[all-commits] [llvm/llvm-project] b567ff: [ARM][MVE] Tail-predication: support constant trip...

[sjoerdmeijer via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: b567ff2fa05c7df1b3bf74e7a79daa7aa5bd5912
      https://github.com/llvm/llvm-project/commit/b567ff2fa05c7df1b3bf74e7a79daa7aa5bd5912
  Author: Sjoerd Meijer <sjoerd.meijer at arm.com>
  Date:   2020-01-27 (Mon, 27 Jan 2020)

  Changed paths:
    M llvm/lib/Target/ARM/MVETailPredication.cpp
    A llvm/test/CodeGen/Thumb2/LowOverheadLoops/tail-pred-const.ll

  Log Message:
  -----------
  [ARM][MVE] Tail-predication: support constant trip count

We had support for runtime trip count values, but not constants, and this adds
supports for that.

And added a minor optimisation while I was add it: don't invoke Cleanup when
there's nothing to clean up.

Differential Revision: https://reviews.llvm.org/D73198