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-rw-r--r--lib/Transforms/Vectorize/VecUtils.cpp6
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Transforms/Vectorize/VecUtils.cpp b/lib/Transforms/Vectorize/VecUtils.cpp
index 1618986042..3db4adf95c 100644
--- a/lib/Transforms/Vectorize/VecUtils.cpp
+++ b/lib/Transforms/Vectorize/VecUtils.cpp
@@ -141,9 +141,11 @@ bool BoUpSLP::vectorizeStoreChain(ArrayRef<Value *> Chain, int CostThreshold) {
}
}
- if (Changed)
- return true;
+ if (Changed || ChainLen > VF)
+ return Changed;
+ // Handle short chains. This helps us catch types such as <3 x float> that
+ // are smaller than vector size.
int Cost = getTreeCost(Chain);
if (Cost < CostThreshold) {
DEBUG(dbgs() << "SLP: Found store chain cost = " << Cost