[all-commits] [llvm/llvm-project] 0a8cae: [ReachingDefs] Make isSafeToMove more strict.

[Sam Parker via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 0a8cae10feb283b7a0886c5b52055de3db8b0e10
      https://github.com/llvm/llvm-project/commit/0a8cae10feb283b7a0886c5b52055de3db8b0e10
  Author: Sam Parker <sam.parker at arm.com>
  Date:   2020-02-06 (Thu, 06 Feb 2020)

  Changed paths:
    M llvm/lib/CodeGen/ReachingDefAnalysis.cpp
    M llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/move-def-before-start.mir

  Log Message:
  -----------
  [ReachingDefs] Make isSafeToMove more strict.

Test that we're not moving the instruction through instructions with
side-effects.

Differential Revision: https://reviews.llvm.org/D74058