// 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/api/api-arguments.h" #include "src/objects/objects.h" namespace v8 { namespace internal { // Holds information about possible function call optimizations. class CallOptimization { public: template <class IsolateT> CallOptimization(IsolateT* isolate, 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(); } bool accept_any_receiver() const { return accept_any_receiver_; } bool requires_signature_check() const { return !expected_receiver_type_.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 }; template <class IsolateT> Handle<JSObject> LookupHolderOfExpectedType( IsolateT* isolate, Handle<Map> receiver_map, HolderLookup* holder_lookup) const; bool IsCompatibleReceiverMap(Handle<JSObject> api_holder, Handle<JSObject> holder, HolderLookup) const; private: template <class IsolateT> void Initialize(IsolateT* isolate, Handle<JSFunction> function); template <class IsolateT> void Initialize(IsolateT* isolate, Handle<FunctionTemplateInfo> function_template_info); // Determines whether the given function can be called using the // fast api call builtin. template <class IsolateT> void AnalyzePossibleApiFunction(IsolateT* isolate, Handle<JSFunction> function); Handle<JSFunction> constant_function_; Handle<FunctionTemplateInfo> expected_receiver_type_; Handle<CallHandlerInfo> api_call_info_; // TODO(gsathya): Change these to be a bitfield and do a single fast check // rather than two checks. bool is_simple_api_call_ = false; bool accept_any_receiver_ = false; }; } // namespace internal } // namespace v8 #endif // V8_IC_CALL_OPTIMIZATION_H_