================
@@ -9058,6 +9026,20 @@ void
LoopVectorizationPlanner::adjustRecipesForReductions(
LinkVPBB->insert(FMulRecipe, CurrentLink->getIterator());
VecOp = FMulRecipe;
} else {
+ auto *Blend = dyn_cast<VPBlendRecipe>(CurrentLink);
+ if (PhiR->isInLoop() && Blend) {
+ assert(Blend->getNumIncomingValues() == 2 &&
+ "Blend must have 2 incoming values");
+ if (Blend->getIncomingValue(0) == PhiR)
+ Blend->replaceAllUsesWith(Blend->getIncomingValue(1));
+ else {
+ Blend->replaceAllUsesWith(Blend->getIncomingValue(0));
+ assert(Blend->getIncomingValue(1) == PhiR &&
+ "PhiR must be an operand of the blend");
----------------
ayalz wrote:
nit: may be slightly more consistent to have the assert first.
https://github.com/llvm/llvm-project/pull/76090
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