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-rw-r--r--llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
index a1c642e7344..87a861970d1 100644
--- a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -3643,6 +3643,8 @@ BoUpSLP::vectorizeTree(ExtraValueToDebugLocsMap &ExternallyUsedValues) {
auto &Locs = ExternallyUsedValues[Scalar];
ExternallyUsedValues.insert({Ex, Locs});
ExternallyUsedValues.erase(Scalar);
+ // Required to update internally referenced instructions.
+ Scalar->replaceAllUsesWith(Ex);
continue;
}
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