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Commit 0b37f143 authored by Nadav Rotem's avatar Nadav Rotem
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LoopVectorizer: Fix a bug in the code that updates the loop exiting block. 

LCSSA PHIs may have undef values. The vectorizer updates values that are used by outside users such as PHIs.
The bug happened because undefs are not loop values. This patch handles these PHIs.

PR14725

llvm-svn: 171251
parent 56bf2e18
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