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diff --git a/js/src/jit/x86-shared/LIR-x86-shared.h b/js/src/jit/x86-shared/LIR-x86-shared.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * 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_x86_shared_LIR_x86_shared_h
+#define jit_x86_shared_LIR_x86_shared_h
+
+namespace js {
+namespace jit {
+
+class LDivI : public LBinaryMath<1> {
+ public:
+ LIR_HEADER(DivI)
+
+ LDivI(const LAllocation& lhs, const LAllocation& rhs, const LDefinition& temp)
+ : LBinaryMath(classOpcode) {
+ setOperand(0, lhs);
+ setOperand(1, rhs);
+ setTemp(0, temp);
+ }
+
+ const char* extraName() const {
+ if (mir()->isTruncated()) {
+ if (mir()->canBeNegativeZero()) {
+ return mir()->canBeNegativeOverflow()
+ ? "Truncate_NegativeZero_NegativeOverflow"
+ : "Truncate_NegativeZero";
+ }
+ return mir()->canBeNegativeOverflow() ? "Truncate_NegativeOverflow"
+ : "Truncate";
+ }
+ if (mir()->canBeNegativeZero()) {
+ return mir()->canBeNegativeOverflow() ? "NegativeZero_NegativeOverflow"
+ : "NegativeZero";
+ }
+ return mir()->canBeNegativeOverflow() ? "NegativeOverflow" : nullptr;
+ }
+
+ const LDefinition* remainder() { return getTemp(0); }
+ MDiv* mir() const { return mir_->toDiv(); }
+};
+
+// Signed division by a power-of-two constant.
+class LDivPowTwoI : public LBinaryMath<0> {
+ const int32_t shift_;
+ const bool negativeDivisor_;
+
+ public:
+ LIR_HEADER(DivPowTwoI)
+
+ LDivPowTwoI(const LAllocation& lhs, const LAllocation& lhsCopy, int32_t shift,
+ bool negativeDivisor)
+ : LBinaryMath(classOpcode),
+ shift_(shift),
+ negativeDivisor_(negativeDivisor) {
+ setOperand(0, lhs);
+ setOperand(1, lhsCopy);
+ }
+
+ const LAllocation* numerator() { return getOperand(0); }
+ const LAllocation* numeratorCopy() { return getOperand(1); }
+ int32_t shift() const { return shift_; }
+ bool negativeDivisor() const { return negativeDivisor_; }
+ MDiv* mir() const { return mir_->toDiv(); }
+};
+
+class LDivOrModConstantI : public LInstructionHelper<1, 1, 1> {
+ const int32_t denominator_;
+
+ public:
+ LIR_HEADER(DivOrModConstantI)
+
+ LDivOrModConstantI(const LAllocation& lhs, int32_t denominator,
+ const LDefinition& temp)
+ : LInstructionHelper(classOpcode), denominator_(denominator) {
+ setOperand(0, lhs);
+ setTemp(0, temp);
+ }
+
+ const LAllocation* numerator() { return getOperand(0); }
+ int32_t denominator() const { return denominator_; }
+ MBinaryArithInstruction* mir() const {
+ MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
+ return static_cast<MBinaryArithInstruction*>(mir_);
+ }
+ bool canBeNegativeDividend() const {
+ if (mir_->isMod()) {
+ return mir_->toMod()->canBeNegativeDividend();
+ }
+ return mir_->toDiv()->canBeNegativeDividend();
+ }
+};
+
+class LModI : public LBinaryMath<1> {
+ public:
+ LIR_HEADER(ModI)
+
+ LModI(const LAllocation& lhs, const LAllocation& rhs, const LDefinition& temp)
+ : LBinaryMath(classOpcode) {
+ setOperand(0, lhs);
+ setOperand(1, rhs);
+ setTemp(0, temp);
+ }
+
+ const char* extraName() const {
+ return mir()->isTruncated() ? "Truncated" : nullptr;
+ }
+
+ const LDefinition* remainder() { return getDef(0); }
+ MMod* mir() const { return mir_->toMod(); }
+};
+
+// This class performs a simple x86 'div', yielding either a quotient or
+// remainder depending on whether this instruction is defined to output eax
+// (quotient) or edx (remainder).
+class LUDivOrMod : public LBinaryMath<1> {
+ public:
+ LIR_HEADER(UDivOrMod);
+
+ LUDivOrMod(const LAllocation& lhs, const LAllocation& rhs,
+ const LDefinition& temp)
+ : LBinaryMath(classOpcode) {
+ 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();
+ }
+
+ bool trapOnError() const {
+ if (mir_->isMod()) {
+ return mir_->toMod()->trapOnError();
+ }
+ return mir_->toDiv()->trapOnError();
+ }
+
+ wasm::BytecodeOffset bytecodeOffset() const {
+ if (mir_->isMod()) {
+ return mir_->toMod()->bytecodeOffset();
+ }
+ return mir_->toDiv()->bytecodeOffset();
+ }
+};
+
+class LUDivOrModConstant : public LInstructionHelper<1, 1, 1> {
+ const uint32_t denominator_;
+
+ public:
+ LIR_HEADER(UDivOrModConstant)
+
+ LUDivOrModConstant(const LAllocation& lhs, uint32_t denominator,
+ const LDefinition& temp)
+ : LInstructionHelper(classOpcode), denominator_(denominator) {
+ setOperand(0, lhs);
+ setTemp(0, temp);
+ }
+
+ const LAllocation* numerator() { return getOperand(0); }
+ uint32_t denominator() const { return denominator_; }
+ MBinaryArithInstruction* mir() const {
+ MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
+ return static_cast<MBinaryArithInstruction*>(mir_);
+ }
+ bool canBeNegativeDividend() const {
+ if (mir_->isMod()) {
+ return mir_->toMod()->canBeNegativeDividend();
+ }
+ return mir_->toDiv()->canBeNegativeDividend();
+ }
+ bool trapOnError() const {
+ if (mir_->isMod()) {
+ return mir_->toMod()->trapOnError();
+ }
+ return mir_->toDiv()->trapOnError();
+ }
+ wasm::BytecodeOffset bytecodeOffset() const {
+ if (mir_->isMod()) {
+ return mir_->toMod()->bytecodeOffset();
+ }
+ return mir_->toDiv()->bytecodeOffset();
+ }
+};
+
+class LModPowTwoI : public LInstructionHelper<1, 1, 0> {
+ const int32_t shift_;
+
+ public:
+ LIR_HEADER(ModPowTwoI)
+
+ LModPowTwoI(const LAllocation& lhs, int32_t shift)
+ : LInstructionHelper(classOpcode), shift_(shift) {
+ setOperand(0, lhs);
+ }
+
+ int32_t shift() const { return shift_; }
+ const LDefinition* remainder() { return getDef(0); }
+ MMod* mir() const { return mir_->toMod(); }
+};
+
+// Takes a tableswitch with an integer to decide
+class LTableSwitch : public LInstructionHelper<0, 1, 2> {
+ public:
+ LIR_HEADER(TableSwitch)
+
+ LTableSwitch(const LAllocation& in, const LDefinition& inputCopy,
+ const LDefinition& jumpTablePointer, MTableSwitch* ins)
+ : LInstructionHelper(classOpcode) {
+ setOperand(0, in);
+ setTemp(0, inputCopy);
+ setTemp(1, jumpTablePointer);
+ setMir(ins);
+ }
+
+ MTableSwitch* mir() const { return mir_->toTableSwitch(); }
+
+ const LAllocation* index() { return getOperand(0); }
+ const LDefinition* tempInt() { return getTemp(0); }
+ const LDefinition* tempPointer() { return getTemp(1); }
+};
+
+// Takes a tableswitch with a value to decide
+class LTableSwitchV : public LInstructionHelper<0, BOX_PIECES, 3> {
+ public:
+ LIR_HEADER(TableSwitchV)
+
+ LTableSwitchV(const LBoxAllocation& input, const LDefinition& inputCopy,
+ const LDefinition& floatCopy,
+ const LDefinition& jumpTablePointer, MTableSwitch* ins)
+ : LInstructionHelper(classOpcode) {
+ setBoxOperand(InputValue, input);
+ setTemp(0, inputCopy);
+ setTemp(1, floatCopy);
+ setTemp(2, jumpTablePointer);
+ setMir(ins);
+ }
+
+ MTableSwitch* mir() const { return mir_->toTableSwitch(); }
+
+ static const size_t InputValue = 0;
+
+ const LDefinition* tempInt() { return getTemp(0); }
+ const LDefinition* tempFloat() { return getTemp(1); }
+ const LDefinition* tempPointer() { return getTemp(2); }
+};
+
+class LMulI : public LBinaryMath<0, 1> {
+ public:
+ LIR_HEADER(MulI)
+
+ LMulI(const LAllocation& lhs, const LAllocation& rhs,
+ const LAllocation& lhsCopy)
+ : LBinaryMath(classOpcode) {
+ setOperand(0, lhs);
+ setOperand(1, rhs);
+ setOperand(2, lhsCopy);
+ }
+
+ const char* extraName() const {
+ return (mir()->mode() == MMul::Integer)
+ ? "Integer"
+ : (mir()->canBeNegativeZero() ? "CanBeNegativeZero" : nullptr);
+ }
+
+ MMul* mir() const { return mir_->toMul(); }
+ const LAllocation* lhsCopy() { return this->getOperand(2); }
+};
+
+class LInt64ToFloatingPoint : public LInstructionHelper<1, INT64_PIECES, 1> {
+ public:
+ LIR_HEADER(Int64ToFloatingPoint);
+
+ LInt64ToFloatingPoint(const LInt64Allocation& in, const LDefinition& temp)
+ : LInstructionHelper(classOpcode) {
+ setInt64Operand(0, in);
+ setTemp(0, temp);
+ }
+
+ MInt64ToFloatingPoint* mir() const { return mir_->toInt64ToFloatingPoint(); }
+
+ const LDefinition* temp() { return getTemp(0); }
+};
+
+} // namespace jit
+} // namespace js
+
+#endif /* jit_x86_shared_LIR_x86_shared_h */
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