diff options
Diffstat (limited to 'backend/lib/Target/RISCV/GISel')
| -rw-r--r-- | backend/lib/Target/RISCV/GISel/RISCVInstructionSelector.cpp | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/backend/lib/Target/RISCV/GISel/RISCVInstructionSelector.cpp b/backend/lib/Target/RISCV/GISel/RISCVInstructionSelector.cpp index c13ac11..d9e3fce 100644 --- a/backend/lib/Target/RISCV/GISel/RISCVInstructionSelector.cpp +++ b/backend/lib/Target/RISCV/GISel/RISCVInstructionSelector.cpp @@ -459,10 +459,6 @@ public: return selectSignExtendInRegister(Instruction, Function, Target, Type); case GenericOpcode::G_FCMP: return selectFloatingCompare(Instruction, Function, Target); - case GenericOpcode::G_SMULH: - return selectMultiplyHigh(Instruction, Function, Target, Type, true); - case GenericOpcode::G_UMULH: - return selectMultiplyHigh(Instruction, Function, Target, Type, false); case GenericOpcode::G_SMIN: case GenericOpcode::G_SMAX: case GenericOpcode::G_UMIN: @@ -816,103 +812,6 @@ private: FalseValue, *MaskedDifference); } - [[nodiscard]] Expected<void> selectMultiplyHigh(MachineInstr &Instruction, - MachineFunction &Function, - const TargetDescription &Target, - std::optional<LowLevelType> Type, - bool Signed) const { - if (!Type) - return makeUnexpected(ErrorCode::VerificationError, - "RISC-V high multiplication has no result type"); - if (Type->scalarBitWidth() == 64) { - return Instruction.setOpcode( - instructionOpcode(Signed ? InstructionOpcode::MULH : InstructionOpcode::MULHU)); - } - - const MachineOperand *DestinationOperand = Instruction.operandAt(0); - const MachineOperand *LeftOperand = Instruction.operandAt(1); - const MachineOperand *RightOperand = Instruction.operandAt(2); - const Register *Destination = - DestinationOperand == nullptr ? nullptr : DestinationOperand->getIf<Register>(); - const Register *Left = LeftOperand == nullptr ? nullptr : LeftOperand->getIf<Register>(); - const Register *Right = RightOperand == nullptr ? nullptr : RightOperand->getIf<Register>(); - if (Destination == nullptr || Left == nullptr || Right == nullptr) - return makeUnexpected(ErrorCode::VerificationError, - "RISC-V high multiplication has invalid register operands"); - const Register DestinationRegister = *Destination; - const Register RightRegister = *Right; - auto I64 = LowLevelType::makeCategoryNeutralScalar(64); - if (!I64) - return std::unexpected(I64.error()); - auto ExtendedLeft = createTemporary(Function, *I64, Target); - auto ExtendedRight = createTemporary(Function, *I64, Target); - auto Product = createTemporary(Function, *I64, Target); - if (!ExtendedLeft || !ExtendedRight || !Product) { - return std::unexpected(!ExtendedLeft - ? ExtendedLeft.error() - : (!ExtendedRight ? ExtendedRight.error() : Product.error())); - } - - auto RemoveRight = Instruction.eraseOperand(2); - if (!RemoveRight) - return std::unexpected(RemoveRight.error()); - MachineIRBuilder Builder(Function, Target); - MachineInstr *Anchor = &Instruction; - if (Signed) { - auto SetDestination = Instruction.operandAt(0)->setRegister(*ExtendedLeft); - if (!SetDestination) - return std::unexpected(SetDestination.error()); - auto Immediate = appendImmediate(Instruction, 0); - if (!Immediate) - return std::unexpected(Immediate.error()); - auto SetOpcode = Instruction.setOpcode(instructionOpcode(InstructionOpcode::ADDIW)); - if (!SetOpcode) - return std::unexpected(SetOpcode.error()); - auto ExtendRight = buildImmediateAfter(Builder, *Anchor, InstructionOpcode::ADDIW, - *ExtendedRight, RightRegister, 0); - if (!ExtendRight) - return std::unexpected(ExtendRight.error()); - Anchor = *ExtendRight; - } else { - auto ShiftedLeft = createTemporary(Function, *I64, Target); - auto ShiftedRight = createTemporary(Function, *I64, Target); - if (!ShiftedLeft || !ShiftedRight) - return std::unexpected(!ShiftedLeft ? ShiftedLeft.error() : ShiftedRight.error()); - auto SetDestination = Instruction.operandAt(0)->setRegister(*ShiftedLeft); - if (!SetDestination) - return std::unexpected(SetDestination.error()); - auto Immediate = appendImmediate(Instruction, 32); - if (!Immediate) - return std::unexpected(Immediate.error()); - auto SetOpcode = Instruction.setOpcode(instructionOpcode(InstructionOpcode::SLLI)); - if (!SetOpcode) - return std::unexpected(SetOpcode.error()); - auto ExtendLeft = buildImmediateAfter(Builder, *Anchor, InstructionOpcode::SRLI, - *ExtendedLeft, *ShiftedLeft, 32); - if (!ExtendLeft) - return std::unexpected(ExtendLeft.error()); - auto ShiftRight = buildImmediateAfter(Builder, **ExtendLeft, InstructionOpcode::SLLI, - *ShiftedRight, RightRegister, 32); - if (!ShiftRight) - return std::unexpected(ShiftRight.error()); - auto ExtendRight = buildImmediateAfter(Builder, **ShiftRight, InstructionOpcode::SRLI, - *ExtendedRight, *ShiftedRight, 32); - if (!ExtendRight) - return std::unexpected(ExtendRight.error()); - Anchor = *ExtendRight; - } - auto Multiply = buildBinaryAfter(Builder, *Anchor, InstructionOpcode::MUL, *Product, - *ExtendedLeft, *ExtendedRight); - if (!Multiply) - return std::unexpected(Multiply.error()); - auto Extract = buildImmediateAfter(Builder, **Multiply, - Signed ? InstructionOpcode::SRAI : InstructionOpcode::SRLI, - DestinationRegister, *Product, 32); - if (!Extract) - return std::unexpected(Extract.error()); - return {}; - } - [[nodiscard]] Expected<void> selectIntegerMinMax(MachineInstr &Instruction, MachineFunction &Function, const TargetDescription &Target, |