// Copyright 2018 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "src/compiler/js-heap-copy-reducer.h" #include "src/compiler/common-operator.h" #include "src/compiler/js-heap-broker.h" #include "src/compiler/js-operator.h" #include "src/compiler/node-properties.h" #include "src/compiler/simplified-operator.h" #include "src/heap/factory-inl.h" #include "src/objects/map.h" #include "src/objects/scope-info.h" namespace v8 { namespace internal { namespace compiler { // In the functions below, we call the ObjectRef (or subclass) constructor in // order to trigger serialization if not yet done. JSHeapCopyReducer::JSHeapCopyReducer(JSHeapBroker* broker) : broker_(broker) {} JSHeapBroker* JSHeapCopyReducer::broker() { return broker_; } Reduction JSHeapCopyReducer::Reduce(Node* node) { switch (node->opcode()) { case IrOpcode::kHeapConstant: { ObjectRef object(broker(), HeapConstantOf(node->op())); if (object.IsJSFunction()) object.AsJSFunction().Serialize(); if (object.IsJSObject()) object.AsJSObject().SerializeObjectCreateMap(); if (object.IsModule()) object.AsModule().Serialize(); if (object.IsContext()) object.AsContext().Serialize(); break; } case IrOpcode::kJSCreateArray: { CreateArrayParameters const& p = CreateArrayParametersOf(node->op()); Handle<AllocationSite> site; if (p.site().ToHandle(&site)) AllocationSiteRef(broker(), site); break; } case IrOpcode::kJSCreateArguments: { Node* const frame_state = NodeProperties::GetFrameStateInput(node); FrameStateInfo state_info = FrameStateInfoOf(frame_state->op()); SharedFunctionInfoRef shared(broker(), state_info.shared_info().ToHandleChecked()); break; } case IrOpcode::kJSCreateBlockContext: { ScopeInfoRef(broker(), ScopeInfoOf(node->op())); break; } case IrOpcode::kJSCreateBoundFunction: { CreateBoundFunctionParameters const& p = CreateBoundFunctionParametersOf(node->op()); MapRef(broker(), p.map()); break; } case IrOpcode::kJSCreateCatchContext: { ScopeInfoRef(broker(), ScopeInfoOf(node->op())); break; } case IrOpcode::kJSCreateClosure: { CreateClosureParameters const& p = CreateClosureParametersOf(node->op()); SharedFunctionInfoRef(broker(), p.shared_info()); HeapObjectRef(broker(), p.feedback_cell()); HeapObjectRef(broker(), p.code()); break; } case IrOpcode::kJSCreateEmptyLiteralArray: { FeedbackParameter const& p = FeedbackParameterOf(node->op()); FeedbackVectorRef(broker(), p.feedback().vector()).SerializeSlots(); break; } case IrOpcode::kJSCreateFunctionContext: { CreateFunctionContextParameters const& p = CreateFunctionContextParametersOf(node->op()); ScopeInfoRef(broker(), p.scope_info()); break; } case IrOpcode::kJSCreateLiteralArray: case IrOpcode::kJSCreateLiteralObject: { CreateLiteralParameters const& p = CreateLiteralParametersOf(node->op()); FeedbackVectorRef(broker(), p.feedback().vector()).SerializeSlots(); break; } case IrOpcode::kJSCreateLiteralRegExp: { CreateLiteralParameters const& p = CreateLiteralParametersOf(node->op()); FeedbackVectorRef(broker(), p.feedback().vector()).SerializeSlots(); break; } case IrOpcode::kJSCreateWithContext: { ScopeInfoRef(broker(), ScopeInfoOf(node->op())); break; } case IrOpcode::kJSLoadNamed: case IrOpcode::kJSStoreNamed: { NamedAccess const& p = NamedAccessOf(node->op()); NameRef(broker(), p.name()); break; } case IrOpcode::kStoreField: case IrOpcode::kLoadField: { FieldAccess access = FieldAccessOf(node->op()); Handle<Map> map_handle; if (access.map.ToHandle(&map_handle)) { MapRef(broker(), map_handle); } Handle<Name> name_handle; if (access.name.ToHandle(&name_handle)) { NameRef(broker(), name_handle); } break; } case IrOpcode::kMapGuard: { ZoneHandleSet<Map> const maps = MapGuardMapsOf(node->op()).maps(); for (Handle<Map> map : maps) { MapRef(broker(), map); } break; } case IrOpcode::kCheckMaps: { ZoneHandleSet<Map> const maps = CheckMapsParametersOf(node->op()).maps(); for (Handle<Map> map : maps) { MapRef(broker(), map); } break; } case IrOpcode::kCompareMaps: { ZoneHandleSet<Map> const maps = CompareMapsParametersOf(node->op()).maps(); for (Handle<Map> map : maps) { MapRef(broker(), map); } break; } default: break; } return NoChange(); } } // namespace compiler } // namespace internal } // namespace v8