[all-commits] [llvm/llvm-project] e93e0d: [ARM][LowOverheadLoops] Update liveness info

[Sam Parker via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: e93e0d413f3afa1df5c5f88df546bebcd1183155
      https://github.com/llvm/llvm-project/commit/e93e0d413f3afa1df5c5f88df546bebcd1183155
  Author: Sam Parker <sam.parker at arm.com>
  Date:   2020-01-09 (Thu, 09 Jan 2020)

  Changed paths:
    M llvm/lib/CodeGen/LivePhysRegs.cpp
    M llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/disjoint-vcmp.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/dont-remove-loop-update.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/dont-remove-loop-update2.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/dont-remove-loop-update3.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/loop-guards.ll
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/mov-lr-terminator.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/move-def-before-start.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/move-start-after-def.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/unsafe-cpsr-loop-use.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/vctp-in-vpt-2.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/vctp-in-vpt.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/while.mir
    M llvm/test/CodeGen/Thumb2/LowOverheadLoops/wlstp.mir

  Log Message:
  -----------
  [ARM][LowOverheadLoops] Update liveness info

After expanding the pseudo instructions, update the liveness info.
We do this in a post-order traversal of the loop, including its
exit blocks and preheader(s).

Differential Revision: https://reviews.llvm.org/D72131