[all-commits] [llvm/llvm-project] 5fe730: [ARM] Don't block tail-predication from unrelated ...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5fe7307146004c8e841b2340f075519be4a215ed
      https://github.com/llvm/llvm-project/commit/5fe7307146004c8e841b2340f075519be4a215ed
  Author: David Green <david.green at arm.com>
  Date:   2024-06-06 (Thu, 06 Jun 2024)

  Changed paths:
    M llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
    M llvm/test/CodeGen/Thumb2/mve-tailpred-vptblock.ll

  Log Message:
  -----------
  [ARM] Don't block tail-predication from unrelated VPT blocks. (#94239)

VPT blocks that do not produce an interesting 'output' (like a stored
value or reduction result), do not need to be predicated on vctp for the
whole loop to be tail-predicated. Just producing results for the valid
tail predication lanes should be enough.



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