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| author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2014-02-24 19:52:29 +0000 |
|---|---|---|
| committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2014-02-24 19:52:29 +0000 |
| commit | 9611d23d6379eafb9c3fd4d3a878460ff05733d0 (patch) | |
| tree | 58d518fdf29204da0fb4befeaf1de669101c0185 /llvm/lib/Transforms | |
| parent | 40083a432600dac7f87ca3880c012c1fd520a92e (diff) | |
| download | bcm5719-llvm-9611d23d6379eafb9c3fd4d3a878460ff05733d0.tar.gz bcm5719-llvm-9611d23d6379eafb9c3fd4d3a878460ff05733d0.zip | |
SLPVectorizer: Try vectorizing 'splat' stores
Vectorize sequential stores of a broadcasted value.
5% on eon.
radar://16124699
llvm-svn: 202067
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp index 360652f3dce..8e3ec815e82 100644 --- a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp +++ b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp @@ -1101,11 +1101,15 @@ bool BoUpSLP::isFullyVectorizableTinyTree() { if (VectorizableTree.size() != 2) return false; + // Handle splat stores. + if (!VectorizableTree[0].NeedToGather && isSplat(VectorizableTree[1].Scalars)) + return true; + // Gathering cost would be too much for tiny trees. - if (VectorizableTree[0].NeedToGather || VectorizableTree[1].NeedToGather) - return false; + if (VectorizableTree[0].NeedToGather || VectorizableTree[1].NeedToGather) + return false; - return true; + return true; } int BoUpSLP::getTreeCost() { |
