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Remove redundant variable. 

Tested by adding assert(LoopVectorPreHeader == VecPreheader) on LLVM
test suite and SPECs.

llvm-svn: 223847
This commit is contained in:
Michael Zolotukhin 2014-12-09 22:45:07 +00:00
parent df833a4918
commit 4def395646
1 changed files with 2 additions and 4 deletions
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6
llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
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@ -2833,9 +2833,6 @@ void InnerLoopVectorizer::vectorizeLoop() {
}
// Fix the vector-loop phi.
// We created the induction variable so we know that the
// preheader is the first entry.
BasicBlock *VecPreheader = Induction->getIncomingBlock(0);
// Reductions do not have to start at zero. They can start with
// any loop invariant values.
@ -2847,7 +2844,8 @@ void InnerLoopVectorizer::vectorizeLoop() {
// Make sure to add the reduction stat value only to the
// first unroll part.
Value *StartVal = (part == 0) ? VectorStart : Identity;
cast<PHINode>(VecRdxPhi[part])->addIncoming(StartVal, VecPreheader);
cast<PHINode>(VecRdxPhi[part])->addIncoming(StartVal,
LoopVectorPreHeader);
cast<PHINode>(VecRdxPhi[part])->addIncoming(Val[part],
LoopVectorBody.back());
}