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// 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:
CallOptimization(Isolate* 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(); }
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(Isolate* isolate, Handle<JSFunction> function);
void Initialize(Isolate* isolate,
Handle<FunctionTemplateInfo> function_template_info);
// Determines whether the given function can be called using the
// fast api call builtin.
void AnalyzePossibleApiFunction(Isolate* isolate,
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_