From: Duncan P. N. Exon Smith <dexonsmith@apple.com>
Date: Wed, 3 Dec 2014 05:41:20 +0000 (+0000)
Subject: LoopVectorize: Remove unnecessary RAUW
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=5ed8a767a02c5f687c04f8cee8a948e8402091e7;p=oota-llvm.git

LoopVectorize: Remove unnecessary RAUW

Remove an unnecessary `MDNode::replaceAllUsesWith()`.  In the preceding
line, `TheLoop->setLoopID()` visits all backedges and sets the new loop
ID.  This sufficiently updates the loop metadata.

Metadata RAUW is going away as part of PR21532.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223210 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Vectorize/LoopVectorize.cpp b/lib/Transforms/Vectorize/LoopVectorize.cpp
index a73c59bd4f1..83e19f406de 100644
--- a/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -1194,8 +1194,6 @@ private:
     NewLoopID->replaceOperandWith(0, NewLoopID);
 
     TheLoop->setLoopID(NewLoopID);
-    if (LoopID)
-      LoopID->replaceAllUsesWith(NewLoopID);
     LoopID = NewLoopID;
   }