| // Copyright 2015 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_NATIVE_CONTEXT_SPECIALIZATION_H_ |
| #define V8_COMPILER_JS_NATIVE_CONTEXT_SPECIALIZATION_H_ |
| |
| #include "src/base/flags.h" |
| #include "src/compiler/graph-reducer.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| // Forward declarations. |
| class CompilationDependencies; |
| class Factory; |
| class FeedbackNexus; |
| class TypeCache; |
| |
| |
| namespace compiler { |
| |
| // Forward declarations. |
| enum class AccessMode; |
| class CommonOperatorBuilder; |
| class JSGraph; |
| class JSOperatorBuilder; |
| class MachineOperatorBuilder; |
| class SimplifiedOperatorBuilder; |
| |
| |
| // Specializes a given JSGraph to a given native context, potentially constant |
| // folding some {LoadGlobal} nodes or strength reducing some {StoreGlobal} |
| // nodes. And also specializes {LoadNamed} and {StoreNamed} nodes according |
| // to type feedback (if available). |
| class JSNativeContextSpecialization final : public AdvancedReducer { |
| public: |
| // Flags that control the mode of operation. |
| enum Flag { |
| kNoFlags = 0u, |
| kBailoutOnUninitialized = 1u << 0, |
| kDeoptimizationEnabled = 1u << 1, |
| }; |
| typedef base::Flags<Flag> Flags; |
| |
| JSNativeContextSpecialization(Editor* editor, JSGraph* jsgraph, Flags flags, |
| MaybeHandle<Context> native_context, |
| CompilationDependencies* dependencies, |
| Zone* zone); |
| |
| Reduction Reduce(Node* node) final; |
| |
| private: |
| Reduction ReduceJSLoadContext(Node* node); |
| Reduction ReduceJSLoadNamed(Node* node); |
| Reduction ReduceJSStoreNamed(Node* node); |
| Reduction ReduceJSLoadProperty(Node* node); |
| Reduction ReduceJSStoreProperty(Node* node); |
| |
| Reduction ReduceElementAccess(Node* node, Node* index, Node* value, |
| MapHandleList const& receiver_maps, |
| AccessMode access_mode, |
| LanguageMode language_mode, |
| KeyedAccessStoreMode store_mode); |
| Reduction ReduceKeyedAccess(Node* node, Node* index, Node* value, |
| FeedbackNexus const& nexus, |
| AccessMode access_mode, |
| LanguageMode language_mode, |
| KeyedAccessStoreMode store_mode); |
| Reduction ReduceNamedAccess(Node* node, Node* value, |
| FeedbackNexus const& nexus, Handle<Name> name, |
| AccessMode access_mode, |
| LanguageMode language_mode); |
| Reduction ReduceNamedAccess(Node* node, Node* value, |
| MapHandleList const& receiver_maps, |
| Handle<Name> name, AccessMode access_mode, |
| LanguageMode language_mode, |
| Node* index = nullptr); |
| |
| Reduction ReduceSoftDeoptimize(Node* node); |
| |
| // Adds stability dependencies on all prototypes of every class in |
| // {receiver_type} up to (and including) the {holder}. |
| void AssumePrototypesStable(Type* receiver_type, |
| Handle<Context> native_context, |
| Handle<JSObject> holder); |
| |
| // Retrieve the native context from the given {node} if known. |
| MaybeHandle<Context> GetNativeContext(Node* node); |
| |
| Graph* graph() const; |
| JSGraph* jsgraph() const { return jsgraph_; } |
| Isolate* isolate() const; |
| Factory* factory() const; |
| CommonOperatorBuilder* common() const; |
| JSOperatorBuilder* javascript() const; |
| SimplifiedOperatorBuilder* simplified() const; |
| MachineOperatorBuilder* machine() const; |
| Flags flags() const { return flags_; } |
| MaybeHandle<Context> native_context() const { return native_context_; } |
| CompilationDependencies* dependencies() const { return dependencies_; } |
| Zone* zone() const { return zone_; } |
| |
| JSGraph* const jsgraph_; |
| Flags const flags_; |
| MaybeHandle<Context> native_context_; |
| CompilationDependencies* const dependencies_; |
| Zone* const zone_; |
| TypeCache const& type_cache_; |
| |
| DISALLOW_COPY_AND_ASSIGN(JSNativeContextSpecialization); |
| }; |
| |
| DEFINE_OPERATORS_FOR_FLAGS(JSNativeContextSpecialization::Flags) |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_COMPILER_JS_NATIVE_CONTEXT_SPECIALIZATION_H_ |