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// Copyright 2016 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.
#ifndef V8_COMPILER_JS_CREATE_LOWERING_H_
#define V8_COMPILER_JS_CREATE_LOWERING_H_
#include "src/compiler/graph-reducer.h"
namespace v8 {
namespace internal {
// Forward declarations.
class AllocationSiteUsageContext;
class CompilationDependencies;
class Factory;
namespace compiler {
// Forward declarations.
class CommonOperatorBuilder;
class JSGraph;
class JSOperatorBuilder;
class MachineOperatorBuilder;
class SimplifiedOperatorBuilder;
// Lowers JSCreate-level operators to fast (inline) allocations.
class JSCreateLowering final : public AdvancedReducer {
public:
JSCreateLowering(Editor* editor, CompilationDependencies* dependencies,
JSGraph* jsgraph, MaybeHandle<LiteralsArray> literals_array,
MaybeHandle<Context> native_context, Zone* zone)
: AdvancedReducer(editor),
dependencies_(dependencies),
jsgraph_(jsgraph),
literals_array_(literals_array),
native_context_(native_context),
zone_(zone) {}
~JSCreateLowering() final {}
Reduction Reduce(Node* node) final;
private:
Reduction ReduceJSCreate(Node* node);
Reduction ReduceJSCreateArguments(Node* node);
Reduction ReduceJSCreateArray(Node* node);
Reduction ReduceJSCreateClosure(Node* node);
Reduction ReduceJSCreateIterResultObject(Node* node);
Reduction ReduceJSCreateLiteral(Node* node);
Reduction ReduceJSCreateFunctionContext(Node* node);
Reduction ReduceJSCreateWithContext(Node* node);
Reduction ReduceJSCreateCatchContext(Node* node);
Reduction ReduceJSCreateBlockContext(Node* node);
Reduction ReduceNewArray(Node* node, Node* length, int capacity,
Handle<AllocationSite> site);
Node* AllocateArguments(Node* effect, Node* control, Node* frame_state);
Node* AllocateRestArguments(Node* effect, Node* control, Node* frame_state,
int start_index);
Node* AllocateAliasedArguments(Node* effect, Node* control, Node* frame_state,
Node* context, Handle<SharedFunctionInfo>,
bool* has_aliased_arguments);
Node* AllocateElements(Node* effect, Node* control,
ElementsKind elements_kind, int capacity,
PretenureFlag pretenure);
Node* AllocateFastLiteral(Node* effect, Node* control,
Handle<JSObject> boilerplate,
AllocationSiteUsageContext* site_context);
Node* AllocateFastLiteralElements(Node* effect, Node* control,
Handle<JSObject> boilerplate,
PretenureFlag pretenure,
AllocationSiteUsageContext* site_context);
Reduction ReduceNewArrayToStubCall(Node* node, Handle<AllocationSite> site);
// Infers the LiteralsArray to use for a given {node}.
MaybeHandle<LiteralsArray> GetSpecializationLiterals(Node* node);
// Infers the native context to use for a given {node}.
MaybeHandle<Context> GetSpecializationNativeContext(Node* node);
Factory* factory() const;
Graph* graph() const;
JSGraph* jsgraph() const { return jsgraph_; }
Isolate* isolate() const;
JSOperatorBuilder* javascript() const;
CommonOperatorBuilder* common() const;
SimplifiedOperatorBuilder* simplified() const;
MachineOperatorBuilder* machine() const;
CompilationDependencies* dependencies() const { return dependencies_; }
Zone* zone() const { return zone_; }
CompilationDependencies* const dependencies_;
JSGraph* const jsgraph_;
MaybeHandle<LiteralsArray> const literals_array_;
MaybeHandle<Context> const native_context_;
Zone* const zone_;
};
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_COMPILER_JS_CREATE_LOWERING_H_
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