From 520838977ba29e9e5557db2b3dde36f8e7d2be64 Mon Sep 17 00:00:00 2001 From: James Molloy Date: Wed, 9 Sep 2015 12:51:10 +0000 Subject: [PATCH] Rename ExitCount to BackedgeTakenCount, because that's what it is. We called a variable ExitCount, stored the backedge count in it, then redefined it to be the exit count again. llvm-svn: 247140 --- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp index 120f094307ce..31eb5e6beb22 100644 --- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp +++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp @@ -2605,8 +2605,8 @@ Value *InnerLoopVectorizer::getOrCreateTripCount(Loop *L) { IRBuilder<> Builder(L->getLoopPreheader()->getTerminator()); // Find the loop boundaries. - const SCEV *ExitCount = SE->getBackedgeTakenCount(OrigLoop); - assert(ExitCount != SE->getCouldNotCompute() && "Invalid loop count"); + const SCEV *BackedgeTakenCount = SE->getBackedgeTakenCount(OrigLoop); + assert(BackedgeTakenCount != SE->getCouldNotCompute() && "Invalid loop count"); Type *IdxTy = Legal->getWidestInductionType(); @@ -2615,14 +2615,15 @@ Value *InnerLoopVectorizer::getOrCreateTripCount(Loop *L) { // compare. The only way that we get a backedge taken count is that the // induction variable was signed and as such will not overflow. In such a case // truncation is legal. - if (ExitCount->getType()->getPrimitiveSizeInBits() > + if (BackedgeTakenCount->getType()->getPrimitiveSizeInBits() > IdxTy->getPrimitiveSizeInBits()) - ExitCount = SE->getTruncateOrNoop(ExitCount, IdxTy); - - const SCEV *BackedgeTakeCount = SE->getNoopOrZeroExtend(ExitCount, IdxTy); + BackedgeTakenCount = SE->getTruncateOrNoop(BackedgeTakenCount, IdxTy); + BackedgeTakenCount = SE->getNoopOrZeroExtend(BackedgeTakenCount, IdxTy); + // Get the total trip count from the count by adding 1. - ExitCount = SE->getAddExpr(BackedgeTakeCount, - SE->getConstant(BackedgeTakeCount->getType(), 1)); + const SCEV *ExitCount = + SE->getAddExpr(BackedgeTakenCount, + SE->getConstant(BackedgeTakenCount->getType(), 1)); const DataLayout &DL = L->getHeader()->getModule()->getDataLayout();