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/*
* Copyright (C) 2016-2017 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 "AirArg.h"
namespace JSC { namespace B3 { namespace Air {
template<typename T> struct ArgThingHelper;
template<> struct ArgThingHelper<Tmp> {
static bool is(const Arg& arg)
{
return arg.isTmp();
}
static Tmp as(const Arg& arg)
{
if (is(arg))
return arg.tmp();
return Tmp();
}
template<typename Functor>
static void forEachFast(Arg& arg, const Functor& functor)
{
arg.forEachTmpFast(functor);
}
template<typename Functor>
static void forEach(Arg& arg, Arg::Role role, Bank bank, Width width, const Functor& functor)
{
arg.forEachTmp(role, bank, width, functor);
}
};
template<> struct ArgThingHelper<Arg> {
static bool is(const Arg&)
{
return true;
}
static Arg as(const Arg& arg)
{
return arg;
}
template<typename Functor>
static void forEachFast(Arg& arg, const Functor& functor)
{
functor(arg);
}
template<typename Functor>
static void forEach(Arg& arg, Arg::Role role, Bank bank, Width width, const Functor& functor)
{
functor(arg, role, bank, width);
}
};
template<> struct ArgThingHelper<StackSlot*> {
static bool is(const Arg& arg)
{
return arg.isStack();
}
static StackSlot* as(const Arg& arg)
{
return arg.stackSlot();
}
template<typename Functor>
static void forEachFast(Arg& arg, const Functor& functor)
{
if (!arg.isStack())
return;
StackSlot* stackSlot = arg.stackSlot();
functor(stackSlot);
arg = Arg::stack(stackSlot, arg.offset());
}
template<typename Functor>
static void forEach(Arg& arg, Arg::Role role, Bank bank, Width width, const Functor& functor)
{
if (!arg.isStack())
return;
StackSlot* stackSlot = arg.stackSlot();
// FIXME: This is way too optimistic about the meaning of "Def". It gets lucky for
// now because our only use of "Anonymous" stack slots happens to want the optimistic
// semantics. We could fix this by just changing the comments that describe the
// semantics of "Anonymous".
// https://bugs.webkit.org/show_bug.cgi?id=151128
functor(stackSlot, role, bank, width);
arg = Arg::stack(stackSlot, arg.offset());
}
};
template<> struct ArgThingHelper<Reg> {
static bool is(const Arg& arg)
{
return arg.isReg();
}
static Reg as(const Arg& arg)
{
return arg.reg();
}
template<typename Functor>
static void forEachFast(Arg& arg, const Functor& functor)
{
arg.forEachTmpFast(
[&] (Tmp& tmp) {
if (!tmp.isReg())
return;
Reg reg = tmp.reg();
functor(reg);
tmp = Tmp(reg);
});
}
template<typename Functor>
static void forEach(Arg& arg, Arg::Role argRole, Bank argBank, Width argWidth, const Functor& functor)
{
arg.forEachTmp(
argRole, argBank, argWidth,
[&] (Tmp& tmp, Arg::Role role, Bank bank, Width width) {
if (!tmp.isReg())
return;
Reg reg = tmp.reg();
functor(reg, role, bank, width);
tmp = Tmp(reg);
});
}
};
template<typename Thing>
bool Arg::is() const
{
return ArgThingHelper<Thing>::is(*this);
}
template<typename Thing>
Thing Arg::as() const
{
return ArgThingHelper<Thing>::as(*this);
}
template<typename Thing, typename Functor>
void Arg::forEachFast(const Functor& functor)
{
ArgThingHelper<Thing>::forEachFast(*this, functor);
}
template<typename Thing, typename Functor>
void Arg::forEach(Role role, Bank bank, Width width, const Functor& functor)
{
ArgThingHelper<Thing>::forEach(*this, role, bank, width, functor);
}
} } } // namespace JSC::B3::Air
#endif // ENABLE(B3_JIT)
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