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SLPVectorizer: Add support for trees that don't start at binary operators, and add the cost of extracting values from the roots of the tree.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179475 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem
2013-04-14 05:15:53 +00:00
parent 618eda7a60
commit ab105ae95f
4 changed files with 62 additions and 7 deletions
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lib/Transforms/Vectorize/VecUtils.cpp
+10
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@@ -173,6 +173,16 @@ bool BoUpSLP::vectorizeStores(StoreList &Stores, int costThreshold) {
return Changed;
}
int BoUpSLP::getScalarizationCost(ValueList &VL) {
Type *ScalarTy = VL[0]->getType();
if (StoreInst *SI = dyn_cast<StoreInst>(VL[0]))
ScalarTy = SI->getValueOperand()->getType();
VectorType *VecTy = VectorType::get(ScalarTy, VL.size());
return getScalarizationCost(VecTy);
}
int BoUpSLP::getScalarizationCost(Type *Ty) {
int Cost = 0;
for (unsigned i = 0, e = cast<VectorType>(Ty)->getNumElements(); i < e; ++i)