[llvm] [LV] Disable fold tail by masking - when induction vars used outside (PR #81609)

[Florian Hahn via llvm-commits]

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@@ -0,0 +1,85 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -passes=loop-vectorize -S | FileCheck %s
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fhahn wrote:

As this is added as a target-independent test, it probably needs something like `-force-vector-width=4 -force-vector-interleave=1` to make sure the vectorizer tries to vectorize independent of the cost-model.

https://github.com/llvm/llvm-project/pull/81609