[llvm] [LV] Don't require scalar epilogue for unsupported IAG with tail (PR #96544)

[Kolya Panchenko via llvm-commits]

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@@ -1448,29 +1448,58 @@ class LoopVectorizationCostModel {
   /// Returns true if \p I is a memory instruction in an interleaved-group
   /// of memory accesses that can be vectorized with wide vector loads/stores
   /// and shuffles.
-  bool interleavedAccessCanBeWidened(Instruction *I, ElementCount VF);
+  bool interleavedAccessCanBeWidened(Instruction *I, ElementCount VF) const;
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nikolaypanchenko wrote:

https://github.com/llvm/llvm-project/pull/96681

https://github.com/llvm/llvm-project/pull/96544