[all-commits] [llvm/llvm-project] 3a8104: Precommit test showing oppurtunity when computing ...

[Philip Reames via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3a8104a9ea3d88fb4d0ef17185e420c814757bfd
      https://github.com/llvm/llvm-project/commit/3a8104a9ea3d88fb4d0ef17185e420c814757bfd
  Author: Philip Reames <listmail at philipreames.com>
  Date:   2019-11-19 (Tue, 19 Nov 2019)

  Changed paths:
    A llvm/test/Analysis/ScalarEvolution/trip-count-andor.ll

  Log Message:
  -----------
  Precommit test showing oppurtunity when computing exit tests of unsimplified IR

If we partially unswitch a loop, we leave around the (and i1 X, true) or (or i1 X, false) forms.  At the moment, this inhibits SCEVs ability to compute trip counts, patch forthcoming.