[llvm] [LV][EVL] Fix the check for legality of folding with EVL. (PR #125678)

[Alexey Bataev via llvm-commits]

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@@ -4109,7 +4110,8 @@ LoopVectorizationCostModel::computeMaxVF(ElementCount UserVF, unsigned UserIC) {
   // found modulo the vectorization factor is not zero, try to fold the tail
   // by masking.
   // FIXME: look for a smaller MaxVF that does divide TC rather than masking.
-  setTailFoldingStyles(MaxFactors.ScalableVF.isScalable(), UserIC);
+  bool ContainsScalableVF = MaxFactors.ScalableVF.isNonZero();
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alexey-bataev wrote:

`bool ContainsScalableVF = MaxFactors.ScalableVF && MaxFactors.ScalableVF.isScalable();`

https://github.com/llvm/llvm-project/pull/125678