[all-commits] [llvm/llvm-project] d8d058: [TwoAddressInstruction] Update LiveIntervals after...

[Jay Foad via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d8d0588f663b37c1c3d95ac8986a2a7a8865ce0b
      https://github.com/llvm/llvm-project/commit/d8d0588f663b37c1c3d95ac8986a2a7a8865ce0b
  Author: Jay Foad <jay.foad at amd.com>
  Date:   2023-09-18 (Mon, 18 Sep 2023)

  Changed paths:
    M llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
    M llvm/test/CodeGen/Thumb2/mve-fmath.ll
    M llvm/test/CodeGen/Thumb2/mve-shuffle.ll
    M llvm/test/CodeGen/Thumb2/mve-vld3.ll

  Log Message:
  -----------
  [TwoAddressInstruction] Update LiveIntervals after INSERT_SUBREG with undef read (#66211)

Update LiveIntervals after rewriting:
  %reg = INSERT_SUBREG undef %reg, %subreg, subidx
to:
  undef %reg:subidx = COPY %subreg

D113044 implemented this for the non-undef case.