[llvm] r190422 - LoopVectorize: PHI nodes are always at the beginning of a block, no need to scan the whole block.

[Benjamin Kramer]

Author: d0k
Date: Tue Sep 10 13:46:15 2013
New Revision: 190422

URL: http://llvm.org/viewvc/llvm-project?rev=190422&view=rev
Log:
LoopVectorize: PHI nodes are always at the beginning of a block, no need to scan the whole block.

Modified:
    llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp

Modified: llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp?rev=190422&r1=190421&r2=190422&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp (original)
+++ llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp Tue Sep 10 13:46:15 2013
@@ -2175,7 +2175,7 @@ InnerLoopVectorizer::vectorizeLoop(LoopV
     for (BasicBlock::iterator LEI = LoopExitBlock->begin(),
          LEE = LoopExitBlock->end(); LEI != LEE; ++LEI) {
       PHINode *LCSSAPhi = dyn_cast<PHINode>(LEI);
-      if (!LCSSAPhi) continue;
+      if (!LCSSAPhi) break;
 
       // All PHINodes need to have a single entry edge, or two if
       // we already fixed them.
@@ -2208,7 +2208,7 @@ void InnerLoopVectorizer::fixLCSSAPHIs()
   for (BasicBlock::iterator LEI = LoopExitBlock->begin(),
        LEE = LoopExitBlock->end(); LEI != LEE; ++LEI) {
     PHINode *LCSSAPhi = dyn_cast<PHINode>(LEI);
-    if (!LCSSAPhi) continue;
+    if (!LCSSAPhi) break;
     if (LCSSAPhi->getNumIncomingValues() == 1)
       LCSSAPhi->addIncoming(UndefValue::get(LCSSAPhi->getType()),
                             LoopMiddleBlock);