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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sts=4 et sw=4 tw=99:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "jit/mips64/Lowering-mips64.h"
#include "jit/mips64/Assembler-mips64.h"
#include "jit/MIR.h"
#include "jit/shared/Lowering-shared-inl.h"
using namespace js;
using namespace js::jit;
void
LIRGeneratorMIPS64::defineInt64Phi(MPhi* phi, size_t lirIndex)
{
defineTypedPhi(phi, lirIndex);
}
void
LIRGeneratorMIPS64::lowerInt64PhiInput(MPhi* phi, uint32_t inputPosition,
LBlock* block, size_t lirIndex)
{
lowerTypedPhiInput(phi, inputPosition, block, lirIndex);
}
LBoxAllocation
LIRGeneratorMIPS64::useBoxFixed(MDefinition* mir, Register reg1, Register reg2, bool useAtStart)
{
MOZ_ASSERT(mir->type() == MIRType::Value);
ensureDefined(mir);
return LBoxAllocation(LUse(reg1, mir->virtualRegister(), useAtStart));
}
void
LIRGeneratorMIPS64::lowerDivI64(MDiv* div)
{
if (div->isUnsigned()) {
lowerUDivI64(div);
return;
}
LDivOrModI64* lir = new(alloc()) LDivOrModI64(useRegister(div->lhs()), useRegister(div->rhs()),
temp());
defineInt64(lir, div);
}
void
LIRGeneratorMIPS64::lowerModI64(MMod* mod)
{
if (mod->isUnsigned()) {
lowerUModI64(mod);
return;
}
LDivOrModI64* lir = new(alloc()) LDivOrModI64(useRegister(mod->lhs()), useRegister(mod->rhs()),
temp());
defineInt64(lir, mod);
}
void
LIRGeneratorMIPS64::lowerUDivI64(MDiv* div)
{
LUDivOrModI64* lir = new(alloc()) LUDivOrModI64(useRegister(div->lhs()),
useRegister(div->rhs()),
temp());
defineInt64(lir, div);
}
void
LIRGeneratorMIPS64::lowerUModI64(MMod* mod)
{
LUDivOrModI64* lir = new(alloc()) LUDivOrModI64(useRegister(mod->lhs()),
useRegister(mod->rhs()),
temp());
defineInt64(lir, mod);
}
void
LIRGeneratorMIPS64::visitBox(MBox* box)
{
MDefinition* opd = box->getOperand(0);
// If the operand is a constant, emit near its uses.
if (opd->isConstant() && box->canEmitAtUses()) {
emitAtUses(box);
return;
}
if (opd->isConstant()) {
define(new(alloc()) LValue(opd->toConstant()->toJSValue()), box, LDefinition(LDefinition::BOX));
} else {
LBox* ins = new(alloc()) LBox(useRegister(opd), opd->type());
define(ins, box, LDefinition(LDefinition::BOX));
}
}
void
LIRGeneratorMIPS64::visitUnbox(MUnbox* unbox)
{
MDefinition* box = unbox->getOperand(0);
if (box->type() == MIRType::ObjectOrNull) {
LUnboxObjectOrNull* lir = new(alloc()) LUnboxObjectOrNull(useRegisterAtStart(box));
if (unbox->fallible())
assignSnapshot(lir, unbox->bailoutKind());
defineReuseInput(lir, unbox, 0);
return;
}
MOZ_ASSERT(box->type() == MIRType::Value);
LUnbox* lir;
if (IsFloatingPointType(unbox->type())) {
lir = new(alloc()) LUnboxFloatingPoint(useRegisterAtStart(box), unbox->type());
} else if (unbox->fallible()) {
// If the unbox is fallible, load the Value in a register first to
// avoid multiple loads.
lir = new(alloc()) LUnbox(useRegisterAtStart(box));
} else {
lir = new(alloc()) LUnbox(useAtStart(box));
}
if (unbox->fallible())
assignSnapshot(lir, unbox->bailoutKind());
define(lir, unbox);
}
void
LIRGeneratorMIPS64::visitReturn(MReturn* ret)
{
MDefinition* opd = ret->getOperand(0);
MOZ_ASSERT(opd->type() == MIRType::Value);
LReturn* ins = new(alloc()) LReturn;
ins->setOperand(0, useFixed(opd, JSReturnReg));
add(ins);
}
void
LIRGeneratorMIPS64::defineUntypedPhi(MPhi* phi, size_t lirIndex)
{
defineTypedPhi(phi, lirIndex);
}
void
LIRGeneratorMIPS64::lowerUntypedPhiInput(MPhi* phi, uint32_t inputPosition,
LBlock* block, size_t lirIndex)
{
lowerTypedPhiInput(phi, inputPosition, block, lirIndex);
}
void
LIRGeneratorMIPS64::lowerTruncateDToInt32(MTruncateToInt32* ins)
{
MDefinition* opd = ins->input();
MOZ_ASSERT(opd->type() == MIRType::Double);
define(new(alloc())
LTruncateDToInt32(useRegister(opd), tempDouble()), ins);
}
void
LIRGeneratorMIPS64::lowerTruncateFToInt32(MTruncateToInt32* ins)
{
MDefinition* opd = ins->input();
MOZ_ASSERT(opd->type() == MIRType::Float32);
define(new(alloc())
LTruncateFToInt32(useRegister(opd), tempFloat32()), ins);
}
void
LIRGeneratorMIPS64::visitRandom(MRandom* ins)
{
LRandom *lir = new(alloc()) LRandom(temp(), temp(), temp());
defineFixed(lir, ins, LFloatReg(ReturnDoubleReg));
}
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