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// 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/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(broker(), HeapConstantOf(node->op()));
break;
}
case IrOpcode::kJSCreateArray: {
CreateArrayParameters const& p = CreateArrayParametersOf(node->op());
Handle<AllocationSite> site;
if (p.site().ToHandle(&site)) AllocationSiteRef(broker(), site);
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: {
// TODO(neis, jarin) Force serialization of the entire feedback vector
// rather than just the one element.
FeedbackParameter const& p = FeedbackParameterOf(node->op());
FeedbackVectorRef(broker(), p.feedback().vector());
Handle<Object> feedback(
p.feedback().vector()->Get(p.feedback().slot())->ToObject(),
broker()->isolate());
ObjectRef(broker(), feedback);
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());
ObjectRef(broker(), p.feedback().vector());
break;
}
case IrOpcode::kJSLoadNamed:
case IrOpcode::kJSStoreNamed: {
NamedAccess const& p = NamedAccessOf(node->op());
NameRef(broker(), p.name());
break;
}
default:
break;
}
return NoChange();
}
} // namespace compiler
} // namespace internal
} // namespace v8
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