diff options
Diffstat (limited to 'llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp')
| -rw-r--r-- | llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp b/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp index 021353a..3fea21e 100644 --- a/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp +++ b/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp @@ -222,6 +222,9 @@ private: bool selectWaveReduceMax(Register ResVReg, const SPIRVType *ResType, MachineInstr &I, bool IsUnsigned) const; + bool selectWaveReduceMin(Register ResVReg, const SPIRVType *ResType, + MachineInstr &I, bool IsUnsigned) const; + bool selectWaveReduceSum(Register ResVReg, const SPIRVType *ResType, MachineInstr &I) const; @@ -2456,6 +2459,35 @@ bool SPIRVInstructionSelector::selectWaveReduceMax(Register ResVReg, .constrainAllUses(TII, TRI, RBI); } +bool SPIRVInstructionSelector::selectWaveReduceMin(Register ResVReg, + const SPIRVType *ResType, + MachineInstr &I, + bool IsUnsigned) const { + assert(I.getNumOperands() == 3); + assert(I.getOperand(2).isReg()); + MachineBasicBlock &BB = *I.getParent(); + Register InputRegister = I.getOperand(2).getReg(); + SPIRVType *InputType = GR.getSPIRVTypeForVReg(InputRegister); + + if (!InputType) + report_fatal_error("Input Type could not be determined."); + + SPIRVType *IntTy = GR.getOrCreateSPIRVIntegerType(32, I, TII); + // Retreive the operation to use based on input type + bool IsFloatTy = GR.isScalarOrVectorOfType(InputRegister, SPIRV::OpTypeFloat); + auto IntegerOpcodeType = + IsUnsigned ? SPIRV::OpGroupNonUniformUMin : SPIRV::OpGroupNonUniformSMin; + auto Opcode = IsFloatTy ? SPIRV::OpGroupNonUniformFMin : IntegerOpcodeType; + return BuildMI(BB, I, I.getDebugLoc(), TII.get(Opcode)) + .addDef(ResVReg) + .addUse(GR.getSPIRVTypeID(ResType)) + .addUse(GR.getOrCreateConstInt(SPIRV::Scope::Subgroup, I, IntTy, TII, + !STI.isShader())) + .addImm(SPIRV::GroupOperation::Reduce) + .addUse(I.getOperand(2).getReg()) + .constrainAllUses(TII, TRI, RBI); +} + bool SPIRVInstructionSelector::selectWaveReduceSum(Register ResVReg, const SPIRVType *ResType, MachineInstr &I) const { @@ -3431,6 +3463,10 @@ bool SPIRVInstructionSelector::selectIntrinsic(Register ResVReg, return selectWaveReduceMax(ResVReg, ResType, I, /*IsUnsigned*/ true); case Intrinsic::spv_wave_reduce_max: return selectWaveReduceMax(ResVReg, ResType, I, /*IsUnsigned*/ false); + case Intrinsic::spv_wave_reduce_umin: + return selectWaveReduceMin(ResVReg, ResType, I, /*IsUnsigned*/ true); + case Intrinsic::spv_wave_reduce_min: + return selectWaveReduceMin(ResVReg, ResType, I, /*IsUnsigned*/ false); case Intrinsic::spv_wave_reduce_sum: return selectWaveReduceSum(ResVReg, ResType, I); case Intrinsic::spv_wave_readlane: |