diff options
Diffstat (limited to 'llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp index a6e4a63..40d960e 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp @@ -5879,8 +5879,12 @@ AMDGPULegalizerInfo::splitBufferOffsets(MachineIRBuilder &B, const LLT S32 = LLT::scalar(32); MachineRegisterInfo &MRI = *B.getMRI(); - std::tie(BaseReg, ImmOffset) = - AMDGPU::getBaseWithConstantOffset(MRI, OrigOffset); + // On GFX1250+, voffset and immoffset are zero-extended from 32 bits before + // being added, so we can only safely match a 32-bit addition with no unsigned + // overflow. + bool CheckNUW = AMDGPU::isGFX1250(ST); + std::tie(BaseReg, ImmOffset) = AMDGPU::getBaseWithConstantOffset( + MRI, OrigOffset, /*KnownBits=*/nullptr, CheckNUW); // If BaseReg is a pointer, convert it to int. if (MRI.getType(BaseReg).isPointer()) |