diff options
Diffstat (limited to 'llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp')
| -rw-r--r-- | llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp b/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp index 5591d9f..021353a 100644 --- a/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp +++ b/llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp @@ -355,9 +355,9 @@ private: SPIRVType *widenTypeToVec4(const SPIRVType *Type, MachineInstr &I) const; bool extractSubvector(Register &ResVReg, const SPIRVType *ResType, Register &ReadReg, MachineInstr &InsertionPoint) const; - bool generateImageRead(Register &ResVReg, const SPIRVType *ResType, - Register ImageReg, Register IdxReg, DebugLoc Loc, - MachineInstr &Pos) const; + bool generateImageReadOrFetch(Register &ResVReg, const SPIRVType *ResType, + Register ImageReg, Register IdxReg, + DebugLoc Loc, MachineInstr &Pos) const; bool BuildCOPY(Register DestReg, Register SrcReg, MachineInstr &I) const; bool loadVec3BuiltinInputID(SPIRV::BuiltIn::BuiltIn BuiltInValue, Register ResVReg, const SPIRVType *ResType, @@ -1321,8 +1321,8 @@ bool SPIRVInstructionSelector::selectLoad(Register ResVReg, } Register IdxReg = IntPtrDef->getOperand(3).getReg(); - return generateImageRead(ResVReg, ResType, NewHandleReg, IdxReg, - I.getDebugLoc(), I); + return generateImageReadOrFetch(ResVReg, ResType, NewHandleReg, IdxReg, + I.getDebugLoc(), I); } } @@ -3639,27 +3639,33 @@ bool SPIRVInstructionSelector::selectReadImageIntrinsic( DebugLoc Loc = I.getDebugLoc(); MachineInstr &Pos = I; - return generateImageRead(ResVReg, ResType, NewImageReg, IdxReg, Loc, Pos); + return generateImageReadOrFetch(ResVReg, ResType, NewImageReg, IdxReg, Loc, + Pos); } -bool SPIRVInstructionSelector::generateImageRead(Register &ResVReg, - const SPIRVType *ResType, - Register ImageReg, - Register IdxReg, DebugLoc Loc, - MachineInstr &Pos) const { +bool SPIRVInstructionSelector::generateImageReadOrFetch( + Register &ResVReg, const SPIRVType *ResType, Register ImageReg, + Register IdxReg, DebugLoc Loc, MachineInstr &Pos) const { SPIRVType *ImageType = GR.getSPIRVTypeForVReg(ImageReg); assert(ImageType && ImageType->getOpcode() == SPIRV::OpTypeImage && "ImageReg is not an image type."); + bool IsSignedInteger = sampledTypeIsSignedInteger(GR.getTypeForSPIRVType(ImageType)); + // Check if the "sampled" operand of the image type is 1. + // https://registry.khronos.org/SPIR-V/specs/unified1/SPIRV.html#OpImageFetch + auto SampledOp = ImageType->getOperand(6); + bool IsFetch = (SampledOp.getImm() == 1); uint64_t ResultSize = GR.getScalarOrVectorComponentCount(ResType); if (ResultSize == 4) { - auto BMI = BuildMI(*Pos.getParent(), Pos, Loc, TII.get(SPIRV::OpImageRead)) - .addDef(ResVReg) - .addUse(GR.getSPIRVTypeID(ResType)) - .addUse(ImageReg) - .addUse(IdxReg); + auto BMI = + BuildMI(*Pos.getParent(), Pos, Loc, + TII.get(IsFetch ? SPIRV::OpImageFetch : SPIRV::OpImageRead)) + .addDef(ResVReg) + .addUse(GR.getSPIRVTypeID(ResType)) + .addUse(ImageReg) + .addUse(IdxReg); if (IsSignedInteger) BMI.addImm(0x1000); // SignExtend @@ -3668,11 +3674,13 @@ bool SPIRVInstructionSelector::generateImageRead(Register &ResVReg, SPIRVType *ReadType = widenTypeToVec4(ResType, Pos); Register ReadReg = MRI->createVirtualRegister(GR.getRegClass(ReadType)); - auto BMI = BuildMI(*Pos.getParent(), Pos, Loc, TII.get(SPIRV::OpImageRead)) - .addDef(ReadReg) - .addUse(GR.getSPIRVTypeID(ReadType)) - .addUse(ImageReg) - .addUse(IdxReg); + auto BMI = + BuildMI(*Pos.getParent(), Pos, Loc, + TII.get(IsFetch ? SPIRV::OpImageFetch : SPIRV::OpImageRead)) + .addDef(ReadReg) + .addUse(GR.getSPIRVTypeID(ReadType)) + .addUse(ImageReg) + .addUse(IdxReg); if (IsSignedInteger) BMI.addImm(0x1000); // SignExtend bool Succeed = BMI.constrainAllUses(TII, TRI, RBI); |