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// Copyright 2012 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_STATE_H_
#define V8_IC_STATE_H_
#include "src/macro-assembler.h"
#include "src/parsing/token.h"
namespace v8 {
namespace internal {
const int kMaxKeyedPolymorphism = 4;
class ICUtility : public AllStatic {
public:
// Clear the inline cache to initial state.
static void Clear(Isolate* isolate, Address address, Address constant_pool);
};
class CompareICState {
public:
// The type/state lattice is defined by the following inequations:
// UNINITIALIZED < ...
// ... < GENERIC
// SMI < NUMBER
// INTERNALIZED_STRING < STRING
// INTERNALIZED_STRING < UNIQUE_NAME
// KNOWN_RECEIVER < RECEIVER
enum State {
UNINITIALIZED,
BOOLEAN,
SMI,
NUMBER,
STRING,
INTERNALIZED_STRING,
UNIQUE_NAME, // Symbol or InternalizedString
RECEIVER, // JSReceiver
KNOWN_RECEIVER, // JSReceiver with specific map (faster check)
GENERIC
};
static State NewInputState(State old_state, Handle<Object> value);
static const char* GetStateName(CompareICState::State state);
static State TargetState(Isolate* isolate, State old_state, State old_left,
State old_right, Token::Value op,
bool has_inlined_smi_code, Handle<Object> x,
Handle<Object> y);
};
} // namespace internal
} // namespace v8
#endif // V8_IC_STATE_H_
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