diff options
| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2016-05-18 16:10:19 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2016-05-18 16:10:19 +0000 |
| commit | 1735da460b1494a9fcc40b6af8006e78fa3f1475 (patch) | |
| tree | 9335825ce59f9ee06c8668ec8da90fe3db8fa623 /llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h | |
| parent | 8eb336c14e4c033a3f81a3a43fe397f0879a2e68 (diff) | |
| download | bcm5719-llvm-1735da460b1494a9fcc40b6af8006e78fa3f1475.tar.gz bcm5719-llvm-1735da460b1494a9fcc40b6af8006e78fa3f1475.zip | |
AMDGPU: Other sizes of popcnt are fast
We can chain bcnt instructions together, so
any width popcnt is pretty fast.
llvm-svn: 269950
Diffstat (limited to 'llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h b/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h index 036f627e466..25187a280e3 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h +++ b/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h @@ -76,7 +76,7 @@ public: TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth) { assert(isPowerOf2_32(TyWidth) && "Ty width must be power of 2"); - return ST->hasBCNT(TyWidth) ? TTI::PSK_FastHardware : TTI::PSK_Software; + return TTI::PSK_FastHardware; } unsigned getNumberOfRegisters(bool Vector); |
