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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* 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/. */
#ifndef jit_x64_LIR_x64_h
#define jit_x64_LIR_x64_h
namespace js {
namespace jit {
// Given an untyped input, guards on whether it's a specific type and returns
// the unboxed payload.
class LUnboxBase : public LInstructionHelper<1, 1, 0>
{
public:
explicit LUnboxBase(const LAllocation& input) {
setOperand(0, input);
}
static const size_t Input = 0;
MUnbox* mir() const {
return mir_->toUnbox();
}
};
class LUnbox : public LUnboxBase {
public:
LIR_HEADER(Unbox)
explicit LUnbox(const LAllocation& input)
: LUnboxBase(input)
{ }
const char* extraName() const {
return StringFromMIRType(mir()->type());
}
};
class LUnboxFloatingPoint : public LUnboxBase {
MIRType type_;
public:
LIR_HEADER(UnboxFloatingPoint)
LUnboxFloatingPoint(const LAllocation& input, MIRType type)
: LUnboxBase(input),
type_(type)
{ }
MIRType type() const {
return type_;
}
const char* extraName() const {
return StringFromMIRType(type_);
}
};
// Convert a 32-bit unsigned integer to a double.
class LWasmUint32ToDouble : public LInstructionHelper<1, 1, 0>
{
public:
LIR_HEADER(WasmUint32ToDouble)
explicit LWasmUint32ToDouble(const LAllocation& input) {
setOperand(0, input);
}
};
// Convert a 32-bit unsigned integer to a float32.
class LWasmUint32ToFloat32 : public LInstructionHelper<1, 1, 0>
{
public:
LIR_HEADER(WasmUint32ToFloat32)
explicit LWasmUint32ToFloat32(const LAllocation& input) {
setOperand(0, input);
}
};
class LDivOrModI64 : public LBinaryMath<1>
{
public:
LIR_HEADER(DivOrModI64)
LDivOrModI64(const LAllocation& lhs, const LAllocation& rhs, const LDefinition& temp) {
setOperand(0, lhs);
setOperand(1, rhs);
setTemp(0, temp);
}
const LDefinition* remainder() {
return getTemp(0);
}
MBinaryArithInstruction* mir() const {
MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
return static_cast<MBinaryArithInstruction*>(mir_);
}
bool canBeDivideByZero() const {
if (mir_->isMod())
return mir_->toMod()->canBeDivideByZero();
return mir_->toDiv()->canBeDivideByZero();
}
bool canBeNegativeOverflow() const {
if (mir_->isMod())
return mir_->toMod()->canBeNegativeDividend();
return mir_->toDiv()->canBeNegativeOverflow();
}
wasm::TrapOffset trapOffset() const {
MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
if (mir_->isMod())
return mir_->toMod()->trapOffset();
return mir_->toDiv()->trapOffset();
}
};
// This class performs a simple x86 'div', yielding either a quotient or
// remainder depending on whether this instruction is defined to output
// rax (quotient) or rdx (remainder).
class LUDivOrModI64 : public LBinaryMath<1>
{
public:
LIR_HEADER(UDivOrModI64);
LUDivOrModI64(const LAllocation& lhs, const LAllocation& rhs, const LDefinition& temp) {
setOperand(0, lhs);
setOperand(1, rhs);
setTemp(0, temp);
}
const LDefinition* remainder() {
return getTemp(0);
}
const char* extraName() const {
return mir()->isTruncated() ? "Truncated" : nullptr;
}
MBinaryArithInstruction* mir() const {
MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
return static_cast<MBinaryArithInstruction*>(mir_);
}
bool canBeDivideByZero() const {
if (mir_->isMod())
return mir_->toMod()->canBeDivideByZero();
return mir_->toDiv()->canBeDivideByZero();
}
wasm::TrapOffset trapOffset() const {
MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
if (mir_->isMod())
return mir_->toMod()->trapOffset();
return mir_->toDiv()->trapOffset();
}
};
class LWasmTruncateToInt64 : public LInstructionHelper<1, 1, 1>
{
public:
LIR_HEADER(WasmTruncateToInt64);
LWasmTruncateToInt64(const LAllocation& in, const LDefinition& temp) {
setOperand(0, in);
setTemp(0, temp);
}
MWasmTruncateToInt64* mir() const {
return mir_->toWasmTruncateToInt64();
}
const LDefinition* temp() {
return getTemp(0);
}
};
} // namespace jit
} // namespace js
#endif /* jit_x64_LIR_x64_h */
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