diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp index 45cfa24f283..d1b569d4cd3 100644 --- a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp +++ b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp @@ -4287,7 +4287,8 @@ private: int VecReduxCost = IsPairwiseReduction ? PairwiseRdxCost : SplittingRdxCost; int ScalarReduxCost = - ReduxWidth * TTI->getArithmeticInstrCost(ReductionOpcode, VecTy); + (ReduxWidth - 1) * + TTI->getArithmeticInstrCost(ReductionOpcode, ScalarTy); DEBUG(dbgs() << "SLP: Adding cost " << VecReduxCost - ScalarReduxCost << " for reduction that starts with " << *FirstReducedVal |
