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/*
* Copyright (C) 2017 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.
*/
#pragma once
#if ENABLE(B3_JIT)
#include "B3Bank.h"
#include "B3Type.h"
#if COMPILER(GCC) && ASSERT_DISABLED
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wreturn-type"
#endif // COMPILER(GCC) && ASSERT_DISABLED
namespace JSC { namespace B3 {
enum Width : int8_t {
Width8,
Width16,
Width32,
Width64
};
inline Width pointerWidth()
{
if (sizeof(void*) == 8)
return Width64;
return Width32;
}
// Don't use this unless the compiler forces you to.
#if CPU(X86_64) || CPU(ARM64)
#define POINTER_WIDTH Width64
#else
#define POINTER_WIDTH Width32
#endif
inline Width widthForType(Type type)
{
switch (type) {
case Void:
ASSERT_NOT_REACHED();
return Width8;
case Int32:
case Float:
return Width32;
case Int64:
case Double:
return Width64;
}
ASSERT_NOT_REACHED();
return Width8;
}
inline Width canonicalWidth(Width width)
{
return std::max(Width32, width);
}
inline bool isCanonicalWidth(Width width)
{
return width >= Width32;
}
Type bestType(Bank bank, Width width);
inline Width conservativeWidth(Bank bank)
{
return bank == GP ? pointerWidth() : Width64;
}
inline Width minimumWidth(Bank bank)
{
return bank == GP ? Width8 : Width32;
}
inline unsigned bytes(Width width)
{
return 1 << width;
}
inline Width widthForBytes(unsigned bytes)
{
switch (bytes) {
case 0:
case 1:
return Width8;
case 2:
return Width16;
case 3:
case 4:
return Width32;
default:
return Width64;
}
}
inline uint64_t mask(Width width)
{
switch (width) {
case Width8:
return 0x00000000000000ffllu;
case Width16:
return 0x000000000000ffffllu;
case Width32:
return 0x00000000ffffffffllu;
case Width64:
return 0xffffffffffffffffllu;
}
ASSERT_NOT_REACHED();
}
} } // namespace JSC::B3
namespace WTF {
class PrintStream;
void printInternal(PrintStream&, JSC::B3::Width);
} // namespace WTF
#if COMPILER(GCC) && ASSERT_DISABLED
#pragma GCC diagnostic pop
#endif // COMPILER(GCC) && ASSERT_DISABLED
#endif // ENABLE(B3_JIT)
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