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| 1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "src/compiler/ast-loop-assignment-analyzer.h" | 5 #include "src/compiler/ast-loop-assignment-analyzer.h" |
| 6 #include "src/compiler.h" | 6 #include "src/compiler.h" |
| 7 #include "src/parser.h" | 7 #include "src/parser.h" |
| 8 | 8 |
| 9 namespace v8 { | 9 namespace v8 { |
| 10 namespace internal { | 10 namespace internal { |
| 11 namespace compiler { | 11 namespace compiler { |
| 12 | 12 |
| 13 typedef class AstLoopAssignmentAnalyzer ALAA; // for code shortitude. | 13 typedef class AstLoopAssignmentAnalyzer ALAA; // for code shortitude. |
| 14 | 14 |
| 15 ALAA::AstLoopAssignmentAnalyzer(Zone* zone, CompilationInfo* info) | 15 ALAA::AstLoopAssignmentAnalyzer(Zone* zone, CompilationInfo* info) |
| 16 : info_(info), loop_stack_(zone) { | 16 : info_(info), loop_stack_(zone) { |
| 17 InitializeAstVisitor(info->isolate(), zone); | 17 InitializeAstVisitor(info->isolate(), zone); |
| 18 } | 18 } |
| 19 | 19 |
| 20 | 20 |
| 21 LoopAssignmentAnalysis* ALAA::Analyze() { | 21 LoopAssignmentAnalysis* ALAA::Analyze() { |
| 22 LoopAssignmentAnalysis* a = new (zone()) LoopAssignmentAnalysis(zone()); | 22 LoopAssignmentAnalysis* a = new (zone()) LoopAssignmentAnalysis(zone()); |
| 23 result_ = a; | 23 result_ = a; |
| 24 VisitStatements(info()->function()->body()); | 24 VisitStatements(info()->literal()->body()); |
| 25 result_ = NULL; | 25 result_ = NULL; |
| 26 return a; | 26 return a; |
| 27 } | 27 } |
| 28 | 28 |
| 29 | 29 |
| 30 void ALAA::Enter(IterationStatement* loop) { | 30 void ALAA::Enter(IterationStatement* loop) { |
| 31 int num_variables = 1 + info()->scope()->num_parameters() + | 31 int num_variables = 1 + info()->scope()->num_parameters() + |
| 32 info()->scope()->num_stack_slots(); | 32 info()->scope()->num_stack_slots(); |
| 33 BitVector* bits = new (zone()) BitVector(num_variables, zone()); | 33 BitVector* bits = new (zone()) BitVector(num_variables, zone()); |
| 34 if (info()->is_osr() && info()->osr_ast_id() == loop->OsrEntryId()) | 34 if (info()->is_osr() && info()->osr_ast_id() == loop->OsrEntryId()) |
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| 289 int count = 0; | 289 int count = 0; |
| 290 int var_index = AstLoopAssignmentAnalyzer::GetVariableIndex(scope, var); | 290 int var_index = AstLoopAssignmentAnalyzer::GetVariableIndex(scope, var); |
| 291 for (size_t i = 0; i < list_.size(); i++) { | 291 for (size_t i = 0; i < list_.size(); i++) { |
| 292 if (list_[i].second->Contains(var_index)) count++; | 292 if (list_[i].second->Contains(var_index)) count++; |
| 293 } | 293 } |
| 294 return count; | 294 return count; |
| 295 } | 295 } |
| 296 } // namespace compiler | 296 } // namespace compiler |
| 297 } // namespace internal | 297 } // namespace internal |
| 298 } // namespace v8 | 298 } // namespace v8 |
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