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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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| 676 native_function_literals_(0, info->zone()), | 676 native_function_literals_(0, info->zone()), |
| 677 execution_control_(nullptr), | 677 execution_control_(nullptr), |
| 678 execution_context_(nullptr), | 678 execution_context_(nullptr), |
| 679 execution_result_(nullptr), | 679 execution_result_(nullptr), |
| 680 register_allocator_(nullptr), | 680 register_allocator_(nullptr), |
| 681 generator_resume_points_(info->literal()->yield_count(), info->zone()), | 681 generator_resume_points_(info->literal()->yield_count(), info->zone()), |
| 682 generator_state_(), | 682 generator_state_(), |
| 683 loop_depth_(0), | 683 loop_depth_(0), |
| 684 home_object_symbol_(info->isolate()->factory()->home_object_symbol()), | 684 home_object_symbol_(info->isolate()->factory()->home_object_symbol()), |
| 685 prototype_string_(info->isolate()->factory()->prototype_string()) { | 685 prototype_string_(info->isolate()->factory()->prototype_string()) { |
| 686 InitializeAstVisitor(info->isolate()->stack_guard()->real_climit()); | |
| 687 } | 686 } |
| 688 | 687 |
| 689 Handle<BytecodeArray> BytecodeGenerator::FinalizeBytecode(Isolate* isolate) { | 688 Handle<BytecodeArray> BytecodeGenerator::FinalizeBytecode(Isolate* isolate) { |
| 690 // Create an inner HandleScope to avoid unnecessarily canonicalizing handles | 689 // Create an inner HandleScope to avoid unnecessarily canonicalizing handles |
| 691 // created as part of bytecode finalization. | 690 // created as part of bytecode finalization. |
| 692 HandleScope scope(isolate); | 691 HandleScope scope(isolate); |
| 693 AllocateDeferredConstants(); | 692 AllocateDeferredConstants(); |
| 694 if (HasStackOverflow()) return Handle<BytecodeArray>(); | 693 if (HasStackOverflow()) return Handle<BytecodeArray>(); |
| 695 return scope.CloseAndEscape(builder()->ToBytecodeArray(isolate)); | 694 return scope.CloseAndEscape(builder()->ToBytecodeArray(isolate)); |
| 696 } | 695 } |
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| 719 native_function_literals_) { | 718 native_function_literals_) { |
| 720 NativeFunctionLiteral* expr = literal.first; | 719 NativeFunctionLiteral* expr = literal.first; |
| 721 Handle<SharedFunctionInfo> shared_info = | 720 Handle<SharedFunctionInfo> shared_info = |
| 722 Compiler::GetSharedFunctionInfoForNative(expr->extension(), | 721 Compiler::GetSharedFunctionInfoForNative(expr->extension(), |
| 723 expr->name()); | 722 expr->name()); |
| 724 if (shared_info.is_null()) return SetStackOverflow(); | 723 if (shared_info.is_null()) return SetStackOverflow(); |
| 725 builder()->InsertConstantPoolEntryAt(literal.second, shared_info); | 724 builder()->InsertConstantPoolEntryAt(literal.second, shared_info); |
| 726 } | 725 } |
| 727 } | 726 } |
| 728 | 727 |
| 729 void BytecodeGenerator::GenerateBytecode() { | 728 void BytecodeGenerator::GenerateBytecode(uintptr_t stack_limit) { |
| 730 DisallowHeapAllocation no_allocation; | 729 DisallowHeapAllocation no_allocation; |
| 731 DisallowHandleAllocation no_handles; | 730 DisallowHandleAllocation no_handles; |
| 732 DisallowHandleDereference no_deref; | 731 DisallowHandleDereference no_deref; |
| 733 | 732 |
| 733 InitializeAstVisitor(stack_limit); |
| 734 |
| 734 // Initialize the incoming context. | 735 // Initialize the incoming context. |
| 735 ContextScope incoming_context(this, scope(), false); | 736 ContextScope incoming_context(this, scope(), false); |
| 736 | 737 |
| 737 // Initialize control scope. | 738 // Initialize control scope. |
| 738 ControlScopeForTopLevel control(this); | 739 ControlScopeForTopLevel control(this); |
| 739 | 740 |
| 740 RegisterAllocationScope register_scope(this); | 741 RegisterAllocationScope register_scope(this); |
| 741 | 742 |
| 742 if (IsResumableFunction(info()->literal()->kind())) { | 743 if (IsResumableFunction(info()->literal()->kind())) { |
| 743 generator_state_ = register_allocator()->NewRegister(); | 744 generator_state_ = register_allocator()->NewRegister(); |
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| 3403 return execution_context()->scope()->language_mode(); | 3404 return execution_context()->scope()->language_mode(); |
| 3404 } | 3405 } |
| 3405 | 3406 |
| 3406 int BytecodeGenerator::feedback_index(FeedbackVectorSlot slot) const { | 3407 int BytecodeGenerator::feedback_index(FeedbackVectorSlot slot) const { |
| 3407 return TypeFeedbackVector::GetIndex(slot); | 3408 return TypeFeedbackVector::GetIndex(slot); |
| 3408 } | 3409 } |
| 3409 | 3410 |
| 3410 } // namespace interpreter | 3411 } // namespace interpreter |
| 3411 } // namespace internal | 3412 } // namespace internal |
| 3412 } // namespace v8 | 3413 } // namespace v8 |
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