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60 lines
1.7 KiB
60 lines
1.7 KiB
// Copyright 2014 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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#ifndef V8_COMPILER_JS_GENERIC_LOWERING_H_
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#define V8_COMPILER_JS_GENERIC_LOWERING_H_
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#include "src/code-factory.h"
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#include "src/compiler/graph-reducer.h"
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#include "src/compiler/linkage.h"
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#include "src/compiler/opcodes.h"
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namespace v8 {
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namespace internal {
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namespace compiler {
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// Forward declarations.
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class CommonOperatorBuilder;
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class JSGraph;
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class MachineOperatorBuilder;
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class Linkage;
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// Lowers JS-level operators to runtime and IC calls in the "generic" case.
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class JSGenericLowering final : public Reducer {
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public:
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JSGenericLowering(bool is_typing_enabled, JSGraph* jsgraph);
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~JSGenericLowering() final;
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Reduction Reduce(Node* node) final;
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protected:
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#define DECLARE_LOWER(x) void Lower##x(Node* node);
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// Dispatched depending on opcode.
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JS_OP_LIST(DECLARE_LOWER)
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#undef DECLARE_LOWER
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// Helpers to replace existing nodes with a generic call.
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void ReplaceWithCompareIC(Node* node, Token::Value token);
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void ReplaceWithStubCall(Node* node, Callable c, CallDescriptor::Flags flags);
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void ReplaceWithBuiltinCall(Node* node, Builtins::JavaScript id, int args);
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void ReplaceWithRuntimeCall(Node* node, Runtime::FunctionId f, int args = -1);
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Zone* zone() const;
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Isolate* isolate() const;
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JSGraph* jsgraph() const { return jsgraph_; }
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Graph* graph() const;
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CommonOperatorBuilder* common() const;
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MachineOperatorBuilder* machine() const;
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private:
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bool const is_typing_enabled_;
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JSGraph* const jsgraph_;
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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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#endif // V8_COMPILER_JS_GENERIC_LOWERING_H_
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