[all-commits] [llvm/llvm-project] 9b979d: [LV][EpilogueTF] Exclude loops with recurrences, a...

[Hassnaa Hamdi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9b979d29871667648b5213e9535b9ea86d90d067
      https://github.com/llvm/llvm-project/commit/9b979d29871667648b5213e9535b9ea86d90d067
  Author: Hassnaa Hamdi <hassnaa.hamdi at arm.com>
  Date:   2026-09-23 (Wed, 23 Sep 2026)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/test/Transforms/LoopVectorize/fold-epilogue-tail.ll

  Log Message:
  -----------
  [LV][EpilogueTF] Exclude loops with recurrences, alias-masking or unmaskable IAI  (#224835)

This patch excludes loops with reductions, fixed-order recurrences, or
alias-masking from the tail-folded epilogue path, since those cases
are not yet supported. 
It also excludes loops with interleaved accesses when the target doesn't
support masking them, since a tail-folded epilogue reuses the main
loop's IAI and so it can't invalidate those IAI when they can't be masked.



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