[all-commits] [llvm/llvm-project] 9283c4: [AMDGPU] Fix lowering of @llvm.amdgcn.set.inactive...

[Jay Foad via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9283c43ee2611b728bdabf08522336e01d5a31bf
      https://github.com/llvm/llvm-project/commit/9283c43ee2611b728bdabf08522336e01d5a31bf
  Author: Jay Foad <jay.foad at amd.com>
  Date:   2023-05-22 (Mon, 22 May 2023)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp
    M llvm/test/CodeGen/AMDGPU/llvm.amdgcn.set.inactive.ll

  Log Message:
  -----------
  [AMDGPU] Fix lowering of @llvm.amdgcn.set.inactive(imm, poison)

If the second argument of V_SET_INACTIVE is undef/poison,
SIWholeQuadMode lowered it to a COPY from the first argument, but that
caused invalid MIR if the first argument was an immediate rather than a
register.

Fix this by lowering to a V_MOV instruction instead of a COPY.

Fixes https://github.com/llvm/llvm-project/issues/62862

Differential Revision: https://reviews.llvm.org/D151105