[llvm] [LV]Set tailfolding styles before computing feasible max VF. (PR #91403)

[Florian Hahn via llvm-commits]

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@@ -1548,6 +1548,12 @@ class LoopVectorizationCostModel {
     }
   }
 
+  void disableTailFolding() {
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fhahn wrote:

document

https://github.com/llvm/llvm-project/pull/91403