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LoopVectorize: PHI nodes are always at the beginning of a block, no need to scan the whole block.
llvm-svn: 190422
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@ -2175,7 +2175,7 @@ InnerLoopVectorizer::vectorizeLoop(LoopVectorizationLegality *Legal) {
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for (BasicBlock::iterator LEI = LoopExitBlock->begin(),
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LEE = LoopExitBlock->end(); LEI != LEE; ++LEI) {
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PHINode *LCSSAPhi = dyn_cast<PHINode>(LEI);
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if (!LCSSAPhi) continue;
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if (!LCSSAPhi) break;
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// All PHINodes need to have a single entry edge, or two if
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// we already fixed them.
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@ -2208,7 +2208,7 @@ void InnerLoopVectorizer::fixLCSSAPHIs() {
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for (BasicBlock::iterator LEI = LoopExitBlock->begin(),
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LEE = LoopExitBlock->end(); LEI != LEE; ++LEI) {
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PHINode *LCSSAPhi = dyn_cast<PHINode>(LEI);
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if (!LCSSAPhi) continue;
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if (!LCSSAPhi) break;
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if (LCSSAPhi->getNumIncomingValues() == 1)
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LCSSAPhi->addIncoming(UndefValue::get(LCSSAPhi->getType()),
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LoopMiddleBlock);
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