diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp b/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp index 1115d8c2362..8912ef44603 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPUISelLowering.cpp @@ -4435,6 +4435,9 @@ void AMDGPUTargetLowering::computeKnownBitsForTargetNode( unsigned TrailZ = LHSKnown.countMinTrailingZeros() + RHSKnown.countMinTrailingZeros(); Known.Zero.setLowBits(std::min(TrailZ, 32u)); + // Skip extra check if all bits are known zeros. + if (TrailZ >= 32) + break; // Truncate to 24 bits. LHSKnown = LHSKnown.trunc(24); |
