The Tor Browser: comparison js/src/jit/shared/LIR-x86-shared.h

--1:000000000000
+:36f6cb5211e1
+/* -*- 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" : 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)
+: 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)
+: denominator_(denominator)
+{
+setOperand(0, lhs);
+setTemp(0, temp);
+}
+const LAllocation *numerator() {
+return getOperand(0);
+}
+int32_t denominator() const {
+return denominator_;
+}
+MBinaryArithInstruction *mir() const {
+JS_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) {
+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) {
+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 {
+JS_ASSERT(mir_->isDiv() || mir_->isMod());
+return static_cast<MBinaryArithInstruction *>(mir_);
+}
+bool canBeDivideByZero() const {
+if (mir_->isMod())
+return mir_->toMod()->canBeDivideByZero();
+return mir_->toDiv()->canBeDivideByZero();
+}
+};
+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, 0>
+{
+public:
+LIR_HEADER(PowHalfD)
+LPowHalfD(const LAllocation &input) {
+setOperand(0, input);
+}
+const LAllocation *input() {
+return getOperand(0);
+}
+const LDefinition *output() {
+return getDef(0);
+}
+MPowHalf *mir() const {
+return mir_->toPowHalf();
+}
+};
+// 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 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 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 LDefinition *tempInt() {
+return getTemp(0);
+}
+const LDefinition *tempFloat() {
+return getTemp(1);
+}
+const LDefinition *tempPointer() {
+return getTemp(2);
+}
+};
+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" : nullptr);
+}
+MMul *mir() const {
+return mir_->toMul();
+}
+const LAllocation *lhsCopy() {
+return this->getOperand(2);
+}
+};
+} // namespace jit
+} // namespace js
+#endif /* jit_shared_LIR_x86_shared_h */

The Tor Browser / file comparison

comparison: js/src/jit/shared/LIR-x86-shared.h

js/src/jit/shared/LIR-x86-shared.h