[llvm] [LV] Vectorize maxnum/minnum w/o fast-math flags. (PR #148239)

[Florian Hahn via llvm-commits]

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@@ -4345,10 +4345,16 @@ VectorizationFactor LoopVectorizationPlanner::selectVectorizationFactor() {
 
 bool LoopVectorizationPlanner::isCandidateForEpilogueVectorization(
     ElementCount VF) const {
-  // Cross iteration phis such as reductions need special handling and are
-  // currently unsupported.
-  if (any_of(OrigLoop->getHeader()->phis(),
-             [&](PHINode &Phi) { return Legal->isFixedOrderRecurrence(&Phi); }))
+  // Cross iteration phis such as first-order recurrences and FMaxNum/FMinNum
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fhahn wrote:

Updated,thanks

https://github.com/llvm/llvm-project/pull/148239