diff options
Diffstat (limited to 'llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp index 2b498a88f52..91ccac7c2e6 100644 --- a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp +++ b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp @@ -1082,9 +1082,13 @@ int BoUpSLP::getTreeCost() { Cost += C; } + SmallSet<Value *, 16> ExtractCostCalculated; int ExtractCost = 0; for (UserList::iterator I = ExternalUses.begin(), E = ExternalUses.end(); I != E; ++I) { + // We only add extract cost once for the same scalar. + if (!ExtractCostCalculated.insert(I->Scalar)) + continue; VectorType *VecTy = VectorType::get(I->Scalar->getType(), BundleWidth); ExtractCost += TTI->getVectorInstrCost(Instruction::ExtractElement, VecTy, |
