================
@@ -2432,12 +2437,40 @@ static void
tryToCreateAbstractReductionRecipe(VPReductionRecipe *Red,
Red->replaceAllUsesWith(AbstractR);
}
+/// This function tries to create an abstract recipe from a partial reduction
to
+/// hide its mul and extends from cost estimation.
+static void
+tryToCreateAbstractPartialReductionRecipe(VPPartialReductionRecipe *PRed) {
+ if (PRed->getOpcode() != Instruction::Add)
+ return;
+
+ VPRecipeBase *BinOpR = PRed->getBinOp()->getDefiningRecipe();
+ auto *BinOp = dyn_cast<VPWidenRecipe>(BinOpR);
+ if (!BinOp || BinOp->getOpcode() != Instruction::Mul)
+ return;
----------------
fhahn wrote:
```suggestion
VPRecipeBase *BinOpR = PRed->getBinOp()->getDefiningRecipe();
auto *BinOp = dyn_cast<VPWidenRecipe>(BinOpR);
if (!match(PRed->getBinOp(), m_Mul(m_ZExtOrSExt(Ext0), m_ZExtOrSExt(Ext1))))`
return;
```
Could you use pattern matching to combine some of the checks?
https://github.com/llvm/llvm-project/pull/136173
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