| /* -*- 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/. */ |
| |
| #ifndef jit_shared_LIR_x86_shared_h |
| #define jit_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) { |
| 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" : NULL; |
| } |
| |
| 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_; |
| |
| public: |
| LIR_HEADER(DivPowTwoI) |
| |
| LDivPowTwoI(const LAllocation &lhs, const LAllocation &lhsCopy, int32_t shift) |
| : shift_(shift) |
| { |
| setOperand(0, lhs); |
| setOperand(1, lhsCopy); |
| } |
| |
| const LAllocation *numerator() { |
| return getOperand(0); |
| } |
| const LAllocation *numeratorCopy() { |
| return getOperand(1); |
| } |
| int32_t shift() const { |
| return shift_; |
| } |
| MDiv *mir() const { |
| return mir_->toDiv(); |
| } |
| }; |
| |
| class LModI : public LBinaryMath<1> |
| { |
| public: |
| LIR_HEADER(ModI) |
| |
| LModI(const LAllocation &lhs, const LAllocation &rhs, const LDefinition &temp) { |
| setOperand(0, lhs); |
| setOperand(1, rhs); |
| setTemp(0, temp); |
| } |
| |
| const char *extraName() const { |
| return mir()->isTruncated() ? "Truncated" : NULL; |
| } |
| |
| 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 LAsmJSDivOrMod : public LBinaryMath<1> |
| { |
| public: |
| LIR_HEADER(AsmJSDivOrMod); |
| |
| LAsmJSDivOrMod(const LAllocation &lhs, const LAllocation &rhs, const LDefinition &temp) { |
| setOperand(0, lhs); |
| setOperand(1, rhs); |
| setTemp(0, temp); |
| } |
| |
| const LDefinition *remainder() { |
| return getTemp(0); |
| } |
| }; |
| |
| class LModPowTwoI : public LInstructionHelper<1,1,0> |
| { |
| const int32_t shift_; |
| |
| public: |
| LIR_HEADER(ModPowTwoI) |
| |
| LModPowTwoI(const LAllocation &lhs, int32_t shift) |
| : shift_(shift) |
| { |
| setOperand(0, lhs); |
| } |
| |
| int32_t shift() const { |
| return shift_; |
| } |
| const LDefinition *remainder() { |
| return getDef(0); |
| } |
| MMod *mir() const { |
| return mir_->toMod(); |
| } |
| }; |
| |
| // Double raised to a half power. |
| class LPowHalfD : public LInstructionHelper<1, 1, 1> |
| { |
| public: |
| LIR_HEADER(PowHalfD) |
| LPowHalfD(const LAllocation &input, const LDefinition &temp) { |
| setOperand(0, input); |
| setTemp(0, temp); |
| } |
| |
| const LAllocation *input() { |
| return getOperand(0); |
| } |
| const LDefinition *temp() { |
| return getTemp(0); |
| } |
| const LDefinition *output() { |
| return getDef(0); |
| } |
| }; |
| |
| // 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) |
| { |
| setOperand(0, in); |
| setTemp(0, inputCopy); |
| setTemp(1, jumpTablePointer); |
| setMir(ins); |
| } |
| |
| MTableSwitch *mir() const { |
| return mir_->toTableSwitch(); |
| } |
| |
| const LAllocation *index() { |
| return getOperand(0); |
| } |
| const LAllocation *tempInt() { |
| return getTemp(0)->output(); |
| } |
| const LAllocation *tempPointer() { |
| return getTemp(1)->output(); |
| } |
| }; |
| |
| // Takes a tableswitch with a value to decide |
| class LTableSwitchV : public LInstructionHelper<0, BOX_PIECES, 3> |
| { |
| public: |
| LIR_HEADER(TableSwitchV) |
| |
| LTableSwitchV(const LDefinition &inputCopy, const LDefinition &floatCopy, |
| const LDefinition &jumpTablePointer, MTableSwitch *ins) |
| { |
| setTemp(0, inputCopy); |
| setTemp(1, floatCopy); |
| setTemp(2, jumpTablePointer); |
| setMir(ins); |
| } |
| |
| MTableSwitch *mir() const { |
| return mir_->toTableSwitch(); |
| } |
| |
| static const size_t InputValue = 0; |
| |
| const LAllocation *tempInt() { |
| return getTemp(0)->output(); |
| } |
| const LAllocation *tempFloat() { |
| return getTemp(1)->output(); |
| } |
| const LAllocation *tempPointer() { |
| return getTemp(2)->output(); |
| } |
| }; |
| |
| class LGuardShape : public LInstructionHelper<0, 1, 0> |
| { |
| public: |
| LIR_HEADER(GuardShape) |
| |
| LGuardShape(const LAllocation &in) { |
| setOperand(0, in); |
| } |
| const MGuardShape *mir() const { |
| return mir_->toGuardShape(); |
| } |
| }; |
| |
| class LGuardObjectType : public LInstructionHelper<0, 1, 0> |
| { |
| public: |
| LIR_HEADER(GuardObjectType) |
| |
| LGuardObjectType(const LAllocation &in) { |
| setOperand(0, in); |
| } |
| const MGuardObjectType *mir() const { |
| return mir_->toGuardObjectType(); |
| } |
| }; |
| |
| class LInterruptCheck : public LInstructionHelper<0, 0, 0> |
| { |
| public: |
| LIR_HEADER(InterruptCheck) |
| }; |
| |
| class LMulI : public LBinaryMath<0, 1> |
| { |
| public: |
| LIR_HEADER(MulI) |
| |
| LMulI(const LAllocation &lhs, const LAllocation &rhs, const LAllocation &lhsCopy) { |
| setOperand(0, lhs); |
| setOperand(1, rhs); |
| setOperand(2, lhsCopy); |
| } |
| |
| const char *extraName() const { |
| return (mir()->mode() == MMul::Integer) |
| ? "Integer" |
| : (mir()->canBeNegativeZero() ? "CanBeNegativeZero" : NULL); |
| } |
| |
| MMul *mir() const { |
| return mir_->toMul(); |
| } |
| const LAllocation *lhsCopy() { |
| return this->getOperand(2); |
| } |
| }; |
| |
| } // namespace jit |
| } // namespace js |
| |
| #endif /* jit_shared_LIR_x86_shared_h */ |