| // Copyright 2014 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_GENERIC_LOWERING_H_ |
| #define V8_COMPILER_JS_GENERIC_LOWERING_H_ |
| |
| #include "src/allocation.h" |
| #include "src/code-factory.h" |
| #include "src/compiler/graph.h" |
| #include "src/compiler/graph-reducer.h" |
| #include "src/compiler/js-graph.h" |
| #include "src/compiler/linkage.h" |
| #include "src/compiler/opcodes.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace compiler { |
| |
| // Forward declarations. |
| class CommonOperatorBuilder; |
| class MachineOperatorBuilder; |
| class Linkage; |
| |
| |
| // Lowers JS-level operators to runtime and IC calls in the "generic" case. |
| class JSGenericLowering FINAL : public Reducer { |
| public: |
| JSGenericLowering(CompilationInfo* info, JSGraph* graph); |
| ~JSGenericLowering() FINAL {} |
| |
| Reduction Reduce(Node* node) FINAL; |
| |
| protected: |
| #define DECLARE_LOWER(x) void Lower##x(Node* node); |
| // Dispatched depending on opcode. |
| JS_OP_LIST(DECLARE_LOWER) |
| #undef DECLARE_LOWER |
| |
| // Helpers to patch existing nodes in the graph. |
| void PatchOperator(Node* node, const Operator* new_op); |
| void PatchInsertInput(Node* node, int index, Node* input); |
| |
| // Helpers to replace existing nodes with a generic call. |
| void ReplaceWithCompareIC(Node* node, Token::Value token); |
| void ReplaceWithStubCall(Node* node, Callable c, CallDescriptor::Flags flags); |
| void ReplaceWithBuiltinCall(Node* node, Builtins::JavaScript id, int args); |
| void ReplaceWithRuntimeCall(Node* node, Runtime::FunctionId f, int args = -1); |
| |
| // Helper for optimization of JSCallFunction. |
| bool TryLowerDirectJSCall(Node* node); |
| |
| Zone* zone() const { return graph()->zone(); } |
| Isolate* isolate() const { return zone()->isolate(); } |
| JSGraph* jsgraph() const { return jsgraph_; } |
| Graph* graph() const { return jsgraph()->graph(); } |
| Linkage* linkage() const { return linkage_; } |
| CompilationInfo* info() const { return info_; } |
| CommonOperatorBuilder* common() const { return jsgraph()->common(); } |
| MachineOperatorBuilder* machine() const { return jsgraph()->machine(); } |
| |
| private: |
| CompilationInfo* info_; |
| JSGraph* jsgraph_; |
| Linkage* linkage_; |
| }; |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_COMPILER_JS_GENERIC_LOWERING_H_ |