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B3Bank.h
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109 lines (88 loc) · 2.74 KB
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/*
* Copyright (C) 2017-2019 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 "B3Type.h"
#include "Reg.h"
namespace JSC { namespace B3 {
enum Bank : int8_t {
GP,
FP
};
static constexpr unsigned numBanks = 2;
template<typename Func>
void forEachBank(const Func& func)
{
func(GP);
func(FP);
}
inline Bank bankForType(Type type)
{
switch (type.kind()) {
case Void:
case Tuple:
ASSERT_NOT_REACHED();
return GP;
case Int32:
case Int64:
return GP;
case Float:
case Double:
case V128:
return FP;
}
ASSERT_NOT_REACHED();
return GP;
}
inline Bank bankForReg(Reg reg)
{
return reg.isFPR() ? FP : GP;
}
inline Width minimumWidth(Bank bank)
{
return bank == GP ? Width8 : Width32;
}
ALWAYS_INLINE constexpr Width conservativeWidthWithoutVectors(Bank bank)
{
return bank == FP ? Width64 : widthForBytes(sizeof(CPURegister));
}
ALWAYS_INLINE constexpr Width conservativeWidth(Bank bank)
{
return bank == FP ? Width128 : widthForBytes(sizeof(CPURegister));
}
ALWAYS_INLINE constexpr unsigned conservativeRegisterBytes(Bank bank)
{
return bytesForWidth(conservativeWidth(bank));
}
ALWAYS_INLINE constexpr unsigned conservativeRegisterBytesWithoutVectors(Bank bank)
{
return bytesForWidth(conservativeWidthWithoutVectors(bank));
}
} } // namespace JSC::B3
namespace WTF {
class PrintStream;
void printInternal(PrintStream&, JSC::B3::Bank);
} // namespace WTF
#endif // ENABLE(B3_JIT)