNode::GlobalEscape); |
5954
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
727 // Add edge to object for unsafe access with offset. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
728 PointsToNode* adr_ptn = ptnode_adr(adr->_idx); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
729 assert(adr_ptn != NULL, "node should be registered"); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
730 if (adr_ptn->is_Field()) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
731 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
|
732 add_edge(adr_ptn, ptn); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
733 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
734 break; |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
735 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
736 ELSE_FAIL("Op_StoreP"); |
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 case Op_AryEq: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
739 case Op_StrComp: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
740 case Op_StrEquals: |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
741 case Op_StrIndexOf: |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
742 case Op_EncodeISOArray: { |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
743 // 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
|
744 // 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
|
745 // 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
|
746 for (uint i = 2; i < n->req(); i++) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
747 Node* adr = n->in(i); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
748 const Type* at = _igvn->type(adr); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
749 if (!adr->is_top() && at->isa_ptr()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
750 assert(at == Type::TOP || at == TypePtr::NULL_PTR || |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
751 at->isa_ptr() != NULL, "expecting a pointer"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
752 if (adr->is_AddP()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
753 adr = get_addp_base(adr); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
754 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
755 PointsToNode* ptn = ptnode_adr(adr->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
756 assert(ptn != NULL, "node should be registered"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
757 add_edge(n_ptn, ptn); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
758 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
759 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
760 break; |
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 default: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
763 // 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
|
764 // miss some edges when they were created. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
765 #ifdef ASSERT |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
766 n->dump(1); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
767 #endif |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
768 guarantee(false, "unknown node"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
769 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
770 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
771 return; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
772 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
773 |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
774 void ConnectionGraph::add_call_node(CallNode* call) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
775 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
|
776 uint call_idx = call->_idx; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
777 if (call->is_Allocate()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
778 Node* k = call->in(AllocateNode::KlassNode); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
779 const TypeKlassPtr* kt = k->bottom_type()->isa_klassptr(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
780 assert(kt != NULL, "TypeKlassPtr required."); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
781 ciKlass* cik = kt->klass(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
782 PointsToNode::EscapeState es = PointsToNode::NoEscape; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
783 bool scalar_replaceable = true; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
784 if (call->is_AllocateArray()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
785 if (!cik->is_array_klass()) { // StressReflectiveCode |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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786 es = PointsToNode::GlobalEscape; |
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787 } else { |
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788 int length = call->in(AllocateNode::ALength)->find_int_con(-1); |
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789 if (length < 0 || length > EliminateAllocationArraySizeLimit) { |
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790 // Not scalar replaceable if the length is not constant or too big. |
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|
791 scalar_replaceable = false; |
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|
792 } |
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|
793 } |
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|
794 } else { // Allocate instance |
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|
795 if (cik->is_subclass_of(_compile->env()->Thread_klass()) || |
12871 | 796 cik->is_subclass_of(_compile->env()->Reference_klass()) || |
5948
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|
797 !cik->is_instance_klass() || // StressReflectiveCode |
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798 cik->as_instance_klass()->has_finalizer()) { |
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799 es = PointsToNode::GlobalEscape; |
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|
800 } |
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|
801 } |
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802 add_java_object(call, es); |
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803 PointsToNode* ptn = ptnode_adr(call_idx); |
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804 if (!scalar_replaceable && ptn->scalar_replaceable()) { |
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|
805 ptn->set_scalar_replaceable(false); |
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|
806 } |
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807 } else if (call->is_CallStaticJava()) { |
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|
808 // Call nodes could be different types: |
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|
809 // |
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810 // 1. CallDynamicJavaNode (what happened during call is unknown): |
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|
811 // |
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812 // - mapped to GlobalEscape JavaObject node if oop is returned; |
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|
813 // |
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814 // - all oop arguments are escaping globally; |
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815 // |
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816 // 2. CallStaticJavaNode (execute bytecode analysis if possible): |
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|
817 // |
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|
818 // - the same as CallDynamicJavaNode if can't do bytecode analysis; |
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|
819 // |
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|
820 // - mapped to GlobalEscape JavaObject node if unknown oop is returned; |
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|
821 // - mapped to NoEscape JavaObject node if non-escaping object allocated |
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|
822 // during call is returned; |
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823 // - mapped to ArgEscape LocalVar node pointed to object arguments |
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824 // which are returned and does not escape during call; |
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|
825 // |
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826 // - oop arguments escaping status is defined by bytecode analysis; |
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|
827 // |
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828 // For a static call, we know exactly what method is being called. |
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829 // Use bytecode estimator to record whether the call's return value escapes. |
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830 ciMethod* meth = call->as_CallJava()->method(); |
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831 if (meth == NULL) { |
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|
832 const char* name = call->as_CallStaticJava()->_name; |
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833 assert(strncmp(name, "_multianewarray", 15) == 0, "TODO: add failed case check"); |
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834 // Returns a newly allocated unescaped object. |
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835 add_java_object(call, PointsToNode::NoEscape); |
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|
836 ptnode_adr(call_idx)->set_scalar_replaceable(false); |
10278 | 837 } else if (meth->is_boxing_method()) { |
838 // Returns boxing object | |
10281
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8014286: failed java/lang/Math/DivModTests.java after 6934604 changes
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|
839 PointsToNode::EscapeState es; |
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8014286: failed java/lang/Math/DivModTests.java after 6934604 changes
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|
840 vmIntrinsics::ID intr = meth->intrinsic_id(); |
1da5d70655e9
8014286: failed java/lang/Math/DivModTests.java after 6934604 changes
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|
841 if (intr == vmIntrinsics::_floatValue || intr == vmIntrinsics::_doubleValue) { |
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8014286: failed java/lang/Math/DivModTests.java after 6934604 changes
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|
842 // It does not escape if object is always allocated. |
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8014286: failed java/lang/Math/DivModTests.java after 6934604 changes
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|
843 es = PointsToNode::NoEscape; |
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8014286: failed java/lang/Math/DivModTests.java after 6934604 changes
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|
844 } else { |
1da5d70655e9
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|
845 // It escapes globally if object could be loaded from cache. |
1da5d70655e9
8014286: failed java/lang/Math/DivModTests.java after 6934604 changes
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|
846 es = PointsToNode::GlobalEscape; |
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|
847 } |
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|
848 add_java_object(call, es); |
4122
cc81b9c09bbb
7112478: after 7105605 JRuby bench_define_method_methods.rb fails with NPE
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|
849 } else { |
5948
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|
850 BCEscapeAnalyzer* call_analyzer = meth->get_bcea(); |
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|
851 call_analyzer->copy_dependencies(_compile->dependencies()); |
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852 if (call_analyzer->is_return_allocated()) { |
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|
853 // Returns a newly allocated unescaped object, simply |
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|
854 // update dependency information. |
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855 // Mark it as NoEscape so that objects referenced by |
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856 // it's fields will be marked as NoEscape at least. |
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857 add_java_object(call, PointsToNode::NoEscape); |
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|
858 ptnode_adr(call_idx)->set_scalar_replaceable(false); |
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|
859 } else { |
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|
860 // Determine whether any arguments are returned. |
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|
861 const TypeTuple* d = call->tf()->domain(); |
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|
862 bool ret_arg = false; |
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863 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) { |
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864 if (d->field_at(i)->isa_ptr() != NULL && |
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865 call_analyzer->is_arg_returned(i - TypeFunc::Parms)) { |
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|
866 ret_arg = true; |
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|
867 break; |
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|
868 } |
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|
869 } |
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|
870 if (ret_arg) { |
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871 add_local_var(call, PointsToNode::ArgEscape); |
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872 } else { |
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|
873 // Returns unknown object. |
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874 map_ideal_node(call, phantom_obj); |
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|
875 } |
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|
876 } |
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|
877 } |
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878 } else { |
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|
879 // An other type of call, assume the worst case: |
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880 // returned value is unknown and globally escapes. |
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881 assert(call->Opcode() == Op_CallDynamicJava, "add failed case check"); |
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882 map_ideal_node(call, phantom_obj); |
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|
883 } |
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changeset
|
884 } |
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changeset
|
885 |
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886 void ConnectionGraph::process_call_arguments(CallNode *call) { |
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|
887 bool is_arraycopy = false; |
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|
888 switch (call->Opcode()) { |
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changeset
|
889 #ifdef ASSERT |
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|
890 case Op_Allocate: |
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|
891 case Op_AllocateArray: |
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|
892 case Op_Lock: |
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|
893 case Op_Unlock: |
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894 assert(false, "should be done already"); |
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changeset
|
895 break; |
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|
896 #endif |
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|
897 case Op_CallLeafNoFP: |
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898 is_arraycopy = (call->as_CallLeaf()->_name != NULL && |
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|
899 strstr(call->as_CallLeaf()->_name, "arraycopy") != 0); |
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|
900 // fall through |
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901 case Op_CallLeaf: { |
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902 // Stub calls, objects do not escape but they are not scale replaceable. |
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903 // Adjust escape state for outgoing arguments. |
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904 const TypeTuple * d = call->tf()->domain(); |
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905 bool src_has_oops = false; |
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906 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) { |
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907 const Type* at = d->field_at(i); |
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908 Node *arg = call->in(i); |
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changeset
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909 const Type *aat = _igvn->type(arg); |
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|
910 if (arg->is_top() || !at->isa_ptr() || !aat->isa_ptr()) |
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911 continue; |
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912 if (arg->is_AddP()) { |
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|
913 // |
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|
914 // The inline_native_clone() case when the arraycopy stub is called |
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915 // after the allocation before Initialize and CheckCastPP nodes. |
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916 // Or normal arraycopy for object arrays case. |
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917 // |
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918 // Set AddP's base (Allocate) as not scalar replaceable since |
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919 // pointer to the base (with offset) is passed as argument. |
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920 // |
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|
921 arg = get_addp_base(arg); |
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|
922 } |
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923 PointsToNode* arg_ptn = ptnode_adr(arg->_idx); |
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924 assert(arg_ptn != NULL, "should be registered"); |
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925 PointsToNode::EscapeState arg_esc = arg_ptn->escape_state(); |
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926 if (is_arraycopy || arg_esc < PointsToNode::ArgEscape) { |
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927 assert(aat == Type::TOP || aat == TypePtr::NULL_PTR || |
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928 aat->isa_ptr() != NULL, "expecting an Ptr"); |
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929 bool arg_has_oops = aat->isa_oopptr() && |
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930 (aat->isa_oopptr()->klass() == NULL || aat->isa_instptr() || |
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931 (aat->isa_aryptr() && aat->isa_aryptr()->klass()->is_obj_array_klass())); |
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932 if (i == TypeFunc::Parms) { |
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933 src_has_oops = arg_has_oops; |
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934 } |
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935 // |
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936 // src or dst could be j.l.Object when other is basic type array: |
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937 // |
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938 // arraycopy(char[],0,Object*,0,size); |
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939 // arraycopy(Object*,0,char[],0,size); |
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940 // |
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941 // Don't add edges in such cases. |
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942 // |
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943 bool arg_is_arraycopy_dest = src_has_oops && is_arraycopy && |
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944 arg_has_oops && (i > TypeFunc::Parms); |
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945 #ifdef ASSERT |
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946 if (!(is_arraycopy || |
6894 | 947 (call->as_CallLeaf()->_name != NULL && |
948 (strcmp(call->as_CallLeaf()->_name, "g1_wb_pre") == 0 || | |
949 strcmp(call->as_CallLeaf()->_name, "g1_wb_post") == 0 || | |
11080
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950 strcmp(call->as_CallLeaf()->_name, "updateBytesCRC32") == 0 || |
6894 | 951 strcmp(call->as_CallLeaf()->_name, "aescrypt_encryptBlock") == 0 || |
952 strcmp(call->as_CallLeaf()->_name, "aescrypt_decryptBlock") == 0 || | |
953 strcmp(call->as_CallLeaf()->_name, "cipherBlockChaining_encryptAESCrypt") == 0 || | |
20313
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954 strcmp(call->as_CallLeaf()->_name, "cipherBlockChaining_decryptAESCrypt") == 0 || |
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955 strcmp(call->as_CallLeaf()->_name, "sha1_implCompress") == 0 || |
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956 strcmp(call->as_CallLeaf()->_name, "sha1_implCompressMB") == 0 || |
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957 strcmp(call->as_CallLeaf()->_name, "sha256_implCompress") == 0 || |
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958 strcmp(call->as_CallLeaf()->_name, "sha256_implCompressMB") == 0 || |
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959 strcmp(call->as_CallLeaf()->_name, "sha512_implCompress") == 0 || |
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960 strcmp(call->as_CallLeaf()->_name, "sha512_implCompressMB") == 0 || |
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961 strcmp(call->as_CallLeaf()->_name, "multiplyToLen") == 0) |
6894 | 962 ))) { |
5948
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963 call->dump(); |
6894 | 964 fatal(err_msg_res("EA unexpected CallLeaf %s", call->as_CallLeaf()->_name)); |
5948
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|
965 } |
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|
966 #endif |
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967 // Always process arraycopy's destination object since |
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968 // we need to add all possible edges to references in |
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969 // source object. |
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970 if (arg_esc >= PointsToNode::ArgEscape && |
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971 !arg_is_arraycopy_dest) { |
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|
972 continue; |
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|
973 } |
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974 set_escape_state(arg_ptn, PointsToNode::ArgEscape); |
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975 if (arg_is_arraycopy_dest) { |
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|
976 Node* src = call->in(TypeFunc::Parms); |
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977 if (src->is_AddP()) { |
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978 src = get_addp_base(src); |
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979 } |
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980 PointsToNode* src_ptn = ptnode_adr(src->_idx); |
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981 assert(src_ptn != NULL, "should be registered"); |
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982 if (arg_ptn != src_ptn) { |
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983 // Special arraycopy edge: |
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984 // A destination object's field can't have the source object |
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985 // as base since objects escape states are not related. |
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986 // Only escape state of destination object's fields affects |
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987 // escape state of fields in source object. |
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988 add_arraycopy(call, PointsToNode::ArgEscape, src_ptn, arg_ptn); |
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989 } |
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990 } |
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|
991 } |
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|
992 } |
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993 break; |
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994 } |
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995 case Op_CallStaticJava: { |
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996 // For a static call, we know exactly what method is being called. |
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997 // Use bytecode estimator to record the call's escape affects |
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998 #ifdef ASSERT |
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999 const char* name = call->as_CallStaticJava()->_name; |
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1000 assert((name == NULL || strcmp(name, "uncommon_trap") != 0), "normal calls only"); |
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1001 #endif |
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1002 ciMethod* meth = call->as_CallJava()->method(); |
10278 | 1003 if ((meth != NULL) && meth->is_boxing_method()) { |
1004 break; // Boxing methods do not modify any oops. | |
1005 } | |
5948
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1006 BCEscapeAnalyzer* call_analyzer = (meth !=NULL) ? meth->get_bcea() : NULL; |
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1007 // fall-through if not a Java method or no analyzer information |
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1008 if (call_analyzer != NULL) { |
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1009 PointsToNode* call_ptn = ptnode_adr(call->_idx); |
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1010 const TypeTuple* d = call->tf()->domain(); |
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1011 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) { |
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1012 const Type* at = d->field_at(i); |
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1013 int k = i - TypeFunc::Parms; |
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1014 Node* arg = call->in(i); |
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1015 PointsToNode* arg_ptn = ptnode_adr(arg->_idx); |
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1016 if (at->isa_ptr() != NULL && |
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1017 call_analyzer->is_arg_returned(k)) { |
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1018 // The call returns arguments. |
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1019 if (call_ptn != NULL) { // Is call's result used? |
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1020 assert(call_ptn->is_LocalVar(), "node should be registered"); |
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1021 assert(arg_ptn != NULL, "node should be registered"); |
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1022 add_edge(call_ptn, arg_ptn); |
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1023 } |
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1024 } |
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1025 if (at->isa_oopptr() != NULL && |
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1026 arg_ptn->escape_state() < PointsToNode::GlobalEscape) { |
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1027 if (!call_analyzer->is_arg_stack(k)) { |
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1028 // The argument global escapes |
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1029 set_escape_state(arg_ptn, PointsToNode::GlobalEscape); |
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1030 } else { |
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1031 set_escape_state(arg_ptn, PointsToNode::ArgEscape); |
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1032 if (!call_analyzer->is_arg_local(k)) { |
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1033 // The argument itself doesn't escape, but any fields might |
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1034 set_fields_escape_state(arg_ptn, PointsToNode::GlobalEscape); |
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1035 } |
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|
1036 } |
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|
1037 } |
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|
1038 } |
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|
1039 if (call_ptn != NULL && call_ptn->is_LocalVar()) { |
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|
1040 // The call returns arguments. |
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|
1041 assert(call_ptn->edge_count() > 0, "sanity"); |
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1042 if (!call_analyzer->is_return_local()) { |
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|
1043 // Returns also unknown object. |
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|
1044 add_edge(call_ptn, phantom_obj); |
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|
1045 } |
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|
1046 } |
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|
1047 break; |
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|
1048 } |
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|
1049 } |
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|
1050 default: { |
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|
1051 // Fall-through here if not a Java method or no analyzer information |
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|
1052 // or some other type of call, assume the worst case: all arguments |
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|
1053 // globally escape. |
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|
1054 const TypeTuple* d = call->tf()->domain(); |
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1055 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) { |
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1056 const Type* at = d->field_at(i); |
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1057 if (at->isa_oopptr() != NULL) { |
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|
1058 Node* arg = call->in(i); |
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1059 if (arg->is_AddP()) { |
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1060 arg = get_addp_base(arg); |
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|
1061 } |
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|
1062 assert(ptnode_adr(arg->_idx) != NULL, "should be defined already"); |
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1063 set_escape_state(ptnode_adr(arg->_idx), PointsToNode::GlobalEscape); |
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|
1064 } |
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|
1065 } |
4122
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|
1066 } |
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|
1067 } |
5948
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|
1068 } |
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|
1069 |
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|
1070 |
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|
1071 // Finish Graph construction. |
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|
1072 bool ConnectionGraph::complete_connection_graph( |
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1073 GrowableArray<PointsToNode*>& ptnodes_worklist, |
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1074 GrowableArray<JavaObjectNode*>& non_escaped_worklist, |
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1075 GrowableArray<JavaObjectNode*>& java_objects_worklist, |
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|
1076 GrowableArray<FieldNode*>& oop_fields_worklist) { |
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1077 // Normally only 1-3 passes needed to build Connection Graph depending |
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1078 // on graph complexity. Observed 8 passes in jvm2008 compiler.compiler. |
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1079 // Set limit to 20 to catch situation when something did go wrong and |
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|
1080 // bailout Escape Analysis. |
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1081 // Also limit build time to 20 sec (60 in debug VM), EscapeAnalysisTimeout flag. |
5948
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1082 #define CG_BUILD_ITER_LIMIT 20 |
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|
1083 |
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|
1084 // Propagate GlobalEscape and ArgEscape escape states and check that |
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1085 // we still have non-escaping objects. The method pushs on _worklist |
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1086 // Field nodes which reference phantom_object. |
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1087 if (!find_non_escaped_objects(ptnodes_worklist, non_escaped_worklist)) { |
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|
1088 return false; // Nothing to do. |
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|
1089 } |
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|
1090 // Now propagate references to all JavaObject nodes. |
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|
1091 int java_objects_length = java_objects_worklist.length(); |
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|
1092 elapsedTimer time; |
20585
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|
1093 bool timeout = false; |
5948
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|
1094 int new_edges = 1; |
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|
1095 int iterations = 0; |
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|
1096 do { |
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|
1097 while ((new_edges > 0) && |
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1098 (iterations++ < CG_BUILD_ITER_LIMIT)) { |
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|
1099 double start_time = time.seconds(); |
5948
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1100 time.start(); |
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|
1101 new_edges = 0; |
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|
1102 // Propagate references to phantom_object for nodes pushed on _worklist |
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1103 // by find_non_escaped_objects() and find_field_value(). |
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1104 new_edges += add_java_object_edges(phantom_obj, false); |
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|
1105 for (int next = 0; next < java_objects_length; ++next) { |
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|
1106 JavaObjectNode* ptn = java_objects_worklist.at(next); |
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|
1107 new_edges += add_java_object_edges(ptn, true); |
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|
1108 |
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|
1109 #define SAMPLE_SIZE 4 |
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|
1110 if ((next % SAMPLE_SIZE) == 0) { |
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|
1111 // Each 4 iterations calculate how much time it will take |
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|
1112 // to complete graph construction. |
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|
1113 time.stop(); |
20688
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8066199: C2 escape analysis prevents VM from exiting quickly
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diff
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|
1114 // Poll for requests from shutdown mechanism to quiesce compiler |
f913964f3fde
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|
1115 // because Connection graph construction may take long time. |
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|
1116 CompileBroker::maybe_block(); |
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1117 double stop_time = time.seconds(); |
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|
1118 double time_per_iter = (stop_time - start_time) / (double)SAMPLE_SIZE; |
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1119 double time_until_end = time_per_iter * (double)(java_objects_length - next); |
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1120 if ((start_time + time_until_end) >= EscapeAnalysisTimeout) { |
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|
1121 timeout = true; |
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|
1122 break; // Timeout |
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|
1123 } |
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|
1124 start_time = stop_time; |
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|
1125 time.start(); |
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|
1126 } |
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|
1127 #undef SAMPLE_SIZE |
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|
1128 |
5948
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|
1129 } |
20585
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|
1130 if (timeout) break; |
5948
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1131 if (new_edges > 0) { |
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1132 // Update escape states on each iteration if graph was updated. |
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1133 if (!find_non_escaped_objects(ptnodes_worklist, non_escaped_worklist)) { |
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1134 return false; // Nothing to do. |
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|
1135 } |
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|
1136 } |
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|
1137 time.stop(); |
20585
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1138 if (time.seconds() >= EscapeAnalysisTimeout) { |
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|
1139 timeout = true; |
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|
1140 break; |
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|
1141 } |
5948
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|
1142 } |
20585
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|
1143 if ((iterations < CG_BUILD_ITER_LIMIT) && !timeout) { |
5948
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|
1144 time.start(); |
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|
1145 // Find fields which have unknown value. |
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1146 int fields_length = oop_fields_worklist.length(); |
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1147 for (int next = 0; next < fields_length; next++) { |
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1148 FieldNode* field = oop_fields_worklist.at(next); |
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|
1149 if (field->edge_count() == 0) { |
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1150 new_edges += find_field_value(field); |
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1151 // This code may added new edges to phantom_object. |
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1152 // Need an other cycle to propagate references to phantom_object. |
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|
1153 } |
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|
1154 } |
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|
1155 time.stop(); |
20585
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|
1156 if (time.seconds() >= EscapeAnalysisTimeout) { |
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|
1157 timeout = true; |
90297adbda9d
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|
1158 break; |
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|
1159 } |
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1160 } else { |
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1161 new_edges = 0; // Bailout |
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1162 } |
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1163 } while (new_edges > 0); |
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1164 |
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1165 // Bailout if passed limits. |
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1166 if ((iterations >= CG_BUILD_ITER_LIMIT) || timeout) { |
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1167 Compile* C = _compile; |
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1168 if (C->log() != NULL) { |
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1169 C->log()->begin_elem("connectionGraph_bailout reason='reached "); |
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1170 C->log()->text("%s", timeout ? "time" : "iterations"); |
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1171 C->log()->end_elem(" limit'"); |
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1172 } |
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1173 assert(ExitEscapeAnalysisOnTimeout, err_msg_res("infinite EA connection graph build (%f sec, %d iterations) with %d nodes and worklist size %d", |
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1174 time.seconds(), iterations, nodes_size(), ptnodes_worklist.length())); |
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1175 // Possible infinite build_connection_graph loop, |
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1176 // bailout (no changes to ideal graph were made). |
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1177 return false; |
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1178 } |
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1179 #ifdef ASSERT |
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1180 if (Verbose && PrintEscapeAnalysis) { |
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1181 tty->print_cr("EA: %d iterations to build connection graph with %d nodes and worklist size %d", |
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1182 iterations, nodes_size(), ptnodes_worklist.length()); |
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1183 } |
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1184 #endif |
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1185 |
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1186 #undef CG_BUILD_ITER_LIMIT |
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1187 |
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1188 // Find fields initialized by NULL for non-escaping Allocations. |
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1189 int non_escaped_length = non_escaped_worklist.length(); |
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1190 for (int next = 0; next < non_escaped_length; next++) { |
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1191 JavaObjectNode* ptn = non_escaped_worklist.at(next); |
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1192 PointsToNode::EscapeState es = ptn->escape_state(); |
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1193 assert(es <= PointsToNode::ArgEscape, "sanity"); |
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1194 if (es == PointsToNode::NoEscape) { |
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1195 if (find_init_values(ptn, null_obj, _igvn) > 0) { |
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1196 // Adding references to NULL object does not change escape states |
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1197 // since it does not escape. Also no fields are added to NULL object. |
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1198 add_java_object_edges(null_obj, false); |
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1199 } |
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1200 } |
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1201 Node* n = ptn->ideal_node(); |
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1202 if (n->is_Allocate()) { |
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1203 // The object allocated by this Allocate node will never be |
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1204 // seen by an other thread. Mark it so that when it is |
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1205 // expanded no MemBarStoreStore is added. |
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1206 InitializeNode* ini = n->as_Allocate()->initialization(); |
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1207 if (ini != NULL) |
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1208 ini->set_does_not_escape(); |
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1209 } |
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1210 } |
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1211 return true; // Finished graph construction. |
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1212 } |
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1213 |
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1214 // Propagate GlobalEscape and ArgEscape escape states to all nodes |
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1215 // and check that we still have non-escaping java objects. |
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1216 bool ConnectionGraph::find_non_escaped_objects(GrowableArray<PointsToNode*>& ptnodes_worklist, |
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1217 GrowableArray<JavaObjectNode*>& non_escaped_worklist) { |
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1218 GrowableArray<PointsToNode*> escape_worklist; |
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1219 // First, put all nodes with GlobalEscape and ArgEscape states on worklist. |
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1220 int ptnodes_length = ptnodes_worklist.length(); |
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1221 for (int next = 0; next < ptnodes_length; ++next) { |
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1222 PointsToNode* ptn = ptnodes_worklist.at(next); |
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1223 if (ptn->escape_state() >= PointsToNode::ArgEscape || |
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1224 ptn->fields_escape_state() >= PointsToNode::ArgEscape) { |
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1225 escape_worklist.push(ptn); |
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1226 } |
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1227 } |
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1228 // Set escape states to referenced nodes (edges list). |
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1229 while (escape_worklist.length() > 0) { |
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1230 PointsToNode* ptn = escape_worklist.pop(); |
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1231 PointsToNode::EscapeState es = ptn->escape_state(); |
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1232 PointsToNode::EscapeState field_es = ptn->fields_escape_state(); |
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1233 if (ptn->is_Field() && ptn->as_Field()->is_oop() && |
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1234 es >= PointsToNode::ArgEscape) { |
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1235 // GlobalEscape or ArgEscape state of field means it has unknown value. |
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1236 if (add_edge(ptn, phantom_obj)) { |
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1237 // New edge was added |
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1238 add_field_uses_to_worklist(ptn->as_Field()); |
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1239 } |
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1240 } |
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1241 for (EdgeIterator i(ptn); i.has_next(); i.next()) { |
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1242 PointsToNode* e = i.get(); |
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1243 if (e->is_Arraycopy()) { |
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1244 assert(ptn->arraycopy_dst(), "sanity"); |
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1245 // Propagate only fields escape state through arraycopy edge. |
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1246 if (e->fields_escape_state() < field_es) { |
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1247 set_fields_escape_state(e, field_es); |
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1248 escape_worklist.push(e); |
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1249 } |
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1250 } else if (es >= field_es) { |
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1251 // fields_escape_state is also set to 'es' if it is less than 'es'. |
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1252 if (e->escape_state() < es) { |
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1253 set_escape_state(e, es); |
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1254 escape_worklist.push(e); |
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1255 } |
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1256 } else { |
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1257 // Propagate field escape state. |
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1258 bool es_changed = false; |
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1259 if (e->fields_escape_state() < field_es) { |
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1260 set_fields_escape_state(e, field_es); |
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1261 es_changed = true; |
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1262 } |
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1263 if ((e->escape_state() < field_es) && |
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1264 e->is_Field() && ptn->is_JavaObject() && |
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1265 e->as_Field()->is_oop()) { |
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1266 // Change escape state of referenced fileds. |
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1267 set_escape_state(e, field_es); |
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1268 es_changed = true;; |
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1269 } else if (e->escape_state() < es) { |
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1270 set_escape_state(e, es); |
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1271 es_changed = true;; |
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1272 } |
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1273 if (es_changed) { |
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1274 escape_worklist.push(e); |
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1275 } |
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1276 } |
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1277 } |
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1278 } |
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1279 // Remove escaped objects from non_escaped list. |
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1280 for (int next = non_escaped_worklist.length()-1; next >= 0 ; --next) { |
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1281 JavaObjectNode* ptn = non_escaped_worklist.at(next); |
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1282 if (ptn->escape_state() >= PointsToNode::GlobalEscape) { |
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1283 non_escaped_worklist.delete_at(next); |
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1284 } |
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1285 if (ptn->escape_state() == PointsToNode::NoEscape) { |
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1286 // Find fields in non-escaped allocations which have unknown value. |
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1287 find_init_values(ptn, phantom_obj, NULL); |
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1288 } |
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1289 } |
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1290 return (non_escaped_worklist.length() > 0); |
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1291 } |
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1292 |
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1293 // Add all references to JavaObject node by walking over all uses. |
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1294 int ConnectionGraph::add_java_object_edges(JavaObjectNode* jobj, bool populate_worklist) { |
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1295 int new_edges = 0; |
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1296 if (populate_worklist) { |
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1297 // Populate _worklist by uses of jobj's uses. |
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1298 for (UseIterator i(jobj); i.has_next(); i.next()) { |
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1299 PointsToNode* use = i.get(); |
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1300 if (use->is_Arraycopy()) |
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1301 continue; |
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1302 add_uses_to_worklist(use); |
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1303 if (use->is_Field() && use->as_Field()->is_oop()) { |
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1304 // Put on worklist all field's uses (loads) and |
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1305 // related field nodes (same base and offset). |
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1306 add_field_uses_to_worklist(use->as_Field()); |
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1307 } |
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1308 } |
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1309 } |
20585
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1310 for (int l = 0; l < _worklist.length(); l++) { |
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1311 PointsToNode* use = _worklist.at(l); |
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1312 if (PointsToNode::is_base_use(use)) { |
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1313 // Add reference from jobj to field and from field to jobj (field's base). |
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1314 use = PointsToNode::get_use_node(use)->as_Field(); |
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1315 if (add_base(use->as_Field(), jobj)) { |
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1316 new_edges++; |
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1317 } |
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1318 continue; |
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1319 } |
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1320 assert(!use->is_JavaObject(), "sanity"); |
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1321 if (use->is_Arraycopy()) { |
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1322 if (jobj == null_obj) // NULL object does not have field edges |
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1323 continue; |
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1324 // Added edge from Arraycopy node to arraycopy's source java object |
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1325 if (add_edge(use, jobj)) { |
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1326 jobj->set_arraycopy_src(); |
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1327 new_edges++; |
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1328 } |
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1329 // and stop here. |
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1330 continue; |
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1331 } |
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1332 if (!add_edge(use, jobj)) |
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1333 continue; // No new edge added, there was such edge already. |
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1334 new_edges++; |
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1335 if (use->is_LocalVar()) { |
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1336 add_uses_to_worklist(use); |
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1337 if (use->arraycopy_dst()) { |
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1338 for (EdgeIterator i(use); i.has_next(); i.next()) { |
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1339 PointsToNode* e = i.get(); |
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1340 if (e->is_Arraycopy()) { |
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1341 if (jobj == null_obj) // NULL object does not have field edges |
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1342 continue; |
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1343 // Add edge from arraycopy's destination java object to Arraycopy node. |
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1344 if (add_edge(jobj, e)) { |
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1345 new_edges++; |
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1346 jobj->set_arraycopy_dst(); |
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1347 } |
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1348 } |
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1349 } |
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1350 } |
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1351 } else { |
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1352 // Added new edge to stored in field values. |
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1353 // Put on worklist all field's uses (loads) and |
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1354 // related field nodes (same base and offset). |
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1355 add_field_uses_to_worklist(use->as_Field()); |
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1356 } |
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1357 } |
20585
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1358 _worklist.clear(); |
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1359 _in_worklist.Reset(); |
5948
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1360 return new_edges; |
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1361 } |
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1362 |
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1363 // Put on worklist all related field nodes. |
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1364 void ConnectionGraph::add_field_uses_to_worklist(FieldNode* field) { |
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1365 assert(field->is_oop(), "sanity"); |
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1366 int offset = field->offset(); |
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1367 add_uses_to_worklist(field); |
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1368 // Loop over all bases of this field and push on worklist Field nodes |
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1369 // with the same offset and base (since they may reference the same field). |
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1370 for (BaseIterator i(field); i.has_next(); i.next()) { |
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1371 PointsToNode* base = i.get(); |
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1372 add_fields_to_worklist(field, base); |
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1373 // Check if the base was source object of arraycopy and go over arraycopy's |
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1374 // destination objects since values stored to a field of source object are |
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1375 // accessable by uses (loads) of fields of destination objects. |
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1376 if (base->arraycopy_src()) { |
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1377 for (UseIterator j(base); j.has_next(); j.next()) { |
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1378 PointsToNode* arycp = j.get(); |
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1379 if (arycp->is_Arraycopy()) { |
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1380 for (UseIterator k(arycp); k.has_next(); k.next()) { |
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1381 PointsToNode* abase = k.get(); |
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1382 if (abase->arraycopy_dst() && abase != base) { |
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1383 // Look for the same arracopy reference. |
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1384 add_fields_to_worklist(field, abase); |
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1385 } |
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1386 } |
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1387 } |
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1388 } |
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1389 } |
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1390 } |
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1391 } |
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1392 |
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1393 // Put on worklist all related field nodes. |
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1394 void ConnectionGraph::add_fields_to_worklist(FieldNode* field, PointsToNode* base) { |
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1395 int offset = field->offset(); |
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1396 if (base->is_LocalVar()) { |
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1397 for (UseIterator j(base); j.has_next(); j.next()) { |
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1398 PointsToNode* f = j.get(); |
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1399 if (PointsToNode::is_base_use(f)) { // Field |
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1400 f = PointsToNode::get_use_node(f); |
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1401 if (f == field || !f->as_Field()->is_oop()) |
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|
1402 continue; |
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1403 int offs = f->as_Field()->offset(); |
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1404 if (offs == offset || offset == Type::OffsetBot || offs == Type::OffsetBot) { |
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1405 add_to_worklist(f); |
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1406 } |
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1407 } |
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1408 } |
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1409 } else { |
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1410 assert(base->is_JavaObject(), "sanity"); |
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1411 if (// Skip phantom_object since it is only used to indicate that |
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1412 // this field's content globally escapes. |
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1413 (base != phantom_obj) && |
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1414 // NULL object node does not have fields. |
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1415 (base != null_obj)) { |
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1416 for (EdgeIterator i(base); i.has_next(); i.next()) { |
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1417 PointsToNode* f = i.get(); |
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1418 // Skip arraycopy edge since store to destination object field |
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1419 // does not update value in source object field. |
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1420 if (f->is_Arraycopy()) { |
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1421 assert(base->arraycopy_dst(), "sanity"); |
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1422 continue; |
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1423 } |
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1424 if (f == field || !f->as_Field()->is_oop()) |
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1425 continue; |
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1426 int offs = f->as_Field()->offset(); |
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1427 if (offs == offset || offset == Type::OffsetBot || offs == Type::OffsetBot) { |
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1428 add_to_worklist(f); |
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|
1429 } |
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1430 } |
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1431 } |
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|
1432 } |
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1433 } |
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|
1434 |
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1435 // Find fields which have unknown value. |
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|
1436 int ConnectionGraph::find_field_value(FieldNode* field) { |
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1437 // Escaped fields should have init value already. |
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1438 assert(field->escape_state() == PointsToNode::NoEscape, "sanity"); |
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1439 int new_edges = 0; |
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1440 for (BaseIterator i(field); i.has_next(); i.next()) { |
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|
1441 PointsToNode* base = i.get(); |
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1442 if (base->is_JavaObject()) { |
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1443 // Skip Allocate's fields which will be processed later. |
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1444 if (base->ideal_node()->is_Allocate()) |
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1445 return 0; |
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1446 assert(base == null_obj, "only NULL ptr base expected here"); |
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1447 } |
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1448 } |
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1449 if (add_edge(field, phantom_obj)) { |
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1450 // New edge was added |
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1451 new_edges++; |
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1452 add_field_uses_to_worklist(field); |
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1453 } |
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1454 return new_edges; |
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1455 } |
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1456 |
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1457 // Find fields initializing values for allocations. |
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1458 int ConnectionGraph::find_init_values(JavaObjectNode* pta, PointsToNode* init_val, PhaseTransform* phase) { |
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1459 assert(pta->escape_state() == PointsToNode::NoEscape, "Not escaped Allocate nodes only"); |
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1460 int new_edges = 0; |
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1461 Node* alloc = pta->ideal_node(); |
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1462 if (init_val == phantom_obj) { |
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1463 // Do nothing for Allocate nodes since its fields values are "known". |
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1464 if (alloc->is_Allocate()) |
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1465 return 0; |
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1466 assert(alloc->as_CallStaticJava(), "sanity"); |
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1467 #ifdef ASSERT |
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1468 if (alloc->as_CallStaticJava()->method() == NULL) { |
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1469 const char* name = alloc->as_CallStaticJava()->_name; |
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1470 assert(strncmp(name, "_multianewarray", 15) == 0, "sanity"); |
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1471 } |
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1472 #endif |
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1473 // Non-escaped allocation returned from Java or runtime call have |
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1474 // unknown values in fields. |
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1475 for (EdgeIterator i(pta); i.has_next(); i.next()) { |
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1476 PointsToNode* field = i.get(); |
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1477 if (field->is_Field() && field->as_Field()->is_oop()) { |
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1478 if (add_edge(field, phantom_obj)) { |
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1479 // New edge was added |
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1480 new_edges++; |
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1481 add_field_uses_to_worklist(field->as_Field()); |
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1482 } |
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1483 } |
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1484 } |
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1485 return new_edges; |
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1486 } |
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1487 assert(init_val == null_obj, "sanity"); |
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1488 // Do nothing for Call nodes since its fields values are unknown. |
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1489 if (!alloc->is_Allocate()) |
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1490 return 0; |
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1491 |
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1492 InitializeNode* ini = alloc->as_Allocate()->initialization(); |
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1493 Compile* C = _compile; |
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1494 bool visited_bottom_offset = false; |
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1495 GrowableArray<int> offsets_worklist; |
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1496 |
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1497 // Check if an oop field's initializing value is recorded and add |
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1498 // a corresponding NULL if field's value if it is not recorded. |
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1499 // Connection Graph does not record a default initialization by NULL |
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1500 // captured by Initialize node. |
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1501 // |
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1502 for (EdgeIterator i(pta); i.has_next(); i.next()) { |
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1503 PointsToNode* field = i.get(); // Field (AddP) |
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1504 if (!field->is_Field() || !field->as_Field()->is_oop()) |
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1505 continue; // Not oop field |
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1506 int offset = field->as_Field()->offset(); |
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1507 if (offset == Type::OffsetBot) { |
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1508 if (!visited_bottom_offset) { |
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1509 // OffsetBot is used to reference array's element, |
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1510 // always add reference to NULL to all Field nodes since we don't |
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1511 // known which element is referenced. |
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1512 if (add_edge(field, null_obj)) { |
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1513 // New edge was added |
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1514 new_edges++; |
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1515 add_field_uses_to_worklist(field->as_Field()); |
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1516 visited_bottom_offset = true; |
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1517 } |
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1518 } |
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1519 } else { |
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1520 // Check only oop fields. |
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1521 const Type* adr_type = field->ideal_node()->as_AddP()->bottom_type(); |
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1522 if (adr_type->isa_rawptr()) { |
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1523 #ifdef ASSERT |
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|
1524 // Raw pointers are used for initializing stores so skip it |
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|
1525 // since it should be recorded already |
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|
1526 Node* base = get_addp_base(field->ideal_node()); |
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1527 assert(adr_type->isa_rawptr() && base->is_Proj() && |
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|
1528 (base->in(0) == alloc),"unexpected pointer type"); |
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|
1529 #endif |
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|
1530 continue; |
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|
1531 } |
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|
1532 if (!offsets_worklist.contains(offset)) { |
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|
1533 offsets_worklist.append(offset); |
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|
1534 Node* value = NULL; |
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|
1535 if (ini != NULL) { |
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|
1536 // StoreP::memory_type() == T_ADDRESS |
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|
1537 BasicType ft = UseCompressedOops ? T_NARROWOOP : T_ADDRESS; |
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|
1538 Node* store = ini->find_captured_store(offset, type2aelembytes(ft, true), phase); |
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|
1539 // Make sure initializing store has the same type as this AddP. |
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1540 // This AddP may reference non existing field because it is on a |
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|
1541 // dead branch of bimorphic call which is not eliminated yet. |
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|
1542 if (store != NULL && store->is_Store() && |
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|
1543 store->as_Store()->memory_type() == ft) { |
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|
1544 value = store->in(MemNode::ValueIn); |
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|
1545 #ifdef ASSERT |
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|
1546 if (VerifyConnectionGraph) { |
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|
1547 // Verify that AddP already points to all objects the value points to. |
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|
1548 PointsToNode* val = ptnode_adr(value->_idx); |
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|
1549 assert((val != NULL), "should be processed already"); |
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|
1550 PointsToNode* missed_obj = NULL; |
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|
1551 if (val->is_JavaObject()) { |
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|
1552 if (!field->points_to(val->as_JavaObject())) { |
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|
1553 missed_obj = val; |
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|
1554 } |
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|
1555 } else { |
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|
1556 if (!val->is_LocalVar() || (val->edge_count() == 0)) { |
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|
1557 tty->print_cr("----------init store has invalid value -----"); |
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|
1558 store->dump(); |
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|
1559 val->dump(); |
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|
1560 assert(val->is_LocalVar() && (val->edge_count() > 0), "should be processed already"); |
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|
1561 } |
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|
1562 for (EdgeIterator j(val); j.has_next(); j.next()) { |
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|
1563 PointsToNode* obj = j.get(); |
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|
1564 if (obj->is_JavaObject()) { |
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|
1565 if (!field->points_to(obj->as_JavaObject())) { |
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|
1566 missed_obj = obj; |
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|
1567 break; |
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|
1568 } |
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|
1569 } |
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|
1570 } |
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|
1571 } |
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|
1572 if (missed_obj != NULL) { |
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|
1573 tty->print_cr("----------field---------------------------------"); |
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|
1574 field->dump(); |
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|
1575 tty->print_cr("----------missed referernce to object-----------"); |
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|
1576 missed_obj->dump(); |
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|
1577 tty->print_cr("----------object referernced by init store -----"); |
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|
1578 store->dump(); |
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|
1579 val->dump(); |
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|
1580 assert(!field->points_to(missed_obj->as_JavaObject()), "missed JavaObject reference"); |
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|
1581 } |
f3da5ff1514c
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|
1582 } |
f3da5ff1514c
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|
1583 #endif |
5948
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|
1584 } else { |
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|
1585 // There could be initializing stores which follow allocation. |
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|
1586 // For example, a volatile field store is not collected |
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|
1587 // by Initialize node. |
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|
1588 // |
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|
1589 // Need to check for dependent loads to separate such stores from |
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|
1590 // stores which follow loads. For now, add initial value NULL so |
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|
1591 // that compare pointers optimization works correctly. |
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|
1592 } |
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|
1593 } |
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|
1594 if (value == NULL) { |
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|
1595 // A field's initializing value was not recorded. Add NULL. |
6944
f3da5ff1514c
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|
1596 if (add_edge(field, null_obj)) { |
5948
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|
1597 // New edge was added |
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|
1598 new_edges++; |
6944
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|
1599 add_field_uses_to_worklist(field->as_Field()); |
5948
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|
1600 } |
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|
1601 } |
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|
1602 } |
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|
1603 } |
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|
1604 } |
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|
1605 return new_edges; |
0 | 1606 } |
1607 | |
5948
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|
1608 // Adjust scalar_replaceable state after Connection Graph is built. |
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|
1609 void ConnectionGraph::adjust_scalar_replaceable_state(JavaObjectNode* jobj) { |
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|
1610 // Search for non-escaping objects which are not scalar replaceable |
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|
1611 // and mark them to propagate the state to referenced objects. |
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|
1612 |
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|
1613 // 1. An object is not scalar replaceable if the field into which it is |
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|
1614 // stored has unknown offset (stored into unknown element of an array). |
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|
1615 // |
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|
1616 for (UseIterator i(jobj); i.has_next(); i.next()) { |
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|
1617 PointsToNode* use = i.get(); |
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|
1618 assert(!use->is_Arraycopy(), "sanity"); |
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1619 if (use->is_Field()) { |
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|
1620 FieldNode* field = use->as_Field(); |
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|
1621 assert(field->is_oop() && field->scalar_replaceable() && |
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|
1622 field->fields_escape_state() == PointsToNode::NoEscape, "sanity"); |
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1623 if (field->offset() == Type::OffsetBot) { |
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|
1624 jobj->set_scalar_replaceable(false); |
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|
1625 return; |
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|
1626 } |
14202
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|
1627 // 2. An object is not scalar replaceable if the field into which it is |
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1628 // stored has multiple bases one of which is null. |
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|
1629 if (field->base_count() > 1) { |
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|
1630 for (BaseIterator i(field); i.has_next(); i.next()) { |
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|
1631 PointsToNode* base = i.get(); |
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|
1632 if (base == null_obj) { |
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|
1633 jobj->set_scalar_replaceable(false); |
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|
1634 return; |
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|
1635 } |
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|
1636 } |
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|
1637 } |
5948
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|
1638 } |
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|
1639 assert(use->is_Field() || use->is_LocalVar(), "sanity"); |
14202
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|
1640 // 3. An object is not scalar replaceable if it is merged with other objects. |
5948
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|
1641 for (EdgeIterator j(use); j.has_next(); j.next()) { |
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|
1642 PointsToNode* ptn = j.get(); |
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1643 if (ptn->is_JavaObject() && ptn != jobj) { |
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1644 // Mark all objects. |
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1645 jobj->set_scalar_replaceable(false); |
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1646 ptn->set_scalar_replaceable(false); |
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|
1647 } |
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|
1648 } |
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1649 if (!jobj->scalar_replaceable()) { |
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|
1650 return; |
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|
1651 } |
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|
1652 } |
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|
1653 |
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|
1654 for (EdgeIterator j(jobj); j.has_next(); j.next()) { |
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|
1655 // Non-escaping object node should point only to field nodes. |
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1656 FieldNode* field = j.get()->as_Field(); |
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1657 int offset = field->as_Field()->offset(); |
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|
1658 |
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1659 // 4. An object is not scalar replaceable if it has a field with unknown |
5948
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1660 // offset (array's element is accessed in loop). |
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1661 if (offset == Type::OffsetBot) { |
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1662 jobj->set_scalar_replaceable(false); |
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1663 return; |
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|
1664 } |
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1665 // 5. Currently an object is not scalar replaceable if a LoadStore node |
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1666 // access its field since the field value is unknown after it. |
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1667 // |
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1668 Node* n = field->ideal_node(); |
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1669 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
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1670 if (n->fast_out(i)->is_LoadStore()) { |
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1671 jobj->set_scalar_replaceable(false); |
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1672 return; |
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|
1673 } |
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|
1674 } |
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|
1675 |
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1676 // 6. Or the address may point to more then one object. This may produce |
5948
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1677 // the false positive result (set not scalar replaceable) |
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1678 // since the flow-insensitive escape analysis can't separate |
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1679 // the case when stores overwrite the field's value from the case |
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1680 // when stores happened on different control branches. |
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|
1681 // |
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1682 // Note: it will disable scalar replacement in some cases: |
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|
1683 // |
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|
1684 // Point p[] = new Point[1]; |
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1685 // p[0] = new Point(); // Will be not scalar replaced |
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1686 // |
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1687 // but it will save us from incorrect optimizations in next cases: |
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|
1688 // |
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|
1689 // Point p[] = new Point[1]; |
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1690 // if ( x ) p[0] = new Point(); // Will be not scalar replaced |
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|
1691 // |
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|
1692 if (field->base_count() > 1) { |
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|
1693 for (BaseIterator i(field); i.has_next(); i.next()) { |
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|
1694 PointsToNode* base = i.get(); |
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|
1695 // Don't take into account LocalVar nodes which |
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|
1696 // may point to only one object which should be also |
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|
1697 // this field's base by now. |
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|
1698 if (base->is_JavaObject() && base != jobj) { |
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|
1699 // Mark all bases. |
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|
1700 jobj->set_scalar_replaceable(false); |
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|
1701 base->set_scalar_replaceable(false); |
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|
1702 } |
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|
1703 } |
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|
1704 } |
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|
1705 } |
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|
1706 } |
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|
1707 |
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|
1708 #ifdef ASSERT |
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|
1709 void ConnectionGraph::verify_connection_graph( |
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|
1710 GrowableArray<PointsToNode*>& ptnodes_worklist, |
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|
1711 GrowableArray<JavaObjectNode*>& non_escaped_worklist, |
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|
1712 GrowableArray<JavaObjectNode*>& java_objects_worklist, |
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|
1713 GrowableArray<Node*>& addp_worklist) { |
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|
1714 // Verify that graph is complete - no new edges could be added. |
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|
1715 int java_objects_length = java_objects_worklist.length(); |
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|
1716 int non_escaped_length = non_escaped_worklist.length(); |
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|
1717 int new_edges = 0; |
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|
1718 for (int next = 0; next < java_objects_length; ++next) { |
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|
1719 JavaObjectNode* ptn = java_objects_worklist.at(next); |
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|
1720 new_edges += add_java_object_edges(ptn, true); |
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|
1721 } |
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|
1722 assert(new_edges == 0, "graph was not complete"); |
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|
1723 // Verify that escape state is final. |
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|
1724 int length = non_escaped_worklist.length(); |
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|
1725 find_non_escaped_objects(ptnodes_worklist, non_escaped_worklist); |
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|
1726 assert((non_escaped_length == non_escaped_worklist.length()) && |
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1727 (non_escaped_length == length) && |
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|
1728 (_worklist.length() == 0), "escape state was not final"); |
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|
1729 |
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|
1730 // Verify fields information. |
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|
1731 int addp_length = addp_worklist.length(); |
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1732 for (int next = 0; next < addp_length; ++next ) { |
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|
1733 Node* n = addp_worklist.at(next); |
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|
1734 FieldNode* field = ptnode_adr(n->_idx)->as_Field(); |
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|
1735 if (field->is_oop()) { |
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|
1736 // Verify that field has all bases |
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|
1737 Node* base = get_addp_base(n); |
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|
1738 PointsToNode* ptn = ptnode_adr(base->_idx); |
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|
1739 if (ptn->is_JavaObject()) { |
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|
1740 assert(field->has_base(ptn->as_JavaObject()), "sanity"); |
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|
1741 } else { |
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|
1742 assert(ptn->is_LocalVar(), "sanity"); |
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|
1743 for (EdgeIterator i(ptn); i.has_next(); i.next()) { |
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|
1744 PointsToNode* e = i.get(); |
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|
1745 if (e->is_JavaObject()) { |
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|
1746 assert(field->has_base(e->as_JavaObject()), "sanity"); |
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|
1747 } |
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|
1748 } |
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|
1749 } |
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|
1750 // Verify that all fields have initializing values. |
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|
1751 if (field->edge_count() == 0) { |
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|
1752 tty->print_cr("----------field does not have references----------"); |
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|
1753 field->dump(); |
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|
1754 for (BaseIterator i(field); i.has_next(); i.next()) { |
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|
1755 PointsToNode* base = i.get(); |
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|
1756 tty->print_cr("----------field has next base---------------------"); |
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|
1757 base->dump(); |
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|
1758 if (base->is_JavaObject() && (base != phantom_obj) && (base != null_obj)) { |
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|
1759 tty->print_cr("----------base has fields-------------------------"); |
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|
1760 for (EdgeIterator j(base); j.has_next(); j.next()) { |
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|
1761 j.get()->dump(); |
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1762 } |
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1763 tty->print_cr("----------base has references---------------------"); |
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1764 for (UseIterator j(base); j.has_next(); j.next()) { |
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1765 j.get()->dump(); |
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1766 } |
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1767 } |
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1768 } |
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1769 for (UseIterator i(field); i.has_next(); i.next()) { |
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1770 i.get()->dump(); |
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1771 } |
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1772 assert(field->edge_count() > 0, "sanity"); |
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1773 } |
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1774 } |
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1775 } |
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1776 } |
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1777 #endif |
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1778 |
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1779 // Optimize ideal graph. |
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1780 void ConnectionGraph::optimize_ideal_graph(GrowableArray<Node*>& ptr_cmp_worklist, |
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1781 GrowableArray<Node*>& storestore_worklist) { |
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1782 Compile* C = _compile; |
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1783 PhaseIterGVN* igvn = _igvn; |
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1784 if (EliminateLocks) { |
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1785 // Mark locks before changing ideal graph. |
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1786 int cnt = C->macro_count(); |
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1787 for( int i=0; i < cnt; i++ ) { |
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1788 Node *n = C->macro_node(i); |
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1789 if (n->is_AbstractLock()) { // Lock and Unlock nodes |
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1790 AbstractLockNode* alock = n->as_AbstractLock(); |
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1791 if (!alock->is_non_esc_obj()) { |
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1792 if (not_global_escape(alock->obj_node())) { |
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1793 assert(!alock->is_eliminated() || alock->is_coarsened(), "sanity"); |
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1794 // The lock could be marked eliminated by lock coarsening |
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1795 // code during first IGVN before EA. Replace coarsened flag |
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1796 // to eliminate all associated locks/unlocks. |
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1797 #ifdef ASSERT |
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1798 alock->log_lock_optimization(C, "eliminate_lock_set_non_esc3"); |
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1799 #endif |
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1800 alock->set_non_esc_obj(); |
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1801 } |
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1802 } |
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1803 } |
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1804 } |
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1805 } |
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1806 |
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1807 if (OptimizePtrCompare) { |
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1808 // Add ConI(#CC_GT) and ConI(#CC_EQ). |
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1809 _pcmp_neq = igvn->makecon(TypeInt::CC_GT); |
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1810 _pcmp_eq = igvn->makecon(TypeInt::CC_EQ); |
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1811 // Optimize objects compare. |
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1812 while (ptr_cmp_worklist.length() != 0) { |
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1813 Node *n = ptr_cmp_worklist.pop(); |
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1814 Node *res = optimize_ptr_compare(n); |
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1815 if (res != NULL) { |
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1816 #ifndef PRODUCT |
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1817 if (PrintOptimizePtrCompare) { |
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1818 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")); |
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1819 if (Verbose) { |
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1820 n->dump(1); |
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1821 } |
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1822 } |
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1823 #endif |
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1824 igvn->replace_node(n, res); |
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1825 } |
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1826 } |
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1827 // cleanup |
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1828 if (_pcmp_neq->outcnt() == 0) |
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1829 igvn->hash_delete(_pcmp_neq); |
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1830 if (_pcmp_eq->outcnt() == 0) |
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1831 igvn->hash_delete(_pcmp_eq); |
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1832 } |
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1833 |
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1834 // For MemBarStoreStore nodes added in library_call.cpp, check |
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1835 // escape status of associated AllocateNode and optimize out |
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1836 // MemBarStoreStore node if the allocated object never escapes. |
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1837 while (storestore_worklist.length() != 0) { |
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1838 Node *n = storestore_worklist.pop(); |
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1839 MemBarStoreStoreNode *storestore = n ->as_MemBarStoreStore(); |
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1840 Node *alloc = storestore->in(MemBarNode::Precedent)->in(0); |
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1841 assert (alloc->is_Allocate(), "storestore should point to AllocateNode"); |
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1842 if (not_global_escape(alloc)) { |
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1843 MemBarNode* mb = MemBarNode::make(C, Op_MemBarCPUOrder, Compile::AliasIdxBot); |
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1844 mb->init_req(TypeFunc::Memory, storestore->in(TypeFunc::Memory)); |
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1845 mb->init_req(TypeFunc::Control, storestore->in(TypeFunc::Control)); |
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1846 igvn->register_new_node_with_optimizer(mb); |
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1847 igvn->replace_node(storestore, mb); |
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1848 } |
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1849 } |
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1850 } |
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1851 |
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1852 // Optimize objects compare. |
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1853 Node* ConnectionGraph::optimize_ptr_compare(Node* n) { |
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1854 assert(OptimizePtrCompare, "sanity"); |
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1855 PointsToNode* ptn1 = ptnode_adr(n->in(1)->_idx); |
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1856 PointsToNode* ptn2 = ptnode_adr(n->in(2)->_idx); |
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1857 JavaObjectNode* jobj1 = unique_java_object(n->in(1)); |
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1858 JavaObjectNode* jobj2 = unique_java_object(n->in(2)); |
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1859 assert(ptn1->is_JavaObject() || ptn1->is_LocalVar(), "sanity"); |
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1860 assert(ptn2->is_JavaObject() || ptn2->is_LocalVar(), "sanity"); |
0 | 1861 |
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1862 // Check simple cases first. |
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1863 if (jobj1 != NULL) { |
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1864 if (jobj1->escape_state() == PointsToNode::NoEscape) { |
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1865 if (jobj1 == jobj2) { |
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1866 // Comparing the same not escaping object. |
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1867 return _pcmp_eq; |
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1868 } |
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1869 Node* obj = jobj1->ideal_node(); |
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1870 // Comparing not escaping allocation. |
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1871 if ((obj->is_Allocate() || obj->is_CallStaticJava()) && |
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1872 !ptn2->points_to(jobj1)) { |
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1873 return _pcmp_neq; // This includes nullness check. |
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1874 } |
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1875 } |
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1876 } |
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1877 if (jobj2 != NULL) { |
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1878 if (jobj2->escape_state() == PointsToNode::NoEscape) { |
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1879 Node* obj = jobj2->ideal_node(); |
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1880 // Comparing not escaping allocation. |
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1881 if ((obj->is_Allocate() || obj->is_CallStaticJava()) && |
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1882 !ptn1->points_to(jobj2)) { |
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1883 return _pcmp_neq; // This includes nullness check. |
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1884 } |
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1885 } |
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1886 } |
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1887 if (jobj1 != NULL && jobj1 != phantom_obj && |
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1888 jobj2 != NULL && jobj2 != phantom_obj && |
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1889 jobj1->ideal_node()->is_Con() && |
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1890 jobj2->ideal_node()->is_Con()) { |
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1891 // Klass or String constants compare. Need to be careful with |
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1892 // compressed pointers - compare types of ConN and ConP instead of nodes. |
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1893 const Type* t1 = jobj1->ideal_node()->get_ptr_type(); |
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1894 const Type* t2 = jobj2->ideal_node()->get_ptr_type(); |
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1895 if (t1->make_ptr() == t2->make_ptr()) { |
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1896 return _pcmp_eq; |
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1897 } else { |
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1898 return _pcmp_neq; |
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1899 } |
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1900 } |
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1901 if (ptn1->meet(ptn2)) { |
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1902 return NULL; // Sets are not disjoint |
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1903 } |
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1904 |
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1905 // Sets are disjoint. |
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1906 bool set1_has_unknown_ptr = ptn1->points_to(phantom_obj); |
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1907 bool set2_has_unknown_ptr = ptn2->points_to(phantom_obj); |
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1908 bool set1_has_null_ptr = ptn1->points_to(null_obj); |
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1909 bool set2_has_null_ptr = ptn2->points_to(null_obj); |
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1910 if (set1_has_unknown_ptr && set2_has_null_ptr || |
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1911 set2_has_unknown_ptr && set1_has_null_ptr) { |
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1912 // Check nullness of unknown object. |
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1913 return NULL; |
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1914 } |
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1915 |
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1916 // Disjointness by itself is not sufficient since |
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1917 // alias analysis is not complete for escaped objects. |
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1918 // Disjoint sets are definitely unrelated only when |
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1919 // at least one set has only not escaping allocations. |
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1920 if (!set1_has_unknown_ptr && !set1_has_null_ptr) { |
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1921 if (ptn1->non_escaping_allocation()) { |
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1922 return _pcmp_neq; |
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1923 } |
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1924 } |
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1925 if (!set2_has_unknown_ptr && !set2_has_null_ptr) { |
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1926 if (ptn2->non_escaping_allocation()) { |
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1927 return _pcmp_neq; |
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1928 } |
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1929 } |
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1930 return NULL; |
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1931 } |
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1932 |
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1933 // Connection Graph constuction functions. |
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1934 |
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1935 void ConnectionGraph::add_local_var(Node *n, PointsToNode::EscapeState es) { |
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1936 PointsToNode* ptadr = _nodes.at(n->_idx); |
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1937 if (ptadr != NULL) { |
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1938 assert(ptadr->is_LocalVar() && ptadr->ideal_node() == n, "sanity"); |
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1939 return; |
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1940 } |
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1941 Compile* C = _compile; |
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1942 ptadr = new (C->comp_arena()) LocalVarNode(this, n, es); |
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1943 _nodes.at_put(n->_idx, ptadr); |
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1944 } |
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1945 |
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1946 void ConnectionGraph::add_java_object(Node *n, PointsToNode::EscapeState es) { |
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1947 PointsToNode* ptadr = _nodes.at(n->_idx); |
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1948 if (ptadr != NULL) { |
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1949 assert(ptadr->is_JavaObject() && ptadr->ideal_node() == n, "sanity"); |
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1950 return; |
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1951 } |
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1952 Compile* C = _compile; |
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1953 ptadr = new (C->comp_arena()) JavaObjectNode(this, n, es); |
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1954 _nodes.at_put(n->_idx, ptadr); |
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1955 } |
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1956 |
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1957 void ConnectionGraph::add_field(Node *n, PointsToNode::EscapeState es, int offset) { |
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1958 PointsToNode* ptadr = _nodes.at(n->_idx); |
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1959 if (ptadr != NULL) { |
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1960 assert(ptadr->is_Field() && ptadr->ideal_node() == n, "sanity"); |
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1961 return; |
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1962 } |
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1963 bool unsafe = false; |
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1964 bool is_oop = is_oop_field(n, offset, &unsafe); |
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1965 if (unsafe) { |
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1966 es = PointsToNode::GlobalEscape; |
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1967 } |
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1968 Compile* C = _compile; |
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1969 FieldNode* field = new (C->comp_arena()) FieldNode(this, n, es, offset, is_oop); |
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1970 _nodes.at_put(n->_idx, field); |
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1971 } |
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1972 |
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1973 void ConnectionGraph::add_arraycopy(Node *n, PointsToNode::EscapeState es, |
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1974 PointsToNode* src, PointsToNode* dst) { |
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1975 assert(!src->is_Field() && !dst->is_Field(), "only for JavaObject and LocalVar"); |
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1976 assert((src != null_obj) && (dst != null_obj), "not for ConP NULL"); |
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1977 PointsToNode* ptadr = _nodes.at(n->_idx); |
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1978 if (ptadr != NULL) { |
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1979 assert(ptadr->is_Arraycopy() && ptadr->ideal_node() == n, "sanity"); |
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1980 return; |
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1981 } |
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1982 Compile* C = _compile; |
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1983 ptadr = new (C->comp_arena()) ArraycopyNode(this, n, es); |
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1984 _nodes.at_put(n->_idx, ptadr); |
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1985 // Add edge from arraycopy node to source object. |
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1986 (void)add_edge(ptadr, src); |
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1987 src->set_arraycopy_src(); |
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1988 // Add edge from destination object to arraycopy node. |
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1989 (void)add_edge(dst, ptadr); |
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1990 dst->set_arraycopy_dst(); |
0 | 1991 } |
1992 | |
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1993 bool ConnectionGraph::is_oop_field(Node* n, int offset, bool* unsafe) { |
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1994 const Type* adr_type = n->as_AddP()->bottom_type(); |
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1995 BasicType bt = T_INT; |
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1996 if (offset == Type::OffsetBot) { |
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1997 // Check only oop fields. |
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1998 if (!adr_type->isa_aryptr() || |
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1999 (adr_type->isa_aryptr()->klass() == NULL) || |
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2000 adr_type->isa_aryptr()->klass()->is_obj_array_klass()) { |
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2001 // OffsetBot is used to reference array's element. Ignore first AddP. |
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2002 if (find_second_addp(n, n->in(AddPNode::Base)) == NULL) { |
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2003 bt = T_OBJECT; |
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2004 } |
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2005 } |
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|
2006 } else if (offset != oopDesc::klass_offset_in_bytes()) { |
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|
2007 if (adr_type->isa_instptr()) { |
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|
2008 ciField* field = _compile->alias_type(adr_type->isa_instptr())->field(); |
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changeset
|
2009 if (field != NULL) { |
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changeset
|
2010 bt = field->layout_type(); |
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|
2011 } else { |
6266
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changeset
|
2012 // Check for unsafe oop field access |
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|
2013 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
1d7922586cf6
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changeset
|
2014 int opcode = n->fast_out(i)->Opcode(); |
1d7922586cf6
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diff
changeset
|
2015 if (opcode == Op_StoreP || opcode == Op_LoadP || |
1d7922586cf6
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diff
changeset
|
2016 opcode == Op_StoreN || opcode == Op_LoadN) { |
1d7922586cf6
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changeset
|
2017 bt = T_OBJECT; |
1d7922586cf6
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diff
changeset
|
2018 (*unsafe) = true; |
1d7922586cf6
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diff
changeset
|
2019 break; |
1d7922586cf6
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changeset
|
2020 } |
1d7922586cf6
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diff
changeset
|
2021 } |
5948
ee138854b3a6
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changeset
|
2022 } |
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changeset
|
2023 } else if (adr_type->isa_aryptr()) { |
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changeset
|
2024 if (offset == arrayOopDesc::length_offset_in_bytes()) { |
ee138854b3a6
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changeset
|
2025 // Ignore array length load. |
ee138854b3a6
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changeset
|
2026 } else if (find_second_addp(n, n->in(AddPNode::Base)) != NULL) { |
ee138854b3a6
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changeset
|
2027 // Ignore first AddP. |
ee138854b3a6
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changeset
|
2028 } else { |
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|
2029 const Type* elemtype = adr_type->isa_aryptr()->elem(); |
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|
2030 bt = elemtype->array_element_basic_type(); |
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|
2031 } |
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|
2032 } else if (adr_type->isa_rawptr() || adr_type->isa_klassptr()) { |
ee138854b3a6
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changeset
|
2033 // Allocation initialization, ThreadLocal field access, unsafe access |
ee138854b3a6
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changeset
|
2034 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
ee138854b3a6
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changeset
|
2035 int opcode = n->fast_out(i)->Opcode(); |
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changeset
|
2036 if (opcode == Op_StoreP || opcode == Op_LoadP || |
ee138854b3a6
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changeset
|
2037 opcode == Op_StoreN || opcode == Op_LoadN) { |
ee138854b3a6
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changeset
|
2038 bt = T_OBJECT; |
6266
1d7922586cf6
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twisti
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diff
changeset
|
2039 break; |
5948
ee138854b3a6
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parents:
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diff
changeset
|
2040 } |
ee138854b3a6
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kvn
parents:
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diff
changeset
|
2041 } |
ee138854b3a6
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kvn
parents:
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diff
changeset
|
2042 } |
ee138854b3a6
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diff
changeset
|
2043 } |
ee138854b3a6
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|
2044 return (bt == T_OBJECT || bt == T_NARROWOOP || bt == T_ARRAY); |
ee138854b3a6
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diff
changeset
|
2045 } |
ee138854b3a6
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diff
changeset
|
2046 |
ee138854b3a6
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changeset
|
2047 // Returns unique pointed java object or NULL. |
ee138854b3a6
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changeset
|
2048 JavaObjectNode* ConnectionGraph::unique_java_object(Node *n) { |
ee138854b3a6
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changeset
|
2049 assert(!_collecting, "should not call when contructed graph"); |
ee138854b3a6
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diff
changeset
|
2050 // If the node was created after the escape computation we can't answer. |
ee138854b3a6
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diff
changeset
|
2051 uint idx = n->_idx; |
ee138854b3a6
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kvn
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diff
changeset
|
2052 if (idx >= nodes_size()) { |
ee138854b3a6
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kvn
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diff
changeset
|
2053 return NULL; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2054 } |
ee138854b3a6
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kvn
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diff
changeset
|
2055 PointsToNode* ptn = ptnode_adr(idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
2056 if (ptn->is_JavaObject()) { |
ee138854b3a6
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|
2057 return ptn->as_JavaObject(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
2058 } |
ee138854b3a6
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changeset
|
2059 assert(ptn->is_LocalVar(), "sanity"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
2060 // Check all java objects it points to. |
ee138854b3a6
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diff
changeset
|
2061 JavaObjectNode* jobj = NULL; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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changeset
|
2062 for (EdgeIterator i(ptn); i.has_next(); i.next()) { |
ee138854b3a6
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changeset
|
2063 PointsToNode* e = i.get(); |
ee138854b3a6
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changeset
|
2064 if (e->is_JavaObject()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
2065 if (jobj == NULL) { |
ee138854b3a6
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changeset
|
2066 jobj = e->as_JavaObject(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
2067 } else if (jobj != e) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2068 return NULL; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2069 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2070 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2071 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2072 return jobj; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2073 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2074 |
ee138854b3a6
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diff
changeset
|
2075 // Return true if this node points only to non-escaping allocations. |
ee138854b3a6
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changeset
|
2076 bool PointsToNode::non_escaping_allocation() { |
ee138854b3a6
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diff
changeset
|
2077 if (is_JavaObject()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
2078 Node* n = ideal_node(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
2079 if (n->is_Allocate() || n->is_CallStaticJava()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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changeset
|
2080 return (escape_state() == PointsToNode::NoEscape); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
2081 } else { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2082 return false; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2083 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2084 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
2085 assert(is_LocalVar(), "sanity"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
2086 // Check all java objects it points to. |
ee138854b3a6
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kvn
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diff
changeset
|
2087 for (EdgeIterator i(this); i.has_next(); i.next()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
2088 PointsToNode* e = i.get(); |
ee138854b3a6
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kvn
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diff
changeset
|
2089 if (e->is_JavaObject()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
2090 Node* n = e->ideal_node(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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changeset
|
2091 if ((e->escape_state() != PointsToNode::NoEscape) || |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
2092 !(n->is_Allocate() || n->is_CallStaticJava())) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2093 return false; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2094 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2095 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2096 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2097 return true; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2098 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
2099 |
ee138854b3a6
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changeset
|
2100 // Return true if we know the node does not escape globally. |
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kvn
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changeset
|
2101 bool ConnectionGraph::not_global_escape(Node *n) { |
ee138854b3a6
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changeset
|
2102 assert(!_collecting, "should not call during graph construction"); |
ee138854b3a6
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diff
changeset
|
2103 // If the node was created after the escape computation we can't answer. |
ee138854b3a6
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kvn
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diff
changeset
|
2104 uint idx = n->_idx; |
ee138854b3a6
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kvn
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diff
changeset
|
2105 if (idx >= nodes_size()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2106 return false; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2107 } |
ee138854b3a6
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kvn
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diff
changeset
|
2108 PointsToNode* ptn = ptnode_adr(idx); |
ee138854b3a6
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changeset
|
2109 PointsToNode::EscapeState es = ptn->escape_state(); |
ee138854b3a6
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changeset
|
2110 // If we have already computed a value, return it. |
ee138854b3a6
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changeset
|
2111 if (es >= PointsToNode::GlobalEscape) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
2112 return false; |
ee138854b3a6
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kvn
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diff
changeset
|
2113 if (ptn->is_JavaObject()) { |
ee138854b3a6
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kvn
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diff
changeset
|
2114 return true; // (es < PointsToNode::GlobalEscape); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
2115 } |
ee138854b3a6
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kvn
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diff
changeset
|
2116 assert(ptn->is_LocalVar(), "sanity"); |
ee138854b3a6
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kvn
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changeset
|
2117 // Check all java objects it points to. |
ee138854b3a6
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changeset
|
2118 for (EdgeIterator i(ptn); i.has_next(); i.next()) { |
ee138854b3a6
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changeset
|
2119 if (i.get()->escape_state() >= PointsToNode::GlobalEscape) |
ee138854b3a6
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kvn
parents:
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diff
changeset
|
2120 return false; |
ee138854b3a6
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kvn
parents:
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diff
changeset
|
2121 } |
ee138854b3a6
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kvn
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diff
changeset
|
2122 return true; |
ee138854b3a6
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kvn
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diff
changeset
|
2123 } |
ee138854b3a6
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diff
changeset
|
2124 |
ee138854b3a6
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diff
changeset
|
2125 |
ee138854b3a6
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diff
changeset
|
2126 // Helper functions |
ee138854b3a6
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changeset
|
2127 |
ee138854b3a6
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changeset
|
2128 // Return true if this node points to specified node or nodes it points to. |
ee138854b3a6
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changeset
|
2129 bool PointsToNode::points_to(JavaObjectNode* ptn) const { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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2130 if (is_JavaObject()) { |
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2131 return (this == ptn); |
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2132 } |
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2133 assert(is_LocalVar() || is_Field(), "sanity"); |
5948
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2134 for (EdgeIterator i(this); i.has_next(); i.next()) { |
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2135 if (i.get() == ptn) |
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2136 return true; |
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2137 } |
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2138 return false; |
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|
2139 } |
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2140 |
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2141 // Return true if one node points to an other. |
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2142 bool PointsToNode::meet(PointsToNode* ptn) { |
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2143 if (this == ptn) { |
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2144 return true; |
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2145 } else if (ptn->is_JavaObject()) { |
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2146 return this->points_to(ptn->as_JavaObject()); |
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2147 } else if (this->is_JavaObject()) { |
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2148 return ptn->points_to(this->as_JavaObject()); |
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2149 } |
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2150 assert(this->is_LocalVar() && ptn->is_LocalVar(), "sanity"); |
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2151 int ptn_count = ptn->edge_count(); |
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2152 for (EdgeIterator i(this); i.has_next(); i.next()) { |
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2153 PointsToNode* this_e = i.get(); |
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2154 for (int j = 0; j < ptn_count; j++) { |
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2155 if (this_e == ptn->edge(j)) |
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2156 return true; |
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2157 } |
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2158 } |
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2159 return false; |
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|
2160 } |
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2161 |
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|
2162 #ifdef ASSERT |
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2163 // Return true if bases point to this java object. |
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2164 bool FieldNode::has_base(JavaObjectNode* jobj) const { |
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2165 for (BaseIterator i(this); i.has_next(); i.next()) { |
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2166 if (i.get() == jobj) |
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2167 return true; |
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|
2168 } |
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2169 return false; |
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|
2170 } |
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2171 #endif |
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2172 |
65 | 2173 int ConnectionGraph::address_offset(Node* adr, PhaseTransform *phase) { |
2174 const Type *adr_type = phase->type(adr); | |
2175 if (adr->is_AddP() && adr_type->isa_oopptr() == NULL && | |
2176 adr->in(AddPNode::Address)->is_Proj() && | |
2177 adr->in(AddPNode::Address)->in(0)->is_Allocate()) { | |
2178 // We are computing a raw address for a store captured by an Initialize | |
2179 // compute an appropriate address type. AddP cases #3 and #5 (see below). | |
2180 int offs = (int)phase->find_intptr_t_con(adr->in(AddPNode::Offset), Type::OffsetBot); | |
2181 assert(offs != Type::OffsetBot || | |
2182 adr->in(AddPNode::Address)->in(0)->is_AllocateArray(), | |
2183 "offset must be a constant or it is initialization of array"); | |
2184 return offs; | |
2185 } | |
2186 const TypePtr *t_ptr = adr_type->isa_ptr(); | |
0 | 2187 assert(t_ptr != NULL, "must be a pointer type"); |
2188 return t_ptr->offset(); | |
2189 } | |
2190 | |
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2191 Node* ConnectionGraph::get_addp_base(Node *addp) { |
65 | 2192 assert(addp->is_AddP(), "must be AddP"); |
2193 // | |
2194 // AddP cases for Base and Address inputs: | |
2195 // case #1. Direct object's field reference: | |
2196 // Allocate | |
2197 // | | |
2198 // Proj #5 ( oop result ) | |
2199 // | | |
2200 // CheckCastPP (cast to instance type) | |
2201 // | | | |
2202 // AddP ( base == address ) | |
2203 // | |
2204 // case #2. Indirect object's field reference: | |
2205 // Phi | |
2206 // | | |
2207 // CastPP (cast to instance type) | |
2208 // | | | |
2209 // AddP ( base == address ) | |
2210 // | |
2211 // case #3. Raw object's field reference for Initialize node: | |
2212 // Allocate | |
2213 // | | |
2214 // Proj #5 ( oop result ) | |
2215 // top | | |
2216 // \ | | |
2217 // AddP ( base == top ) | |
2218 // | |
2219 // case #4. Array's element reference: | |
2220 // {CheckCastPP | CastPP} | |
2221 // | | | | |
2222 // | AddP ( array's element offset ) | |
2223 // | | | |
2224 // AddP ( array's offset ) | |
2225 // | |
2226 // case #5. Raw object's field reference for arraycopy stub call: | |
2227 // The inline_native_clone() case when the arraycopy stub is called | |
2228 // after the allocation before Initialize and CheckCastPP nodes. | |
2229 // Allocate | |
2230 // | | |
2231 // Proj #5 ( oop result ) | |
2232 // | | | |
2233 // AddP ( base == address ) | |
2234 // | |
77 | 2235 // case #6. Constant Pool, ThreadLocal, CastX2P or |
2236 // Raw object's field reference: | |
2237 // {ConP, ThreadLocal, CastX2P, raw Load} | |
65 | 2238 // top | |
2239 // \ | | |
2240 // AddP ( base == top ) | |
2241 // | |
77 | 2242 // case #7. Klass's field reference. |
2243 // LoadKlass | |
2244 // | | | |
2245 // AddP ( base == address ) | |
2246 // | |
164
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2247 // case #8. narrow Klass's field reference. |
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2248 // LoadNKlass |
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2249 // | |
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2250 // DecodeN |
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2251 // | | |
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2252 // AddP ( base == address ) |
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2253 // |
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2254 Node *base = addp->in(AddPNode::Base); |
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2255 if (base->uncast()->is_top()) { // The AddP case #3 and #6. |
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2256 base = addp->in(AddPNode::Address); |
957 | 2257 while (base->is_AddP()) { |
2258 // Case #6 (unsafe access) may have several chained AddP nodes. | |
5948
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2259 assert(base->in(AddPNode::Base)->uncast()->is_top(), "expected unsafe access address only"); |
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2260 base = base->in(AddPNode::Address); |
957 | 2261 } |
5948
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2262 Node* uncast_base = base->uncast(); |
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2263 int opcode = uncast_base->Opcode(); |
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2264 assert(opcode == Op_ConP || opcode == Op_ThreadLocal || |
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2265 opcode == Op_CastX2P || uncast_base->is_DecodeNarrowPtr() || |
10391
83dcb116fdb1
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2266 (uncast_base->is_Mem() && (uncast_base->bottom_type()->isa_rawptr() != NULL)) || |
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2267 (uncast_base->is_Proj() && uncast_base->in(0)->is_Allocate()), "sanity"); |
0 | 2268 } |
65 | 2269 return base; |
2270 } | |
2271 | |
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2272 Node* ConnectionGraph::find_second_addp(Node* addp, Node* n) { |
65 | 2273 assert(addp->is_AddP() && addp->outcnt() > 0, "Don't process dead nodes"); |
2274 Node* addp2 = addp->raw_out(0); | |
2275 if (addp->outcnt() == 1 && addp2->is_AddP() && | |
2276 addp2->in(AddPNode::Base) == n && | |
2277 addp2->in(AddPNode::Address) == addp) { | |
2278 assert(addp->in(AddPNode::Base) == n, "expecting the same base"); | |
2279 // | |
2280 // Find array's offset to push it on worklist first and | |
2281 // as result process an array's element offset first (pushed second) | |
2282 // to avoid CastPP for the array's offset. | |
2283 // Otherwise the inserted CastPP (LocalVar) will point to what | |
2284 // the AddP (Field) points to. Which would be wrong since | |
2285 // the algorithm expects the CastPP has the same point as | |
2286 // as AddP's base CheckCastPP (LocalVar). | |
2287 // | |
2288 // ArrayAllocation | |
2289 // | | |
2290 // CheckCastPP | |
2291 // | | |
2292 // memProj (from ArrayAllocation CheckCastPP) | |
2293 // | || | |
2294 // | || Int (element index) | |
2295 // | || | ConI (log(element size)) | |
2296 // | || | / | |
2297 // | || LShift | |
2298 // | || / | |
2299 // | AddP (array's element offset) | |
2300 // | | | |
2301 // | | ConI (array's offset: #12(32-bits) or #24(64-bits)) | |
2302 // | / / | |
2303 // AddP (array's offset) | |
2304 // | | |
2305 // Load/Store (memory operation on array's element) | |
2306 // | |
2307 return addp2; | |
2308 } | |
2309 return NULL; | |
0 | 2310 } |
2311 | |
2312 // | |
2313 // Adjust the type and inputs of an AddP which computes the | |
2314 // address of a field of an instance | |
2315 // | |
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2316 bool ConnectionGraph::split_AddP(Node *addp, Node *base) { |
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2317 PhaseGVN* igvn = _igvn; |
65 | 2318 const TypeOopPtr *base_t = igvn->type(base)->isa_oopptr(); |
223 | 2319 assert(base_t != NULL && base_t->is_known_instance(), "expecting instance oopptr"); |
0 | 2320 const TypeOopPtr *t = igvn->type(addp)->isa_oopptr(); |
65 | 2321 if (t == NULL) { |
2322 // We are computing a raw address for a store captured by an Initialize | |
293
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2323 // compute an appropriate address type (cases #3 and #5). |
65 | 2324 assert(igvn->type(addp) == TypeRawPtr::NOTNULL, "must be raw pointer"); |
2325 assert(addp->in(AddPNode::Address)->is_Proj(), "base of raw address must be result projection from allocation"); | |
306
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2326 intptr_t offs = (int)igvn->find_intptr_t_con(addp->in(AddPNode::Offset), Type::OffsetBot); |
65 | 2327 assert(offs != Type::OffsetBot, "offset must be a constant"); |
2328 t = base_t->add_offset(offs)->is_oopptr(); | |
2329 } | |
223 | 2330 int inst_id = base_t->instance_id(); |
2331 assert(!t->is_known_instance() || t->instance_id() == inst_id, | |
0 | 2332 "old type must be non-instance or match new type"); |
293
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2333 |
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2334 // The type 't' could be subclass of 'base_t'. |
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2335 // As result t->offset() could be large then base_t's size and it will |
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2336 // cause the failure in add_offset() with narrow oops since TypeOopPtr() |
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2337 // constructor verifies correctness of the offset. |
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2338 // |
605 | 2339 // It could happened on subclass's branch (from the type profiling |
293
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2340 // inlining) which was not eliminated during parsing since the exactness |
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2341 // of the allocation type was not propagated to the subclass type check. |
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2342 // |
988
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2343 // Or the type 't' could be not related to 'base_t' at all. |
7e309ecb83ce
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|
2344 // It could happened when CHA type is different from MDO type on a dead path |
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|
2345 // (for example, from instanceof check) which is not collapsed during parsing. |
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2346 // |
293
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2347 // Do nothing for such AddP node and don't process its users since |
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2348 // this code branch will go away. |
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2349 // |
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2350 if (!t->is_known_instance() && |
988
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2351 !base_t->klass()->is_subtype_of(t->klass())) { |
293
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2352 return false; // bail out |
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|
2353 } |
0 | 2354 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
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|
2355 // 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
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|
2356 // 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
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|
2357 // has side effect. |
0 | 2358 int alias_idx = _compile->get_alias_index(tinst); |
2359 igvn->set_type(addp, tinst); | |
2360 // record the allocation in the node map | |
5948
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|
2361 set_map(addp, get_map(base->_idx)); |
253
b0fe4deeb9fb
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|
2362 // Set addp's Base and Address to 'base'. |
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|
2363 Node *abase = addp->in(AddPNode::Base); |
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|
2364 Node *adr = addp->in(AddPNode::Address); |
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|
2365 if (adr->is_Proj() && adr->in(0)->is_Allocate() && |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
2366 adr->in(0)->_idx == (uint)inst_id) { |
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|
2367 // Skip AddP cases #3 and #5. |
b0fe4deeb9fb
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|
2368 } else { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
2369 assert(!abase->is_top(), "sanity"); // AddP case #3 |
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|
2370 if (abase != base) { |
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|
2371 igvn->hash_delete(addp); |
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|
2372 addp->set_req(AddPNode::Base, base); |
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|
2373 if (abase == adr) { |
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|
2374 addp->set_req(AddPNode::Address, base); |
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|
2375 } else { |
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|
2376 // AddP case #4 (adr is array's element offset AddP node) |
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|
2377 #ifdef ASSERT |
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|
2378 const TypeOopPtr *atype = igvn->type(adr)->isa_oopptr(); |
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|
2379 assert(adr->is_AddP() && atype != NULL && |
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|
2380 atype->instance_id() == inst_id, "array's element offset should be processed first"); |
b0fe4deeb9fb
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|
2381 #endif |
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|
2382 } |
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|
2383 igvn->hash_insert(addp); |
0 | 2384 } |
2385 } | |
65 | 2386 // Put on IGVN worklist since at least addp's type was changed above. |
2387 record_for_optimizer(addp); | |
293
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|
2388 return true; |
0 | 2389 } |
2390 | |
2391 // | |
2392 // 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
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changeset
|
2393 // created phi or an existing phi. Sets create_new to indicate whether a new |
0 | 2394 // phi was created. Cache the last newly created phi in the node map. |
2395 // | |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
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|
2396 PhiNode *ConnectionGraph::create_split_phi(PhiNode *orig_phi, int alias_idx, GrowableArray<PhiNode *> &orig_phi_worklist, bool &new_created) { |
0 | 2397 Compile *C = _compile; |
5948
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|
2398 PhaseGVN* igvn = _igvn; |
0 | 2399 new_created = false; |
2400 int phi_alias_idx = C->get_alias_index(orig_phi->adr_type()); | |
2401 // nothing to do if orig_phi is bottom memory or matches alias_idx | |
65 | 2402 if (phi_alias_idx == alias_idx) { |
0 | 2403 return orig_phi; |
2404 } | |
851
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
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changeset
|
2405 // Have we recently created a Phi for this alias index? |
0 | 2406 PhiNode *result = get_map_phi(orig_phi->_idx); |
2407 if (result != NULL && C->get_alias_index(result->adr_type()) == alias_idx) { | |
2408 return result; | |
2409 } | |
851
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
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changeset
|
2410 // Previous check may fail when the same wide memory Phi was split into Phis |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
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784
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|
2411 // for different memory slices. Search all Phis for this region. |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
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|
2412 if (result != NULL) { |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
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|
2413 Node* region = orig_phi->in(0); |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
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|
2414 for (DUIterator_Fast imax, i = region->fast_outs(imax); i < imax; i++) { |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
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784
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|
2415 Node* phi = region->fast_out(i); |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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diff
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|
2416 if (phi->is_Phi() && |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
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|
2417 C->get_alias_index(phi->as_Phi()->adr_type()) == alias_idx) { |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
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|
2418 assert(phi->_idx >= nodes_size(), "only new Phi per instance memory slice"); |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
diff
changeset
|
2419 return phi->as_Phi(); |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
diff
changeset
|
2420 } |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
diff
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|
2421 } |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
diff
changeset
|
2422 } |
20671
9e69e8d1c900
8058148: MaxNodeLimit and LiveNodeCountInliningCutoff
vlivanov
parents:
20585
diff
changeset
|
2423 if (C->live_nodes() + 2*NodeLimitFudgeFactor > C->max_node_limit()) { |
38
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
2424 if (C->do_escape_analysis() == true && !C->failing()) { |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
2425 // Retry compilation without escape analysis. |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
2426 // 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
|
2427 // 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
|
2428 C->record_failure(C2Compiler::retry_no_escape_analysis()); |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
2429 } |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
2430 return NULL; |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
2431 } |
0 | 2432 orig_phi_worklist.append_if_missing(orig_phi); |
65 | 2433 const TypePtr *atype = C->get_adr_type(alias_idx); |
0 | 2434 result = PhiNode::make(orig_phi->in(0), NULL, Type::MEMORY, atype); |
851
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
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changeset
|
2435 C->copy_node_notes_to(result, orig_phi); |
0 | 2436 igvn->set_type(result, result->bottom_type()); |
2437 record_for_optimizer(result); | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
2438 set_map(orig_phi, result); |
0 | 2439 new_created = true; |
2440 return result; | |
2441 } | |
2442 | |
2443 // | |
2459
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents:
2249
diff
changeset
|
2444 // Return a new version of Memory Phi "orig_phi" with the inputs having the |
0 | 2445 // specified alias index. |
2446 // | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
2447 PhiNode *ConnectionGraph::split_memory_phi(PhiNode *orig_phi, int alias_idx, GrowableArray<PhiNode *> &orig_phi_worklist) { |
0 | 2448 assert(alias_idx != Compile::AliasIdxBot, "can't split out bottom memory"); |
2449 Compile *C = _compile; | |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
2450 PhaseGVN* igvn = _igvn; |
0 | 2451 bool new_phi_created; |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
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changeset
|
2452 PhiNode *result = create_split_phi(orig_phi, alias_idx, orig_phi_worklist, new_phi_created); |
0 | 2453 if (!new_phi_created) { |
2454 return result; | |
2455 } | |
2456 GrowableArray<PhiNode *> phi_list; | |
2457 GrowableArray<uint> cur_input; | |
2458 PhiNode *phi = orig_phi; | |
2459 uint idx = 1; | |
2460 bool finished = false; | |
2461 while(!finished) { | |
2462 while (idx < phi->req()) { | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
2463 Node *mem = find_inst_mem(phi->in(idx), alias_idx, orig_phi_worklist); |
0 | 2464 if (mem != NULL && mem->is_Phi()) { |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2465 PhiNode *newphi = create_split_phi(mem->as_Phi(), alias_idx, orig_phi_worklist, new_phi_created); |
0 | 2466 if (new_phi_created) { |
2467 // found an phi for which we created a new split, push current one on worklist and begin | |
2468 // processing new one | |
2469 phi_list.push(phi); | |
2470 cur_input.push(idx); | |
2471 phi = mem->as_Phi(); | |
65 | 2472 result = newphi; |
0 | 2473 idx = 1; |
2474 continue; | |
2475 } else { | |
65 | 2476 mem = newphi; |
0 | 2477 } |
2478 } | |
38
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
2479 if (C->failing()) { |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
2480 return NULL; |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
2481 } |
0 | 2482 result->set_req(idx++, mem); |
2483 } | |
2484 #ifdef ASSERT | |
2485 // verify that the new Phi has an input for each input of the original | |
2486 assert( phi->req() == result->req(), "must have same number of inputs."); | |
2487 assert( result->in(0) != NULL && result->in(0) == phi->in(0), "regions must match"); | |
65 | 2488 #endif |
2489 // Check if all new phi's inputs have specified alias index. | |
2490 // Otherwise use old phi. | |
0 | 2491 for (uint i = 1; i < phi->req(); i++) { |
65 | 2492 Node* in = result->in(i); |
2493 assert((phi->in(i) == NULL) == (in == NULL), "inputs must correspond."); | |
0 | 2494 } |
2495 // we have finished processing a Phi, see if there are any more to do | |
2496 finished = (phi_list.length() == 0 ); | |
2497 if (!finished) { | |
2498 phi = phi_list.pop(); | |
2499 idx = cur_input.pop(); | |
65 | 2500 PhiNode *prev_result = get_map_phi(phi->_idx); |
2501 prev_result->set_req(idx++, result); | |
2502 result = prev_result; | |
0 | 2503 } |
2504 } | |
2505 return result; | |
2506 } | |
2507 | |
65 | 2508 // |
2509 // The next methods are derived from methods in MemNode. | |
2510 // | |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
2511 Node* ConnectionGraph::step_through_mergemem(MergeMemNode *mmem, int alias_idx, const TypeOopPtr *toop) { |
65 | 2512 Node *mem = mmem; |
1815 | 2513 // TypeOopPtr::NOTNULL+any is an OOP with unknown offset - generally |
65 | 2514 // means an array I have not precisely typed yet. Do not do any |
2515 // alias stuff with it any time soon. | |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
2516 if (toop->base() != Type::AnyPtr && |
1815 | 2517 !(toop->klass() != NULL && |
2518 toop->klass()->is_java_lang_Object() && | |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
2519 toop->offset() == Type::OffsetBot)) { |
65 | 2520 mem = mmem->memory_at(alias_idx); |
2521 // Update input if it is progress over what we have now | |
2522 } | |
2523 return mem; | |
2524 } | |
2525 | |
2526 // | |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
changeset
|
2527 // Move memory users to their memory slices. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
changeset
|
2528 // |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2529 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
|
2530 Compile* C = _compile; |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
2531 PhaseGVN* igvn = _igvn; |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2532 const TypePtr* tp = igvn->type(n->in(MemNode::Address))->isa_ptr(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
changeset
|
2533 assert(tp != NULL, "ptr type"); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
changeset
|
2534 int alias_idx = C->get_alias_index(tp); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2535 int general_idx = C->get_general_index(alias_idx); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
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|
2536 |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
changeset
|
2537 // Move users first |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2538 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2539 Node* use = n->fast_out(i); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
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diff
changeset
|
2540 if (use->is_MergeMem()) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2541 MergeMemNode* mmem = use->as_MergeMem(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
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diff
changeset
|
2542 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:
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diff
changeset
|
2543 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
|
2544 continue; // Nothing to do |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2545 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2546 // Replace previous general reference to mem node. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2547 uint orig_uniq = C->unique(); |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2548 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
|
2549 assert(orig_uniq == C->unique(), "no new nodes"); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2550 mmem->set_memory_at(general_idx, m); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2551 --imax; |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2552 --i; |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2553 } else if (use->is_MemBar()) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2554 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
|
2555 if (use->req() > MemBarNode::Precedent && |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2556 use->in(MemBarNode::Precedent) == n) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2557 // Don't move related membars. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2558 record_for_optimizer(use); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2559 continue; |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2560 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2561 tp = use->as_MemBar()->adr_type()->isa_ptr(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2562 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
|
2563 alias_idx == general_idx) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2564 continue; // Nothing to do |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2565 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2566 // Move to general memory slice. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2567 uint orig_uniq = C->unique(); |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2568 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
|
2569 assert(orig_uniq == C->unique(), "no new nodes"); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2570 igvn->hash_delete(use); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2571 imax -= use->replace_edge(n, m); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2572 igvn->hash_insert(use); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2573 record_for_optimizer(use); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2574 --i; |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2575 #ifdef ASSERT |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2576 } else if (use->is_Mem()) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2577 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
|
2578 // Don't move related cardmark. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2579 continue; |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2580 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2581 // Memory nodes should have new memory input. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2582 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
|
2583 assert(tp != NULL, "ptr type"); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2584 int idx = C->get_alias_index(tp); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2585 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
|
2586 "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
|
2587 } else if (use->is_Phi()) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2588 // Phi nodes should be split and moved already. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2589 tp = use->as_Phi()->adr_type()->isa_ptr(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2590 assert(tp != NULL, "ptr type"); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2591 int idx = C->get_alias_index(tp); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2592 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
|
2593 } else { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2594 use->dump(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2595 assert(false, "should not be here"); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2596 #endif |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2597 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2598 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2599 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2600 |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2601 // |
65 | 2602 // Search memory chain of "mem" to find a MemNode whose address |
2603 // is the specified alias index. | |
2604 // | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2605 Node* ConnectionGraph::find_inst_mem(Node *orig_mem, int alias_idx, GrowableArray<PhiNode *> &orig_phis) { |
65 | 2606 if (orig_mem == NULL) |
2607 return orig_mem; | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2608 Compile* C = _compile; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2609 PhaseGVN* igvn = _igvn; |
1815 | 2610 const TypeOopPtr *toop = C->get_adr_type(alias_idx)->isa_oopptr(); |
2611 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
|
2612 Node *start_mem = C->start()->proj_out(TypeFunc::Memory); |
65 | 2613 Node *prev = NULL; |
2614 Node *result = orig_mem; | |
2615 while (prev != result) { | |
2616 prev = result; | |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
247
diff
changeset
|
2617 if (result == start_mem) |
605 | 2618 break; // hit one of our sentinels |
65 | 2619 if (result->is_Mem()) { |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2620 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
|
2621 if (at == Type::TOP) |
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents:
2249
diff
changeset
|
2622 break; // Dead |
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents:
2249
diff
changeset
|
2623 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
|
2624 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
|
2625 if (idx == alias_idx) |
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents:
2249
diff
changeset
|
2626 break; // Found |
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents:
2249
diff
changeset
|
2627 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
|
2628 !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
|
2629 break; // Do not skip store to general memory slice. |
65 | 2630 } |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
247
diff
changeset
|
2631 result = result->in(MemNode::Memory); |
65 | 2632 } |
2633 if (!is_instance) | |
2634 continue; // don't search further for non-instance types | |
2635 // skip over a call which does not affect this memory slice | |
2636 if (result->is_Proj() && result->as_Proj()->_con == TypeFunc::Memory) { | |
2637 Node *proj_in = result->in(0); | |
1815 | 2638 if (proj_in->is_Allocate() && proj_in->_idx == (uint)toop->instance_id()) { |
605 | 2639 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
|
2640 } else if (proj_in->is_Call()) { |
65 | 2641 CallNode *call = proj_in->as_Call(); |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2642 if (!call->may_modify(toop, igvn)) { |
65 | 2643 result = call->in(TypeFunc::Memory); |
2644 } | |
2645 } else if (proj_in->is_Initialize()) { | |
2646 AllocateNode* alloc = proj_in->as_Initialize()->allocation(); | |
2647 // Stop if this is the initialization for the object instance which | |
2648 // which contains this memory slice, otherwise skip over it. | |
1815 | 2649 if (alloc == NULL || alloc->_idx != (uint)toop->instance_id()) { |
65 | 2650 result = proj_in->in(TypeFunc::Memory); |
2651 } | |
2652 } else if (proj_in->is_MemBar()) { | |
2653 result = proj_in->in(TypeFunc::Memory); | |
2654 } | |
2655 } else if (result->is_MergeMem()) { | |
2656 MergeMemNode *mmem = result->as_MergeMem(); | |
1815 | 2657 result = step_through_mergemem(mmem, alias_idx, toop); |
65 | 2658 if (result == mmem->base_memory()) { |
2659 // Didn't find instance memory, search through general slice recursively. | |
2660 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
|
2661 result = find_inst_mem(result, alias_idx, orig_phis); |
65 | 2662 if (C->failing()) { |
2663 return NULL; | |
2664 } | |
2665 mmem->set_memory_at(alias_idx, result); | |
2666 } | |
2667 } else if (result->is_Phi() && | |
2668 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
|
2669 Node *un = result->as_Phi()->unique_input(igvn); |
65 | 2670 if (un != NULL) { |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2671 orig_phis.append_if_missing(result->as_Phi()); |
65 | 2672 result = un; |
2673 } else { | |
2674 break; | |
2675 } | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2676 } else if (result->is_ClearArray()) { |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2677 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
|
2678 // Can not bypass initialization of the instance |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2679 // we are looking for. |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2680 break; |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2681 } |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2682 // Otherwise skip it (the call updated 'result' value). |
584 | 2683 } else if (result->Opcode() == Op_SCMemProj) { |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2684 Node* mem = result->in(0); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2685 Node* adr = NULL; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2686 if (mem->is_LoadStore()) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2687 adr = mem->in(MemNode::Address); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2688 } else { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2689 assert(mem->Opcode() == Op_EncodeISOArray, "sanity"); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2690 adr = mem->in(3); // Memory edge corresponds to destination array |
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|
2691 } |
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|
2692 const Type *at = igvn->type(adr); |
584 | 2693 if (at != Type::TOP) { |
2694 assert (at->isa_ptr() != NULL, "pointer type required."); | |
2695 int idx = C->get_alias_index(at->is_ptr()); | |
2696 assert(idx != alias_idx, "Object is not scalar replaceable if a LoadStore node access its field"); | |
2697 break; | |
2698 } | |
7637
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2699 result = mem->in(MemNode::Memory); |
65 | 2700 } |
2701 } | |
247 | 2702 if (result->is_Phi()) { |
65 | 2703 PhiNode *mphi = result->as_Phi(); |
2704 assert(mphi->bottom_type() == Type::MEMORY, "memory phi required"); | |
2705 const TypePtr *t = mphi->adr_type(); | |
2459
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6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
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2249
diff
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|
2706 if (!is_instance) { |
247 | 2707 // Push all non-instance Phis on the orig_phis worklist to update inputs |
2708 // during Phase 4 if needed. | |
2709 orig_phis.append_if_missing(mphi); | |
2459
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2249
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|
2710 } else if (C->get_alias_index(t) != alias_idx) { |
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|
2711 // Create a new Phi with the specified alias index type. |
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|
2712 result = split_memory_phi(mphi, alias_idx, orig_phis); |
65 | 2713 } |
2714 } | |
2715 // the result is either MemNode, PhiNode, InitializeNode. | |
2716 return result; | |
2717 } | |
2718 | |
0 | 2719 // |
2720 // Convert the types of unescaped object to instance types where possible, | |
2721 // propagate the new type information through the graph, and update memory | |
2722 // edges and MergeMem inputs to reflect the new type. | |
2723 // | |
2724 // We start with allocations (and calls which may be allocations) on alloc_worklist. | |
2725 // The processing is done in 4 phases: | |
2726 // | |
2727 // Phase 1: Process possible allocations from alloc_worklist. Create instance | |
2728 // types for the CheckCastPP for allocations where possible. | |
2729 // Propagate the the new types through users as follows: | |
2730 // casts and Phi: push users on alloc_worklist | |
2731 // AddP: cast Base and Address inputs to the instance type | |
2732 // push any AddP users on alloc_worklist and push any memnode | |
2733 // users onto memnode_worklist. | |
2734 // Phase 2: Process MemNode's from memnode_worklist. compute new address type and | |
2735 // search the Memory chain for a store with the appropriate type | |
2736 // address type. If a Phi is found, create a new version with | |
605 | 2737 // the appropriate memory slices from each of the Phi inputs. |
0 | 2738 // For stores, process the users as follows: |
2739 // MemNode: push on memnode_worklist | |
2740 // MergeMem: push on mergemem_worklist | |
2741 // Phase 3: Process MergeMem nodes from mergemem_worklist. Walk each memory slice | |
2742 // moving the first node encountered of each instance type to the | |
2743 // the input corresponding to its alias index. | |
2744 // appropriate memory slice. | |
2745 // Phase 4: Update the inputs of non-instance memory Phis and the Memory input of memnodes. | |
2746 // | |
2747 // In the following example, the CheckCastPP nodes are the cast of allocation | |
2748 // results and the allocation of node 29 is unescaped and eligible to be an | |
2749 // instance type. | |
2750 // | |
2751 // We start with: | |
2752 // | |
2753 // 7 Parm #memory | |
2754 // 10 ConI "12" | |
2755 // 19 CheckCastPP "Foo" | |
2756 // 20 AddP _ 19 19 10 Foo+12 alias_index=4 | |
2757 // 29 CheckCastPP "Foo" | |
2758 // 30 AddP _ 29 29 10 Foo+12 alias_index=4 | |
2759 // | |
2760 // 40 StoreP 25 7 20 ... alias_index=4 | |
2761 // 50 StoreP 35 40 30 ... alias_index=4 | |
2762 // 60 StoreP 45 50 20 ... alias_index=4 | |
2763 // 70 LoadP _ 60 30 ... alias_index=4 | |
2764 // 80 Phi 75 50 60 Memory alias_index=4 | |
2765 // 90 LoadP _ 80 30 ... alias_index=4 | |
2766 // 100 LoadP _ 80 20 ... alias_index=4 | |
2767 // | |
2768 // | |
2769 // Phase 1 creates an instance type for node 29 assigning it an instance id of 24 | |
2770 // and creating a new alias index for node 30. This gives: | |
2771 // | |
2772 // 7 Parm #memory | |
2773 // 10 ConI "12" | |
2774 // 19 CheckCastPP "Foo" | |
2775 // 20 AddP _ 19 19 10 Foo+12 alias_index=4 | |
2776 // 29 CheckCastPP "Foo" iid=24 | |
2777 // 30 AddP _ 29 29 10 Foo+12 alias_index=6 iid=24 | |
2778 // | |
2779 // 40 StoreP 25 7 20 ... alias_index=4 | |
2780 // 50 StoreP 35 40 30 ... alias_index=6 | |
2781 // 60 StoreP 45 50 20 ... alias_index=4 | |
2782 // 70 LoadP _ 60 30 ... alias_index=6 | |
2783 // 80 Phi 75 50 60 Memory alias_index=4 | |
2784 // 90 LoadP _ 80 30 ... alias_index=6 | |
2785 // 100 LoadP _ 80 20 ... alias_index=4 | |
2786 // | |
2787 // In phase 2, new memory inputs are computed for the loads and stores, | |
2788 // And a new version of the phi is created. In phase 4, the inputs to | |
2789 // node 80 are updated and then the memory nodes are updated with the | |
2790 // values computed in phase 2. This results in: | |
2791 // | |
2792 // 7 Parm #memory | |
2793 // 10 ConI "12" | |
2794 // 19 CheckCastPP "Foo" | |
2795 // 20 AddP _ 19 19 10 Foo+12 alias_index=4 | |
2796 // 29 CheckCastPP "Foo" iid=24 | |
2797 // 30 AddP _ 29 29 10 Foo+12 alias_index=6 iid=24 | |
2798 // | |
2799 // 40 StoreP 25 7 20 ... alias_index=4 | |
2800 // 50 StoreP 35 7 30 ... alias_index=6 | |
2801 // 60 StoreP 45 40 20 ... alias_index=4 | |
2802 // 70 LoadP _ 50 30 ... alias_index=6 | |
2803 // 80 Phi 75 40 60 Memory alias_index=4 | |
2804 // 120 Phi 75 50 50 Memory alias_index=6 | |
2805 // 90 LoadP _ 120 30 ... alias_index=6 | |
2806 // 100 LoadP _ 80 20 ... alias_index=4 | |
2807 // | |
2808 void ConnectionGraph::split_unique_types(GrowableArray<Node *> &alloc_worklist) { | |
2809 GrowableArray<Node *> memnode_worklist; | |
2810 GrowableArray<PhiNode *> orig_phis; | |
1921 | 2811 PhaseIterGVN *igvn = _igvn; |
0 | 2812 uint new_index_start = (uint) _compile->num_alias_types(); |
1101
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|
2813 Arena* arena = Thread::current()->resource_area(); |
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|
2814 VectorSet visited(arena); |
5948
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|
2815 ideal_nodes.clear(); // Reset for use with set_map/get_map. |
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|
2816 uint unique_old = _compile->unique(); |
65 | 2817 |
2818 // Phase 1: Process possible allocations from alloc_worklist. | |
2819 // Create instance types for the CheckCastPP for allocations where possible. | |
244
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|
2820 // |
524eca34ea76
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|
2821 // (Note: don't forget to change the order of the second AddP node on |
524eca34ea76
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diff
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|
2822 // the alloc_worklist if the order of the worklist processing is changed, |
524eca34ea76
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diff
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|
2823 // see the comment in find_second_addp().) |
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|
2824 // |
0 | 2825 while (alloc_worklist.length() != 0) { |
2826 Node *n = alloc_worklist.pop(); | |
2827 uint ni = n->_idx; | |
2828 if (n->is_Call()) { | |
2829 CallNode *alloc = n->as_Call(); | |
2830 // copy escape information to call node | |
244
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|
2831 PointsToNode* ptn = ptnode_adr(alloc->_idx); |
5948
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5901
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|
2832 PointsToNode::EscapeState es = ptn->escape_state(); |
65 | 2833 // We have an allocation or call which returns a Java object, |
2834 // see if it is unescaped. | |
4058
59e515ee9354
7059047: EA: can't find initializing store with several CheckCastPP
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|
2835 if (es != PointsToNode::NoEscape || !ptn->scalar_replaceable()) |
0 | 2836 continue; |
784
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
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605
diff
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|
2837 // Find CheckCastPP for the allocate or for the return value of a call |
b2934faac289
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|
2838 n = alloc->result_cast(); |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
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605
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|
2839 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
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|
2840 if (alloc->is_Allocate()) { |
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605
diff
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|
2841 // Set the scalar_replaceable flag for allocation |
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605
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|
2842 // so it could be eliminated if it has no uses. |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
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605
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|
2843 alloc->as_Allocate()->_is_scalar_replaceable = true; |
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kvn
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605
diff
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|
2844 } |
10278 | 2845 if (alloc->is_CallStaticJava()) { |
2846 // Set the scalar_replaceable flag for boxing method | |
2847 // so it could be eliminated if it has no uses. | |
2848 alloc->as_CallStaticJava()->_is_scalar_replaceable = true; | |
2849 } | |
784
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
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605
diff
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|
2850 continue; |
39
76256d272075
6667612: (Escape Analysis) disable loop cloning if it has a scalar replaceable allocation
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38
diff
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|
2851 } |
784
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
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605
diff
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|
2852 if (!n->is_CheckCastPP()) { // not unique CheckCastPP. |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
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605
diff
changeset
|
2853 assert(!alloc->is_Allocate(), "allocation should have unique type"); |
65 | 2854 continue; |
784
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
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605
diff
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|
2855 } |
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6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
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605
diff
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|
2856 |
65 | 2857 // The inline code for Object.clone() casts the allocation result to |
247 | 2858 // java.lang.Object and then to the actual type of the allocated |
65 | 2859 // object. Detect this case and use the second cast. |
247 | 2860 // Also detect j.l.reflect.Array.newInstance(jobject, jint) case when |
2861 // the allocation result is cast to java.lang.Object and then | |
2862 // to the actual Array type. | |
65 | 2863 if (alloc->is_Allocate() && n->as_Type()->type() == TypeInstPtr::NOTNULL |
247 | 2864 && (alloc->is_AllocateArray() || |
2865 igvn->type(alloc->in(AllocateNode::KlassNode)) != TypeKlassPtr::OBJECT)) { | |
65 | 2866 Node *cast2 = NULL; |
2867 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { | |
2868 Node *use = n->fast_out(i); | |
2869 if (use->is_CheckCastPP()) { | |
2870 cast2 = use; | |
2871 break; | |
2872 } | |
2873 } | |
2874 if (cast2 != NULL) { | |
2875 n = cast2; | |
2876 } else { | |
784
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents:
605
diff
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|
2877 // 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
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|
2878 // (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
|
2879 // deoptimization without precise type. |
65 | 2880 continue; |
2881 } | |
2882 } | |
20572
87f199a9c1b1
8058825: EA: ConnectionGraph::split_unique_types does incorrect scalar replacement
vlivanov
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20438
diff
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|
2883 |
87f199a9c1b1
8058825: EA: ConnectionGraph::split_unique_types does incorrect scalar replacement
vlivanov
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20438
diff
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|
2884 const TypeOopPtr *t = igvn->type(n)->isa_oopptr(); |
87f199a9c1b1
8058825: EA: ConnectionGraph::split_unique_types does incorrect scalar replacement
vlivanov
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20438
diff
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|
2885 if (t == NULL) |
87f199a9c1b1
8058825: EA: ConnectionGraph::split_unique_types does incorrect scalar replacement
vlivanov
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20438
diff
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|
2886 continue; // not a TypeOopPtr |
87f199a9c1b1
8058825: EA: ConnectionGraph::split_unique_types does incorrect scalar replacement
vlivanov
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20438
diff
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|
2887 if (!t->klass_is_exact()) |
87f199a9c1b1
8058825: EA: ConnectionGraph::split_unique_types does incorrect scalar replacement
vlivanov
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20438
diff
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|
2888 continue; // not an unique type |
87f199a9c1b1
8058825: EA: ConnectionGraph::split_unique_types does incorrect scalar replacement
vlivanov
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20438
diff
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|
2889 |
784
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
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605
diff
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|
2890 if (alloc->is_Allocate()) { |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
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605
diff
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|
2891 // Set the scalar_replaceable flag for allocation |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
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605
diff
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|
2892 // so it could be eliminated. |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
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605
diff
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|
2893 alloc->as_Allocate()->_is_scalar_replaceable = true; |
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6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
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605
diff
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|
2894 } |
10278 | 2895 if (alloc->is_CallStaticJava()) { |
2896 // Set the scalar_replaceable flag for boxing method | |
2897 // so it could be eliminated. | |
2898 alloc->as_CallStaticJava()->_is_scalar_replaceable = true; | |
2899 } | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
diff
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|
2900 set_escape_state(ptnode_adr(n->_idx), es); // CheckCastPP escape state |
247 | 2901 // in order for an object to be scalar-replaceable, it must be: |
65 | 2902 // - a direct allocation (not a call returning an object) |
2903 // - non-escaping | |
2904 // - eligible to be a unique type | |
2905 // - not determined to be ineligible by escape analysis | |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
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|
2906 set_map(alloc, n); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
2907 set_map(n, alloc); |
20572
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|
2908 const TypeOopPtr* tinst = t->cast_to_instance_id(ni); |
0 | 2909 igvn->hash_delete(n); |
2910 igvn->set_type(n, tinst); | |
2911 n->raise_bottom_type(tinst); | |
2912 igvn->hash_insert(n); | |
65 | 2913 record_for_optimizer(n); |
4058
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7059047: EA: can't find initializing store with several CheckCastPP
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|
2914 if (alloc->is_Allocate() && (t->isa_instptr() || t->isa_aryptr())) { |
163 | 2915 |
2916 // First, put on the worklist all Field edges from Connection Graph | |
2917 // which is more accurate then putting immediate users from Ideal Graph. | |
5948
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|
2918 for (EdgeIterator e(ptn); e.has_next(); e.next()) { |
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|
2919 PointsToNode* tgt = e.get(); |
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|
2920 Node* use = tgt->ideal_node(); |
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|
2921 assert(tgt->is_Field() && use->is_AddP(), |
163 | 2922 "only AddP nodes are Field edges in CG"); |
2923 if (use->outcnt() > 0) { // Don't process dead nodes | |
2924 Node* addp2 = find_second_addp(use, use->in(AddPNode::Base)); | |
2925 if (addp2 != NULL) { | |
2926 assert(alloc->is_AllocateArray(),"array allocation was expected"); | |
2927 alloc_worklist.append_if_missing(addp2); | |
2928 } | |
2929 alloc_worklist.append_if_missing(use); | |
2930 } | |
2931 } | |
2932 | |
65 | 2933 // An allocation may have an Initialize which has raw stores. Scan |
2934 // the users of the raw allocation result and push AddP users | |
2935 // on alloc_worklist. | |
2936 Node *raw_result = alloc->proj_out(TypeFunc::Parms); | |
2937 assert (raw_result != NULL, "must have an allocation result"); | |
2938 for (DUIterator_Fast imax, i = raw_result->fast_outs(imax); i < imax; i++) { | |
2939 Node *use = raw_result->fast_out(i); | |
2940 if (use->is_AddP() && use->outcnt() > 0) { // Don't process dead nodes | |
2941 Node* addp2 = find_second_addp(use, raw_result); | |
2942 if (addp2 != NULL) { | |
2943 assert(alloc->is_AllocateArray(),"array allocation was expected"); | |
2944 alloc_worklist.append_if_missing(addp2); | |
2945 } | |
2946 alloc_worklist.append_if_missing(use); | |
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1072
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|
2947 } else if (use->is_MemBar()) { |
65 | 2948 memnode_worklist.append_if_missing(use); |
2949 } | |
2950 } | |
2951 } | |
0 | 2952 } else if (n->is_AddP()) { |
5948
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5901
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|
2953 JavaObjectNode* jobj = unique_java_object(get_addp_base(n)); |
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|
2954 if (jobj == NULL || jobj == phantom_obj) { |
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|
2955 #ifdef ASSERT |
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|
2956 ptnode_adr(get_addp_base(n)->_idx)->dump(); |
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|
2957 ptnode_adr(n->_idx)->dump(); |
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|
2958 assert(jobj != NULL && jobj != phantom_obj, "escaped allocation"); |
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|
2959 #endif |
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|
2960 _compile->record_failure(C2Compiler::retry_no_escape_analysis()); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2961 return; |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2962 } |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2963 Node *base = get_map(jobj->idx()); // CheckCastPP node |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2964 if (!split_AddP(n, base)) continue; // wrong type from dead path |
65 | 2965 } else if (n->is_Phi() || |
2966 n->is_CheckCastPP() || | |
168
7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
164
diff
changeset
|
2967 n->is_EncodeP() || |
7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
164
diff
changeset
|
2968 n->is_DecodeN() || |
65 | 2969 (n->is_ConstraintCast() && n->Opcode() == Op_CastPP)) { |
0 | 2970 if (visited.test_set(n->_idx)) { |
2971 assert(n->is_Phi(), "loops only through Phi's"); | |
2972 continue; // already processed | |
2973 } | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2974 JavaObjectNode* jobj = unique_java_object(n); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2975 if (jobj == NULL || jobj == phantom_obj) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2976 #ifdef ASSERT |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2977 ptnode_adr(n->_idx)->dump(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2978 assert(jobj != NULL && jobj != phantom_obj, "escaped allocation"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2979 #endif |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2980 _compile->record_failure(C2Compiler::retry_no_escape_analysis()); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2981 return; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2982 } else { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2983 Node *val = get_map(jobj->idx()); // CheckCastPP node |
0 | 2984 TypeNode *tn = n->as_Type(); |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2985 const TypeOopPtr* tinst = igvn->type(val)->isa_oopptr(); |
223 | 2986 assert(tinst != NULL && tinst->is_known_instance() && |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2987 tinst->instance_id() == jobj->idx() , "instance type expected."); |
163 | 2988 |
2989 const Type *tn_type = igvn->type(tn); | |
223 | 2990 const TypeOopPtr *tn_t; |
2991 if (tn_type->isa_narrowoop()) { | |
2992 tn_t = tn_type->make_ptr()->isa_oopptr(); | |
2993 } else { | |
2994 tn_t = tn_type->isa_oopptr(); | |
2995 } | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2996 if (tn_t != NULL && tinst->klass()->is_subtype_of(tn_t->klass())) { |
163 | 2997 if (tn_type->isa_narrowoop()) { |
2998 tn_type = tinst->make_narrowoop(); | |
2999 } else { | |
3000 tn_type = tinst; | |
3001 } | |
0 | 3002 igvn->hash_delete(tn); |
163 | 3003 igvn->set_type(tn, tn_type); |
3004 tn->set_type(tn_type); | |
0 | 3005 igvn->hash_insert(tn); |
65 | 3006 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
|
3007 } else { |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3008 assert(tn_type == TypePtr::NULL_PTR || |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3009 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
|
3010 "unexpected type"); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3011 continue; // Skip dead path with different type |
0 | 3012 } |
3013 } | |
3014 } else { | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3015 debug_only(n->dump();) |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3016 assert(false, "EA: unexpected node"); |
0 | 3017 continue; |
3018 } | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3019 // push allocation's users on appropriate worklist |
0 | 3020 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
3021 Node *use = n->fast_out(i); | |
3022 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
|
3023 // Load/store to instance's field |
65 | 3024 memnode_worklist.append_if_missing(use); |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3025 } else if (use->is_MemBar()) { |
10278 | 3026 if (use->in(TypeFunc::Memory) == n) { // Ignore precedent edge |
3027 memnode_worklist.append_if_missing(use); | |
3028 } | |
65 | 3029 } else if (use->is_AddP() && use->outcnt() > 0) { // No dead nodes |
3030 Node* addp2 = find_second_addp(use, n); | |
3031 if (addp2 != NULL) { | |
3032 alloc_worklist.append_if_missing(addp2); | |
3033 } | |
3034 alloc_worklist.append_if_missing(use); | |
3035 } else if (use->is_Phi() || | |
3036 use->is_CheckCastPP() || | |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
3037 use->is_EncodeNarrowPtr() || |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
3038 use->is_DecodeNarrowPtr() || |
65 | 3039 (use->is_ConstraintCast() && use->Opcode() == Op_CastPP)) { |
3040 alloc_worklist.append_if_missing(use); | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3041 #ifdef ASSERT |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3042 } else if (use->is_Mem()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3043 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
|
3044 } else if (use->is_MergeMem()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3045 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
|
3046 } else if (use->is_SafePoint()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3047 // 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
|
3048 // (through CheckCastPP nodes) even for debug info. |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3049 Node* m = use->in(TypeFunc::Memory); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3050 if (m->is_MergeMem()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3051 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
|
3052 } |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3053 } else if (use->Opcode() == Op_EncodeISOArray) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3054 if (use->in(MemNode::Memory) == n || use->in(3) == n) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3055 // EncodeISOArray overwrites destination array |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3056 memnode_worklist.append_if_missing(use); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3057 } |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3058 } else { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3059 uint op = use->Opcode(); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3060 if (!(op == Op_CmpP || op == Op_Conv2B || |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3061 op == Op_CastP2X || op == Op_StoreCM || |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3062 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
|
3063 op == Op_StrEquals || op == Op_StrIndexOf)) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3064 n->dump(); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3065 use->dump(); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3066 assert(false, "EA: missing allocation reference path"); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3067 } |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3068 #endif |
0 | 3069 } |
3070 } | |
3071 | |
3072 } | |
65 | 3073 // New alias types were created in split_AddP(). |
0 | 3074 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
|
3075 assert(unique_old == _compile->unique(), "there should be no new ideal nodes after Phase 1"); |
0 | 3076 |
3077 // Phase 2: Process MemNode's from memnode_worklist. compute new address type and | |
3078 // compute new values for Memory inputs (the Memory inputs are not | |
3079 // actually updated until phase 4.) | |
3080 if (memnode_worklist.length() == 0) | |
3081 return; // nothing to do | |
3082 while (memnode_worklist.length() != 0) { | |
3083 Node *n = memnode_worklist.pop(); | |
65 | 3084 if (visited.test_set(n->_idx)) |
3085 continue; | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3086 if (n->is_Phi() || n->is_ClearArray()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3087 // 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
|
3088 } 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
|
3089 // 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
|
3090 n = n->as_MemBar()->proj_out(TypeFunc::Memory); |
65 | 3091 if (n == NULL) |
0 | 3092 continue; |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3093 } else if (n->Opcode() == Op_EncodeISOArray) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3094 // get the memory projection |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3095 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3096 Node *use = n->fast_out(i); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3097 if (use->Opcode() == Op_SCMemProj) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3098 n = use; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3099 break; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3100 } |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3101 } |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3102 assert(n->Opcode() == Op_SCMemProj, "memory projection required"); |
0 | 3103 } else { |
3104 assert(n->is_Mem(), "memory node required."); | |
3105 Node *addr = n->in(MemNode::Address); | |
3106 const Type *addr_t = igvn->type(addr); | |
3107 if (addr_t == Type::TOP) | |
3108 continue; | |
3109 assert (addr_t->isa_ptr() != NULL, "pointer type required."); | |
3110 int alias_idx = _compile->get_alias_index(addr_t->is_ptr()); | |
65 | 3111 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
|
3112 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
|
3113 if (_compile->failing()) { |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
3114 return; |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
3115 } |
65 | 3116 if (mem != n->in(MemNode::Memory)) { |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
3117 // 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
|
3118 // 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
|
3119 set_map(n, mem); |
65 | 3120 } |
0 | 3121 if (n->is_Load()) { |
3122 continue; // don't push users | |
3123 } else if (n->is_LoadStore()) { | |
3124 // get the memory projection | |
3125 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { | |
3126 Node *use = n->fast_out(i); | |
3127 if (use->Opcode() == Op_SCMemProj) { | |
3128 n = use; | |
3129 break; | |
3130 } | |
3131 } | |
3132 assert(n->Opcode() == Op_SCMemProj, "memory projection required"); | |
3133 } | |
3134 } | |
3135 // push user on appropriate worklist | |
3136 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { | |
3137 Node *use = n->fast_out(i); | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3138 if (use->is_Phi() || use->is_ClearArray()) { |
65 | 3139 memnode_worklist.append_if_missing(use); |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3140 } 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
|
3141 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
|
3142 continue; |
65 | 3143 memnode_worklist.append_if_missing(use); |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3144 } else if (use->is_MemBar()) { |
10278 | 3145 if (use->in(TypeFunc::Memory) == n) { // Ignore precedent edge |
3146 memnode_worklist.append_if_missing(use); | |
3147 } | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3148 #ifdef ASSERT |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3149 } else if(use->is_Mem()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
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3150 assert(use->in(MemNode::Memory) != n, "EA: missing memory path"); |
0 | 3151 } else if (use->is_MergeMem()) { |
1100
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3152 assert(_mergemem_worklist.contains(use->as_MergeMem()), "EA: missing MergeMem node in the worklist"); |
7637
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|
3153 } else if (use->Opcode() == Op_EncodeISOArray) { |
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3154 if (use->in(MemNode::Memory) == n || use->in(3) == n) { |
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|
3155 // EncodeISOArray overwrites destination array |
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|
3156 memnode_worklist.append_if_missing(use); |
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|
3157 } |
1100
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|
3158 } else { |
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|
3159 uint op = use->Opcode(); |
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|
3160 if (!(op == Op_StoreCM || |
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|
3161 (op == Op_CallLeaf && use->as_CallLeaf()->_name != NULL && |
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|
3162 strcmp(use->as_CallLeaf()->_name, "g1_wb_pre") == 0) || |
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|
3163 op == Op_AryEq || op == Op_StrComp || |
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|
3164 op == Op_StrEquals || op == Op_StrIndexOf)) { |
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|
3165 n->dump(); |
f96a1a986f7b
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|
3166 use->dump(); |
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|
3167 assert(false, "EA: missing memory path"); |
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|
3168 } |
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|
3169 #endif |
0 | 3170 } |
3171 } | |
3172 } | |
3173 | |
65 | 3174 // Phase 3: Process MergeMem nodes from mergemem_worklist. |
1100
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|
3175 // Walk each memory slice moving the first node encountered of each |
65 | 3176 // instance type to the the input corresponding to its alias index. |
1100
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|
3177 uint length = _mergemem_worklist.length(); |
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|
3178 for( uint next = 0; next < length; ++next ) { |
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|
3179 MergeMemNode* nmm = _mergemem_worklist.at(next); |
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3180 assert(!visited.test_set(nmm->_idx), "should not be visited before"); |
0 | 3181 // Note: we don't want to use MergeMemStream here because we only want to |
1100
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|
3182 // scan inputs which exist at the start, not ones we add during processing. |
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3183 // Note 2: MergeMem may already contains instance memory slices added |
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3184 // during find_inst_mem() call when memory nodes were processed above. |
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|
3185 igvn->hash_delete(nmm); |
23431
3f47111161d7
8134031: Incorrect JIT compilation of complex code with inlining and escape analysis
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|
3186 uint nslices = MIN2(nmm->req(), new_index_start); |
0 | 3187 for (uint i = Compile::AliasIdxRaw+1; i < nslices; i++) { |
65 | 3188 Node* mem = nmm->in(i); |
3189 Node* cur = NULL; | |
0 | 3190 if (mem == NULL || mem->is_top()) |
3191 continue; | |
1101
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|
3192 // First, update mergemem by moving memory nodes to corresponding slices |
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|
3193 // if their type became more precise since this mergemem was created. |
0 | 3194 while (mem->is_Mem()) { |
3195 const Type *at = igvn->type(mem->in(MemNode::Address)); | |
3196 if (at != Type::TOP) { | |
3197 assert (at->isa_ptr() != NULL, "pointer type required."); | |
3198 uint idx = (uint)_compile->get_alias_index(at->is_ptr()); | |
3199 if (idx == i) { | |
3200 if (cur == NULL) | |
3201 cur = mem; | |
3202 } else { | |
3203 if (idx >= nmm->req() || nmm->is_empty_memory(nmm->in(idx))) { | |
3204 nmm->set_memory_at(idx, mem); | |
3205 } | |
3206 } | |
3207 } | |
3208 mem = mem->in(MemNode::Memory); | |
3209 } | |
3210 nmm->set_memory_at(i, (cur != NULL) ? cur : mem); | |
65 | 3211 // Find any instance of the current type if we haven't encountered |
1101
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|
3212 // already a memory slice of the instance along the memory chain. |
65 | 3213 for (uint ni = new_index_start; ni < new_index_end; ni++) { |
3214 if((uint)_compile->get_general_index(ni) == i) { | |
3215 Node *m = (ni >= nmm->req()) ? nmm->empty_memory() : nmm->in(ni); | |
3216 if (nmm->is_empty_memory(m)) { | |
5948
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|
3217 Node* result = find_inst_mem(mem, ni, orig_phis); |
65 | 3218 if (_compile->failing()) { |
3219 return; | |
3220 } | |
3221 nmm->set_memory_at(ni, result); | |
3222 } | |
3223 } | |
3224 } | |
3225 } | |
3226 // Find the rest of instances values | |
3227 for (uint ni = new_index_start; ni < new_index_end; ni++) { | |
1101
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|
3228 const TypeOopPtr *tinst = _compile->get_adr_type(ni)->isa_oopptr(); |
65 | 3229 Node* result = step_through_mergemem(nmm, ni, tinst); |
3230 if (result == nmm->base_memory()) { | |
3231 // Didn't find instance memory, search through general slice recursively. | |
1101
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|
3232 result = nmm->memory_at(_compile->get_general_index(ni)); |
5948
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|
3233 result = find_inst_mem(result, ni, orig_phis); |
65 | 3234 if (_compile->failing()) { |
3235 return; | |
3236 } | |
3237 nmm->set_memory_at(ni, result); | |
3238 } | |
3239 } | |
3240 igvn->hash_insert(nmm); | |
3241 record_for_optimizer(nmm); | |
0 | 3242 } |
3243 | |
65 | 3244 // Phase 4: Update the inputs of non-instance memory Phis and |
3245 // the Memory input of memnodes | |
0 | 3246 // First update the inputs of any non-instance Phi's from |
3247 // which we split out an instance Phi. Note we don't have | |
3248 // to recursively process Phi's encounted on the input memory | |
3249 // chains as is done in split_memory_phi() since they will | |
3250 // also be processed here. | |
247 | 3251 for (int j = 0; j < orig_phis.length(); j++) { |
3252 PhiNode *phi = orig_phis.at(j); | |
0 | 3253 int alias_idx = _compile->get_alias_index(phi->adr_type()); |
3254 igvn->hash_delete(phi); | |
3255 for (uint i = 1; i < phi->req(); i++) { | |
3256 Node *mem = phi->in(i); | |
5948
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|
3257 Node *new_mem = find_inst_mem(mem, alias_idx, orig_phis); |
65 | 3258 if (_compile->failing()) { |
3259 return; | |
3260 } | |
0 | 3261 if (mem != new_mem) { |
3262 phi->set_req(i, new_mem); | |
3263 } | |
3264 } | |
3265 igvn->hash_insert(phi); | |
3266 record_for_optimizer(phi); | |
3267 } | |
3268 | |
3269 // Update the memory inputs of MemNodes with the value we computed | |
1101
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|
3270 // in Phase 2 and move stores memory users to corresponding memory slices. |
3278
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|
3271 // Disable memory split verification code until the fix for 6984348. |
66b0e2371912
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|
3272 // Currently it produces false negative results since it does not cover all cases. |
66b0e2371912
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|
3273 #if 0 // ifdef ASSERT |
2249 | 3274 visited.Reset(); |
1101
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|
3275 Node_Stack old_mems(arena, _compile->unique() >> 2); |
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diff
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|
3276 #endif |
5948
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5901
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|
3277 for (uint i = 0; i < ideal_nodes.size(); i++) { |
ee138854b3a6
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|
3278 Node* n = ideal_nodes.at(i); |
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|
3279 Node* nmem = get_map(n->_idx); |
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|
3280 assert(nmem != NULL, "sanity"); |
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diff
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|
3281 if (n->is_Mem()) { |
3278
66b0e2371912
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|
3282 #if 0 // ifdef ASSERT |
5948
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diff
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|
3283 Node* old_mem = n->in(MemNode::Memory); |
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|
3284 if (!visited.test_set(old_mem->_idx)) { |
ee138854b3a6
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|
3285 old_mems.push(old_mem, old_mem->outcnt()); |
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|
3286 } |
1101
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kvn
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1100
diff
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|
3287 #endif |
5948
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5901
diff
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|
3288 assert(n->in(MemNode::Memory) != nmem, "sanity"); |
ee138854b3a6
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|
3289 if (!n->is_Load()) { |
ee138854b3a6
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diff
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|
3290 // Move memory users of a store first. |
ee138854b3a6
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|
3291 move_inst_mem(n, orig_phis); |
0 | 3292 } |
5948
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|
3293 // Now update memory input |
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|
3294 igvn->hash_delete(n); |
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|
3295 n->set_req(MemNode::Memory, nmem); |
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|
3296 igvn->hash_insert(n); |
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|
3297 record_for_optimizer(n); |
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|
3298 } else { |
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|
3299 assert(n->is_Allocate() || n->is_CheckCastPP() || |
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|
3300 n->is_AddP() || n->is_Phi(), "unknown node used for set_map()"); |
0 | 3301 } |
3302 } | |
3278
66b0e2371912
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|
3303 #if 0 // ifdef ASSERT |
1101
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|
3304 // Verify that memory was split correctly |
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|
3305 while (old_mems.is_nonempty()) { |
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|
3306 Node* old_mem = old_mems.node(); |
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|
3307 uint old_cnt = old_mems.index(); |
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|
3308 old_mems.pop(); |
3278
66b0e2371912
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|
3309 assert(old_cnt == old_mem->outcnt(), "old mem could be lost"); |
1101
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|
3310 } |
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|
3311 #endif |
0 | 3312 } |
3313 | |
5948
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|
3314 #ifndef PRODUCT |
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|
3315 static const char *node_type_names[] = { |
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|
3316 "UnknownType", |
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|
3317 "JavaObject", |
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|
3318 "LocalVar", |
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|
3319 "Field", |
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|
3320 "Arraycopy" |
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|
3321 }; |
4937
73df3733f2eb
7129284: +DoEscapeAnalysis regression w/ early build of 7u4 (HotSpot 23) on Linux
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4777
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|
3322 |
5948
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|
3323 static const char *esc_names[] = { |
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|
3324 "UnknownEscape", |
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|
3325 "NoEscape", |
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|
3326 "ArgEscape", |
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5901
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|
3327 "GlobalEscape" |
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|
3328 }; |
0 | 3329 |
5948
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|
3330 void PointsToNode::dump(bool print_state) const { |
ee138854b3a6
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5901
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|
3331 NodeType nt = node_type(); |
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|
3332 tty->print("%s ", node_type_names[(int) nt]); |
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3333 if (print_state) { |
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3334 EscapeState es = escape_state(); |
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3335 EscapeState fields_es = fields_escape_state(); |
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3336 tty->print("%s(%s) ", esc_names[(int)es], esc_names[(int)fields_es]); |
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3337 if (nt == PointsToNode::JavaObject && !this->scalar_replaceable()) |
6944
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3338 tty->print("NSR "); |
4113 | 3339 } |
5948
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3340 if (is_Field()) { |
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3341 FieldNode* f = (FieldNode*)this; |
6944
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3342 if (f->is_oop()) |
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3343 tty->print("oop "); |
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3344 if (f->offset() > 0) |
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3345 tty->print("+%d ", f->offset()); |
5948
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3346 tty->print("("); |
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3347 for (BaseIterator i(f); i.has_next(); i.next()) { |
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3348 PointsToNode* b = i.get(); |
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3349 tty->print(" %d%s", b->idx(),(b->is_JavaObject() ? "P" : "")); |
4763
1dc233a8c7fe
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3350 } |
5948
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3351 tty->print(" )"); |
0 | 3352 } |
5948
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3353 tty->print("["); |
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3354 for (EdgeIterator i(this); i.has_next(); i.next()) { |
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3355 PointsToNode* e = i.get(); |
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3356 tty->print(" %d%s%s", e->idx(),(e->is_JavaObject() ? "P" : (e->is_Field() ? "F" : "")), e->is_Arraycopy() ? "cp" : ""); |
1100
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3357 } |
5948
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3358 tty->print(" ["); |
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3359 for (UseIterator i(this); i.has_next(); i.next()) { |
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3360 PointsToNode* u = i.get(); |
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3361 bool is_base = false; |
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3362 if (PointsToNode::is_base_use(u)) { |
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3363 is_base = true; |
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3364 u = PointsToNode::get_use_node(u)->as_Field(); |
4058
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3365 } |
5948
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3366 tty->print(" %d%s%s", u->idx(), is_base ? "b" : "", u->is_Arraycopy() ? "cp" : ""); |
4113 | 3367 } |
5948
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3368 tty->print(" ]] "); |
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3369 if (_node == NULL) |
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3370 tty->print_cr("<null>"); |
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3371 else |
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3372 _node->dump(); |
4113 | 3373 } |
3374 | |
5948
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3375 void ConnectionGraph::dump(GrowableArray<PointsToNode*>& ptnodes_worklist) { |
0 | 3376 bool first = true; |
5948
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3377 int ptnodes_length = ptnodes_worklist.length(); |
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3378 for (int i = 0; i < ptnodes_length; i++) { |
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3379 PointsToNode *ptn = ptnodes_worklist.at(i); |
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3380 if (ptn == NULL || !ptn->is_JavaObject()) |
0 | 3381 continue; |
5948
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3382 PointsToNode::EscapeState es = ptn->escape_state(); |
10278 | 3383 if ((es != PointsToNode::NoEscape) && !Verbose) { |
3384 continue; | |
3385 } | |
3386 Node* n = ptn->ideal_node(); | |
3387 if (n->is_Allocate() || (n->is_CallStaticJava() && | |
3388 n->as_CallStaticJava()->is_boxing_method())) { | |
65 | 3389 if (first) { |
3390 tty->cr(); | |
3391 tty->print("======== Connection graph for "); | |
244
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3392 _compile->method()->print_short_name(); |
65 | 3393 tty->cr(); |
3394 first = false; | |
3395 } | |
3396 ptn->dump(); | |
5948
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3397 // Print all locals and fields which reference this allocation |
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3398 for (UseIterator j(ptn); j.has_next(); j.next()) { |
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3399 PointsToNode* use = j.get(); |
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3400 if (use->is_LocalVar()) { |
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3401 use->dump(Verbose); |
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3402 } else if (Verbose) { |
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3403 use->dump(); |
65 | 3404 } |
3405 } | |
3406 tty->cr(); | |
0 | 3407 } |
3408 } | |
3409 } | |
3410 #endif |