[llvm] [LV][NFC] Clean up tail-folding check for early-exit loops (PR #133931)

[Shih-Po Hung via llvm-commits]

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@@ -4049,7 +4033,9 @@ LoopVectorizationCostModel::computeMaxVF(ElementCount UserVF, unsigned UserIC) {
     return Rem->isZero();
   };
 
-  if (MaxPowerOf2RuntimeVF > 0u) {
+  bool HasSingleLatchExit =
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arcbbb wrote:

Thanks! It does streamline the code.
I had been thinking that enabling the EVL transform would require going through setTailFoldingStyles(). But you're right — for loops where the trip count is known to be a multiple of the VF, using a non-predicated form should work well.

https://github.com/llvm/llvm-project/pull/133931