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author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2014-02-24 19:52:29 +0000 |
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committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2014-02-24 19:52:29 +0000 |
commit | 68085c7bef7546da3eea848093c89f82aa3c2594 (patch) | |
tree | cc21a1cf3f53f2f8105c1f58f5882c26f7bcd5e1 /lib/Transforms | |
parent | b55c398992cf39855ab0cedcef3eb7439abe524e (diff) | |
download | llvm-68085c7bef7546da3eea848093c89f82aa3c2594.tar.gz llvm-68085c7bef7546da3eea848093c89f82aa3c2594.tar.bz2 llvm-68085c7bef7546da3eea848093c89f82aa3c2594.tar.xz |
SLPVectorizer: Try vectorizing 'splat' stores
Vectorize sequential stores of a broadcasted value.
5% on eon.
radar://16124699
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202067 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
-rw-r--r-- | lib/Transforms/Vectorize/SLPVectorizer.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/Transforms/Vectorize/SLPVectorizer.cpp b/lib/Transforms/Vectorize/SLPVectorizer.cpp index 360652f3dc..8e3ec815e8 100644 --- a/lib/Transforms/Vectorize/SLPVectorizer.cpp +++ b/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() { |