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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ByValInfo_h
#define ByValInfo_h
#include <wtf/Platform.h>
#if ENABLE(JIT)
#include "ClassInfo.h"
#include "CodeLocation.h"
#include "IndexingType.h"
#include "JITStubRoutine.h"
#include "Structure.h"
namespace JSC {
enum JITArrayMode {
JITInt32,
JITDouble,
JITContiguous,
JITArrayStorage,
JITInt8Array,
JITInt16Array,
JITInt32Array,
JITUint8Array,
JITUint8ClampedArray,
JITUint16Array,
JITUint32Array,
JITFloat32Array,
JITFloat64Array
};
inline bool isOptimizableIndexingType(IndexingType indexingType)
{
switch (indexingType) {
case ALL_INT32_INDEXING_TYPES:
case ALL_DOUBLE_INDEXING_TYPES:
case ALL_CONTIGUOUS_INDEXING_TYPES:
case ARRAY_WITH_ARRAY_STORAGE_INDEXING_TYPES:
return true;
default:
return false;
}
}
inline bool hasOptimizableIndexingForClassInfo(const ClassInfo* classInfo)
{
return classInfo->typedArrayStorageType != TypedArrayNone;
}
inline bool hasOptimizableIndexing(Structure* structure)
{
return isOptimizableIndexingType(structure->indexingType())
|| hasOptimizableIndexingForClassInfo(structure->classInfo());
}
inline JITArrayMode jitArrayModeForIndexingType(IndexingType indexingType)
{
switch (indexingType) {
case ALL_INT32_INDEXING_TYPES:
return JITInt32;
case ALL_DOUBLE_INDEXING_TYPES:
return JITDouble;
case ALL_CONTIGUOUS_INDEXING_TYPES:
return JITContiguous;
case ARRAY_WITH_ARRAY_STORAGE_INDEXING_TYPES:
return JITArrayStorage;
default:
CRASH();
return JITContiguous;
}
}
inline JITArrayMode jitArrayModeForClassInfo(const ClassInfo* classInfo)
{
switch (classInfo->typedArrayStorageType) {
case TypedArrayInt8:
return JITInt8Array;
case TypedArrayInt16:
return JITInt16Array;
case TypedArrayInt32:
return JITInt32Array;
case TypedArrayUint8:
return JITUint8Array;
case TypedArrayUint8Clamped:
return JITUint8ClampedArray;
case TypedArrayUint16:
return JITUint16Array;
case TypedArrayUint32:
return JITUint32Array;
case TypedArrayFloat32:
return JITFloat32Array;
case TypedArrayFloat64:
return JITFloat64Array;
default:
CRASH();
return JITContiguous;
}
}
inline JITArrayMode jitArrayModeForStructure(Structure* structure)
{
if (isOptimizableIndexingType(structure->indexingType()))
return jitArrayModeForIndexingType(structure->indexingType());
ASSERT(hasOptimizableIndexingForClassInfo(structure->classInfo()));
return jitArrayModeForClassInfo(structure->classInfo());
}
struct ByValInfo {
ByValInfo() { }
ByValInfo(unsigned bytecodeIndex, CodeLocationJump badTypeJump, JITArrayMode arrayMode, int16_t badTypeJumpToDone, int16_t returnAddressToSlowPath)
: bytecodeIndex(bytecodeIndex)
, badTypeJump(badTypeJump)
, arrayMode(arrayMode)
, badTypeJumpToDone(badTypeJumpToDone)
, returnAddressToSlowPath(returnAddressToSlowPath)
, slowPathCount(0)
{
}
unsigned bytecodeIndex;
CodeLocationJump badTypeJump;
JITArrayMode arrayMode; // The array mode that was baked into the inline JIT code.
int16_t badTypeJumpToDone;
int16_t returnAddressToSlowPath;
unsigned slowPathCount;
RefPtr<JITStubRoutine> stubRoutine;
};
inline unsigned getByValInfoBytecodeIndex(ByValInfo* info)
{
return info->bytecodeIndex;
}
} // namespace JSC
#endif // ENABLE(JIT)
#endif // ByValInfo_h
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