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set the cost of tiny trees to INT_MAX in SLP vectorizer to disable vectorization on them

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191314 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Yi Jiang 2013-09-24 17:26:43 +00:00
parent 989779ccc7
commit 085e23841e
1 changed files with 1 additions and 1 deletions
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lib/Transforms/Vectorize/SLPVectorizer.cpp
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@ -947,7 +947,7 @@ int BoUpSLP::getTreeCost() {
if (!VectorizableTree.size()) { if (!VectorizableTree.size()) {
assert(!ExternalUses.size() && "We should not have any external users"); assert(!ExternalUses.size() && "We should not have any external users");
} }
return 0; return INT_MAX;
} }
unsigned BundleWidth = VectorizableTree[0].Scalars.size(); unsigned BundleWidth = VectorizableTree[0].Scalars.size();