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| author | Changpeng Fang <changpeng.fang@gmail.com> | 2017-03-09 00:07:00 +0000 |
|---|---|---|
| committer | Changpeng Fang <changpeng.fang@gmail.com> | 2017-03-09 00:07:00 +0000 |
| commit | 1be9b9f81694617edd85e28f03cab07b3864f7e1 (patch) | |
| tree | 7c3a14b6cc00daac79830b98d94f1f0c27d65fe4 /llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp | |
| parent | 8537d9994dbd041da176059449d060f2f320fc1a (diff) | |
| download | bcm5719-llvm-1be9b9f81694617edd85e28f03cab07b3864f7e1.tar.gz bcm5719-llvm-1be9b9f81694617edd85e28f03cab07b3864f7e1.zip | |
AMDGPU/SI: Disable unrolling in the loop vectorizer if the loop is not vectorized.
Reviewers:
arsenm
Differential Revision:
http://reviews.llvm.org/D30719
llvm-svn: 297328
Diffstat (limited to 'llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp index a780a76c86a..4a6d12bd883 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp @@ -155,6 +155,10 @@ bool AMDGPUTTIImpl::isLegalToVectorizeStoreChain(unsigned ChainSizeInBytes, } unsigned AMDGPUTTIImpl::getMaxInterleaveFactor(unsigned VF) { + // Disable unrolling if the loop is not vectorized. + if (VF == 1) + return 1; + // Semi-arbitrary large amount. return 64; } |
