[llvm] [LV] Vectorize selecting last IV of min/max element. (PR #141431)

[Florian Hahn via llvm-commits]

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@@ -1251,7 +1251,9 @@ llvm::canParallelizeReductionWhenUnrolling(PHINode &Phi, Loop *L,
   RecurrenceDescriptor RdxDesc;
   if (!RecurrenceDescriptor::isReductionPHI(&Phi, L, RdxDesc,
                                             /*DemandedBits=*/nullptr,
-                                            /*AC=*/nullptr, /*DT=*/nullptr, SE))
+                                            /*AC=*/nullptr, /*DT=*/nullptr,
+                                            SE) ||
+      RdxDesc.isPhiMultiUse())
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fhahn wrote:

Done thanks

https://github.com/llvm/llvm-project/pull/141431