[llvm] [LV] Add -fold-epilogue-tail option for tail-folded epilogue (PR #190697)

[David Sherwood via llvm-commits]

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@@ -9124,6 +9145,14 @@ bool LoopVectorizePass::processLoop(Loop *L) {
   LoopVectorizationPlanner LVP(L, LI, DT, TLI, *TTI, &LVL, CM, IAI, PSE, Hints,
                                ORE);
 
+  if (TailFoldingPolicy.getNumOccurrences() &&
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david-arm wrote:

I think you can just write `if (TailFoldingPolicy == TailFoldingPolicyTy::FoldEpilogueTail) {` here.

https://github.com/llvm/llvm-project/pull/190697