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| 1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 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/interpreter/bytecode-generator.h" | 5 #include "src/interpreter/bytecode-generator.h" |
| 6 | 6 |
| 7 #include "src/ast/scopes.h" | 7 #include "src/ast/scopes.h" |
| 8 #include "src/code-stubs.h" | 8 #include "src/code-stubs.h" |
| 9 #include "src/compiler.h" | 9 #include "src/compiler.h" |
| 10 #include "src/interpreter/bytecode-flags.h" | 10 #include "src/interpreter/bytecode-flags.h" |
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| 619 execution_control_(nullptr), | 619 execution_control_(nullptr), |
| 620 execution_context_(nullptr), | 620 execution_context_(nullptr), |
| 621 execution_result_(nullptr), | 621 execution_result_(nullptr), |
| 622 register_allocator_(nullptr), | 622 register_allocator_(nullptr), |
| 623 generator_resume_points_(info->literal()->yield_count(), info->zone()), | 623 generator_resume_points_(info->literal()->yield_count(), info->zone()), |
| 624 generator_state_(), | 624 generator_state_(), |
| 625 loop_depth_(0) { | 625 loop_depth_(0) { |
| 626 InitializeAstVisitor(isolate()->stack_guard()->real_climit()); | 626 InitializeAstVisitor(isolate()->stack_guard()->real_climit()); |
| 627 } | 627 } |
| 628 | 628 |
| 629 Handle<BytecodeArray> BytecodeGenerator::MakeBytecode() { | 629 Handle<BytecodeArray> BytecodeGenerator::FinalizeBytecode() { |
| 630 // Create an inner HandleScope to avoid unnecessarily canonicalizing handles | 630 // Create an inner HandleScope to avoid unnecessarily canonicalizing handles |
| 631 // created as part of bytecode finalization. | 631 // created as part of bytecode finalization. |
| 632 HandleScope scope(isolate()); | 632 HandleScope scope(isolate()); |
| 633 | 633 AllocateDeferredConstants(); |
| 634 GenerateBytecode(); | |
| 635 FinalizeBytecode(); | |
| 636 | |
| 637 if (HasStackOverflow()) return Handle<BytecodeArray>(); | 634 if (HasStackOverflow()) return Handle<BytecodeArray>(); |
| 638 | |
| 639 return scope.CloseAndEscape(builder()->ToBytecodeArray()); | 635 return scope.CloseAndEscape(builder()->ToBytecodeArray()); |
| 640 } | 636 } |
| 641 | 637 |
| 642 void BytecodeGenerator::FinalizeBytecode() { | 638 void BytecodeGenerator::AllocateDeferredConstants() { |
| 643 // Build global declaration pair arrays. | 639 // Build global declaration pair arrays. |
| 644 for (GlobalDeclarationsBuilder* globals_builder : global_declarations_) { | 640 for (GlobalDeclarationsBuilder* globals_builder : global_declarations_) { |
| 645 Handle<FixedArray> declarations = | 641 Handle<FixedArray> declarations = |
| 646 globals_builder->AllocateDeclarationPairs(info()); | 642 globals_builder->AllocateDeclarationPairs(info()); |
| 647 if (declarations.is_null()) return SetStackOverflow(); | 643 if (declarations.is_null()) return SetStackOverflow(); |
| 648 builder()->InsertConstantPoolEntryAt(globals_builder->constant_pool_entry(), | 644 builder()->InsertConstantPoolEntryAt(globals_builder->constant_pool_entry(), |
| 649 declarations); | 645 declarations); |
| 650 } | 646 } |
| 651 | 647 |
| 652 // Find or build shared function infos. | 648 // Find or build shared function infos. |
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| 3277 return execution_context()->scope()->language_mode(); | 3273 return execution_context()->scope()->language_mode(); |
| 3278 } | 3274 } |
| 3279 | 3275 |
| 3280 int BytecodeGenerator::feedback_index(FeedbackVectorSlot slot) const { | 3276 int BytecodeGenerator::feedback_index(FeedbackVectorSlot slot) const { |
| 3281 return TypeFeedbackVector::GetIndex(slot); | 3277 return TypeFeedbackVector::GetIndex(slot); |
| 3282 } | 3278 } |
| 3283 | 3279 |
| 3284 } // namespace interpreter | 3280 } // namespace interpreter |
| 3285 } // namespace internal | 3281 } // namespace internal |
| 3286 } // namespace v8 | 3282 } // namespace v8 |
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