[PATCH] D76847: [Target][ARM] Replace re-uses of old VPR values with VPNOTs

[Pierre van Houtryve via Phabricator via llvm-commits]

Pierre-vh updated this revision to Diff 253848.
Pierre-vh marked an inline comment as done.
Pierre-vh added a comment.

- Fixed issues found during review (comments marked as done)
- Improved the pass:
  - It can now move VPNOTs before their first user when needed. This currently only happens when another VCCR value is used between the VPNOT and its first user.
  - Instead of inserting VPNOTs before VPNOTs, it instead replaces the existing VPNOT with a COPY.
- Added more tests, and they now use virtual registers instead.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D76847/new/

https://reviews.llvm.org/D76847

Files:
  llvm/lib/Target/ARM/MVEVPTOptimisationsPass.cpp
  llvm/test/CodeGen/Thumb2/mve-vpt-optimisations.mir

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