Mercurial > hg > graal-compiler
annotate src/share/vm/opto/escape.cpp @ 12816:2720ab7a0d70
Merge
author | ccheung |
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date | Fri, 04 Oct 2013 21:00:43 -0700 |
parents | b800986664f4 |
children | 6171eb9da4fd |
rev | line source |
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0 | 1 /* |
10405 | 2 * Copyright (c) 2005, 2013, 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 _collecting(true), |
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41 _verify(false), |
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42 _compile(C), |
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43 _igvn(igvn), |
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44 _node_map(C->comp_arena()) { |
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45 // Add unknown java object. |
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46 add_java_object(C->top(), PointsToNode::GlobalEscape); |
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47 phantom_obj = ptnode_adr(C->top()->_idx)->as_JavaObject(); |
253
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48 // Add ConP(#NULL) and ConN(#NULL) nodes. |
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49 Node* oop_null = igvn->zerocon(T_OBJECT); |
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50 assert(oop_null->_idx < nodes_size(), "should be created already"); |
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51 add_java_object(oop_null, PointsToNode::NoEscape); |
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52 null_obj = ptnode_adr(oop_null->_idx)->as_JavaObject(); |
253
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53 if (UseCompressedOops) { |
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54 Node* noop_null = igvn->zerocon(T_NARROWOOP); |
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55 assert(noop_null->_idx < nodes_size(), "should be created already"); |
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56 map_ideal_node(noop_null, null_obj); |
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57 } |
4113 | 58 _pcmp_neq = NULL; // Should be initialized |
59 _pcmp_eq = NULL; | |
0 | 60 } |
61 | |
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62 bool ConnectionGraph::has_candidates(Compile *C) { |
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63 // EA brings benefits only when the code has allocations and/or locks which |
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64 // are represented by ideal Macro nodes. |
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65 int cnt = C->macro_count(); |
10278 | 66 for (int i = 0; i < cnt; i++) { |
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67 Node *n = C->macro_node(i); |
10278 | 68 if (n->is_Allocate()) |
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69 return true; |
10278 | 70 if (n->is_Lock()) { |
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71 Node* obj = n->as_Lock()->obj_node()->uncast(); |
10278 | 72 if (!(obj->is_Parm() || obj->is_Con())) |
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73 return true; |
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74 } |
10278 | 75 if (n->is_CallStaticJava() && |
76 n->as_CallStaticJava()->is_boxing_method()) { | |
77 return true; | |
78 } | |
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79 } |
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80 return false; |
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81 } |
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82 |
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83 void ConnectionGraph::do_analysis(Compile *C, PhaseIterGVN *igvn) { |
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84 Compile::TracePhase t2("escapeAnalysis", &Phase::_t_escapeAnalysis, true); |
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85 ResourceMark rm; |
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86 |
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87 // Add ConP#NULL and ConN#NULL nodes before ConnectionGraph construction |
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88 // to create space for them in ConnectionGraph::_nodes[]. |
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89 Node* oop_null = igvn->zerocon(T_OBJECT); |
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90 Node* noop_null = igvn->zerocon(T_NARROWOOP); |
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91 ConnectionGraph* congraph = new(C->comp_arena()) ConnectionGraph(C, igvn); |
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92 // Perform escape analysis |
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93 if (congraph->compute_escape()) { |
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94 // There are non escaping objects. |
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95 C->set_congraph(congraph); |
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96 } |
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97 // Cleanup. |
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98 if (oop_null->outcnt() == 0) |
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99 igvn->hash_delete(oop_null); |
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100 if (noop_null->outcnt() == 0) |
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101 igvn->hash_delete(noop_null); |
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102 } |
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103 |
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104 bool ConnectionGraph::compute_escape() { |
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105 Compile* C = _compile; |
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106 PhaseGVN* igvn = _igvn; |
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107 |
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108 // Worklists used by EA. |
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109 Unique_Node_List delayed_worklist; |
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110 GrowableArray<Node*> alloc_worklist; |
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111 GrowableArray<Node*> ptr_cmp_worklist; |
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112 GrowableArray<Node*> storestore_worklist; |
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113 GrowableArray<PointsToNode*> ptnodes_worklist; |
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114 GrowableArray<JavaObjectNode*> java_objects_worklist; |
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115 GrowableArray<JavaObjectNode*> non_escaped_worklist; |
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116 GrowableArray<FieldNode*> oop_fields_worklist; |
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117 DEBUG_ONLY( GrowableArray<Node*> addp_worklist; ) |
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118 |
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119 { Compile::TracePhase t3("connectionGraph", &Phase::_t_connectionGraph, true); |
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120 |
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121 // 1. Populate Connection Graph (CG) with PointsTo nodes. |
10278 | 122 ideal_nodes.map(C->live_nodes(), NULL); // preallocate space |
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123 // Initialize worklist |
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124 if (C->root() != NULL) { |
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125 ideal_nodes.push(C->root()); |
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126 } |
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127 for( uint next = 0; next < ideal_nodes.size(); ++next ) { |
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128 Node* n = ideal_nodes.at(next); |
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129 // Create PointsTo nodes and add them to Connection Graph. Called |
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130 // only once per ideal node since ideal_nodes is Unique_Node list. |
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131 add_node_to_connection_graph(n, &delayed_worklist); |
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132 PointsToNode* ptn = ptnode_adr(n->_idx); |
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133 if (ptn != NULL) { |
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134 ptnodes_worklist.append(ptn); |
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135 if (ptn->is_JavaObject()) { |
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136 java_objects_worklist.append(ptn->as_JavaObject()); |
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137 if ((n->is_Allocate() || n->is_CallStaticJava()) && |
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138 (ptn->escape_state() < PointsToNode::GlobalEscape)) { |
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139 // Only allocations and java static calls results are interesting. |
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140 non_escaped_worklist.append(ptn->as_JavaObject()); |
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141 } |
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142 } else if (ptn->is_Field() && ptn->as_Field()->is_oop()) { |
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143 oop_fields_worklist.append(ptn->as_Field()); |
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144 } |
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145 } |
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146 if (n->is_MergeMem()) { |
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147 // Collect all MergeMem nodes to add memory slices for |
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148 // scalar replaceable objects in split_unique_types(). |
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149 _mergemem_worklist.append(n->as_MergeMem()); |
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150 } else if (OptimizePtrCompare && n->is_Cmp() && |
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151 (n->Opcode() == Op_CmpP || n->Opcode() == Op_CmpN)) { |
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152 // Collect compare pointers nodes. |
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153 ptr_cmp_worklist.append(n); |
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154 } else if (n->is_MemBarStoreStore()) { |
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155 // Collect all MemBarStoreStore nodes so that depending on the |
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156 // escape status of the associated Allocate node some of them |
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157 // may be eliminated. |
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158 storestore_worklist.append(n); |
10278 | 159 } else if (n->is_MemBar() && (n->Opcode() == Op_MemBarRelease) && |
160 (n->req() > MemBarNode::Precedent)) { | |
161 record_for_optimizer(n); | |
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162 #ifdef ASSERT |
10278 | 163 } else if (n->is_AddP()) { |
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164 // Collect address nodes for graph verification. |
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165 addp_worklist.append(n); |
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166 #endif |
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167 } |
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168 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
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169 Node* m = n->fast_out(i); // Get user |
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170 ideal_nodes.push(m); |
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171 } |
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172 } |
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173 if (non_escaped_worklist.length() == 0) { |
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174 _collecting = false; |
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175 return false; // Nothing to do. |
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176 } |
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177 // Add final simple edges to graph. |
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178 while(delayed_worklist.size() > 0) { |
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179 Node* n = delayed_worklist.pop(); |
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180 add_final_edges(n); |
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181 } |
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182 int ptnodes_length = ptnodes_worklist.length(); |
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183 |
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184 #ifdef ASSERT |
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185 if (VerifyConnectionGraph) { |
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186 // Verify that no new simple edges could be created and all |
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187 // local vars has edges. |
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188 _verify = true; |
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189 for (int next = 0; next < ptnodes_length; ++next) { |
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190 PointsToNode* ptn = ptnodes_worklist.at(next); |
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191 add_final_edges(ptn->ideal_node()); |
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192 if (ptn->is_LocalVar() && ptn->edge_count() == 0) { |
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193 ptn->dump(); |
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194 assert(ptn->as_LocalVar()->edge_count() > 0, "sanity"); |
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195 } |
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196 } |
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197 _verify = false; |
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198 } |
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199 #endif |
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200 |
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201 // 2. Finish Graph construction by propagating references to all |
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202 // java objects through graph. |
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203 if (!complete_connection_graph(ptnodes_worklist, non_escaped_worklist, |
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204 java_objects_worklist, oop_fields_worklist)) { |
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205 // All objects escaped or hit time or iterations limits. |
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206 _collecting = false; |
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207 return false; |
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208 } |
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209 |
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210 // 3. Adjust scalar_replaceable state of nonescaping objects and push |
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211 // scalar replaceable allocations on alloc_worklist for processing |
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212 // in split_unique_types(). |
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213 int non_escaped_length = non_escaped_worklist.length(); |
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214 for (int next = 0; next < non_escaped_length; next++) { |
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215 JavaObjectNode* ptn = non_escaped_worklist.at(next); |
10278 | 216 bool noescape = (ptn->escape_state() == PointsToNode::NoEscape); |
217 Node* n = ptn->ideal_node(); | |
218 if (n->is_Allocate()) { | |
219 n->as_Allocate()->_is_non_escaping = noescape; | |
220 } | |
221 if (n->is_CallStaticJava()) { | |
222 n->as_CallStaticJava()->_is_non_escaping = noescape; | |
223 } | |
224 if (noescape && ptn->scalar_replaceable()) { | |
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225 adjust_scalar_replaceable_state(ptn); |
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226 if (ptn->scalar_replaceable()) { |
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227 alloc_worklist.append(ptn->ideal_node()); |
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228 } |
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229 } |
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230 } |
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231 |
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232 #ifdef ASSERT |
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233 if (VerifyConnectionGraph) { |
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234 // Verify that graph is complete - no new edges could be added or needed. |
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235 verify_connection_graph(ptnodes_worklist, non_escaped_worklist, |
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236 java_objects_worklist, addp_worklist); |
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237 } |
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238 assert(C->unique() == nodes_size(), "no new ideal nodes should be added during ConnectionGraph build"); |
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239 assert(null_obj->escape_state() == PointsToNode::NoEscape && |
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240 null_obj->edge_count() == 0 && |
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241 !null_obj->arraycopy_src() && |
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242 !null_obj->arraycopy_dst(), "sanity"); |
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243 #endif |
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244 |
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245 _collecting = false; |
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246 |
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247 } // TracePhase t3("connectionGraph") |
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248 |
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249 // 4. Optimize ideal graph based on EA information. |
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250 bool has_non_escaping_obj = (non_escaped_worklist.length() > 0); |
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251 if (has_non_escaping_obj) { |
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252 optimize_ideal_graph(ptr_cmp_worklist, storestore_worklist); |
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253 } |
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254 |
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255 #ifndef PRODUCT |
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256 if (PrintEscapeAnalysis) { |
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257 dump(ptnodes_worklist); // Dump ConnectionGraph |
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258 } |
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259 #endif |
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260 |
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261 bool has_scalar_replaceable_candidates = (alloc_worklist.length() > 0); |
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262 #ifdef ASSERT |
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263 if (VerifyConnectionGraph) { |
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264 int alloc_length = alloc_worklist.length(); |
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265 for (int next = 0; next < alloc_length; ++next) { |
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266 Node* n = alloc_worklist.at(next); |
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267 PointsToNode* ptn = ptnode_adr(n->_idx); |
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268 assert(ptn->escape_state() == PointsToNode::NoEscape && ptn->scalar_replaceable(), "sanity"); |
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269 } |
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270 } |
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271 #endif |
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272 |
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273 // 5. Separate memory graph for scalar replaceable allcations. |
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274 if (has_scalar_replaceable_candidates && |
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275 C->AliasLevel() >= 3 && EliminateAllocations) { |
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276 // Now use the escape information to create unique types for |
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277 // scalar replaceable objects. |
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278 split_unique_types(alloc_worklist); |
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279 if (C->failing()) return false; |
10405 | 280 C->print_method(PHASE_AFTER_EA, 2); |
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281 |
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282 #ifdef ASSERT |
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283 } else if (Verbose && (PrintEscapeAnalysis || PrintEliminateAllocations)) { |
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284 tty->print("=== No allocations eliminated for "); |
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285 C->method()->print_short_name(); |
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286 if(!EliminateAllocations) { |
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287 tty->print(" since EliminateAllocations is off ==="); |
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288 } else if(!has_scalar_replaceable_candidates) { |
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289 tty->print(" since there are no scalar replaceable candidates ==="); |
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290 } else if(C->AliasLevel() < 3) { |
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291 tty->print(" since AliasLevel < 3 ==="); |
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292 } |
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293 tty->cr(); |
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294 #endif |
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295 } |
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296 return has_non_escaping_obj; |
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297 } |
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298 |
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299 // Utility function for nodes that load an object |
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300 void ConnectionGraph::add_objload_to_connection_graph(Node *n, Unique_Node_List *delayed_worklist) { |
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301 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because |
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302 // ThreadLocal has RawPtr type. |
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303 const Type* t = _igvn->type(n); |
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304 if (t->make_ptr() != NULL) { |
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305 Node* adr = n->in(MemNode::Address); |
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306 #ifdef ASSERT |
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307 if (!adr->is_AddP()) { |
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308 assert(_igvn->type(adr)->isa_rawptr(), "sanity"); |
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309 } else { |
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310 assert((ptnode_adr(adr->_idx) == NULL || |
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311 ptnode_adr(adr->_idx)->as_Field()->is_oop()), "sanity"); |
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312 } |
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313 #endif |
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314 add_local_var_and_edge(n, PointsToNode::NoEscape, |
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315 adr, delayed_worklist); |
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316 } |
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317 } |
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318 |
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319 // Populate Connection Graph with PointsTo nodes and create simple |
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320 // connection graph edges. |
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321 void ConnectionGraph::add_node_to_connection_graph(Node *n, Unique_Node_List *delayed_worklist) { |
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322 assert(!_verify, "this method sould not be called for verification"); |
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323 PhaseGVN* igvn = _igvn; |
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324 uint n_idx = n->_idx; |
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325 PointsToNode* n_ptn = ptnode_adr(n_idx); |
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326 if (n_ptn != NULL) |
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327 return; // No need to redefine PointsTo node during first iteration. |
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328 |
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329 if (n->is_Call()) { |
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330 // Arguments to allocation and locking don't escape. |
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331 if (n->is_AbstractLock()) { |
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332 // Put Lock and Unlock nodes on IGVN worklist to process them during |
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333 // first IGVN optimization when escape information is still available. |
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334 record_for_optimizer(n); |
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335 } else if (n->is_Allocate()) { |
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336 add_call_node(n->as_Call()); |
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337 record_for_optimizer(n); |
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338 } else { |
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339 if (n->is_CallStaticJava()) { |
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340 const char* name = n->as_CallStaticJava()->_name; |
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341 if (name != NULL && strcmp(name, "uncommon_trap") == 0) |
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342 return; // Skip uncommon traps |
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343 } |
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344 // Don't mark as processed since call's arguments have to be processed. |
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345 delayed_worklist->push(n); |
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346 // Check if a call returns an object. |
10278 | 347 if ((n->as_Call()->returns_pointer() && |
348 n->as_Call()->proj_out(TypeFunc::Parms) != NULL) || | |
349 (n->is_CallStaticJava() && | |
350 n->as_CallStaticJava()->is_boxing_method())) { | |
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351 add_call_node(n->as_Call()); |
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352 } |
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353 } |
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354 return; |
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355 } |
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356 // Put this check here to process call arguments since some call nodes |
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357 // point to phantom_obj. |
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358 if (n_ptn == phantom_obj || n_ptn == null_obj) |
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359 return; // Skip predefined nodes. |
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360 |
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361 int opcode = n->Opcode(); |
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362 switch (opcode) { |
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363 case Op_AddP: { |
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364 Node* base = get_addp_base(n); |
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365 PointsToNode* ptn_base = ptnode_adr(base->_idx); |
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366 // Field nodes are created for all field types. They are used in |
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367 // adjust_scalar_replaceable_state() and split_unique_types(). |
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368 // Note, non-oop fields will have only base edges in Connection |
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369 // Graph because such fields are not used for oop loads and stores. |
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370 int offset = address_offset(n, igvn); |
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371 add_field(n, PointsToNode::NoEscape, offset); |
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372 if (ptn_base == NULL) { |
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373 delayed_worklist->push(n); // Process it later. |
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374 } else { |
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375 n_ptn = ptnode_adr(n_idx); |
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376 add_base(n_ptn->as_Field(), ptn_base); |
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377 } |
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378 break; |
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379 } |
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380 case Op_CastX2P: { |
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381 map_ideal_node(n, phantom_obj); |
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382 break; |
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383 } |
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384 case Op_CastPP: |
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385 case Op_CheckCastPP: |
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386 case Op_EncodeP: |
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387 case Op_DecodeN: |
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388 case Op_EncodePKlass: |
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389 case Op_DecodeNKlass: { |
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390 add_local_var_and_edge(n, PointsToNode::NoEscape, |
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391 n->in(1), delayed_worklist); |
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392 break; |
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393 } |
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394 case Op_CMoveP: { |
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395 add_local_var(n, PointsToNode::NoEscape); |
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396 // Do not add edges during first iteration because some could be |
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397 // not defined yet. |
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398 delayed_worklist->push(n); |
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399 break; |
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400 } |
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401 case Op_ConP: |
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402 case Op_ConN: |
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403 case Op_ConNKlass: { |
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404 // assume all oop constants globally escape except for null |
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405 PointsToNode::EscapeState es; |
10278 | 406 const Type* t = igvn->type(n); |
407 if (t == TypePtr::NULL_PTR || t == TypeNarrowOop::NULL_PTR) { | |
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408 es = PointsToNode::NoEscape; |
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409 } else { |
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410 es = PointsToNode::GlobalEscape; |
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411 } |
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412 add_java_object(n, es); |
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413 break; |
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414 } |
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415 case Op_CreateEx: { |
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416 // assume that all exception objects globally escape |
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417 add_java_object(n, PointsToNode::GlobalEscape); |
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|
418 break; |
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changeset
|
419 } |
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diff
changeset
|
420 case Op_LoadKlass: |
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parents:
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diff
changeset
|
421 case Op_LoadNKlass: { |
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changeset
|
422 // Unknown class is loaded |
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changeset
|
423 map_ideal_node(n, phantom_obj); |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
424 break; |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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parents:
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diff
changeset
|
425 } |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
426 case Op_LoadP: |
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diff
changeset
|
427 case Op_LoadN: |
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diff
changeset
|
428 case Op_LoadPLocked: { |
6795
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changeset
|
429 add_objload_to_connection_graph(n, delayed_worklist); |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
430 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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parents:
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diff
changeset
|
431 } |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
432 case Op_Parm: { |
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changeset
|
433 map_ideal_node(n, phantom_obj); |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
434 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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parents:
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diff
changeset
|
435 } |
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diff
changeset
|
436 case Op_PartialSubtypeCheck: { |
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changeset
|
437 // Produces Null or notNull and is used in only in CmpP so |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
438 // phantom_obj could be used. |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
439 map_ideal_node(n, phantom_obj); // Result is unknown |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
440 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
441 } |
ee138854b3a6
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diff
changeset
|
442 case Op_Phi: { |
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changeset
|
443 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because |
6795
7eca5de9e0b6
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roland
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diff
changeset
|
444 // ThreadLocal has RawPtr type. |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
445 const Type* t = n->as_Phi()->type(); |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
446 if (t->make_ptr() != NULL) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
447 add_local_var(n, PointsToNode::NoEscape); |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
448 // Do not add edges during first iteration because some could be |
ee138854b3a6
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changeset
|
449 // not defined yet. |
ee138854b3a6
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changeset
|
450 delayed_worklist->push(n); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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changeset
|
451 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
452 break; |
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parents:
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diff
changeset
|
453 } |
ee138854b3a6
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diff
changeset
|
454 case Op_Proj: { |
ee138854b3a6
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changeset
|
455 // we are only interested in the oop result projection from a call |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
456 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
|
457 n->in(0)->as_Call()->returns_pointer()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
458 add_local_var_and_edge(n, PointsToNode::NoEscape, |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
459 n->in(0), delayed_worklist); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
460 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
461 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
462 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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changeset
|
463 case Op_Rethrow: // Exception object escapes |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
464 case Op_Return: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
465 if (n->req() > TypeFunc::Parms && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
466 igvn->type(n->in(TypeFunc::Parms))->isa_oopptr()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
467 // Treat Return value as LocalVar with GlobalEscape escape state. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
468 add_local_var_and_edge(n, PointsToNode::GlobalEscape, |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
469 n->in(TypeFunc::Parms), delayed_worklist); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
470 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
471 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
472 } |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
changeset
|
473 case Op_GetAndSetP: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
changeset
|
474 case Op_GetAndSetN: { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
changeset
|
475 add_objload_to_connection_graph(n, delayed_worklist); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
changeset
|
476 // fallthrough |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6268
diff
changeset
|
477 } |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
478 case Op_StoreP: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
479 case Op_StoreN: |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
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6795
diff
changeset
|
480 case Op_StoreNKlass: |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
481 case Op_StorePConditional: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
482 case Op_CompareAndSwapP: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
483 case Op_CompareAndSwapN: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
484 Node* adr = n->in(MemNode::Address); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
485 const Type *adr_type = igvn->type(adr); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
486 adr_type = adr_type->make_ptr(); |
10279
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
487 if (adr_type == NULL) { |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
488 break; // skip dead nodes |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
489 } |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
490 if (adr_type->isa_oopptr() || |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
491 (opcode == Op_StoreP || opcode == Op_StoreN || opcode == Op_StoreNKlass) && |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
492 (adr_type == TypeRawPtr::NOTNULL && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
493 adr->in(AddPNode::Address)->is_Proj() && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
494 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
|
495 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
|
496 #ifdef ASSERT |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
497 assert(adr->is_AddP(), "expecting an AddP"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
498 if (adr_type == TypeRawPtr::NOTNULL) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
499 // Verify a raw address for a store captured by Initialize node. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
500 int offs = (int)igvn->find_intptr_t_con(adr->in(AddPNode::Offset), Type::OffsetBot); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
501 assert(offs != Type::OffsetBot, "offset must be a constant"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
502 } |
5954
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
503 #endif |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
504 } else { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
505 // Ignore copy the displaced header to the BoxNode (OSR compilation). |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
506 if (adr->is_BoxLock()) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
507 break; |
5954
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
508 // Stored value escapes in unsafe access. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
509 if ((opcode == Op_StoreP) && (adr_type == TypeRawPtr::BOTTOM)) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
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diff
changeset
|
510 // Pointer stores in G1 barriers looks like unsafe access. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
511 // Ignore such stores to be able scalar replace non-escaping |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
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diff
changeset
|
512 // allocations. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
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diff
changeset
|
513 if (UseG1GC && adr->is_AddP()) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
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diff
changeset
|
514 Node* base = get_addp_base(adr); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
515 if (base->Opcode() == Op_LoadP && |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
516 base->in(MemNode::Address)->is_AddP()) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
517 adr = base->in(MemNode::Address); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
518 Node* tls = get_addp_base(adr); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
519 if (tls->Opcode() == Op_ThreadLocal) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
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diff
changeset
|
520 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
|
521 if (offs == in_bytes(JavaThread::satb_mark_queue_offset() + |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
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diff
changeset
|
522 PtrQueue::byte_offset_of_buf())) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
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diff
changeset
|
523 break; // G1 pre barier previous oop value store. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
524 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
525 if (offs == in_bytes(JavaThread::dirty_card_queue_offset() + |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
526 PtrQueue::byte_offset_of_buf())) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
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diff
changeset
|
527 break; // G1 post barier card address store. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
528 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
529 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
530 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
531 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
532 delayed_worklist->push(n); // Process unsafe access later. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
533 break; |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
534 } |
5954
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
535 #ifdef ASSERT |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
536 n->dump(1); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
537 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
|
538 #endif |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
539 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
540 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
541 } |
ee138854b3a6
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diff
changeset
|
542 case Op_AryEq: |
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diff
changeset
|
543 case Op_StrComp: |
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changeset
|
544 case Op_StrEquals: |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7196
diff
changeset
|
545 case Op_StrIndexOf: |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7196
diff
changeset
|
546 case Op_EncodeISOArray: { |
5948
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diff
changeset
|
547 add_local_var(n, PointsToNode::ArgEscape); |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
548 delayed_worklist->push(n); // Process it later. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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parents:
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diff
changeset
|
549 break; |
ee138854b3a6
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diff
changeset
|
550 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
551 case Op_ThreadLocal: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
552 add_java_object(n, PointsToNode::ArgEscape); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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parents:
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diff
changeset
|
553 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
554 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
555 default: |
ee138854b3a6
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changeset
|
556 ; // Do nothing for nodes not related to EA. |
ee138854b3a6
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diff
changeset
|
557 } |
ee138854b3a6
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kvn
parents:
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diff
changeset
|
558 return; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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parents:
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diff
changeset
|
559 } |
ee138854b3a6
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diff
changeset
|
560 |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
561 #ifdef ASSERT |
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|
562 #define ELSE_FAIL(name) \ |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
563 /* Should not be called for not pointer type. */ \ |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
564 n->dump(1); \ |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
565 assert(false, name); \ |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
566 break; |
ee138854b3a6
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kvn
parents:
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diff
changeset
|
567 #else |
ee138854b3a6
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kvn
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diff
changeset
|
568 #define ELSE_FAIL(name) \ |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
569 break; |
ee138854b3a6
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parents:
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diff
changeset
|
570 #endif |
ee138854b3a6
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parents:
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diff
changeset
|
571 |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
572 // Add final simple edges to graph. |
ee138854b3a6
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kvn
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diff
changeset
|
573 void ConnectionGraph::add_final_edges(Node *n) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
574 PointsToNode* n_ptn = ptnode_adr(n->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
575 #ifdef ASSERT |
ee138854b3a6
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diff
changeset
|
576 if (_verify && n_ptn->is_JavaObject()) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
577 return; // This method does not change graph for JavaObject. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
578 #endif |
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parents:
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diff
changeset
|
579 |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
580 if (n->is_Call()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
581 process_call_arguments(n->as_Call()); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
582 return; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
583 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
584 assert(n->is_Store() || n->is_LoadStore() || |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
585 (n_ptn != NULL) && (n_ptn->ideal_node() != NULL), |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
586 "node should be registered already"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
587 int opcode = n->Opcode(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
588 switch (opcode) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
589 case Op_AddP: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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parents:
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diff
changeset
|
590 Node* base = get_addp_base(n); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
591 PointsToNode* ptn_base = ptnode_adr(base->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
592 assert(ptn_base != NULL, "field's base should be registered"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
593 add_base(n_ptn->as_Field(), ptn_base); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
594 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
595 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
596 case Op_CastPP: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
597 case Op_CheckCastPP: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
598 case Op_EncodeP: |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
599 case Op_DecodeN: |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
600 case Op_EncodePKlass: |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
601 case Op_DecodeNKlass: { |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
602 add_local_var_and_edge(n, PointsToNode::NoEscape, |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
603 n->in(1), NULL); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
604 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
605 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
606 case Op_CMoveP: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
607 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
|
608 Node* in = n->in(i); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
609 if (in == NULL) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
610 continue; // ignore NULL |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
611 Node* uncast_in = in->uncast(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
612 if (uncast_in->is_top() || uncast_in == n) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
613 continue; // ignore top or inputs which go back this node |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
614 PointsToNode* ptn = ptnode_adr(in->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
615 assert(ptn != NULL, "node should be registered"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
616 add_edge(n_ptn, ptn); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
617 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
618 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
619 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
620 case Op_LoadP: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
621 case Op_LoadN: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
622 case Op_LoadPLocked: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
623 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6268
diff
changeset
|
624 // ThreadLocal has RawPtr type. |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
625 const Type* t = _igvn->type(n); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
626 if (t->make_ptr() != NULL) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
627 Node* adr = n->in(MemNode::Address); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
628 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
|
629 break; |
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:
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diff
changeset
|
631 ELSE_FAIL("Op_LoadP"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
632 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
633 case Op_Phi: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
634 // Using isa_ptr() instead of isa_oopptr() for LoadP and Phi because |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6268
diff
changeset
|
635 // ThreadLocal has RawPtr type. |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
636 const Type* t = n->as_Phi()->type(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
637 if (t->make_ptr() != NULL) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
638 for (uint i = 1; i < n->req(); i++) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
639 Node* in = n->in(i); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
640 if (in == NULL) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
641 continue; // ignore NULL |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
642 Node* uncast_in = in->uncast(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
643 if (uncast_in->is_top() || uncast_in == n) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
644 continue; // ignore top or inputs which go back this node |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
645 PointsToNode* ptn = ptnode_adr(in->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
646 assert(ptn != NULL, "node should be registered"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
647 add_edge(n_ptn, ptn); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
648 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
649 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
650 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
651 ELSE_FAIL("Op_Phi"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
652 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
653 case Op_Proj: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
654 // we are only interested in the oop result projection from a call |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
655 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
|
656 n->in(0)->as_Call()->returns_pointer()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
657 add_local_var_and_edge(n, PointsToNode::NoEscape, n->in(0), NULL); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
658 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
659 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
660 ELSE_FAIL("Op_Proj"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
661 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
662 case Op_Rethrow: // Exception object escapes |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
663 case Op_Return: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
664 if (n->req() > TypeFunc::Parms && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
665 _igvn->type(n->in(TypeFunc::Parms))->isa_oopptr()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
666 // Treat Return value as LocalVar with GlobalEscape escape state. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
667 add_local_var_and_edge(n, PointsToNode::GlobalEscape, |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
668 n->in(TypeFunc::Parms), NULL); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
669 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
670 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
671 ELSE_FAIL("Op_Return"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
672 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
673 case Op_StoreP: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
674 case Op_StoreN: |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
675 case Op_StoreNKlass: |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
676 case Op_StorePConditional: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
677 case Op_CompareAndSwapP: |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6268
diff
changeset
|
678 case Op_CompareAndSwapN: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6268
diff
changeset
|
679 case Op_GetAndSetP: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6268
diff
changeset
|
680 case Op_GetAndSetN: { |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
681 Node* adr = n->in(MemNode::Address); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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changeset
|
682 const Type *adr_type = _igvn->type(adr); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
683 adr_type = adr_type->make_ptr(); |
10279
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
684 #ifdef ASSERT |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
685 if (adr_type == NULL) { |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
686 n->dump(1); |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
687 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
|
688 break; |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
689 } |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
690 #endif |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
691 if (opcode == Op_GetAndSetP || opcode == Op_GetAndSetN) { |
70120f47d403
8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
kvn
parents:
10278
diff
changeset
|
692 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
|
693 } |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
694 if (adr_type->isa_oopptr() || |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
695 (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
|
696 (adr_type == TypeRawPtr::NOTNULL && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
697 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
|
698 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
|
699 // Point Address to Value |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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diff
changeset
|
700 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
|
701 assert(adr_ptn != NULL && |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
702 adr_ptn->as_Field()->is_oop(), "node should be registered"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
703 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
|
704 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
|
705 assert(ptn != NULL, "node should be registered"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
706 add_edge(adr_ptn, ptn); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
707 break; |
5954
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
708 } else if ((opcode == Op_StoreP) && (adr_type == TypeRawPtr::BOTTOM)) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
709 // Stored value escapes in unsafe access. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
710 Node *val = n->in(MemNode::ValueIn); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
711 PointsToNode* ptn = ptnode_adr(val->_idx); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
712 assert(ptn != NULL, "node should be registered"); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
713 ptn->set_escape_state(PointsToNode::GlobalEscape); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
714 // Add edge to object for unsafe access with offset. |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
715 PointsToNode* adr_ptn = ptnode_adr(adr->_idx); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
716 assert(adr_ptn != NULL, "node should be registered"); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
717 if (adr_ptn->is_Field()) { |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
718 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
|
719 add_edge(adr_ptn, ptn); |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
720 } |
ed4c92f54c2d
7154997: assert(false) failed: not G1 barrier raw StoreP
kvn
parents:
5948
diff
changeset
|
721 break; |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
722 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
723 ELSE_FAIL("Op_StoreP"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
724 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
725 case Op_AryEq: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
726 case Op_StrComp: |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
727 case Op_StrEquals: |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
728 case Op_StrIndexOf: |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
729 case Op_EncodeISOArray: { |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
730 // 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
|
731 // 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
|
732 // 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
|
733 for (uint i = 2; i < n->req(); i++) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
734 Node* adr = n->in(i); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
735 const Type* at = _igvn->type(adr); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
736 if (!adr->is_top() && at->isa_ptr()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
737 assert(at == Type::TOP || at == TypePtr::NULL_PTR || |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
738 at->isa_ptr() != NULL, "expecting a pointer"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
739 if (adr->is_AddP()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
740 adr = get_addp_base(adr); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
741 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
742 PointsToNode* ptn = ptnode_adr(adr->_idx); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
743 assert(ptn != NULL, "node should be registered"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
744 add_edge(n_ptn, ptn); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
745 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
746 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
747 break; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
748 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
749 default: { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
750 // 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
|
751 // miss some edges when they were created. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
752 #ifdef ASSERT |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
753 n->dump(1); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
754 #endif |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
755 guarantee(false, "unknown node"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
756 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
757 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
758 return; |
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 |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
761 void ConnectionGraph::add_call_node(CallNode* call) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
762 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
|
763 uint call_idx = call->_idx; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
764 if (call->is_Allocate()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
765 Node* k = call->in(AllocateNode::KlassNode); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
766 const TypeKlassPtr* kt = k->bottom_type()->isa_klassptr(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
767 assert(kt != NULL, "TypeKlassPtr required."); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
768 ciKlass* cik = kt->klass(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
769 PointsToNode::EscapeState es = PointsToNode::NoEscape; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
770 bool scalar_replaceable = true; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
771 if (call->is_AllocateArray()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
772 if (!cik->is_array_klass()) { // StressReflectiveCode |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
773 es = PointsToNode::GlobalEscape; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
774 } else { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
775 int length = call->in(AllocateNode::ALength)->find_int_con(-1); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
776 if (length < 0 || length > EliminateAllocationArraySizeLimit) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
777 // Not scalar replaceable if the length is not constant or too big. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
778 scalar_replaceable = false; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
779 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
780 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
781 } else { // Allocate instance |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
782 if (cik->is_subclass_of(_compile->env()->Thread_klass()) || |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
783 !cik->is_instance_klass() || // StressReflectiveCode |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
784 cik->as_instance_klass()->has_finalizer()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
785 es = PointsToNode::GlobalEscape; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
786 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
787 } |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
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|
788 add_java_object(call, es); |
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789 PointsToNode* ptn = ptnode_adr(call_idx); |
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790 if (!scalar_replaceable && ptn->scalar_replaceable()) { |
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|
791 ptn->set_scalar_replaceable(false); |
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|
792 } |
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793 } else if (call->is_CallStaticJava()) { |
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|
794 // Call nodes could be different types: |
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|
795 // |
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796 // 1. CallDynamicJavaNode (what happened during call is unknown): |
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|
797 // |
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798 // - mapped to GlobalEscape JavaObject node if oop is returned; |
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|
799 // |
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800 // - all oop arguments are escaping globally; |
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801 // |
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802 // 2. CallStaticJavaNode (execute bytecode analysis if possible): |
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|
803 // |
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804 // - the same as CallDynamicJavaNode if can't do bytecode analysis; |
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|
805 // |
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806 // - mapped to GlobalEscape JavaObject node if unknown oop is returned; |
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807 // - mapped to NoEscape JavaObject node if non-escaping object allocated |
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808 // during call is returned; |
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809 // - mapped to ArgEscape LocalVar node pointed to object arguments |
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810 // which are returned and does not escape during call; |
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|
811 // |
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812 // - oop arguments escaping status is defined by bytecode analysis; |
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813 // |
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814 // For a static call, we know exactly what method is being called. |
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|
815 // Use bytecode estimator to record whether the call's return value escapes. |
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816 ciMethod* meth = call->as_CallJava()->method(); |
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817 if (meth == NULL) { |
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|
818 const char* name = call->as_CallStaticJava()->_name; |
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819 assert(strncmp(name, "_multianewarray", 15) == 0, "TODO: add failed case check"); |
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820 // Returns a newly allocated unescaped object. |
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821 add_java_object(call, PointsToNode::NoEscape); |
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|
822 ptnode_adr(call_idx)->set_scalar_replaceable(false); |
10278 | 823 } else if (meth->is_boxing_method()) { |
824 // Returns boxing object | |
10281
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|
825 PointsToNode::EscapeState es; |
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|
826 vmIntrinsics::ID intr = meth->intrinsic_id(); |
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|
827 if (intr == vmIntrinsics::_floatValue || intr == vmIntrinsics::_doubleValue) { |
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828 // It does not escape if object is always allocated. |
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829 es = PointsToNode::NoEscape; |
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830 } else { |
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|
831 // It escapes globally if object could be loaded from cache. |
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|
832 es = PointsToNode::GlobalEscape; |
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|
833 } |
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|
834 add_java_object(call, es); |
4122
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|
835 } else { |
5948
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836 BCEscapeAnalyzer* call_analyzer = meth->get_bcea(); |
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837 call_analyzer->copy_dependencies(_compile->dependencies()); |
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838 if (call_analyzer->is_return_allocated()) { |
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839 // Returns a newly allocated unescaped object, simply |
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|
840 // update dependency information. |
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841 // Mark it as NoEscape so that objects referenced by |
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842 // it's fields will be marked as NoEscape at least. |
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843 add_java_object(call, PointsToNode::NoEscape); |
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844 ptnode_adr(call_idx)->set_scalar_replaceable(false); |
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845 } else { |
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|
846 // Determine whether any arguments are returned. |
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847 const TypeTuple* d = call->tf()->domain(); |
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|
848 bool ret_arg = false; |
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849 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) { |
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850 if (d->field_at(i)->isa_ptr() != NULL && |
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851 call_analyzer->is_arg_returned(i - TypeFunc::Parms)) { |
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|
852 ret_arg = true; |
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|
853 break; |
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|
854 } |
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|
855 } |
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|
856 if (ret_arg) { |
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|
857 add_local_var(call, PointsToNode::ArgEscape); |
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858 } else { |
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|
859 // Returns unknown object. |
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|
860 map_ideal_node(call, phantom_obj); |
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|
861 } |
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|
862 } |
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|
863 } |
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|
864 } else { |
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|
865 // An other type of call, assume the worst case: |
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|
866 // returned value is unknown and globally escapes. |
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867 assert(call->Opcode() == Op_CallDynamicJava, "add failed case check"); |
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868 map_ideal_node(call, phantom_obj); |
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|
869 } |
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|
870 } |
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|
871 |
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|
872 void ConnectionGraph::process_call_arguments(CallNode *call) { |
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|
873 bool is_arraycopy = false; |
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|
874 switch (call->Opcode()) { |
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|
875 #ifdef ASSERT |
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|
876 case Op_Allocate: |
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|
877 case Op_AllocateArray: |
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|
878 case Op_Lock: |
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|
879 case Op_Unlock: |
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880 assert(false, "should be done already"); |
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|
881 break; |
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|
882 #endif |
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|
883 case Op_CallLeafNoFP: |
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884 is_arraycopy = (call->as_CallLeaf()->_name != NULL && |
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885 strstr(call->as_CallLeaf()->_name, "arraycopy") != 0); |
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|
886 // fall through |
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887 case Op_CallLeaf: { |
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888 // Stub calls, objects do not escape but they are not scale replaceable. |
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889 // Adjust escape state for outgoing arguments. |
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890 const TypeTuple * d = call->tf()->domain(); |
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891 bool src_has_oops = false; |
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892 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) { |
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893 const Type* at = d->field_at(i); |
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894 Node *arg = call->in(i); |
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895 const Type *aat = _igvn->type(arg); |
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|
896 if (arg->is_top() || !at->isa_ptr() || !aat->isa_ptr()) |
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|
897 continue; |
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|
898 if (arg->is_AddP()) { |
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|
899 // |
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|
900 // The inline_native_clone() case when the arraycopy stub is called |
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|
901 // after the allocation before Initialize and CheckCastPP nodes. |
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902 // Or normal arraycopy for object arrays case. |
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|
903 // |
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904 // Set AddP's base (Allocate) as not scalar replaceable since |
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|
905 // pointer to the base (with offset) is passed as argument. |
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|
906 // |
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907 arg = get_addp_base(arg); |
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|
908 } |
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909 PointsToNode* arg_ptn = ptnode_adr(arg->_idx); |
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910 assert(arg_ptn != NULL, "should be registered"); |
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911 PointsToNode::EscapeState arg_esc = arg_ptn->escape_state(); |
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912 if (is_arraycopy || arg_esc < PointsToNode::ArgEscape) { |
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913 assert(aat == Type::TOP || aat == TypePtr::NULL_PTR || |
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914 aat->isa_ptr() != NULL, "expecting an Ptr"); |
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915 bool arg_has_oops = aat->isa_oopptr() && |
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916 (aat->isa_oopptr()->klass() == NULL || aat->isa_instptr() || |
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917 (aat->isa_aryptr() && aat->isa_aryptr()->klass()->is_obj_array_klass())); |
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918 if (i == TypeFunc::Parms) { |
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919 src_has_oops = arg_has_oops; |
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920 } |
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921 // |
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922 // src or dst could be j.l.Object when other is basic type array: |
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923 // |
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924 // arraycopy(char[],0,Object*,0,size); |
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925 // arraycopy(Object*,0,char[],0,size); |
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926 // |
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927 // Don't add edges in such cases. |
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928 // |
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929 bool arg_is_arraycopy_dest = src_has_oops && is_arraycopy && |
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930 arg_has_oops && (i > TypeFunc::Parms); |
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931 #ifdef ASSERT |
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932 if (!(is_arraycopy || |
6894 | 933 (call->as_CallLeaf()->_name != NULL && |
934 (strcmp(call->as_CallLeaf()->_name, "g1_wb_pre") == 0 || | |
935 strcmp(call->as_CallLeaf()->_name, "g1_wb_post") == 0 || | |
11080
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936 strcmp(call->as_CallLeaf()->_name, "updateBytesCRC32") == 0 || |
6894 | 937 strcmp(call->as_CallLeaf()->_name, "aescrypt_encryptBlock") == 0 || |
938 strcmp(call->as_CallLeaf()->_name, "aescrypt_decryptBlock") == 0 || | |
939 strcmp(call->as_CallLeaf()->_name, "cipherBlockChaining_encryptAESCrypt") == 0 || | |
940 strcmp(call->as_CallLeaf()->_name, "cipherBlockChaining_decryptAESCrypt") == 0) | |
941 ))) { | |
5948
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942 call->dump(); |
6894 | 943 fatal(err_msg_res("EA unexpected CallLeaf %s", call->as_CallLeaf()->_name)); |
5948
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944 } |
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945 #endif |
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946 // Always process arraycopy's destination object since |
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947 // we need to add all possible edges to references in |
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948 // source object. |
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949 if (arg_esc >= PointsToNode::ArgEscape && |
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950 !arg_is_arraycopy_dest) { |
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951 continue; |
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952 } |
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953 set_escape_state(arg_ptn, PointsToNode::ArgEscape); |
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954 if (arg_is_arraycopy_dest) { |
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955 Node* src = call->in(TypeFunc::Parms); |
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956 if (src->is_AddP()) { |
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957 src = get_addp_base(src); |
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958 } |
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959 PointsToNode* src_ptn = ptnode_adr(src->_idx); |
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960 assert(src_ptn != NULL, "should be registered"); |
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961 if (arg_ptn != src_ptn) { |
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962 // Special arraycopy edge: |
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963 // A destination object's field can't have the source object |
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964 // as base since objects escape states are not related. |
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965 // Only escape state of destination object's fields affects |
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966 // escape state of fields in source object. |
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967 add_arraycopy(call, PointsToNode::ArgEscape, src_ptn, arg_ptn); |
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968 } |
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969 } |
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970 } |
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|
971 } |
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972 break; |
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973 } |
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974 case Op_CallStaticJava: { |
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975 // For a static call, we know exactly what method is being called. |
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976 // Use bytecode estimator to record the call's escape affects |
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977 #ifdef ASSERT |
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978 const char* name = call->as_CallStaticJava()->_name; |
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979 assert((name == NULL || strcmp(name, "uncommon_trap") != 0), "normal calls only"); |
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980 #endif |
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981 ciMethod* meth = call->as_CallJava()->method(); |
10278 | 982 if ((meth != NULL) && meth->is_boxing_method()) { |
983 break; // Boxing methods do not modify any oops. | |
984 } | |
5948
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985 BCEscapeAnalyzer* call_analyzer = (meth !=NULL) ? meth->get_bcea() : NULL; |
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986 // fall-through if not a Java method or no analyzer information |
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987 if (call_analyzer != NULL) { |
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988 PointsToNode* call_ptn = ptnode_adr(call->_idx); |
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989 const TypeTuple* d = call->tf()->domain(); |
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990 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) { |
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991 const Type* at = d->field_at(i); |
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992 int k = i - TypeFunc::Parms; |
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993 Node* arg = call->in(i); |
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994 PointsToNode* arg_ptn = ptnode_adr(arg->_idx); |
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995 if (at->isa_ptr() != NULL && |
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996 call_analyzer->is_arg_returned(k)) { |
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997 // The call returns arguments. |
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998 if (call_ptn != NULL) { // Is call's result used? |
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999 assert(call_ptn->is_LocalVar(), "node should be registered"); |
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1000 assert(arg_ptn != NULL, "node should be registered"); |
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1001 add_edge(call_ptn, arg_ptn); |
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1002 } |
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1003 } |
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1004 if (at->isa_oopptr() != NULL && |
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1005 arg_ptn->escape_state() < PointsToNode::GlobalEscape) { |
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1006 if (!call_analyzer->is_arg_stack(k)) { |
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1007 // The argument global escapes |
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1008 set_escape_state(arg_ptn, PointsToNode::GlobalEscape); |
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1009 } else { |
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1010 set_escape_state(arg_ptn, PointsToNode::ArgEscape); |
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1011 if (!call_analyzer->is_arg_local(k)) { |
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1012 // The argument itself doesn't escape, but any fields might |
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1013 set_fields_escape_state(arg_ptn, PointsToNode::GlobalEscape); |
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1014 } |
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1015 } |
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1016 } |
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1017 } |
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1018 if (call_ptn != NULL && call_ptn->is_LocalVar()) { |
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1019 // The call returns arguments. |
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1020 assert(call_ptn->edge_count() > 0, "sanity"); |
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1021 if (!call_analyzer->is_return_local()) { |
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1022 // Returns also unknown object. |
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1023 add_edge(call_ptn, phantom_obj); |
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1024 } |
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1025 } |
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1026 break; |
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1027 } |
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1028 } |
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1029 default: { |
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1030 // Fall-through here if not a Java method or no analyzer information |
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1031 // or some other type of call, assume the worst case: all arguments |
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1032 // globally escape. |
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1033 const TypeTuple* d = call->tf()->domain(); |
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1034 for (uint i = TypeFunc::Parms; i < d->cnt(); i++) { |
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1035 const Type* at = d->field_at(i); |
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1036 if (at->isa_oopptr() != NULL) { |
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1037 Node* arg = call->in(i); |
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1038 if (arg->is_AddP()) { |
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1039 arg = get_addp_base(arg); |
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1040 } |
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1041 assert(ptnode_adr(arg->_idx) != NULL, "should be defined already"); |
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1042 set_escape_state(ptnode_adr(arg->_idx), PointsToNode::GlobalEscape); |
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1043 } |
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1044 } |
4122
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1045 } |
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1046 } |
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1047 } |
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1048 |
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1049 |
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1050 // Finish Graph construction. |
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1051 bool ConnectionGraph::complete_connection_graph( |
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1052 GrowableArray<PointsToNode*>& ptnodes_worklist, |
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1053 GrowableArray<JavaObjectNode*>& non_escaped_worklist, |
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1054 GrowableArray<JavaObjectNode*>& java_objects_worklist, |
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1055 GrowableArray<FieldNode*>& oop_fields_worklist) { |
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1056 // Normally only 1-3 passes needed to build Connection Graph depending |
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1057 // on graph complexity. Observed 8 passes in jvm2008 compiler.compiler. |
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1058 // Set limit to 20 to catch situation when something did go wrong and |
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1059 // bailout Escape Analysis. |
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1060 // Also limit build time to 30 sec (60 in debug VM). |
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1061 #define CG_BUILD_ITER_LIMIT 20 |
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1062 #ifdef ASSERT |
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1063 #define CG_BUILD_TIME_LIMIT 60.0 |
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1064 #else |
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1065 #define CG_BUILD_TIME_LIMIT 30.0 |
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1066 #endif |
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1067 |
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1068 // Propagate GlobalEscape and ArgEscape escape states and check that |
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1069 // we still have non-escaping objects. The method pushs on _worklist |
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1070 // Field nodes which reference phantom_object. |
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1071 if (!find_non_escaped_objects(ptnodes_worklist, non_escaped_worklist)) { |
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1072 return false; // Nothing to do. |
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1073 } |
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1074 // Now propagate references to all JavaObject nodes. |
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1075 int java_objects_length = java_objects_worklist.length(); |
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1076 elapsedTimer time; |
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1077 int new_edges = 1; |
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1078 int iterations = 0; |
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1079 do { |
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1080 while ((new_edges > 0) && |
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1081 (iterations++ < CG_BUILD_ITER_LIMIT) && |
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1082 (time.seconds() < CG_BUILD_TIME_LIMIT)) { |
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1083 time.start(); |
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1084 new_edges = 0; |
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1085 // Propagate references to phantom_object for nodes pushed on _worklist |
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1086 // by find_non_escaped_objects() and find_field_value(). |
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1087 new_edges += add_java_object_edges(phantom_obj, false); |
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1088 for (int next = 0; next < java_objects_length; ++next) { |
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1089 JavaObjectNode* ptn = java_objects_worklist.at(next); |
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1090 new_edges += add_java_object_edges(ptn, true); |
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1091 } |
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1092 if (new_edges > 0) { |
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1093 // Update escape states on each iteration if graph was updated. |
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1094 if (!find_non_escaped_objects(ptnodes_worklist, non_escaped_worklist)) { |
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1095 return false; // Nothing to do. |
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1096 } |
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1097 } |
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1098 time.stop(); |
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1099 } |
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1100 if ((iterations < CG_BUILD_ITER_LIMIT) && |
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1101 (time.seconds() < CG_BUILD_TIME_LIMIT)) { |
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1102 time.start(); |
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1103 // Find fields which have unknown value. |
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1104 int fields_length = oop_fields_worklist.length(); |
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1105 for (int next = 0; next < fields_length; next++) { |
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1106 FieldNode* field = oop_fields_worklist.at(next); |
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1107 if (field->edge_count() == 0) { |
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1108 new_edges += find_field_value(field); |
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1109 // This code may added new edges to phantom_object. |
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1110 // Need an other cycle to propagate references to phantom_object. |
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1111 } |
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1112 } |
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1113 time.stop(); |
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1114 } else { |
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1115 new_edges = 0; // Bailout |
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1116 } |
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1117 } while (new_edges > 0); |
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1118 |
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1119 // Bailout if passed limits. |
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1120 if ((iterations >= CG_BUILD_ITER_LIMIT) || |
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1121 (time.seconds() >= CG_BUILD_TIME_LIMIT)) { |
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1122 Compile* C = _compile; |
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1123 if (C->log() != NULL) { |
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1124 C->log()->begin_elem("connectionGraph_bailout reason='reached "); |
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1125 C->log()->text("%s", (iterations >= CG_BUILD_ITER_LIMIT) ? "iterations" : "time"); |
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1126 C->log()->end_elem(" limit'"); |
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1127 } |
6895
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1128 assert(ExitEscapeAnalysisOnTimeout, err_msg_res("infinite EA connection graph build (%f sec, %d iterations) with %d nodes and worklist size %d", |
5948
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1129 time.seconds(), iterations, nodes_size(), ptnodes_worklist.length())); |
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1130 // Possible infinite build_connection_graph loop, |
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1131 // bailout (no changes to ideal graph were made). |
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1132 return false; |
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1133 } |
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1134 #ifdef ASSERT |
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1135 if (Verbose && PrintEscapeAnalysis) { |
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1136 tty->print_cr("EA: %d iterations to build connection graph with %d nodes and worklist size %d", |
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1137 iterations, nodes_size(), ptnodes_worklist.length()); |
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1138 } |
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1139 #endif |
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1140 |
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1141 #undef CG_BUILD_ITER_LIMIT |
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1142 #undef CG_BUILD_TIME_LIMIT |
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1143 |
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1144 // Find fields initialized by NULL for non-escaping Allocations. |
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1145 int non_escaped_length = non_escaped_worklist.length(); |
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1146 for (int next = 0; next < non_escaped_length; next++) { |
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1147 JavaObjectNode* ptn = non_escaped_worklist.at(next); |
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1148 PointsToNode::EscapeState es = ptn->escape_state(); |
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1149 assert(es <= PointsToNode::ArgEscape, "sanity"); |
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1150 if (es == PointsToNode::NoEscape) { |
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1151 if (find_init_values(ptn, null_obj, _igvn) > 0) { |
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1152 // Adding references to NULL object does not change escape states |
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1153 // since it does not escape. Also no fields are added to NULL object. |
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1154 add_java_object_edges(null_obj, false); |
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1155 } |
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1156 } |
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1157 Node* n = ptn->ideal_node(); |
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1158 if (n->is_Allocate()) { |
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1159 // The object allocated by this Allocate node will never be |
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1160 // seen by an other thread. Mark it so that when it is |
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1161 // expanded no MemBarStoreStore is added. |
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1162 InitializeNode* ini = n->as_Allocate()->initialization(); |
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1163 if (ini != NULL) |
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1164 ini->set_does_not_escape(); |
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1165 } |
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1166 } |
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1167 return true; // Finished graph construction. |
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1168 } |
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1169 |
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1170 // Propagate GlobalEscape and ArgEscape escape states to all nodes |
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1171 // and check that we still have non-escaping java objects. |
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1172 bool ConnectionGraph::find_non_escaped_objects(GrowableArray<PointsToNode*>& ptnodes_worklist, |
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1173 GrowableArray<JavaObjectNode*>& non_escaped_worklist) { |
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1174 GrowableArray<PointsToNode*> escape_worklist; |
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1175 // First, put all nodes with GlobalEscape and ArgEscape states on worklist. |
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1176 int ptnodes_length = ptnodes_worklist.length(); |
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1177 for (int next = 0; next < ptnodes_length; ++next) { |
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1178 PointsToNode* ptn = ptnodes_worklist.at(next); |
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1179 if (ptn->escape_state() >= PointsToNode::ArgEscape || |
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1180 ptn->fields_escape_state() >= PointsToNode::ArgEscape) { |
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1181 escape_worklist.push(ptn); |
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1182 } |
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1183 } |
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1184 // Set escape states to referenced nodes (edges list). |
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1185 while (escape_worklist.length() > 0) { |
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1186 PointsToNode* ptn = escape_worklist.pop(); |
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1187 PointsToNode::EscapeState es = ptn->escape_state(); |
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1188 PointsToNode::EscapeState field_es = ptn->fields_escape_state(); |
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1189 if (ptn->is_Field() && ptn->as_Field()->is_oop() && |
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1190 es >= PointsToNode::ArgEscape) { |
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1191 // GlobalEscape or ArgEscape state of field means it has unknown value. |
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1192 if (add_edge(ptn, phantom_obj)) { |
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1193 // New edge was added |
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1194 add_field_uses_to_worklist(ptn->as_Field()); |
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1195 } |
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1196 } |
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1197 for (EdgeIterator i(ptn); i.has_next(); i.next()) { |
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1198 PointsToNode* e = i.get(); |
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1199 if (e->is_Arraycopy()) { |
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1200 assert(ptn->arraycopy_dst(), "sanity"); |
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1201 // Propagate only fields escape state through arraycopy edge. |
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1202 if (e->fields_escape_state() < field_es) { |
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1203 set_fields_escape_state(e, field_es); |
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1204 escape_worklist.push(e); |
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1205 } |
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1206 } else if (es >= field_es) { |
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1207 // fields_escape_state is also set to 'es' if it is less than 'es'. |
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1208 if (e->escape_state() < es) { |
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1209 set_escape_state(e, es); |
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1210 escape_worklist.push(e); |
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1211 } |
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1212 } else { |
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1213 // Propagate field escape state. |
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1214 bool es_changed = false; |
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1215 if (e->fields_escape_state() < field_es) { |
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1216 set_fields_escape_state(e, field_es); |
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1217 es_changed = true; |
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1218 } |
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1219 if ((e->escape_state() < field_es) && |
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1220 e->is_Field() && ptn->is_JavaObject() && |
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1221 e->as_Field()->is_oop()) { |
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1222 // Change escape state of referenced fileds. |
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1223 set_escape_state(e, field_es); |
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1224 es_changed = true;; |
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1225 } else if (e->escape_state() < es) { |
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1226 set_escape_state(e, es); |
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1227 es_changed = true;; |
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1228 } |
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1229 if (es_changed) { |
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1230 escape_worklist.push(e); |
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1231 } |
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1232 } |
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1233 } |
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1234 } |
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1235 // Remove escaped objects from non_escaped list. |
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1236 for (int next = non_escaped_worklist.length()-1; next >= 0 ; --next) { |
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1237 JavaObjectNode* ptn = non_escaped_worklist.at(next); |
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1238 if (ptn->escape_state() >= PointsToNode::GlobalEscape) { |
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1239 non_escaped_worklist.delete_at(next); |
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1240 } |
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1241 if (ptn->escape_state() == PointsToNode::NoEscape) { |
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1242 // Find fields in non-escaped allocations which have unknown value. |
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1243 find_init_values(ptn, phantom_obj, NULL); |
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1244 } |
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1245 } |
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1246 return (non_escaped_worklist.length() > 0); |
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1247 } |
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1248 |
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1249 // Add all references to JavaObject node by walking over all uses. |
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1250 int ConnectionGraph::add_java_object_edges(JavaObjectNode* jobj, bool populate_worklist) { |
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1251 int new_edges = 0; |
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1252 if (populate_worklist) { |
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1253 // Populate _worklist by uses of jobj's uses. |
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1254 for (UseIterator i(jobj); i.has_next(); i.next()) { |
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1255 PointsToNode* use = i.get(); |
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1256 if (use->is_Arraycopy()) |
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1257 continue; |
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1258 add_uses_to_worklist(use); |
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1259 if (use->is_Field() && use->as_Field()->is_oop()) { |
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1260 // Put on worklist all field's uses (loads) and |
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1261 // related field nodes (same base and offset). |
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1262 add_field_uses_to_worklist(use->as_Field()); |
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1263 } |
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1264 } |
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1265 } |
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1266 while(_worklist.length() > 0) { |
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1267 PointsToNode* use = _worklist.pop(); |
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1268 if (PointsToNode::is_base_use(use)) { |
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1269 // Add reference from jobj to field and from field to jobj (field's base). |
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1270 use = PointsToNode::get_use_node(use)->as_Field(); |
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1271 if (add_base(use->as_Field(), jobj)) { |
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1272 new_edges++; |
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1273 } |
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1274 continue; |
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1275 } |
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1276 assert(!use->is_JavaObject(), "sanity"); |
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1277 if (use->is_Arraycopy()) { |
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1278 if (jobj == null_obj) // NULL object does not have field edges |
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1279 continue; |
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1280 // Added edge from Arraycopy node to arraycopy's source java object |
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1281 if (add_edge(use, jobj)) { |
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1282 jobj->set_arraycopy_src(); |
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1283 new_edges++; |
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1284 } |
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1285 // and stop here. |
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1286 continue; |
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1287 } |
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1288 if (!add_edge(use, jobj)) |
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1289 continue; // No new edge added, there was such edge already. |
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1290 new_edges++; |
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1291 if (use->is_LocalVar()) { |
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1292 add_uses_to_worklist(use); |
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1293 if (use->arraycopy_dst()) { |
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1294 for (EdgeIterator i(use); i.has_next(); i.next()) { |
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1295 PointsToNode* e = i.get(); |
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1296 if (e->is_Arraycopy()) { |
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1297 if (jobj == null_obj) // NULL object does not have field edges |
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1298 continue; |
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1299 // Add edge from arraycopy's destination java object to Arraycopy node. |
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1300 if (add_edge(jobj, e)) { |
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1301 new_edges++; |
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1302 jobj->set_arraycopy_dst(); |
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1303 } |
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1304 } |
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1305 } |
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1306 } |
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1307 } else { |
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1308 // Added new edge to stored in field values. |
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1309 // Put on worklist all field's uses (loads) and |
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1310 // related field nodes (same base and offset). |
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1311 add_field_uses_to_worklist(use->as_Field()); |
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1312 } |
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1313 } |
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1314 return new_edges; |
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1315 } |
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1316 |
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1317 // Put on worklist all related field nodes. |
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1318 void ConnectionGraph::add_field_uses_to_worklist(FieldNode* field) { |
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1319 assert(field->is_oop(), "sanity"); |
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1320 int offset = field->offset(); |
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1321 add_uses_to_worklist(field); |
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1322 // Loop over all bases of this field and push on worklist Field nodes |
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1323 // with the same offset and base (since they may reference the same field). |
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1324 for (BaseIterator i(field); i.has_next(); i.next()) { |
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1325 PointsToNode* base = i.get(); |
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1326 add_fields_to_worklist(field, base); |
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1327 // Check if the base was source object of arraycopy and go over arraycopy's |
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1328 // destination objects since values stored to a field of source object are |
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1329 // accessable by uses (loads) of fields of destination objects. |
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1330 if (base->arraycopy_src()) { |
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1331 for (UseIterator j(base); j.has_next(); j.next()) { |
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1332 PointsToNode* arycp = j.get(); |
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1333 if (arycp->is_Arraycopy()) { |
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1334 for (UseIterator k(arycp); k.has_next(); k.next()) { |
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1335 PointsToNode* abase = k.get(); |
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1336 if (abase->arraycopy_dst() && abase != base) { |
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1337 // Look for the same arracopy reference. |
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1338 add_fields_to_worklist(field, abase); |
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1339 } |
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1340 } |
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1341 } |
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1342 } |
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1343 } |
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1344 } |
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1345 } |
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1346 |
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1347 // Put on worklist all related field nodes. |
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1348 void ConnectionGraph::add_fields_to_worklist(FieldNode* field, PointsToNode* base) { |
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1349 int offset = field->offset(); |
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1350 if (base->is_LocalVar()) { |
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1351 for (UseIterator j(base); j.has_next(); j.next()) { |
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1352 PointsToNode* f = j.get(); |
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1353 if (PointsToNode::is_base_use(f)) { // Field |
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1354 f = PointsToNode::get_use_node(f); |
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1355 if (f == field || !f->as_Field()->is_oop()) |
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1356 continue; |
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1357 int offs = f->as_Field()->offset(); |
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1358 if (offs == offset || offset == Type::OffsetBot || offs == Type::OffsetBot) { |
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1359 add_to_worklist(f); |
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1360 } |
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1361 } |
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1362 } |
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1363 } else { |
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1364 assert(base->is_JavaObject(), "sanity"); |
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1365 if (// Skip phantom_object since it is only used to indicate that |
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1366 // this field's content globally escapes. |
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1367 (base != phantom_obj) && |
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1368 // NULL object node does not have fields. |
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1369 (base != null_obj)) { |
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1370 for (EdgeIterator i(base); i.has_next(); i.next()) { |
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1371 PointsToNode* f = i.get(); |
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1372 // Skip arraycopy edge since store to destination object field |
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1373 // does not update value in source object field. |
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1374 if (f->is_Arraycopy()) { |
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1375 assert(base->arraycopy_dst(), "sanity"); |
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1376 continue; |
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1377 } |
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1378 if (f == field || !f->as_Field()->is_oop()) |
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1379 continue; |
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1380 int offs = f->as_Field()->offset(); |
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1381 if (offs == offset || offset == Type::OffsetBot || offs == Type::OffsetBot) { |
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1382 add_to_worklist(f); |
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1383 } |
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1384 } |
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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 // Find fields which have unknown value. |
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1390 int ConnectionGraph::find_field_value(FieldNode* field) { |
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1391 // Escaped fields should have init value already. |
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1392 assert(field->escape_state() == PointsToNode::NoEscape, "sanity"); |
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1393 int new_edges = 0; |
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1394 for (BaseIterator i(field); i.has_next(); i.next()) { |
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1395 PointsToNode* base = i.get(); |
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1396 if (base->is_JavaObject()) { |
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1397 // Skip Allocate's fields which will be processed later. |
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1398 if (base->ideal_node()->is_Allocate()) |
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1399 return 0; |
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1400 assert(base == null_obj, "only NULL ptr base expected here"); |
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1401 } |
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1402 } |
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1403 if (add_edge(field, phantom_obj)) { |
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1404 // New edge was added |
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1405 new_edges++; |
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1406 add_field_uses_to_worklist(field); |
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1407 } |
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1408 return new_edges; |
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1409 } |
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1410 |
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1411 // Find fields initializing values for allocations. |
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1412 int ConnectionGraph::find_init_values(JavaObjectNode* pta, PointsToNode* init_val, PhaseTransform* phase) { |
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1413 assert(pta->escape_state() == PointsToNode::NoEscape, "Not escaped Allocate nodes only"); |
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1414 int new_edges = 0; |
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1415 Node* alloc = pta->ideal_node(); |
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1416 if (init_val == phantom_obj) { |
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1417 // Do nothing for Allocate nodes since its fields values are "known". |
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1418 if (alloc->is_Allocate()) |
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1419 return 0; |
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1420 assert(alloc->as_CallStaticJava(), "sanity"); |
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1421 #ifdef ASSERT |
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1422 if (alloc->as_CallStaticJava()->method() == NULL) { |
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1423 const char* name = alloc->as_CallStaticJava()->_name; |
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1424 assert(strncmp(name, "_multianewarray", 15) == 0, "sanity"); |
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1425 } |
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1426 #endif |
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1427 // Non-escaped allocation returned from Java or runtime call have |
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1428 // unknown values in fields. |
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1429 for (EdgeIterator i(pta); i.has_next(); i.next()) { |
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1430 PointsToNode* field = i.get(); |
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1431 if (field->is_Field() && field->as_Field()->is_oop()) { |
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1432 if (add_edge(field, phantom_obj)) { |
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1433 // New edge was added |
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1434 new_edges++; |
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1435 add_field_uses_to_worklist(field->as_Field()); |
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1436 } |
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1437 } |
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1438 } |
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1439 return new_edges; |
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1440 } |
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1441 assert(init_val == null_obj, "sanity"); |
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1442 // Do nothing for Call nodes since its fields values are unknown. |
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1443 if (!alloc->is_Allocate()) |
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1444 return 0; |
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1445 |
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1446 InitializeNode* ini = alloc->as_Allocate()->initialization(); |
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1447 Compile* C = _compile; |
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1448 bool visited_bottom_offset = false; |
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1449 GrowableArray<int> offsets_worklist; |
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1450 |
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1451 // Check if an oop field's initializing value is recorded and add |
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1452 // a corresponding NULL if field's value if it is not recorded. |
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1453 // Connection Graph does not record a default initialization by NULL |
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1454 // captured by Initialize node. |
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1455 // |
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1456 for (EdgeIterator i(pta); i.has_next(); i.next()) { |
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1457 PointsToNode* field = i.get(); // Field (AddP) |
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1458 if (!field->is_Field() || !field->as_Field()->is_oop()) |
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1459 continue; // Not oop field |
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1460 int offset = field->as_Field()->offset(); |
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1461 if (offset == Type::OffsetBot) { |
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1462 if (!visited_bottom_offset) { |
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1463 // OffsetBot is used to reference array's element, |
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1464 // always add reference to NULL to all Field nodes since we don't |
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1465 // known which element is referenced. |
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1466 if (add_edge(field, null_obj)) { |
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1467 // New edge was added |
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1468 new_edges++; |
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1469 add_field_uses_to_worklist(field->as_Field()); |
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1470 visited_bottom_offset = true; |
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1471 } |
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1472 } |
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1473 } else { |
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1474 // Check only oop fields. |
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1475 const Type* adr_type = field->ideal_node()->as_AddP()->bottom_type(); |
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1476 if (adr_type->isa_rawptr()) { |
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1477 #ifdef ASSERT |
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1478 // Raw pointers are used for initializing stores so skip it |
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1479 // since it should be recorded already |
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1480 Node* base = get_addp_base(field->ideal_node()); |
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1481 assert(adr_type->isa_rawptr() && base->is_Proj() && |
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1482 (base->in(0) == alloc),"unexpected pointer type"); |
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1483 #endif |
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1484 continue; |
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1485 } |
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1486 if (!offsets_worklist.contains(offset)) { |
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1487 offsets_worklist.append(offset); |
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1488 Node* value = NULL; |
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1489 if (ini != NULL) { |
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1490 // StoreP::memory_type() == T_ADDRESS |
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1491 BasicType ft = UseCompressedOops ? T_NARROWOOP : T_ADDRESS; |
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1492 Node* store = ini->find_captured_store(offset, type2aelembytes(ft, true), phase); |
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1493 // Make sure initializing store has the same type as this AddP. |
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1494 // This AddP may reference non existing field because it is on a |
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1495 // dead branch of bimorphic call which is not eliminated yet. |
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1496 if (store != NULL && store->is_Store() && |
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1497 store->as_Store()->memory_type() == ft) { |
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1498 value = store->in(MemNode::ValueIn); |
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1499 #ifdef ASSERT |
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1500 if (VerifyConnectionGraph) { |
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1501 // Verify that AddP already points to all objects the value points to. |
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1502 PointsToNode* val = ptnode_adr(value->_idx); |
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1503 assert((val != NULL), "should be processed already"); |
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1504 PointsToNode* missed_obj = NULL; |
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1505 if (val->is_JavaObject()) { |
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1506 if (!field->points_to(val->as_JavaObject())) { |
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1507 missed_obj = val; |
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1508 } |
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1509 } else { |
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1510 if (!val->is_LocalVar() || (val->edge_count() == 0)) { |
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1511 tty->print_cr("----------init store has invalid value -----"); |
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1512 store->dump(); |
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1513 val->dump(); |
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1514 assert(val->is_LocalVar() && (val->edge_count() > 0), "should be processed already"); |
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1515 } |
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1516 for (EdgeIterator j(val); j.has_next(); j.next()) { |
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1517 PointsToNode* obj = j.get(); |
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1518 if (obj->is_JavaObject()) { |
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1519 if (!field->points_to(obj->as_JavaObject())) { |
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1520 missed_obj = obj; |
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1521 break; |
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1522 } |
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|
1523 } |
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|
1524 } |
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|
1525 } |
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|
1526 if (missed_obj != NULL) { |
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|
1527 tty->print_cr("----------field---------------------------------"); |
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|
1528 field->dump(); |
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|
1529 tty->print_cr("----------missed referernce to object-----------"); |
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|
1530 missed_obj->dump(); |
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|
1531 tty->print_cr("----------object referernced by init store -----"); |
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|
1532 store->dump(); |
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|
1533 val->dump(); |
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|
1534 assert(!field->points_to(missed_obj->as_JavaObject()), "missed JavaObject reference"); |
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|
1535 } |
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|
1536 } |
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|
1537 #endif |
5948
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|
1538 } else { |
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|
1539 // There could be initializing stores which follow allocation. |
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|
1540 // For example, a volatile field store is not collected |
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|
1541 // by Initialize node. |
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|
1542 // |
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|
1543 // Need to check for dependent loads to separate such stores from |
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1544 // stores which follow loads. For now, add initial value NULL so |
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1545 // that compare pointers optimization works correctly. |
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|
1546 } |
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|
1547 } |
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|
1548 if (value == NULL) { |
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|
1549 // A field's initializing value was not recorded. Add NULL. |
6944
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1550 if (add_edge(field, null_obj)) { |
5948
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|
1551 // New edge was added |
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|
1552 new_edges++; |
6944
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|
1553 add_field_uses_to_worklist(field->as_Field()); |
5948
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|
1554 } |
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|
1555 } |
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|
1556 } |
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|
1557 } |
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|
1558 } |
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|
1559 return new_edges; |
0 | 1560 } |
1561 | |
5948
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|
1562 // Adjust scalar_replaceable state after Connection Graph is built. |
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|
1563 void ConnectionGraph::adjust_scalar_replaceable_state(JavaObjectNode* jobj) { |
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|
1564 // Search for non-escaping objects which are not scalar replaceable |
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|
1565 // and mark them to propagate the state to referenced objects. |
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|
1566 |
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|
1567 // 1. An object is not scalar replaceable if the field into which it is |
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|
1568 // stored has unknown offset (stored into unknown element of an array). |
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|
1569 // |
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|
1570 for (UseIterator i(jobj); i.has_next(); i.next()) { |
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|
1571 PointsToNode* use = i.get(); |
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|
1572 assert(!use->is_Arraycopy(), "sanity"); |
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|
1573 if (use->is_Field()) { |
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|
1574 FieldNode* field = use->as_Field(); |
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|
1575 assert(field->is_oop() && field->scalar_replaceable() && |
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|
1576 field->fields_escape_state() == PointsToNode::NoEscape, "sanity"); |
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|
1577 if (field->offset() == Type::OffsetBot) { |
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|
1578 jobj->set_scalar_replaceable(false); |
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|
1579 return; |
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|
1580 } |
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|
1581 } |
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|
1582 assert(use->is_Field() || use->is_LocalVar(), "sanity"); |
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|
1583 // 2. An object is not scalar replaceable if it is merged with other objects. |
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|
1584 for (EdgeIterator j(use); j.has_next(); j.next()) { |
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|
1585 PointsToNode* ptn = j.get(); |
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|
1586 if (ptn->is_JavaObject() && ptn != jobj) { |
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|
1587 // Mark all objects. |
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|
1588 jobj->set_scalar_replaceable(false); |
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|
1589 ptn->set_scalar_replaceable(false); |
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|
1590 } |
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changeset
|
1591 } |
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|
1592 if (!jobj->scalar_replaceable()) { |
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|
1593 return; |
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|
1594 } |
ee138854b3a6
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|
1595 } |
ee138854b3a6
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|
1596 |
ee138854b3a6
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|
1597 for (EdgeIterator j(jobj); j.has_next(); j.next()) { |
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|
1598 // Non-escaping object node should point only to field nodes. |
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|
1599 FieldNode* field = j.get()->as_Field(); |
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|
1600 int offset = field->as_Field()->offset(); |
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|
1601 |
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|
1602 // 3. An object is not scalar replaceable if it has a field with unknown |
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|
1603 // offset (array's element is accessed in loop). |
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|
1604 if (offset == Type::OffsetBot) { |
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|
1605 jobj->set_scalar_replaceable(false); |
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|
1606 return; |
ee138854b3a6
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|
1607 } |
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|
1608 // 4. Currently an object is not scalar replaceable if a LoadStore node |
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|
1609 // access its field since the field value is unknown after it. |
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|
1610 // |
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|
1611 Node* n = field->ideal_node(); |
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|
1612 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
ee138854b3a6
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|
1613 if (n->fast_out(i)->is_LoadStore()) { |
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|
1614 jobj->set_scalar_replaceable(false); |
ee138854b3a6
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|
1615 return; |
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|
1616 } |
ee138854b3a6
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|
1617 } |
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|
1618 |
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|
1619 // 5. Or the address may point to more then one object. This may produce |
ee138854b3a6
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|
1620 // the false positive result (set not scalar replaceable) |
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|
1621 // since the flow-insensitive escape analysis can't separate |
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|
1622 // the case when stores overwrite the field's value from the case |
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|
1623 // when stores happened on different control branches. |
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|
1624 // |
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|
1625 // Note: it will disable scalar replacement in some cases: |
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|
1626 // |
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|
1627 // Point p[] = new Point[1]; |
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|
1628 // p[0] = new Point(); // Will be not scalar replaced |
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|
1629 // |
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|
1630 // but it will save us from incorrect optimizations in next cases: |
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|
1631 // |
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|
1632 // Point p[] = new Point[1]; |
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|
1633 // if ( x ) p[0] = new Point(); // Will be not scalar replaced |
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|
1634 // |
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|
1635 if (field->base_count() > 1) { |
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|
1636 for (BaseIterator i(field); i.has_next(); i.next()) { |
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|
1637 PointsToNode* base = i.get(); |
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|
1638 // Don't take into account LocalVar nodes which |
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|
1639 // may point to only one object which should be also |
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|
1640 // this field's base by now. |
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|
1641 if (base->is_JavaObject() && base != jobj) { |
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|
1642 // Mark all bases. |
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|
1643 jobj->set_scalar_replaceable(false); |
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|
1644 base->set_scalar_replaceable(false); |
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|
1645 } |
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|
1646 } |
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|
1647 } |
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1648 } |
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1649 } |
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1650 |
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1651 #ifdef ASSERT |
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1652 void ConnectionGraph::verify_connection_graph( |
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1653 GrowableArray<PointsToNode*>& ptnodes_worklist, |
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1654 GrowableArray<JavaObjectNode*>& non_escaped_worklist, |
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1655 GrowableArray<JavaObjectNode*>& java_objects_worklist, |
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1656 GrowableArray<Node*>& addp_worklist) { |
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1657 // Verify that graph is complete - no new edges could be added. |
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1658 int java_objects_length = java_objects_worklist.length(); |
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1659 int non_escaped_length = non_escaped_worklist.length(); |
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1660 int new_edges = 0; |
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1661 for (int next = 0; next < java_objects_length; ++next) { |
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1662 JavaObjectNode* ptn = java_objects_worklist.at(next); |
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1663 new_edges += add_java_object_edges(ptn, true); |
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1664 } |
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1665 assert(new_edges == 0, "graph was not complete"); |
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1666 // Verify that escape state is final. |
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1667 int length = non_escaped_worklist.length(); |
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1668 find_non_escaped_objects(ptnodes_worklist, non_escaped_worklist); |
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1669 assert((non_escaped_length == non_escaped_worklist.length()) && |
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1670 (non_escaped_length == length) && |
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1671 (_worklist.length() == 0), "escape state was not final"); |
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1672 |
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|
1673 // Verify fields information. |
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1674 int addp_length = addp_worklist.length(); |
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1675 for (int next = 0; next < addp_length; ++next ) { |
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1676 Node* n = addp_worklist.at(next); |
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1677 FieldNode* field = ptnode_adr(n->_idx)->as_Field(); |
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1678 if (field->is_oop()) { |
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1679 // Verify that field has all bases |
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1680 Node* base = get_addp_base(n); |
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1681 PointsToNode* ptn = ptnode_adr(base->_idx); |
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1682 if (ptn->is_JavaObject()) { |
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1683 assert(field->has_base(ptn->as_JavaObject()), "sanity"); |
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1684 } else { |
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1685 assert(ptn->is_LocalVar(), "sanity"); |
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1686 for (EdgeIterator i(ptn); i.has_next(); i.next()) { |
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1687 PointsToNode* e = i.get(); |
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1688 if (e->is_JavaObject()) { |
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1689 assert(field->has_base(e->as_JavaObject()), "sanity"); |
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1690 } |
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1691 } |
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|
1692 } |
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|
1693 // Verify that all fields have initializing values. |
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1694 if (field->edge_count() == 0) { |
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1695 tty->print_cr("----------field does not have references----------"); |
5948
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1696 field->dump(); |
6944
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1697 for (BaseIterator i(field); i.has_next(); i.next()) { |
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|
1698 PointsToNode* base = i.get(); |
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|
1699 tty->print_cr("----------field has next base---------------------"); |
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1700 base->dump(); |
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1701 if (base->is_JavaObject() && (base != phantom_obj) && (base != null_obj)) { |
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|
1702 tty->print_cr("----------base has fields-------------------------"); |
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1703 for (EdgeIterator j(base); j.has_next(); j.next()) { |
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1704 j.get()->dump(); |
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|
1705 } |
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|
1706 tty->print_cr("----------base has references---------------------"); |
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1707 for (UseIterator j(base); j.has_next(); j.next()) { |
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|
1708 j.get()->dump(); |
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|
1709 } |
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|
1710 } |
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|
1711 } |
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1712 for (UseIterator i(field); i.has_next(); i.next()) { |
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1713 i.get()->dump(); |
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|
1714 } |
5948
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1715 assert(field->edge_count() > 0, "sanity"); |
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1716 } |
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|
1717 } |
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1718 } |
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|
1719 } |
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|
1720 #endif |
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|
1721 |
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|
1722 // Optimize ideal graph. |
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|
1723 void ConnectionGraph::optimize_ideal_graph(GrowableArray<Node*>& ptr_cmp_worklist, |
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|
1724 GrowableArray<Node*>& storestore_worklist) { |
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|
1725 Compile* C = _compile; |
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|
1726 PhaseIterGVN* igvn = _igvn; |
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|
1727 if (EliminateLocks) { |
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|
1728 // Mark locks before changing ideal graph. |
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|
1729 int cnt = C->macro_count(); |
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|
1730 for( int i=0; i < cnt; i++ ) { |
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|
1731 Node *n = C->macro_node(i); |
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|
1732 if (n->is_AbstractLock()) { // Lock and Unlock nodes |
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|
1733 AbstractLockNode* alock = n->as_AbstractLock(); |
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1734 if (!alock->is_non_esc_obj()) { |
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|
1735 if (not_global_escape(alock->obj_node())) { |
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|
1736 assert(!alock->is_eliminated() || alock->is_coarsened(), "sanity"); |
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|
1737 // The lock could be marked eliminated by lock coarsening |
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|
1738 // code during first IGVN before EA. Replace coarsened flag |
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|
1739 // to eliminate all associated locks/unlocks. |
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|
1740 alock->set_non_esc_obj(); |
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|
1741 } |
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1742 } |
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|
1743 } |
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|
1744 } |
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|
1745 } |
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|
1746 |
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|
1747 if (OptimizePtrCompare) { |
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|
1748 // Add ConI(#CC_GT) and ConI(#CC_EQ). |
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|
1749 _pcmp_neq = igvn->makecon(TypeInt::CC_GT); |
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|
1750 _pcmp_eq = igvn->makecon(TypeInt::CC_EQ); |
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|
1751 // Optimize objects compare. |
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|
1752 while (ptr_cmp_worklist.length() != 0) { |
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|
1753 Node *n = ptr_cmp_worklist.pop(); |
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|
1754 Node *res = optimize_ptr_compare(n); |
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|
1755 if (res != NULL) { |
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|
1756 #ifndef PRODUCT |
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|
1757 if (PrintOptimizePtrCompare) { |
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1758 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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|
1759 if (Verbose) { |
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|
1760 n->dump(1); |
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|
1761 } |
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|
1762 } |
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|
1763 #endif |
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|
1764 igvn->replace_node(n, res); |
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1765 } |
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|
1766 } |
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1767 // cleanup |
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1768 if (_pcmp_neq->outcnt() == 0) |
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1769 igvn->hash_delete(_pcmp_neq); |
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1770 if (_pcmp_eq->outcnt() == 0) |
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1771 igvn->hash_delete(_pcmp_eq); |
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1772 } |
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|
1773 |
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1774 // For MemBarStoreStore nodes added in library_call.cpp, check |
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1775 // escape status of associated AllocateNode and optimize out |
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1776 // MemBarStoreStore node if the allocated object never escapes. |
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1777 while (storestore_worklist.length() != 0) { |
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1778 Node *n = storestore_worklist.pop(); |
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1779 MemBarStoreStoreNode *storestore = n ->as_MemBarStoreStore(); |
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1780 Node *alloc = storestore->in(MemBarNode::Precedent)->in(0); |
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1781 assert (alloc->is_Allocate(), "storestore should point to AllocateNode"); |
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1782 if (not_global_escape(alloc)) { |
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1783 MemBarNode* mb = MemBarNode::make(C, Op_MemBarCPUOrder, Compile::AliasIdxBot); |
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1784 mb->init_req(TypeFunc::Memory, storestore->in(TypeFunc::Memory)); |
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1785 mb->init_req(TypeFunc::Control, storestore->in(TypeFunc::Control)); |
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1786 igvn->register_new_node_with_optimizer(mb); |
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1787 igvn->replace_node(storestore, mb); |
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1788 } |
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1789 } |
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1790 } |
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1791 |
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1792 // Optimize objects compare. |
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1793 Node* ConnectionGraph::optimize_ptr_compare(Node* n) { |
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1794 assert(OptimizePtrCompare, "sanity"); |
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1795 PointsToNode* ptn1 = ptnode_adr(n->in(1)->_idx); |
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1796 PointsToNode* ptn2 = ptnode_adr(n->in(2)->_idx); |
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1797 JavaObjectNode* jobj1 = unique_java_object(n->in(1)); |
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1798 JavaObjectNode* jobj2 = unique_java_object(n->in(2)); |
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1799 assert(ptn1->is_JavaObject() || ptn1->is_LocalVar(), "sanity"); |
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1800 assert(ptn2->is_JavaObject() || ptn2->is_LocalVar(), "sanity"); |
0 | 1801 |
5948
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1802 // Check simple cases first. |
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1803 if (jobj1 != NULL) { |
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1804 if (jobj1->escape_state() == PointsToNode::NoEscape) { |
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1805 if (jobj1 == jobj2) { |
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1806 // Comparing the same not escaping object. |
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1807 return _pcmp_eq; |
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1808 } |
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1809 Node* obj = jobj1->ideal_node(); |
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1810 // Comparing not escaping allocation. |
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1811 if ((obj->is_Allocate() || obj->is_CallStaticJava()) && |
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1812 !ptn2->points_to(jobj1)) { |
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1813 return _pcmp_neq; // This includes nullness check. |
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1814 } |
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1815 } |
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1816 } |
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1817 if (jobj2 != NULL) { |
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1818 if (jobj2->escape_state() == PointsToNode::NoEscape) { |
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1819 Node* obj = jobj2->ideal_node(); |
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1820 // Comparing not escaping allocation. |
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1821 if ((obj->is_Allocate() || obj->is_CallStaticJava()) && |
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1822 !ptn1->points_to(jobj2)) { |
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1823 return _pcmp_neq; // This includes nullness check. |
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1824 } |
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1825 } |
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1826 } |
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1827 if (jobj1 != NULL && jobj1 != phantom_obj && |
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1828 jobj2 != NULL && jobj2 != phantom_obj && |
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1829 jobj1->ideal_node()->is_Con() && |
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1830 jobj2->ideal_node()->is_Con()) { |
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1831 // Klass or String constants compare. Need to be careful with |
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1832 // compressed pointers - compare types of ConN and ConP instead of nodes. |
10279
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|
1833 const Type* t1 = jobj1->ideal_node()->get_ptr_type(); |
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1834 const Type* t2 = jobj2->ideal_node()->get_ptr_type(); |
5948
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1835 if (t1->make_ptr() == t2->make_ptr()) { |
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1836 return _pcmp_eq; |
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1837 } else { |
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1838 return _pcmp_neq; |
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1839 } |
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1840 } |
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1841 if (ptn1->meet(ptn2)) { |
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1842 return NULL; // Sets are not disjoint |
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1843 } |
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1844 |
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1845 // Sets are disjoint. |
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1846 bool set1_has_unknown_ptr = ptn1->points_to(phantom_obj); |
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1847 bool set2_has_unknown_ptr = ptn2->points_to(phantom_obj); |
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1848 bool set1_has_null_ptr = ptn1->points_to(null_obj); |
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1849 bool set2_has_null_ptr = ptn2->points_to(null_obj); |
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1850 if (set1_has_unknown_ptr && set2_has_null_ptr || |
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1851 set2_has_unknown_ptr && set1_has_null_ptr) { |
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1852 // Check nullness of unknown object. |
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1853 return NULL; |
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1854 } |
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1855 |
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1856 // Disjointness by itself is not sufficient since |
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1857 // alias analysis is not complete for escaped objects. |
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1858 // Disjoint sets are definitely unrelated only when |
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1859 // at least one set has only not escaping allocations. |
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1860 if (!set1_has_unknown_ptr && !set1_has_null_ptr) { |
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1861 if (ptn1->non_escaping_allocation()) { |
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1862 return _pcmp_neq; |
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1863 } |
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1864 } |
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1865 if (!set2_has_unknown_ptr && !set2_has_null_ptr) { |
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1866 if (ptn2->non_escaping_allocation()) { |
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1867 return _pcmp_neq; |
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1868 } |
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1869 } |
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1870 return NULL; |
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1871 } |
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1872 |
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1873 // Connection Graph constuction functions. |
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1874 |
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1875 void ConnectionGraph::add_local_var(Node *n, PointsToNode::EscapeState es) { |
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1876 PointsToNode* ptadr = _nodes.at(n->_idx); |
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1877 if (ptadr != NULL) { |
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1878 assert(ptadr->is_LocalVar() && ptadr->ideal_node() == n, "sanity"); |
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1879 return; |
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1880 } |
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1881 Compile* C = _compile; |
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1882 ptadr = new (C->comp_arena()) LocalVarNode(C, n, es); |
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1883 _nodes.at_put(n->_idx, ptadr); |
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1884 } |
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1885 |
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1886 void ConnectionGraph::add_java_object(Node *n, PointsToNode::EscapeState es) { |
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|
1887 PointsToNode* ptadr = _nodes.at(n->_idx); |
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1888 if (ptadr != NULL) { |
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1889 assert(ptadr->is_JavaObject() && ptadr->ideal_node() == n, "sanity"); |
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1890 return; |
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1891 } |
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1892 Compile* C = _compile; |
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1893 ptadr = new (C->comp_arena()) JavaObjectNode(C, n, es); |
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1894 _nodes.at_put(n->_idx, ptadr); |
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1895 } |
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1896 |
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1897 void ConnectionGraph::add_field(Node *n, PointsToNode::EscapeState es, int offset) { |
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1898 PointsToNode* ptadr = _nodes.at(n->_idx); |
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1899 if (ptadr != NULL) { |
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1900 assert(ptadr->is_Field() && ptadr->ideal_node() == n, "sanity"); |
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1901 return; |
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1902 } |
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1903 bool unsafe = false; |
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1904 bool is_oop = is_oop_field(n, offset, &unsafe); |
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1905 if (unsafe) { |
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1906 es = PointsToNode::GlobalEscape; |
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1907 } |
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1908 Compile* C = _compile; |
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1909 FieldNode* field = new (C->comp_arena()) FieldNode(C, n, es, offset, is_oop); |
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1910 _nodes.at_put(n->_idx, field); |
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1911 } |
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1912 |
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1913 void ConnectionGraph::add_arraycopy(Node *n, PointsToNode::EscapeState es, |
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1914 PointsToNode* src, PointsToNode* dst) { |
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1915 assert(!src->is_Field() && !dst->is_Field(), "only for JavaObject and LocalVar"); |
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1916 assert((src != null_obj) && (dst != null_obj), "not for ConP NULL"); |
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1917 PointsToNode* ptadr = _nodes.at(n->_idx); |
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1918 if (ptadr != NULL) { |
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1919 assert(ptadr->is_Arraycopy() && ptadr->ideal_node() == n, "sanity"); |
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1920 return; |
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1921 } |
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1922 Compile* C = _compile; |
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1923 ptadr = new (C->comp_arena()) ArraycopyNode(C, n, es); |
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1924 _nodes.at_put(n->_idx, ptadr); |
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1925 // Add edge from arraycopy node to source object. |
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1926 (void)add_edge(ptadr, src); |
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1927 src->set_arraycopy_src(); |
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1928 // Add edge from destination object to arraycopy node. |
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1929 (void)add_edge(dst, ptadr); |
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1930 dst->set_arraycopy_dst(); |
0 | 1931 } |
1932 | |
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1933 bool ConnectionGraph::is_oop_field(Node* n, int offset, bool* unsafe) { |
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1934 const Type* adr_type = n->as_AddP()->bottom_type(); |
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1935 BasicType bt = T_INT; |
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1936 if (offset == Type::OffsetBot) { |
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1937 // Check only oop fields. |
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1938 if (!adr_type->isa_aryptr() || |
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1939 (adr_type->isa_aryptr()->klass() == NULL) || |
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1940 adr_type->isa_aryptr()->klass()->is_obj_array_klass()) { |
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1941 // OffsetBot is used to reference array's element. Ignore first AddP. |
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1942 if (find_second_addp(n, n->in(AddPNode::Base)) == NULL) { |
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1943 bt = T_OBJECT; |
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1944 } |
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1945 } |
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1946 } else if (offset != oopDesc::klass_offset_in_bytes()) { |
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1947 if (adr_type->isa_instptr()) { |
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1948 ciField* field = _compile->alias_type(adr_type->isa_instptr())->field(); |
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1949 if (field != NULL) { |
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1950 bt = field->layout_type(); |
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1951 } else { |
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1952 // Check for unsafe oop field access |
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1953 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
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1954 int opcode = n->fast_out(i)->Opcode(); |
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1955 if (opcode == Op_StoreP || opcode == Op_LoadP || |
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1956 opcode == Op_StoreN || opcode == Op_LoadN) { |
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1957 bt = T_OBJECT; |
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1958 (*unsafe) = true; |
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1959 break; |
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|
1960 } |
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1961 } |
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1962 } |
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1963 } else if (adr_type->isa_aryptr()) { |
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1964 if (offset == arrayOopDesc::length_offset_in_bytes()) { |
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1965 // Ignore array length load. |
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1966 } else if (find_second_addp(n, n->in(AddPNode::Base)) != NULL) { |
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1967 // Ignore first AddP. |
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1968 } else { |
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1969 const Type* elemtype = adr_type->isa_aryptr()->elem(); |
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1970 bt = elemtype->array_element_basic_type(); |
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1971 } |
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1972 } else if (adr_type->isa_rawptr() || adr_type->isa_klassptr()) { |
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1973 // Allocation initialization, ThreadLocal field access, unsafe access |
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1974 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
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1975 int opcode = n->fast_out(i)->Opcode(); |
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1976 if (opcode == Op_StoreP || opcode == Op_LoadP || |
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1977 opcode == Op_StoreN || opcode == Op_LoadN) { |
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1978 bt = T_OBJECT; |
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1979 break; |
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1980 } |
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1981 } |
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1982 } |
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1983 } |
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1984 return (bt == T_OBJECT || bt == T_NARROWOOP || bt == T_ARRAY); |
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1985 } |
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1986 |
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1987 // Returns unique pointed java object or NULL. |
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1988 JavaObjectNode* ConnectionGraph::unique_java_object(Node *n) { |
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1989 assert(!_collecting, "should not call when contructed graph"); |
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1990 // If the node was created after the escape computation we can't answer. |
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1991 uint idx = n->_idx; |
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1992 if (idx >= nodes_size()) { |
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1993 return NULL; |
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1994 } |
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1995 PointsToNode* ptn = ptnode_adr(idx); |
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1996 if (ptn->is_JavaObject()) { |
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1997 return ptn->as_JavaObject(); |
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1998 } |
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1999 assert(ptn->is_LocalVar(), "sanity"); |
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2000 // Check all java objects it points to. |
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2001 JavaObjectNode* jobj = NULL; |
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2002 for (EdgeIterator i(ptn); i.has_next(); i.next()) { |
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2003 PointsToNode* e = i.get(); |
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2004 if (e->is_JavaObject()) { |
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2005 if (jobj == NULL) { |
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2006 jobj = e->as_JavaObject(); |
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2007 } else if (jobj != e) { |
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2008 return NULL; |
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2009 } |
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2010 } |
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2011 } |
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2012 return jobj; |
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2013 } |
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2014 |
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2015 // Return true if this node points only to non-escaping allocations. |
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2016 bool PointsToNode::non_escaping_allocation() { |
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2017 if (is_JavaObject()) { |
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2018 Node* n = ideal_node(); |
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2019 if (n->is_Allocate() || n->is_CallStaticJava()) { |
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2020 return (escape_state() == PointsToNode::NoEscape); |
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2021 } else { |
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2022 return false; |
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2023 } |
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2024 } |
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2025 assert(is_LocalVar(), "sanity"); |
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2026 // Check all java objects it points to. |
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2027 for (EdgeIterator i(this); i.has_next(); i.next()) { |
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2028 PointsToNode* e = i.get(); |
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2029 if (e->is_JavaObject()) { |
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2030 Node* n = e->ideal_node(); |
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2031 if ((e->escape_state() != PointsToNode::NoEscape) || |
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2032 !(n->is_Allocate() || n->is_CallStaticJava())) { |
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2033 return false; |
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2034 } |
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2035 } |
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2036 } |
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2037 return true; |
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2038 } |
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2039 |
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2040 // Return true if we know the node does not escape globally. |
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2041 bool ConnectionGraph::not_global_escape(Node *n) { |
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2042 assert(!_collecting, "should not call during graph construction"); |
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2043 // If the node was created after the escape computation we can't answer. |
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2044 uint idx = n->_idx; |
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2045 if (idx >= nodes_size()) { |
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2046 return false; |
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2047 } |
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2048 PointsToNode* ptn = ptnode_adr(idx); |
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2049 PointsToNode::EscapeState es = ptn->escape_state(); |
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2050 // If we have already computed a value, return it. |
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2051 if (es >= PointsToNode::GlobalEscape) |
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2052 return false; |
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2053 if (ptn->is_JavaObject()) { |
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2054 return true; // (es < PointsToNode::GlobalEscape); |
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2055 } |
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2056 assert(ptn->is_LocalVar(), "sanity"); |
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2057 // Check all java objects it points to. |
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2058 for (EdgeIterator i(ptn); i.has_next(); i.next()) { |
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2059 if (i.get()->escape_state() >= PointsToNode::GlobalEscape) |
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2060 return false; |
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2061 } |
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2062 return true; |
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2063 } |
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2064 |
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2065 |
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2066 // Helper functions |
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2067 |
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2068 // Return true if this node points to specified node or nodes it points to. |
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2069 bool PointsToNode::points_to(JavaObjectNode* ptn) const { |
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2070 if (is_JavaObject()) { |
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2071 return (this == ptn); |
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2072 } |
6944
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2073 assert(is_LocalVar() || is_Field(), "sanity"); |
5948
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2074 for (EdgeIterator i(this); i.has_next(); i.next()) { |
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2075 if (i.get() == ptn) |
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2076 return true; |
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|
2077 } |
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2078 return false; |
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|
2079 } |
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2080 |
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2081 // Return true if one node points to an other. |
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2082 bool PointsToNode::meet(PointsToNode* ptn) { |
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2083 if (this == ptn) { |
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2084 return true; |
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2085 } else if (ptn->is_JavaObject()) { |
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2086 return this->points_to(ptn->as_JavaObject()); |
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2087 } else if (this->is_JavaObject()) { |
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2088 return ptn->points_to(this->as_JavaObject()); |
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2089 } |
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2090 assert(this->is_LocalVar() && ptn->is_LocalVar(), "sanity"); |
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2091 int ptn_count = ptn->edge_count(); |
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2092 for (EdgeIterator i(this); i.has_next(); i.next()) { |
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2093 PointsToNode* this_e = i.get(); |
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2094 for (int j = 0; j < ptn_count; j++) { |
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2095 if (this_e == ptn->edge(j)) |
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2096 return true; |
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|
2097 } |
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|
2098 } |
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2099 return false; |
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|
2100 } |
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|
2101 |
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|
2102 #ifdef ASSERT |
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2103 // Return true if bases point to this java object. |
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2104 bool FieldNode::has_base(JavaObjectNode* jobj) const { |
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2105 for (BaseIterator i(this); i.has_next(); i.next()) { |
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2106 if (i.get() == jobj) |
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2107 return true; |
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2108 } |
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2109 return false; |
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2110 } |
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2111 #endif |
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2112 |
65 | 2113 int ConnectionGraph::address_offset(Node* adr, PhaseTransform *phase) { |
2114 const Type *adr_type = phase->type(adr); | |
2115 if (adr->is_AddP() && adr_type->isa_oopptr() == NULL && | |
2116 adr->in(AddPNode::Address)->is_Proj() && | |
2117 adr->in(AddPNode::Address)->in(0)->is_Allocate()) { | |
2118 // We are computing a raw address for a store captured by an Initialize | |
2119 // compute an appropriate address type. AddP cases #3 and #5 (see below). | |
2120 int offs = (int)phase->find_intptr_t_con(adr->in(AddPNode::Offset), Type::OffsetBot); | |
2121 assert(offs != Type::OffsetBot || | |
2122 adr->in(AddPNode::Address)->in(0)->is_AllocateArray(), | |
2123 "offset must be a constant or it is initialization of array"); | |
2124 return offs; | |
2125 } | |
2126 const TypePtr *t_ptr = adr_type->isa_ptr(); | |
0 | 2127 assert(t_ptr != NULL, "must be a pointer type"); |
2128 return t_ptr->offset(); | |
2129 } | |
2130 | |
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2131 Node* ConnectionGraph::get_addp_base(Node *addp) { |
65 | 2132 assert(addp->is_AddP(), "must be AddP"); |
2133 // | |
2134 // AddP cases for Base and Address inputs: | |
2135 // case #1. Direct object's field reference: | |
2136 // Allocate | |
2137 // | | |
2138 // Proj #5 ( oop result ) | |
2139 // | | |
2140 // CheckCastPP (cast to instance type) | |
2141 // | | | |
2142 // AddP ( base == address ) | |
2143 // | |
2144 // case #2. Indirect object's field reference: | |
2145 // Phi | |
2146 // | | |
2147 // CastPP (cast to instance type) | |
2148 // | | | |
2149 // AddP ( base == address ) | |
2150 // | |
2151 // case #3. Raw object's field reference for Initialize node: | |
2152 // Allocate | |
2153 // | | |
2154 // Proj #5 ( oop result ) | |
2155 // top | | |
2156 // \ | | |
2157 // AddP ( base == top ) | |
2158 // | |
2159 // case #4. Array's element reference: | |
2160 // {CheckCastPP | CastPP} | |
2161 // | | | | |
2162 // | AddP ( array's element offset ) | |
2163 // | | | |
2164 // AddP ( array's offset ) | |
2165 // | |
2166 // case #5. Raw object's field reference for arraycopy stub call: | |
2167 // The inline_native_clone() case when the arraycopy stub is called | |
2168 // after the allocation before Initialize and CheckCastPP nodes. | |
2169 // Allocate | |
2170 // | | |
2171 // Proj #5 ( oop result ) | |
2172 // | | | |
2173 // AddP ( base == address ) | |
2174 // | |
77 | 2175 // case #6. Constant Pool, ThreadLocal, CastX2P or |
2176 // Raw object's field reference: | |
2177 // {ConP, ThreadLocal, CastX2P, raw Load} | |
65 | 2178 // top | |
2179 // \ | | |
2180 // AddP ( base == top ) | |
2181 // | |
77 | 2182 // case #7. Klass's field reference. |
2183 // LoadKlass | |
2184 // | | | |
2185 // AddP ( base == address ) | |
2186 // | |
164
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2187 // case #8. narrow Klass's field reference. |
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2188 // LoadNKlass |
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2189 // | |
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2190 // DecodeN |
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2191 // | | |
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|
2192 // AddP ( base == address ) |
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
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|
2193 // |
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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|
2194 Node *base = addp->in(AddPNode::Base); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
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|
2195 if (base->uncast()->is_top()) { // The AddP case #3 and #6. |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
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|
2196 base = addp->in(AddPNode::Address); |
957 | 2197 while (base->is_AddP()) { |
2198 // Case #6 (unsafe access) may have several chained AddP nodes. | |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
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|
2199 assert(base->in(AddPNode::Base)->uncast()->is_top(), "expected unsafe access address only"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2200 base = base->in(AddPNode::Address); |
957 | 2201 } |
5948
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kvn
parents:
5901
diff
changeset
|
2202 Node* uncast_base = base->uncast(); |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
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|
2203 int opcode = uncast_base->Opcode(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
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|
2204 assert(opcode == Op_ConP || opcode == Op_ThreadLocal || |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
2205 opcode == Op_CastX2P || uncast_base->is_DecodeNarrowPtr() || |
10391
83dcb116fdb1
8015441: runThese crashed with assert(opcode == Op_ConP || opcode == Op_ThreadLocal || opcode == Op_CastX2P ..) failed: sanity
kvn
parents:
10281
diff
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|
2206 (uncast_base->is_Mem() && (uncast_base->bottom_type()->isa_rawptr() != NULL)) || |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2207 (uncast_base->is_Proj() && uncast_base->in(0)->is_Allocate()), "sanity"); |
0 | 2208 } |
65 | 2209 return base; |
2210 } | |
2211 | |
5948
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kvn
parents:
5901
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|
2212 Node* ConnectionGraph::find_second_addp(Node* addp, Node* n) { |
65 | 2213 assert(addp->is_AddP() && addp->outcnt() > 0, "Don't process dead nodes"); |
2214 Node* addp2 = addp->raw_out(0); | |
2215 if (addp->outcnt() == 1 && addp2->is_AddP() && | |
2216 addp2->in(AddPNode::Base) == n && | |
2217 addp2->in(AddPNode::Address) == addp) { | |
2218 assert(addp->in(AddPNode::Base) == n, "expecting the same base"); | |
2219 // | |
2220 // Find array's offset to push it on worklist first and | |
2221 // as result process an array's element offset first (pushed second) | |
2222 // to avoid CastPP for the array's offset. | |
2223 // Otherwise the inserted CastPP (LocalVar) will point to what | |
2224 // the AddP (Field) points to. Which would be wrong since | |
2225 // the algorithm expects the CastPP has the same point as | |
2226 // as AddP's base CheckCastPP (LocalVar). | |
2227 // | |
2228 // ArrayAllocation | |
2229 // | | |
2230 // CheckCastPP | |
2231 // | | |
2232 // memProj (from ArrayAllocation CheckCastPP) | |
2233 // | || | |
2234 // | || Int (element index) | |
2235 // | || | ConI (log(element size)) | |
2236 // | || | / | |
2237 // | || LShift | |
2238 // | || / | |
2239 // | AddP (array's element offset) | |
2240 // | | | |
2241 // | | ConI (array's offset: #12(32-bits) or #24(64-bits)) | |
2242 // | / / | |
2243 // AddP (array's offset) | |
2244 // | | |
2245 // Load/Store (memory operation on array's element) | |
2246 // | |
2247 return addp2; | |
2248 } | |
2249 return NULL; | |
0 | 2250 } |
2251 | |
2252 // | |
2253 // Adjust the type and inputs of an AddP which computes the | |
2254 // address of a field of an instance | |
2255 // | |
5948
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kvn
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5901
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|
2256 bool ConnectionGraph::split_AddP(Node *addp, Node *base) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
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|
2257 PhaseGVN* igvn = _igvn; |
65 | 2258 const TypeOopPtr *base_t = igvn->type(base)->isa_oopptr(); |
223 | 2259 assert(base_t != NULL && base_t->is_known_instance(), "expecting instance oopptr"); |
0 | 2260 const TypeOopPtr *t = igvn->type(addp)->isa_oopptr(); |
65 | 2261 if (t == NULL) { |
2262 // We are computing a raw address for a store captured by an Initialize | |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
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253
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|
2263 // compute an appropriate address type (cases #3 and #5). |
65 | 2264 assert(igvn->type(addp) == TypeRawPtr::NOTNULL, "must be raw pointer"); |
2265 assert(addp->in(AddPNode::Address)->is_Proj(), "base of raw address must be result projection from allocation"); | |
306
af945ba2e739
6741738: TypePtr::add_offset() set incorrect offset when the add overflows
kvn
parents:
293
diff
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|
2266 intptr_t offs = (int)igvn->find_intptr_t_con(addp->in(AddPNode::Offset), Type::OffsetBot); |
65 | 2267 assert(offs != Type::OffsetBot, "offset must be a constant"); |
2268 t = base_t->add_offset(offs)->is_oopptr(); | |
2269 } | |
223 | 2270 int inst_id = base_t->instance_id(); |
2271 assert(!t->is_known_instance() || t->instance_id() == inst_id, | |
0 | 2272 "old type must be non-instance or match new type"); |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
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|
2273 |
c3e045194476
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|
2274 // The type 't' could be subclass of 'base_t'. |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
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|
2275 // As result t->offset() could be large then base_t's size and it will |
c3e045194476
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|
2276 // cause the failure in add_offset() with narrow oops since TypeOopPtr() |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
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|
2277 // constructor verifies correctness of the offset. |
c3e045194476
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|
2278 // |
605 | 2279 // It could happened on subclass's branch (from the type profiling |
293
c3e045194476
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|
2280 // inlining) which was not eliminated during parsing since the exactness |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
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|
2281 // of the allocation type was not propagated to the subclass type check. |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
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|
2282 // |
988
7e309ecb83ce
6879362: assert(!klass_is_exact(),"only non-exact klass")
kvn
parents:
957
diff
changeset
|
2283 // Or the type 't' could be not related to 'base_t' at all. |
7e309ecb83ce
6879362: assert(!klass_is_exact(),"only non-exact klass")
kvn
parents:
957
diff
changeset
|
2284 // It could happened when CHA type is different from MDO type on a dead path |
7e309ecb83ce
6879362: assert(!klass_is_exact(),"only non-exact klass")
kvn
parents:
957
diff
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|
2285 // (for example, from instanceof check) which is not collapsed during parsing. |
7e309ecb83ce
6879362: assert(!klass_is_exact(),"only non-exact klass")
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|
2286 // |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
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|
2287 // Do nothing for such AddP node and don't process its users since |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
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|
2288 // this code branch will go away. |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
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|
2289 // |
c3e045194476
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2290 if (!t->is_known_instance() && |
988
7e309ecb83ce
6879362: assert(!klass_is_exact(),"only non-exact klass")
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diff
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|
2291 !base_t->klass()->is_subtype_of(t->klass())) { |
293
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
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|
2292 return false; // bail out |
c3e045194476
6731641: assert(m->adr_type() == mach->adr_type(),"matcher should not change adr type")
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|
2293 } |
0 | 2294 const TypeOopPtr *tinst = base_t->add_offset(t->offset())->is_oopptr(); |
1062
dcdcc8c16e20
6896352: CTW fails hotspot/src/share/vm/opto/escape.cpp:1155
kvn
parents:
988
diff
changeset
|
2295 // Do NOT remove the next line: ensure a new alias index is allocated |
dcdcc8c16e20
6896352: CTW fails hotspot/src/share/vm/opto/escape.cpp:1155
kvn
parents:
988
diff
changeset
|
2296 // for the instance type. Note: C++ will not remove it since the call |
dcdcc8c16e20
6896352: CTW fails hotspot/src/share/vm/opto/escape.cpp:1155
kvn
parents:
988
diff
changeset
|
2297 // has side effect. |
0 | 2298 int alias_idx = _compile->get_alias_index(tinst); |
2299 igvn->set_type(addp, tinst); | |
2300 // record the allocation in the node map | |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
2301 set_map(addp, get_map(base->_idx)); |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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|
2302 // Set addp's Base and Address to 'base'. |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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|
2303 Node *abase = addp->in(AddPNode::Base); |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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|
2304 Node *adr = addp->in(AddPNode::Address); |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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|
2305 if (adr->is_Proj() && adr->in(0)->is_Allocate() && |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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diff
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|
2306 adr->in(0)->_idx == (uint)inst_id) { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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diff
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|
2307 // Skip AddP cases #3 and #5. |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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247
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|
2308 } else { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
247
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|
2309 assert(!abase->is_top(), "sanity"); // AddP case #3 |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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|
2310 if (abase != base) { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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|
2311 igvn->hash_delete(addp); |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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diff
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|
2312 addp->set_req(AddPNode::Base, base); |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
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|
2313 if (abase == adr) { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
2314 addp->set_req(AddPNode::Address, base); |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
2315 } else { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
2316 // AddP case #4 (adr is array's element offset AddP node) |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
2317 #ifdef ASSERT |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
2318 const TypeOopPtr *atype = igvn->type(adr)->isa_oopptr(); |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
2319 assert(adr->is_AddP() && atype != NULL && |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
2320 atype->instance_id() == inst_id, "array's element offset should be processed first"); |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
2321 #endif |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
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|
2322 } |
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|
2323 igvn->hash_insert(addp); |
0 | 2324 } |
2325 } | |
65 | 2326 // Put on IGVN worklist since at least addp's type was changed above. |
2327 record_for_optimizer(addp); | |
293
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|
2328 return true; |
0 | 2329 } |
2330 | |
2331 // | |
2332 // Create a new version of orig_phi if necessary. Returns either the newly | |
2459
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
parents:
2249
diff
changeset
|
2333 // created phi or an existing phi. Sets create_new to indicate whether a new |
0 | 2334 // phi was created. Cache the last newly created phi in the node map. |
2335 // | |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
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|
2336 PhiNode *ConnectionGraph::create_split_phi(PhiNode *orig_phi, int alias_idx, GrowableArray<PhiNode *> &orig_phi_worklist, bool &new_created) { |
0 | 2337 Compile *C = _compile; |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
2338 PhaseGVN* igvn = _igvn; |
0 | 2339 new_created = false; |
2340 int phi_alias_idx = C->get_alias_index(orig_phi->adr_type()); | |
2341 // nothing to do if orig_phi is bottom memory or matches alias_idx | |
65 | 2342 if (phi_alias_idx == alias_idx) { |
0 | 2343 return orig_phi; |
2344 } | |
851
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
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|
2345 // Have we recently created a Phi for this alias index? |
0 | 2346 PhiNode *result = get_map_phi(orig_phi->_idx); |
2347 if (result != NULL && C->get_alias_index(result->adr_type()) == alias_idx) { | |
2348 return result; | |
2349 } | |
851
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
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|
2350 // 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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|
2351 // 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
diff
changeset
|
2352 if (result != NULL) { |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
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784
diff
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|
2353 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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changeset
|
2354 for (DUIterator_Fast imax, i = region->fast_outs(imax); i < imax; i++) { |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
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|
2355 Node* phi = region->fast_out(i); |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
diff
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|
2356 if (phi->is_Phi() && |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
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changeset
|
2357 C->get_alias_index(phi->as_Phi()->adr_type()) == alias_idx) { |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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|
2358 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
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|
2359 return phi->as_Phi(); |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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784
diff
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|
2360 } |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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|
2361 } |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
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|
2362 } |
7196
2aff40cb4703
7092905: C2: Keep track of the number of dead nodes
bharadwaj
parents:
6944
diff
changeset
|
2363 if ((int) (C->live_nodes() + 2*NodeLimitFudgeFactor) > MaxNodeLimit) { |
38
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
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|
2364 if (C->do_escape_analysis() == true && !C->failing()) { |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
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0
diff
changeset
|
2365 // Retry compilation without escape analysis. |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
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0
diff
changeset
|
2366 // If this is the first failure, the sentinel string will "stick" |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
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0
diff
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|
2367 // to the Compile object, and the C2Compiler will see it and retry. |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
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0
diff
changeset
|
2368 C->record_failure(C2Compiler::retry_no_escape_analysis()); |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
2369 } |
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diff
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|
2370 return NULL; |
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0
diff
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|
2371 } |
0 | 2372 orig_phi_worklist.append_if_missing(orig_phi); |
65 | 2373 const TypePtr *atype = C->get_adr_type(alias_idx); |
0 | 2374 result = PhiNode::make(orig_phi->in(0), NULL, Type::MEMORY, atype); |
851
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
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diff
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|
2375 C->copy_node_notes_to(result, orig_phi); |
0 | 2376 igvn->set_type(result, result->bottom_type()); |
2377 record_for_optimizer(result); | |
5948
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|
2378 set_map(orig_phi, result); |
0 | 2379 new_created = true; |
2380 return result; | |
2381 } | |
2382 | |
2383 // | |
2459
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
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diff
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|
2384 // Return a new version of Memory Phi "orig_phi" with the inputs having the |
0 | 2385 // specified alias index. |
2386 // | |
5948
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diff
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|
2387 PhiNode *ConnectionGraph::split_memory_phi(PhiNode *orig_phi, int alias_idx, GrowableArray<PhiNode *> &orig_phi_worklist) { |
0 | 2388 assert(alias_idx != Compile::AliasIdxBot, "can't split out bottom memory"); |
2389 Compile *C = _compile; | |
5948
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diff
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|
2390 PhaseGVN* igvn = _igvn; |
0 | 2391 bool new_phi_created; |
5948
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5901
diff
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|
2392 PhiNode *result = create_split_phi(orig_phi, alias_idx, orig_phi_worklist, new_phi_created); |
0 | 2393 if (!new_phi_created) { |
2394 return result; | |
2395 } | |
2396 GrowableArray<PhiNode *> phi_list; | |
2397 GrowableArray<uint> cur_input; | |
2398 PhiNode *phi = orig_phi; | |
2399 uint idx = 1; | |
2400 bool finished = false; | |
2401 while(!finished) { | |
2402 while (idx < phi->req()) { | |
5948
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diff
changeset
|
2403 Node *mem = find_inst_mem(phi->in(idx), alias_idx, orig_phi_worklist); |
0 | 2404 if (mem != NULL && mem->is_Phi()) { |
5948
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kvn
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|
2405 PhiNode *newphi = create_split_phi(mem->as_Phi(), alias_idx, orig_phi_worklist, new_phi_created); |
0 | 2406 if (new_phi_created) { |
2407 // found an phi for which we created a new split, push current one on worklist and begin | |
2408 // processing new one | |
2409 phi_list.push(phi); | |
2410 cur_input.push(idx); | |
2411 phi = mem->as_Phi(); | |
65 | 2412 result = newphi; |
0 | 2413 idx = 1; |
2414 continue; | |
2415 } else { | |
65 | 2416 mem = newphi; |
0 | 2417 } |
2418 } | |
38
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kvn
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0
diff
changeset
|
2419 if (C->failing()) { |
b789bcaf2dd9
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0
diff
changeset
|
2420 return NULL; |
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diff
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|
2421 } |
0 | 2422 result->set_req(idx++, mem); |
2423 } | |
2424 #ifdef ASSERT | |
2425 // verify that the new Phi has an input for each input of the original | |
2426 assert( phi->req() == result->req(), "must have same number of inputs."); | |
2427 assert( result->in(0) != NULL && result->in(0) == phi->in(0), "regions must match"); | |
65 | 2428 #endif |
2429 // Check if all new phi's inputs have specified alias index. | |
2430 // Otherwise use old phi. | |
0 | 2431 for (uint i = 1; i < phi->req(); i++) { |
65 | 2432 Node* in = result->in(i); |
2433 assert((phi->in(i) == NULL) == (in == NULL), "inputs must correspond."); | |
0 | 2434 } |
2435 // we have finished processing a Phi, see if there are any more to do | |
2436 finished = (phi_list.length() == 0 ); | |
2437 if (!finished) { | |
2438 phi = phi_list.pop(); | |
2439 idx = cur_input.pop(); | |
65 | 2440 PhiNode *prev_result = get_map_phi(phi->_idx); |
2441 prev_result->set_req(idx++, result); | |
2442 result = prev_result; | |
0 | 2443 } |
2444 } | |
2445 return result; | |
2446 } | |
2447 | |
65 | 2448 // |
2449 // The next methods are derived from methods in MemNode. | |
2450 // | |
5948
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5901
diff
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|
2451 Node* ConnectionGraph::step_through_mergemem(MergeMemNode *mmem, int alias_idx, const TypeOopPtr *toop) { |
65 | 2452 Node *mem = mmem; |
1815 | 2453 // TypeOopPtr::NOTNULL+any is an OOP with unknown offset - generally |
65 | 2454 // means an array I have not precisely typed yet. Do not do any |
2455 // alias stuff with it any time soon. | |
5948
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kvn
parents:
5901
diff
changeset
|
2456 if (toop->base() != Type::AnyPtr && |
1815 | 2457 !(toop->klass() != NULL && |
2458 toop->klass()->is_java_lang_Object() && | |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
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diff
changeset
|
2459 toop->offset() == Type::OffsetBot)) { |
65 | 2460 mem = mmem->memory_at(alias_idx); |
2461 // Update input if it is progress over what we have now | |
2462 } | |
2463 return mem; | |
2464 } | |
2465 | |
2466 // | |
1101
7fee0a6cc6d4
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diff
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|
2467 // Move memory users to their memory slices. |
7fee0a6cc6d4
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diff
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|
2468 // |
5948
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5901
diff
changeset
|
2469 void ConnectionGraph::move_inst_mem(Node* n, GrowableArray<PhiNode *> &orig_phis) { |
1101
7fee0a6cc6d4
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kvn
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1100
diff
changeset
|
2470 Compile* C = _compile; |
5948
ee138854b3a6
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kvn
parents:
5901
diff
changeset
|
2471 PhaseGVN* igvn = _igvn; |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2472 const TypePtr* tp = igvn->type(n->in(MemNode::Address))->isa_ptr(); |
7fee0a6cc6d4
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changeset
|
2473 assert(tp != NULL, "ptr type"); |
7fee0a6cc6d4
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|
2474 int alias_idx = C->get_alias_index(tp); |
7fee0a6cc6d4
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|
2475 int general_idx = C->get_general_index(alias_idx); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
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|
2476 |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2477 // Move users first |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2478 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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changeset
|
2479 Node* use = n->fast_out(i); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
changeset
|
2480 if (use->is_MergeMem()) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2481 MergeMemNode* mmem = use->as_MergeMem(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2482 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
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diff
changeset
|
2483 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
|
2484 continue; // Nothing to do |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2485 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2486 // Replace previous general reference to mem node. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2487 uint orig_uniq = C->unique(); |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2488 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
|
2489 assert(orig_uniq == C->unique(), "no new nodes"); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2490 mmem->set_memory_at(general_idx, m); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2491 --imax; |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2492 --i; |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2493 } else if (use->is_MemBar()) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2494 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
|
2495 if (use->req() > MemBarNode::Precedent && |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2496 use->in(MemBarNode::Precedent) == n) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2497 // Don't move related membars. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2498 record_for_optimizer(use); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2499 continue; |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2500 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2501 tp = use->as_MemBar()->adr_type()->isa_ptr(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2502 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
|
2503 alias_idx == general_idx) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2504 continue; // Nothing to do |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2505 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2506 // Move to general memory slice. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2507 uint orig_uniq = C->unique(); |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2508 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
|
2509 assert(orig_uniq == C->unique(), "no new nodes"); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2510 igvn->hash_delete(use); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2511 imax -= use->replace_edge(n, m); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
changeset
|
2512 igvn->hash_insert(use); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2513 record_for_optimizer(use); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2514 --i; |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
changeset
|
2515 #ifdef ASSERT |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2516 } else if (use->is_Mem()) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2517 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
|
2518 // Don't move related cardmark. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2519 continue; |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2520 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
2521 // Memory nodes should have new memory input. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
changeset
|
2522 tp = igvn->type(use->in(MemNode::Address))->isa_ptr(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2523 assert(tp != NULL, "ptr type"); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2524 int idx = C->get_alias_index(tp); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2525 assert(get_map(use->_idx) != NULL || idx == alias_idx, |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
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diff
changeset
|
2526 "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
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diff
changeset
|
2527 } else if (use->is_Phi()) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
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diff
changeset
|
2528 // Phi nodes should be split and moved already. |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
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diff
changeset
|
2529 tp = use->as_Phi()->adr_type()->isa_ptr(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
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diff
changeset
|
2530 assert(tp != NULL, "ptr type"); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
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diff
changeset
|
2531 int idx = C->get_alias_index(tp); |
7fee0a6cc6d4
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kvn
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diff
changeset
|
2532 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
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diff
changeset
|
2533 } else { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2534 use->dump(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2535 assert(false, "should not be here"); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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diff
changeset
|
2536 #endif |
7fee0a6cc6d4
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diff
changeset
|
2537 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
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diff
changeset
|
2538 } |
7fee0a6cc6d4
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2539 } |
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2540 |
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|
2541 // |
65 | 2542 // Search memory chain of "mem" to find a MemNode whose address |
2543 // is the specified alias index. | |
2544 // | |
5948
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|
2545 Node* ConnectionGraph::find_inst_mem(Node *orig_mem, int alias_idx, GrowableArray<PhiNode *> &orig_phis) { |
65 | 2546 if (orig_mem == NULL) |
2547 return orig_mem; | |
5948
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|
2548 Compile* C = _compile; |
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|
2549 PhaseGVN* igvn = _igvn; |
1815 | 2550 const TypeOopPtr *toop = C->get_adr_type(alias_idx)->isa_oopptr(); |
2551 bool is_instance = (toop != NULL) && toop->is_known_instance(); | |
253
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|
2552 Node *start_mem = C->start()->proj_out(TypeFunc::Memory); |
65 | 2553 Node *prev = NULL; |
2554 Node *result = orig_mem; | |
2555 while (prev != result) { | |
2556 prev = result; | |
253
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|
2557 if (result == start_mem) |
605 | 2558 break; // hit one of our sentinels |
65 | 2559 if (result->is_Mem()) { |
5948
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|
2560 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
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|
2561 if (at == Type::TOP) |
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
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|
2562 break; // Dead |
55973726c600
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|
2563 assert (at->isa_ptr() != NULL, "pointer type required."); |
55973726c600
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|
2564 int idx = C->get_alias_index(at->is_ptr()); |
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
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|
2565 if (idx == alias_idx) |
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
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|
2566 break; // Found |
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
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|
2567 if (!is_instance && (at->isa_oopptr() == NULL || |
55973726c600
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|
2568 !at->is_oopptr()->is_known_instance())) { |
55973726c600
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|
2569 break; // Do not skip store to general memory slice. |
65 | 2570 } |
253
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|
2571 result = result->in(MemNode::Memory); |
65 | 2572 } |
2573 if (!is_instance) | |
2574 continue; // don't search further for non-instance types | |
2575 // skip over a call which does not affect this memory slice | |
2576 if (result->is_Proj() && result->as_Proj()->_con == TypeFunc::Memory) { | |
2577 Node *proj_in = result->in(0); | |
1815 | 2578 if (proj_in->is_Allocate() && proj_in->_idx == (uint)toop->instance_id()) { |
605 | 2579 break; // hit one of our sentinels |
253
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2580 } else if (proj_in->is_Call()) { |
65 | 2581 CallNode *call = proj_in->as_Call(); |
5948
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|
2582 if (!call->may_modify(toop, igvn)) { |
65 | 2583 result = call->in(TypeFunc::Memory); |
2584 } | |
2585 } else if (proj_in->is_Initialize()) { | |
2586 AllocateNode* alloc = proj_in->as_Initialize()->allocation(); | |
2587 // Stop if this is the initialization for the object instance which | |
2588 // which contains this memory slice, otherwise skip over it. | |
1815 | 2589 if (alloc == NULL || alloc->_idx != (uint)toop->instance_id()) { |
65 | 2590 result = proj_in->in(TypeFunc::Memory); |
2591 } | |
2592 } else if (proj_in->is_MemBar()) { | |
2593 result = proj_in->in(TypeFunc::Memory); | |
2594 } | |
2595 } else if (result->is_MergeMem()) { | |
2596 MergeMemNode *mmem = result->as_MergeMem(); | |
1815 | 2597 result = step_through_mergemem(mmem, alias_idx, toop); |
65 | 2598 if (result == mmem->base_memory()) { |
2599 // Didn't find instance memory, search through general slice recursively. | |
2600 result = mmem->memory_at(C->get_general_index(alias_idx)); | |
5948
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|
2601 result = find_inst_mem(result, alias_idx, orig_phis); |
65 | 2602 if (C->failing()) { |
2603 return NULL; | |
2604 } | |
2605 mmem->set_memory_at(alias_idx, result); | |
2606 } | |
2607 } else if (result->is_Phi() && | |
2608 C->get_alias_index(result->as_Phi()->adr_type()) != alias_idx) { | |
5948
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|
2609 Node *un = result->as_Phi()->unique_input(igvn); |
65 | 2610 if (un != NULL) { |
1101
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|
2611 orig_phis.append_if_missing(result->as_Phi()); |
65 | 2612 result = un; |
2613 } else { | |
2614 break; | |
2615 } | |
1100
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1072
diff
changeset
|
2616 } else if (result->is_ClearArray()) { |
5948
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|
2617 if (!ClearArrayNode::step_through(&result, (uint)toop->instance_id(), igvn)) { |
1100
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6895383: JCK test throws NPE for method compiled with Escape Analysis
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diff
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|
2618 // Can not bypass initialization of the instance |
f96a1a986f7b
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diff
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|
2619 // we are looking for. |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
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1072
diff
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|
2620 break; |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
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1072
diff
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|
2621 } |
f96a1a986f7b
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diff
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|
2622 // Otherwise skip it (the call updated 'result' value). |
584 | 2623 } else if (result->Opcode() == Op_SCMemProj) { |
7637
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|
2624 Node* mem = result->in(0); |
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|
2625 Node* adr = NULL; |
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|
2626 if (mem->is_LoadStore()) { |
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6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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|
2627 adr = mem->in(MemNode::Address); |
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|
2628 } else { |
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diff
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|
2629 assert(mem->Opcode() == Op_EncodeISOArray, "sanity"); |
b30b3c2a0cf2
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|
2630 adr = mem->in(3); // Memory edge corresponds to destination array |
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|
2631 } |
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diff
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|
2632 const Type *at = igvn->type(adr); |
584 | 2633 if (at != Type::TOP) { |
2634 assert (at->isa_ptr() != NULL, "pointer type required."); | |
2635 int idx = C->get_alias_index(at->is_ptr()); | |
2636 assert(idx != alias_idx, "Object is not scalar replaceable if a LoadStore node access its field"); | |
2637 break; | |
2638 } | |
7637
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|
2639 result = mem->in(MemNode::Memory); |
65 | 2640 } |
2641 } | |
247 | 2642 if (result->is_Phi()) { |
65 | 2643 PhiNode *mphi = result->as_Phi(); |
2644 assert(mphi->bottom_type() == Type::MEMORY, "memory phi required"); | |
2645 const TypePtr *t = mphi->adr_type(); | |
2459
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
kvn
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diff
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|
2646 if (!is_instance) { |
247 | 2647 // Push all non-instance Phis on the orig_phis worklist to update inputs |
2648 // during Phase 4 if needed. | |
2649 orig_phis.append_if_missing(mphi); | |
2459
55973726c600
6992789: assert(phi->_idx >= nodes_size()) failed: only new Phi per instance memory slice
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|
2650 } else if (C->get_alias_index(t) != alias_idx) { |
55973726c600
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|
2651 // Create a new Phi with the specified alias index type. |
5948
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diff
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|
2652 result = split_memory_phi(mphi, alias_idx, orig_phis); |
65 | 2653 } |
2654 } | |
2655 // the result is either MemNode, PhiNode, InitializeNode. | |
2656 return result; | |
2657 } | |
2658 | |
0 | 2659 // |
2660 // Convert the types of unescaped object to instance types where possible, | |
2661 // propagate the new type information through the graph, and update memory | |
2662 // edges and MergeMem inputs to reflect the new type. | |
2663 // | |
2664 // We start with allocations (and calls which may be allocations) on alloc_worklist. | |
2665 // The processing is done in 4 phases: | |
2666 // | |
2667 // Phase 1: Process possible allocations from alloc_worklist. Create instance | |
2668 // types for the CheckCastPP for allocations where possible. | |
2669 // Propagate the the new types through users as follows: | |
2670 // casts and Phi: push users on alloc_worklist | |
2671 // AddP: cast Base and Address inputs to the instance type | |
2672 // push any AddP users on alloc_worklist and push any memnode | |
2673 // users onto memnode_worklist. | |
2674 // Phase 2: Process MemNode's from memnode_worklist. compute new address type and | |
2675 // search the Memory chain for a store with the appropriate type | |
2676 // address type. If a Phi is found, create a new version with | |
605 | 2677 // the appropriate memory slices from each of the Phi inputs. |
0 | 2678 // For stores, process the users as follows: |
2679 // MemNode: push on memnode_worklist | |
2680 // MergeMem: push on mergemem_worklist | |
2681 // Phase 3: Process MergeMem nodes from mergemem_worklist. Walk each memory slice | |
2682 // moving the first node encountered of each instance type to the | |
2683 // the input corresponding to its alias index. | |
2684 // appropriate memory slice. | |
2685 // Phase 4: Update the inputs of non-instance memory Phis and the Memory input of memnodes. | |
2686 // | |
2687 // In the following example, the CheckCastPP nodes are the cast of allocation | |
2688 // results and the allocation of node 29 is unescaped and eligible to be an | |
2689 // instance type. | |
2690 // | |
2691 // We start with: | |
2692 // | |
2693 // 7 Parm #memory | |
2694 // 10 ConI "12" | |
2695 // 19 CheckCastPP "Foo" | |
2696 // 20 AddP _ 19 19 10 Foo+12 alias_index=4 | |
2697 // 29 CheckCastPP "Foo" | |
2698 // 30 AddP _ 29 29 10 Foo+12 alias_index=4 | |
2699 // | |
2700 // 40 StoreP 25 7 20 ... alias_index=4 | |
2701 // 50 StoreP 35 40 30 ... alias_index=4 | |
2702 // 60 StoreP 45 50 20 ... alias_index=4 | |
2703 // 70 LoadP _ 60 30 ... alias_index=4 | |
2704 // 80 Phi 75 50 60 Memory alias_index=4 | |
2705 // 90 LoadP _ 80 30 ... alias_index=4 | |
2706 // 100 LoadP _ 80 20 ... alias_index=4 | |
2707 // | |
2708 // | |
2709 // Phase 1 creates an instance type for node 29 assigning it an instance id of 24 | |
2710 // and creating a new alias index for node 30. This gives: | |
2711 // | |
2712 // 7 Parm #memory | |
2713 // 10 ConI "12" | |
2714 // 19 CheckCastPP "Foo" | |
2715 // 20 AddP _ 19 19 10 Foo+12 alias_index=4 | |
2716 // 29 CheckCastPP "Foo" iid=24 | |
2717 // 30 AddP _ 29 29 10 Foo+12 alias_index=6 iid=24 | |
2718 // | |
2719 // 40 StoreP 25 7 20 ... alias_index=4 | |
2720 // 50 StoreP 35 40 30 ... alias_index=6 | |
2721 // 60 StoreP 45 50 20 ... alias_index=4 | |
2722 // 70 LoadP _ 60 30 ... alias_index=6 | |
2723 // 80 Phi 75 50 60 Memory alias_index=4 | |
2724 // 90 LoadP _ 80 30 ... alias_index=6 | |
2725 // 100 LoadP _ 80 20 ... alias_index=4 | |
2726 // | |
2727 // In phase 2, new memory inputs are computed for the loads and stores, | |
2728 // And a new version of the phi is created. In phase 4, the inputs to | |
2729 // node 80 are updated and then the memory nodes are updated with the | |
2730 // values computed in phase 2. This results in: | |
2731 // | |
2732 // 7 Parm #memory | |
2733 // 10 ConI "12" | |
2734 // 19 CheckCastPP "Foo" | |
2735 // 20 AddP _ 19 19 10 Foo+12 alias_index=4 | |
2736 // 29 CheckCastPP "Foo" iid=24 | |
2737 // 30 AddP _ 29 29 10 Foo+12 alias_index=6 iid=24 | |
2738 // | |
2739 // 40 StoreP 25 7 20 ... alias_index=4 | |
2740 // 50 StoreP 35 7 30 ... alias_index=6 | |
2741 // 60 StoreP 45 40 20 ... alias_index=4 | |
2742 // 70 LoadP _ 50 30 ... alias_index=6 | |
2743 // 80 Phi 75 40 60 Memory alias_index=4 | |
2744 // 120 Phi 75 50 50 Memory alias_index=6 | |
2745 // 90 LoadP _ 120 30 ... alias_index=6 | |
2746 // 100 LoadP _ 80 20 ... alias_index=4 | |
2747 // | |
2748 void ConnectionGraph::split_unique_types(GrowableArray<Node *> &alloc_worklist) { | |
2749 GrowableArray<Node *> memnode_worklist; | |
2750 GrowableArray<PhiNode *> orig_phis; | |
1921 | 2751 PhaseIterGVN *igvn = _igvn; |
0 | 2752 uint new_index_start = (uint) _compile->num_alias_types(); |
1101
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2753 Arena* arena = Thread::current()->resource_area(); |
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2754 VectorSet visited(arena); |
5948
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2755 ideal_nodes.clear(); // Reset for use with set_map/get_map. |
ee138854b3a6
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|
2756 uint unique_old = _compile->unique(); |
65 | 2757 |
2758 // Phase 1: Process possible allocations from alloc_worklist. | |
2759 // Create instance types for the CheckCastPP for allocations where possible. | |
244
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2760 // |
524eca34ea76
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|
2761 // (Note: don't forget to change the order of the second AddP node on |
524eca34ea76
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2762 // the alloc_worklist if the order of the worklist processing is changed, |
524eca34ea76
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2763 // see the comment in find_second_addp().) |
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2764 // |
0 | 2765 while (alloc_worklist.length() != 0) { |
2766 Node *n = alloc_worklist.pop(); | |
2767 uint ni = n->_idx; | |
2768 if (n->is_Call()) { | |
2769 CallNode *alloc = n->as_Call(); | |
2770 // copy escape information to call node | |
244
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2771 PointsToNode* ptn = ptnode_adr(alloc->_idx); |
5948
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2772 PointsToNode::EscapeState es = ptn->escape_state(); |
65 | 2773 // We have an allocation or call which returns a Java object, |
2774 // see if it is unescaped. | |
4058
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7059047: EA: can't find initializing store with several CheckCastPP
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2775 if (es != PointsToNode::NoEscape || !ptn->scalar_replaceable()) |
0 | 2776 continue; |
784
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|
2777 // Find CheckCastPP for the allocate or for the return value of a call |
b2934faac289
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|
2778 n = alloc->result_cast(); |
b2934faac289
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|
2779 if (n == NULL) { // No uses except Initialize node |
b2934faac289
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2780 if (alloc->is_Allocate()) { |
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|
2781 // Set the scalar_replaceable flag for allocation |
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|
2782 // so it could be eliminated if it has no uses. |
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|
2783 alloc->as_Allocate()->_is_scalar_replaceable = true; |
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|
2784 } |
10278 | 2785 if (alloc->is_CallStaticJava()) { |
2786 // Set the scalar_replaceable flag for boxing method | |
2787 // so it could be eliminated if it has no uses. | |
2788 alloc->as_CallStaticJava()->_is_scalar_replaceable = true; | |
2789 } | |
784
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6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
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|
2790 continue; |
39
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6667612: (Escape Analysis) disable loop cloning if it has a scalar replaceable allocation
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diff
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|
2791 } |
784
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|
2792 if (!n->is_CheckCastPP()) { // not unique CheckCastPP. |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents:
605
diff
changeset
|
2793 assert(!alloc->is_Allocate(), "allocation should have unique type"); |
65 | 2794 continue; |
784
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents:
605
diff
changeset
|
2795 } |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents:
605
diff
changeset
|
2796 |
65 | 2797 // The inline code for Object.clone() casts the allocation result to |
247 | 2798 // java.lang.Object and then to the actual type of the allocated |
65 | 2799 // object. Detect this case and use the second cast. |
247 | 2800 // Also detect j.l.reflect.Array.newInstance(jobject, jint) case when |
2801 // the allocation result is cast to java.lang.Object and then | |
2802 // to the actual Array type. | |
65 | 2803 if (alloc->is_Allocate() && n->as_Type()->type() == TypeInstPtr::NOTNULL |
247 | 2804 && (alloc->is_AllocateArray() || |
2805 igvn->type(alloc->in(AllocateNode::KlassNode)) != TypeKlassPtr::OBJECT)) { | |
65 | 2806 Node *cast2 = NULL; |
2807 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { | |
2808 Node *use = n->fast_out(i); | |
2809 if (use->is_CheckCastPP()) { | |
2810 cast2 = use; | |
2811 break; | |
2812 } | |
2813 } | |
2814 if (cast2 != NULL) { | |
2815 n = cast2; | |
2816 } else { | |
784
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents:
605
diff
changeset
|
2817 // Non-scalar replaceable if the allocation type is unknown statically |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents:
605
diff
changeset
|
2818 // (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
|
2819 // deoptimization without precise type. |
65 | 2820 continue; |
2821 } | |
2822 } | |
784
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents:
605
diff
changeset
|
2823 if (alloc->is_Allocate()) { |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents:
605
diff
changeset
|
2824 // Set the scalar_replaceable flag for allocation |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents:
605
diff
changeset
|
2825 // so it could be eliminated. |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents:
605
diff
changeset
|
2826 alloc->as_Allocate()->_is_scalar_replaceable = true; |
b2934faac289
6836054: java/util/Arrays/CopyMethods.java fails on solaris-sparc with IllegalArgumentException
kvn
parents:
605
diff
changeset
|
2827 } |
10278 | 2828 if (alloc->is_CallStaticJava()) { |
2829 // Set the scalar_replaceable flag for boxing method | |
2830 // so it could be eliminated. | |
2831 alloc->as_CallStaticJava()->_is_scalar_replaceable = true; | |
2832 } | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2833 set_escape_state(ptnode_adr(n->_idx), es); // CheckCastPP escape state |
247 | 2834 // in order for an object to be scalar-replaceable, it must be: |
65 | 2835 // - a direct allocation (not a call returning an object) |
2836 // - non-escaping | |
2837 // - eligible to be a unique type | |
2838 // - not determined to be ineligible by escape analysis | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2839 set_map(alloc, n); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2840 set_map(n, alloc); |
65 | 2841 const TypeOopPtr *t = igvn->type(n)->isa_oopptr(); |
2842 if (t == NULL) | |
4058
59e515ee9354
7059047: EA: can't find initializing store with several CheckCastPP
kvn
parents:
4046
diff
changeset
|
2843 continue; // not a TypeOopPtr |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2844 const TypeOopPtr* tinst = t->cast_to_exactness(true)->is_oopptr()->cast_to_instance_id(ni); |
0 | 2845 igvn->hash_delete(n); |
2846 igvn->set_type(n, tinst); | |
2847 n->raise_bottom_type(tinst); | |
2848 igvn->hash_insert(n); | |
65 | 2849 record_for_optimizer(n); |
4058
59e515ee9354
7059047: EA: can't find initializing store with several CheckCastPP
kvn
parents:
4046
diff
changeset
|
2850 if (alloc->is_Allocate() && (t->isa_instptr() || t->isa_aryptr())) { |
163 | 2851 |
2852 // First, put on the worklist all Field edges from Connection Graph | |
2853 // which is more accurate then putting immediate users from Ideal Graph. | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2854 for (EdgeIterator e(ptn); e.has_next(); e.next()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2855 PointsToNode* tgt = e.get(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2856 Node* use = tgt->ideal_node(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2857 assert(tgt->is_Field() && use->is_AddP(), |
163 | 2858 "only AddP nodes are Field edges in CG"); |
2859 if (use->outcnt() > 0) { // Don't process dead nodes | |
2860 Node* addp2 = find_second_addp(use, use->in(AddPNode::Base)); | |
2861 if (addp2 != NULL) { | |
2862 assert(alloc->is_AllocateArray(),"array allocation was expected"); | |
2863 alloc_worklist.append_if_missing(addp2); | |
2864 } | |
2865 alloc_worklist.append_if_missing(use); | |
2866 } | |
2867 } | |
2868 | |
65 | 2869 // An allocation may have an Initialize which has raw stores. Scan |
2870 // the users of the raw allocation result and push AddP users | |
2871 // on alloc_worklist. | |
2872 Node *raw_result = alloc->proj_out(TypeFunc::Parms); | |
2873 assert (raw_result != NULL, "must have an allocation result"); | |
2874 for (DUIterator_Fast imax, i = raw_result->fast_outs(imax); i < imax; i++) { | |
2875 Node *use = raw_result->fast_out(i); | |
2876 if (use->is_AddP() && use->outcnt() > 0) { // Don't process dead nodes | |
2877 Node* addp2 = find_second_addp(use, raw_result); | |
2878 if (addp2 != NULL) { | |
2879 assert(alloc->is_AllocateArray(),"array allocation was expected"); | |
2880 alloc_worklist.append_if_missing(addp2); | |
2881 } | |
2882 alloc_worklist.append_if_missing(use); | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2883 } else if (use->is_MemBar()) { |
65 | 2884 memnode_worklist.append_if_missing(use); |
2885 } | |
2886 } | |
2887 } | |
0 | 2888 } else if (n->is_AddP()) { |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2889 JavaObjectNode* jobj = unique_java_object(get_addp_base(n)); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2890 if (jobj == NULL || jobj == phantom_obj) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2891 #ifdef ASSERT |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2892 ptnode_adr(get_addp_base(n)->_idx)->dump(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2893 ptnode_adr(n->_idx)->dump(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2894 assert(jobj != NULL && jobj != phantom_obj, "escaped allocation"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2895 #endif |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2896 _compile->record_failure(C2Compiler::retry_no_escape_analysis()); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2897 return; |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2898 } |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2899 Node *base = get_map(jobj->idx()); // CheckCastPP node |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2900 if (!split_AddP(n, base)) continue; // wrong type from dead path |
65 | 2901 } else if (n->is_Phi() || |
2902 n->is_CheckCastPP() || | |
168
7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
164
diff
changeset
|
2903 n->is_EncodeP() || |
7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
164
diff
changeset
|
2904 n->is_DecodeN() || |
65 | 2905 (n->is_ConstraintCast() && n->Opcode() == Op_CastPP)) { |
0 | 2906 if (visited.test_set(n->_idx)) { |
2907 assert(n->is_Phi(), "loops only through Phi's"); | |
2908 continue; // already processed | |
2909 } | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2910 JavaObjectNode* jobj = unique_java_object(n); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2911 if (jobj == NULL || jobj == phantom_obj) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2912 #ifdef ASSERT |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2913 ptnode_adr(n->_idx)->dump(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2914 assert(jobj != NULL && jobj != phantom_obj, "escaped allocation"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2915 #endif |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2916 _compile->record_failure(C2Compiler::retry_no_escape_analysis()); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2917 return; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2918 } else { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2919 Node *val = get_map(jobj->idx()); // CheckCastPP node |
0 | 2920 TypeNode *tn = n->as_Type(); |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2921 const TypeOopPtr* tinst = igvn->type(val)->isa_oopptr(); |
223 | 2922 assert(tinst != NULL && tinst->is_known_instance() && |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
2923 tinst->instance_id() == jobj->idx() , "instance type expected."); |
163 | 2924 |
2925 const Type *tn_type = igvn->type(tn); | |
223 | 2926 const TypeOopPtr *tn_t; |
2927 if (tn_type->isa_narrowoop()) { | |
2928 tn_t = tn_type->make_ptr()->isa_oopptr(); | |
2929 } else { | |
2930 tn_t = tn_type->isa_oopptr(); | |
2931 } | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2932 if (tn_t != NULL && tinst->klass()->is_subtype_of(tn_t->klass())) { |
163 | 2933 if (tn_type->isa_narrowoop()) { |
2934 tn_type = tinst->make_narrowoop(); | |
2935 } else { | |
2936 tn_type = tinst; | |
2937 } | |
0 | 2938 igvn->hash_delete(tn); |
163 | 2939 igvn->set_type(tn, tn_type); |
2940 tn->set_type(tn_type); | |
0 | 2941 igvn->hash_insert(tn); |
65 | 2942 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
|
2943 } else { |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2944 assert(tn_type == TypePtr::NULL_PTR || |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2945 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
|
2946 "unexpected type"); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2947 continue; // Skip dead path with different type |
0 | 2948 } |
2949 } | |
2950 } else { | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2951 debug_only(n->dump();) |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2952 assert(false, "EA: unexpected node"); |
0 | 2953 continue; |
2954 } | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2955 // push allocation's users on appropriate worklist |
0 | 2956 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
2957 Node *use = n->fast_out(i); | |
2958 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
|
2959 // Load/store to instance's field |
65 | 2960 memnode_worklist.append_if_missing(use); |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2961 } else if (use->is_MemBar()) { |
10278 | 2962 if (use->in(TypeFunc::Memory) == n) { // Ignore precedent edge |
2963 memnode_worklist.append_if_missing(use); | |
2964 } | |
65 | 2965 } else if (use->is_AddP() && use->outcnt() > 0) { // No dead nodes |
2966 Node* addp2 = find_second_addp(use, n); | |
2967 if (addp2 != NULL) { | |
2968 alloc_worklist.append_if_missing(addp2); | |
2969 } | |
2970 alloc_worklist.append_if_missing(use); | |
2971 } else if (use->is_Phi() || | |
2972 use->is_CheckCastPP() || | |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
2973 use->is_EncodeNarrowPtr() || |
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6795
diff
changeset
|
2974 use->is_DecodeNarrowPtr() || |
65 | 2975 (use->is_ConstraintCast() && use->Opcode() == Op_CastPP)) { |
2976 alloc_worklist.append_if_missing(use); | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2977 #ifdef ASSERT |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2978 } else if (use->is_Mem()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2979 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
|
2980 } else if (use->is_MergeMem()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2981 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
|
2982 } else if (use->is_SafePoint()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2983 // 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
|
2984 // (through CheckCastPP nodes) even for debug info. |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2985 Node* m = use->in(TypeFunc::Memory); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2986 if (m->is_MergeMem()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2987 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
|
2988 } |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2989 } else if (use->Opcode() == Op_EncodeISOArray) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2990 if (use->in(MemNode::Memory) == n || use->in(3) == n) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2991 // EncodeISOArray overwrites destination array |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2992 memnode_worklist.append_if_missing(use); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
2993 } |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2994 } else { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2995 uint op = use->Opcode(); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2996 if (!(op == Op_CmpP || op == Op_Conv2B || |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2997 op == Op_CastP2X || op == Op_StoreCM || |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
2998 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
|
2999 op == Op_StrEquals || op == Op_StrIndexOf)) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3000 n->dump(); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3001 use->dump(); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3002 assert(false, "EA: missing allocation reference path"); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3003 } |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3004 #endif |
0 | 3005 } |
3006 } | |
3007 | |
3008 } | |
65 | 3009 // New alias types were created in split_AddP(). |
0 | 3010 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
|
3011 assert(unique_old == _compile->unique(), "there should be no new ideal nodes after Phase 1"); |
0 | 3012 |
3013 // Phase 2: Process MemNode's from memnode_worklist. compute new address type and | |
3014 // compute new values for Memory inputs (the Memory inputs are not | |
3015 // actually updated until phase 4.) | |
3016 if (memnode_worklist.length() == 0) | |
3017 return; // nothing to do | |
3018 while (memnode_worklist.length() != 0) { | |
3019 Node *n = memnode_worklist.pop(); | |
65 | 3020 if (visited.test_set(n->_idx)) |
3021 continue; | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3022 if (n->is_Phi() || n->is_ClearArray()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3023 // 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
|
3024 } 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
|
3025 // 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
|
3026 n = n->as_MemBar()->proj_out(TypeFunc::Memory); |
65 | 3027 if (n == NULL) |
0 | 3028 continue; |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3029 } else if (n->Opcode() == Op_EncodeISOArray) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3030 // get the memory projection |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3031 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3032 Node *use = n->fast_out(i); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3033 if (use->Opcode() == Op_SCMemProj) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3034 n = use; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3035 break; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3036 } |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3037 } |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3038 assert(n->Opcode() == Op_SCMemProj, "memory projection required"); |
0 | 3039 } else { |
3040 assert(n->is_Mem(), "memory node required."); | |
3041 Node *addr = n->in(MemNode::Address); | |
3042 const Type *addr_t = igvn->type(addr); | |
3043 if (addr_t == Type::TOP) | |
3044 continue; | |
3045 assert (addr_t->isa_ptr() != NULL, "pointer type required."); | |
3046 int alias_idx = _compile->get_alias_index(addr_t->is_ptr()); | |
65 | 3047 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
|
3048 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
|
3049 if (_compile->failing()) { |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
3050 return; |
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
|
3051 } |
65 | 3052 if (mem != n->in(MemNode::Memory)) { |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
3053 // 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
|
3054 // 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
|
3055 set_map(n, mem); |
65 | 3056 } |
0 | 3057 if (n->is_Load()) { |
3058 continue; // don't push users | |
3059 } else if (n->is_LoadStore()) { | |
3060 // get the memory projection | |
3061 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { | |
3062 Node *use = n->fast_out(i); | |
3063 if (use->Opcode() == Op_SCMemProj) { | |
3064 n = use; | |
3065 break; | |
3066 } | |
3067 } | |
3068 assert(n->Opcode() == Op_SCMemProj, "memory projection required"); | |
3069 } | |
3070 } | |
3071 // push user on appropriate worklist | |
3072 for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { | |
3073 Node *use = n->fast_out(i); | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3074 if (use->is_Phi() || use->is_ClearArray()) { |
65 | 3075 memnode_worklist.append_if_missing(use); |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3076 } else if (use->is_Mem() && use->in(MemNode::Memory) == n) { |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3077 if (use->Opcode() == Op_StoreCM) // Ignore cardmark stores |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3078 continue; |
65 | 3079 memnode_worklist.append_if_missing(use); |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3080 } else if (use->is_MemBar()) { |
10278 | 3081 if (use->in(TypeFunc::Memory) == n) { // Ignore precedent edge |
3082 memnode_worklist.append_if_missing(use); | |
3083 } | |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3084 #ifdef ASSERT |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3085 } else if(use->is_Mem()) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3086 assert(use->in(MemNode::Memory) != n, "EA: missing memory path"); |
0 | 3087 } else if (use->is_MergeMem()) { |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3088 assert(_mergemem_worklist.contains(use->as_MergeMem()), "EA: missing MergeMem node in the worklist"); |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3089 } else if (use->Opcode() == Op_EncodeISOArray) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3090 if (use->in(MemNode::Memory) == n || use->in(3) == n) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3091 // EncodeISOArray overwrites destination array |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3092 memnode_worklist.append_if_missing(use); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7196
diff
changeset
|
3093 } |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3094 } else { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3095 uint op = use->Opcode(); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3096 if (!(op == Op_StoreCM || |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3097 (op == Op_CallLeaf && use->as_CallLeaf()->_name != NULL && |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3098 strcmp(use->as_CallLeaf()->_name, "g1_wb_pre") == 0) || |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3099 op == Op_AryEq || op == Op_StrComp || |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3100 op == Op_StrEquals || op == Op_StrIndexOf)) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3101 n->dump(); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3102 use->dump(); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3103 assert(false, "EA: missing memory path"); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3104 } |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3105 #endif |
0 | 3106 } |
3107 } | |
3108 } | |
3109 | |
65 | 3110 // Phase 3: Process MergeMem nodes from mergemem_worklist. |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3111 // Walk each memory slice moving the first node encountered of each |
65 | 3112 // instance type to the the input corresponding to its alias index. |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3113 uint length = _mergemem_worklist.length(); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3114 for( uint next = 0; next < length; ++next ) { |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3115 MergeMemNode* nmm = _mergemem_worklist.at(next); |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3116 assert(!visited.test_set(nmm->_idx), "should not be visited before"); |
0 | 3117 // Note: we don't want to use MergeMemStream here because we only want to |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3118 // scan inputs which exist at the start, not ones we add during processing. |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3119 // Note 2: MergeMem may already contains instance memory slices added |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3120 // during find_inst_mem() call when memory nodes were processed above. |
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3121 igvn->hash_delete(nmm); |
0 | 3122 uint nslices = nmm->req(); |
3123 for (uint i = Compile::AliasIdxRaw+1; i < nslices; i++) { | |
65 | 3124 Node* mem = nmm->in(i); |
3125 Node* cur = NULL; | |
0 | 3126 if (mem == NULL || mem->is_top()) |
3127 continue; | |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
3128 // First, update mergemem by moving memory nodes to corresponding slices |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
3129 // if their type became more precise since this mergemem was created. |
0 | 3130 while (mem->is_Mem()) { |
3131 const Type *at = igvn->type(mem->in(MemNode::Address)); | |
3132 if (at != Type::TOP) { | |
3133 assert (at->isa_ptr() != NULL, "pointer type required."); | |
3134 uint idx = (uint)_compile->get_alias_index(at->is_ptr()); | |
3135 if (idx == i) { | |
3136 if (cur == NULL) | |
3137 cur = mem; | |
3138 } else { | |
3139 if (idx >= nmm->req() || nmm->is_empty_memory(nmm->in(idx))) { | |
3140 nmm->set_memory_at(idx, mem); | |
3141 } | |
3142 } | |
3143 } | |
3144 mem = mem->in(MemNode::Memory); | |
3145 } | |
3146 nmm->set_memory_at(i, (cur != NULL) ? cur : mem); | |
65 | 3147 // Find any instance of the current type if we haven't encountered |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
3148 // already a memory slice of the instance along the memory chain. |
65 | 3149 for (uint ni = new_index_start; ni < new_index_end; ni++) { |
3150 if((uint)_compile->get_general_index(ni) == i) { | |
3151 Node *m = (ni >= nmm->req()) ? nmm->empty_memory() : nmm->in(ni); | |
3152 if (nmm->is_empty_memory(m)) { | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3153 Node* result = find_inst_mem(mem, ni, orig_phis); |
65 | 3154 if (_compile->failing()) { |
3155 return; | |
3156 } | |
3157 nmm->set_memory_at(ni, result); | |
3158 } | |
3159 } | |
3160 } | |
3161 } | |
3162 // Find the rest of instances values | |
3163 for (uint ni = new_index_start; ni < new_index_end; ni++) { | |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
3164 const TypeOopPtr *tinst = _compile->get_adr_type(ni)->isa_oopptr(); |
65 | 3165 Node* result = step_through_mergemem(nmm, ni, tinst); |
3166 if (result == nmm->base_memory()) { | |
3167 // Didn't find instance memory, search through general slice recursively. | |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
3168 result = nmm->memory_at(_compile->get_general_index(ni)); |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3169 result = find_inst_mem(result, ni, orig_phis); |
65 | 3170 if (_compile->failing()) { |
3171 return; | |
3172 } | |
3173 nmm->set_memory_at(ni, result); | |
3174 } | |
3175 } | |
3176 igvn->hash_insert(nmm); | |
3177 record_for_optimizer(nmm); | |
0 | 3178 } |
3179 | |
65 | 3180 // Phase 4: Update the inputs of non-instance memory Phis and |
3181 // the Memory input of memnodes | |
0 | 3182 // First update the inputs of any non-instance Phi's from |
3183 // which we split out an instance Phi. Note we don't have | |
3184 // to recursively process Phi's encounted on the input memory | |
3185 // chains as is done in split_memory_phi() since they will | |
3186 // also be processed here. | |
247 | 3187 for (int j = 0; j < orig_phis.length(); j++) { |
3188 PhiNode *phi = orig_phis.at(j); | |
0 | 3189 int alias_idx = _compile->get_alias_index(phi->adr_type()); |
3190 igvn->hash_delete(phi); | |
3191 for (uint i = 1; i < phi->req(); i++) { | |
3192 Node *mem = phi->in(i); | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3193 Node *new_mem = find_inst_mem(mem, alias_idx, orig_phis); |
65 | 3194 if (_compile->failing()) { |
3195 return; | |
3196 } | |
0 | 3197 if (mem != new_mem) { |
3198 phi->set_req(i, new_mem); | |
3199 } | |
3200 } | |
3201 igvn->hash_insert(phi); | |
3202 record_for_optimizer(phi); | |
3203 } | |
3204 | |
3205 // Update the memory inputs of MemNodes with the value we computed | |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
3206 // in Phase 2 and move stores memory users to corresponding memory slices. |
3278
66b0e2371912
7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents:
2459
diff
changeset
|
3207 // Disable memory split verification code until the fix for 6984348. |
66b0e2371912
7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents:
2459
diff
changeset
|
3208 // Currently it produces false negative results since it does not cover all cases. |
66b0e2371912
7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents:
2459
diff
changeset
|
3209 #if 0 // ifdef ASSERT |
2249 | 3210 visited.Reset(); |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
3211 Node_Stack old_mems(arena, _compile->unique() >> 2); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
changeset
|
3212 #endif |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3213 for (uint i = 0; i < ideal_nodes.size(); i++) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3214 Node* n = ideal_nodes.at(i); |
ee138854b3a6
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|
3215 Node* nmem = get_map(n->_idx); |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
3216 assert(nmem != NULL, "sanity"); |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
3217 if (n->is_Mem()) { |
3278
66b0e2371912
7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
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diff
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|
3218 #if 0 // ifdef ASSERT |
5948
ee138854b3a6
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|
3219 Node* old_mem = n->in(MemNode::Memory); |
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|
3220 if (!visited.test_set(old_mem->_idx)) { |
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|
3221 old_mems.push(old_mem, old_mem->outcnt()); |
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|
3222 } |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
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|
3223 #endif |
5948
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|
3224 assert(n->in(MemNode::Memory) != nmem, "sanity"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
3225 if (!n->is_Load()) { |
ee138854b3a6
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|
3226 // Move memory users of a store first. |
ee138854b3a6
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|
3227 move_inst_mem(n, orig_phis); |
0 | 3228 } |
5948
ee138854b3a6
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|
3229 // Now update memory input |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
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parents:
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|
3230 igvn->hash_delete(n); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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|
3231 n->set_req(MemNode::Memory, nmem); |
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|
3232 igvn->hash_insert(n); |
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|
3233 record_for_optimizer(n); |
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|
3234 } else { |
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|
3235 assert(n->is_Allocate() || n->is_CheckCastPP() || |
ee138854b3a6
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|
3236 n->is_AddP() || n->is_Phi(), "unknown node used for set_map()"); |
0 | 3237 } |
3238 } | |
3278
66b0e2371912
7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
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2459
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|
3239 #if 0 // ifdef ASSERT |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
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|
3240 // Verify that memory was split correctly |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
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|
3241 while (old_mems.is_nonempty()) { |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
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1100
diff
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|
3242 Node* old_mem = old_mems.node(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
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|
3243 uint old_cnt = old_mems.index(); |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
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|
3244 old_mems.pop(); |
3278
66b0e2371912
7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
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2459
diff
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|
3245 assert(old_cnt == old_mem->outcnt(), "old mem could be lost"); |
1101
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
parents:
1100
diff
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|
3246 } |
7fee0a6cc6d4
6896727: nsk/logging/LoggingPermission/LoggingPermission/logperm002 fails with G1, EscapeAnalisys
kvn
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1100
diff
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|
3247 #endif |
0 | 3248 } |
3249 | |
5948
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|
3250 #ifndef PRODUCT |
ee138854b3a6
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|
3251 static const char *node_type_names[] = { |
ee138854b3a6
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|
3252 "UnknownType", |
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kvn
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5901
diff
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|
3253 "JavaObject", |
ee138854b3a6
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parents:
5901
diff
changeset
|
3254 "LocalVar", |
ee138854b3a6
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parents:
5901
diff
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|
3255 "Field", |
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5901
diff
changeset
|
3256 "Arraycopy" |
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|
3257 }; |
4937
73df3733f2eb
7129284: +DoEscapeAnalysis regression w/ early build of 7u4 (HotSpot 23) on Linux
kvn
parents:
4777
diff
changeset
|
3258 |
5948
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|
3259 static const char *esc_names[] = { |
ee138854b3a6
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kvn
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diff
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|
3260 "UnknownEscape", |
ee138854b3a6
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kvn
parents:
5901
diff
changeset
|
3261 "NoEscape", |
ee138854b3a6
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kvn
parents:
5901
diff
changeset
|
3262 "ArgEscape", |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
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|
3263 "GlobalEscape" |
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5901
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|
3264 }; |
0 | 3265 |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
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|
3266 void PointsToNode::dump(bool print_state) const { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
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|
3267 NodeType nt = node_type(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
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|
3268 tty->print("%s ", node_type_names[(int) nt]); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3269 if (print_state) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3270 EscapeState es = escape_state(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
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|
3271 EscapeState fields_es = fields_escape_state(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
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|
3272 tty->print("%s(%s) ", esc_names[(int)es], esc_names[(int)fields_es]); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
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|
3273 if (nt == PointsToNode::JavaObject && !this->scalar_replaceable()) |
6944
f3da5ff1514c
8002069: Assert failed in C2: assert(field->edge_count() > 0) failed: sanity
kvn
parents:
6895
diff
changeset
|
3274 tty->print("NSR "); |
4113 | 3275 } |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
3276 if (is_Field()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
3277 FieldNode* f = (FieldNode*)this; |
6944
f3da5ff1514c
8002069: Assert failed in C2: assert(field->edge_count() > 0) failed: sanity
kvn
parents:
6895
diff
changeset
|
3278 if (f->is_oop()) |
f3da5ff1514c
8002069: Assert failed in C2: assert(field->edge_count() > 0) failed: sanity
kvn
parents:
6895
diff
changeset
|
3279 tty->print("oop "); |
f3da5ff1514c
8002069: Assert failed in C2: assert(field->edge_count() > 0) failed: sanity
kvn
parents:
6895
diff
changeset
|
3280 if (f->offset() > 0) |
f3da5ff1514c
8002069: Assert failed in C2: assert(field->edge_count() > 0) failed: sanity
kvn
parents:
6895
diff
changeset
|
3281 tty->print("+%d ", f->offset()); |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3282 tty->print("("); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3283 for (BaseIterator i(f); i.has_next(); i.next()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
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|
3284 PointsToNode* b = i.get(); |
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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changeset
|
3285 tty->print(" %d%s", b->idx(),(b->is_JavaObject() ? "P" : "")); |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4122
diff
changeset
|
3286 } |
5948
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7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3287 tty->print(" )"); |
0 | 3288 } |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3289 tty->print("["); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
3290 for (EdgeIterator i(this); i.has_next(); i.next()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
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changeset
|
3291 PointsToNode* e = i.get(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
3292 tty->print(" %d%s%s", e->idx(),(e->is_JavaObject() ? "P" : (e->is_Field() ? "F" : "")), e->is_Arraycopy() ? "cp" : ""); |
1100
f96a1a986f7b
6895383: JCK test throws NPE for method compiled with Escape Analysis
kvn
parents:
1072
diff
changeset
|
3293 } |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
3294 tty->print(" ["); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
3295 for (UseIterator i(this); i.has_next(); i.next()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
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changeset
|
3296 PointsToNode* u = i.get(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
3297 bool is_base = false; |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
diff
changeset
|
3298 if (PointsToNode::is_base_use(u)) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
diff
changeset
|
3299 is_base = true; |
ee138854b3a6
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5901
diff
changeset
|
3300 u = PointsToNode::get_use_node(u)->as_Field(); |
4058
59e515ee9354
7059047: EA: can't find initializing store with several CheckCastPP
kvn
parents:
4046
diff
changeset
|
3301 } |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
3302 tty->print(" %d%s%s", u->idx(), is_base ? "b" : "", u->is_Arraycopy() ? "cp" : ""); |
4113 | 3303 } |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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5901
diff
changeset
|
3304 tty->print(" ]] "); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
3305 if (_node == NULL) |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
parents:
5901
diff
changeset
|
3306 tty->print_cr("<null>"); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
diff
changeset
|
3307 else |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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5901
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changeset
|
3308 _node->dump(); |
4113 | 3309 } |
3310 | |
5948
ee138854b3a6
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kvn
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5901
diff
changeset
|
3311 void ConnectionGraph::dump(GrowableArray<PointsToNode*>& ptnodes_worklist) { |
0 | 3312 bool first = true; |
5948
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diff
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|
3313 int ptnodes_length = ptnodes_worklist.length(); |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
3314 for (int i = 0; i < ptnodes_length; i++) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
3315 PointsToNode *ptn = ptnodes_worklist.at(i); |
ee138854b3a6
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|
3316 if (ptn == NULL || !ptn->is_JavaObject()) |
0 | 3317 continue; |
5948
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diff
changeset
|
3318 PointsToNode::EscapeState es = ptn->escape_state(); |
10278 | 3319 if ((es != PointsToNode::NoEscape) && !Verbose) { |
3320 continue; | |
3321 } | |
3322 Node* n = ptn->ideal_node(); | |
3323 if (n->is_Allocate() || (n->is_CallStaticJava() && | |
3324 n->as_CallStaticJava()->is_boxing_method())) { | |
65 | 3325 if (first) { |
3326 tty->cr(); | |
3327 tty->print("======== Connection graph for "); | |
244
524eca34ea76
6684714: Optimize EA Connection Graph build performance
kvn
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223
diff
changeset
|
3328 _compile->method()->print_short_name(); |
65 | 3329 tty->cr(); |
3330 first = false; | |
3331 } | |
3332 ptn->dump(); | |
5948
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
3333 // Print all locals and fields which reference this allocation |
ee138854b3a6
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5901
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changeset
|
3334 for (UseIterator j(ptn); j.has_next(); j.next()) { |
ee138854b3a6
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|
3335 PointsToNode* use = j.get(); |
ee138854b3a6
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kvn
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diff
changeset
|
3336 if (use->is_LocalVar()) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
kvn
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diff
changeset
|
3337 use->dump(Verbose); |
ee138854b3a6
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5901
diff
changeset
|
3338 } else if (Verbose) { |
ee138854b3a6
7147744: CTW: assert(false) failed: infinite EA connection graph build
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changeset
|
3339 use->dump(); |
65 | 3340 } |
3341 } | |
3342 tty->cr(); | |
0 | 3343 } |
3344 } | |
3345 } | |
3346 #endif |