[all-commits] [llvm/llvm-project] 2a44ea: [LV] Allow a scalable VF for the epilogue.

[sdesmalen-arm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2a44eaf20f2533c913b2a342dd29669717598957
      https://github.com/llvm/llvm-project/commit/2a44eaf20f2533c913b2a342dd29669717598957
  Author: Sander de Smalen <sander.desmalen at arm.com>
  Date:   2022-02-01 (Tue, 01 Feb 2022)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/sve-epilog-vect.ll

  Log Message:
  -----------
  [LV] Allow a scalable VF for the epilogue.

For some reason we limited the epilogue VF to be fixed-width, but there
is not necessarily a reason for doing so. If the main VF=vscale x 16, the
epilogue VF could be either fixed-width, or a scalable VF upto vscale x 8.

Reviewed By: david-arm

Differential Revision: https://reviews.llvm.org/D118688