================
@@ -9142,7 +9178,9 @@ void LoopVectorizationPlanner::adjustRecipesForReductions(
// then extend the loop exit value to enable InstCombine to evaluate the
// entire expression in the smaller type.
Type *PhiTy = PhiR->getStartValue()->getLiveInIRValue()->getType();
- if (MinVF.isVector() && PhiTy != RdxDesc.getRecurrenceType()) {
+ if (MinVF.isVector() && PhiTy != RdxDesc.getRecurrenceType() &&
+ !RecurrenceDescriptor::isAnyOfRecurrenceKind(
+ RdxDesc.getRecurrenceKind())) {
----------------
fhahn wrote:
We only reach this path now because we adjust PhiR's start value to a bool. It
requires more than plain truncates as below, so I think it's probably worth to
keep it separate. I *think* it also needs handling before introducing selects
for tail-folding; otherwise those selects would also need updating.
https://github.com/llvm/llvm-project/pull/78304
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