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/*
* Copyright (C) 2015 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 "AirArg.h"
#include "AirTmp.h"
namespace JSC { namespace B3 { namespace Air {
inline Tmp::Tmp(const Arg& arg)
{
*this = arg.tmp();
}
// When a Hash structure is too slow or when Sets contains most values, you can
// use direct array addressing with Tmps.
template<Arg::Type type>
struct AbsoluteTmpMapper;
template<>
struct AbsoluteTmpMapper<Arg::GP> {
static unsigned absoluteIndex(const Tmp& tmp)
{
ASSERT(tmp.isGP());
ASSERT(static_cast<int>(tmp.internalValue()) > 0);
return tmp.internalValue();
}
static unsigned absoluteIndex(unsigned tmpIndex)
{
return absoluteIndex(Tmp::gpTmpForIndex(tmpIndex));
}
static unsigned lastMachineRegisterIndex()
{
return absoluteIndex(Tmp(MacroAssembler::lastRegister()));
}
static Tmp tmpFromAbsoluteIndex(unsigned tmpIndex)
{
return Tmp::tmpForInternalValue(tmpIndex);
}
};
template<>
struct AbsoluteTmpMapper<Arg::FP> {
static unsigned absoluteIndex(const Tmp& tmp)
{
ASSERT(tmp.isFP());
ASSERT(static_cast<int>(tmp.internalValue()) < 0);
return -tmp.internalValue();
}
static unsigned absoluteIndex(unsigned tmpIndex)
{
return absoluteIndex(Tmp::fpTmpForIndex(tmpIndex));
}
static unsigned lastMachineRegisterIndex()
{
return absoluteIndex(Tmp(MacroAssembler::lastFPRegister()));
}
static Tmp tmpFromAbsoluteIndex(unsigned tmpIndex)
{
return Tmp::tmpForInternalValue(-tmpIndex);
}
};
} } } // namespace JSC::B3::Air
#endif // ENABLE(B3_JIT)
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