// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/compiler/js-heap-copy-reducer.h"
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#include "src/compiler/common-operator.h"
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#include "src/compiler/js-heap-broker.h"
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#include "src/compiler/js-operator.h"
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#include "src/heap/factory-inl.h"
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#include "src/objects/map.h"
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#include "src/objects/scope-info.h"
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namespace v8 {
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namespace internal {
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namespace compiler {
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// In the functions below, we call the ObjectRef (or subclass) constructor in
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// order to trigger serialization if not yet done.
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JSHeapCopyReducer::JSHeapCopyReducer(JSHeapBroker* broker) : broker_(broker) {}
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JSHeapBroker* JSHeapCopyReducer::broker() { return broker_; }
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Reduction JSHeapCopyReducer::Reduce(Node* node) {
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switch (node->opcode()) {
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case IrOpcode::kHeapConstant: {
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ObjectRef(broker(), HeapConstantOf(node->op()));
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break;
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}
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case IrOpcode::kJSCreateArray: {
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CreateArrayParameters const& p = CreateArrayParametersOf(node->op());
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Handle<AllocationSite> site;
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if (p.site().ToHandle(&site)) AllocationSiteRef(broker(), site);
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break;
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}
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case IrOpcode::kJSCreateCatchContext: {
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ScopeInfoRef(broker(), ScopeInfoOf(node->op()));
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break;
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}
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case IrOpcode::kJSCreateClosure: {
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CreateClosureParameters const& p = CreateClosureParametersOf(node->op());
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SharedFunctionInfoRef(broker(), p.shared_info());
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HeapObjectRef(broker(), p.feedback_cell());
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HeapObjectRef(broker(), p.code());
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break;
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}
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case IrOpcode::kJSCreateEmptyLiteralArray: {
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// TODO(neis, jarin) Force serialization of the entire feedback vector
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// rather than just the one element.
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FeedbackParameter const& p = FeedbackParameterOf(node->op());
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FeedbackVectorRef(broker(), p.feedback().vector());
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Handle<Object> feedback(
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p.feedback().vector()->Get(p.feedback().slot())->ToObject(),
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broker()->isolate());
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ObjectRef(broker(), feedback);
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break;
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}
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case IrOpcode::kJSCreateFunctionContext: {
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CreateFunctionContextParameters const& p =
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CreateFunctionContextParametersOf(node->op());
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ScopeInfoRef(broker(), p.scope_info());
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break;
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}
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case IrOpcode::kJSCreateLiteralArray:
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case IrOpcode::kJSCreateLiteralObject: {
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CreateLiteralParameters const& p = CreateLiteralParametersOf(node->op());
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ObjectRef(broker(), p.feedback().vector());
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break;
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}
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case IrOpcode::kJSLoadNamed:
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case IrOpcode::kJSStoreNamed: {
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NamedAccess const& p = NamedAccessOf(node->op());
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NameRef(broker(), p.name());
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break;
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}
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default:
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break;
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}
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return NoChange();
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}
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} // namespace compiler
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} // namespace internal
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} // namespace v8
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