// 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_IC_CALL_OPTIMIZATION_H_ #define V8_IC_CALL_OPTIMIZATION_H_ #include "src/code-stubs.h" #include "src/macro-assembler.h" #include "src/objects.h" namespace v8 { namespace internal { // Holds information about possible function call optimizations. class CallOptimization BASE_EMBEDDED { public: explicit CallOptimization(Handle<Object> function); Context* GetAccessorContext(Map* holder_map) const; bool IsCrossContextLazyAccessorPair(Context* native_context, Map* holder_map) const; bool is_constant_call() const { return !constant_function_.is_null(); } Handle<JSFunction> constant_function() const { DCHECK(is_constant_call()); return constant_function_; } bool is_simple_api_call() const { return is_simple_api_call_; } Handle<FunctionTemplateInfo> expected_receiver_type() const { DCHECK(is_simple_api_call()); return expected_receiver_type_; } Handle<CallHandlerInfo> api_call_info() const { DCHECK(is_simple_api_call()); return api_call_info_; } enum HolderLookup { kHolderNotFound, kHolderIsReceiver, kHolderFound }; Handle<JSObject> LookupHolderOfExpectedType( Handle<Map> receiver_map, HolderLookup* holder_lookup) const; // Check if the api holder is between the receiver and the holder. bool IsCompatibleReceiver(Handle<Object> receiver, Handle<JSObject> holder) const; // Check if the api holder is between the receiver and the holder. bool IsCompatibleReceiverMap(Handle<Map> receiver_map, Handle<JSObject> holder) const; private: void Initialize(Handle<JSFunction> function); void Initialize(Handle<FunctionTemplateInfo> function_template_info); // Determines whether the given function can be called using the // fast api call builtin. void AnalyzePossibleApiFunction(Handle<JSFunction> function); Handle<JSFunction> constant_function_; bool is_simple_api_call_; Handle<FunctionTemplateInfo> expected_receiver_type_; Handle<CallHandlerInfo> api_call_info_; }; } // namespace internal } // namespace v8 #endif // V8_IC_CALL_OPTIMIZATION_H_