[all-commits] [llvm/llvm-project] 42d560: AMDGPU/GlobalISel: Start handling _L to _LZ optimi...

[Matt Arsenault via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 42d5609809836aceff41f78ab652a882d4982260
      https://github.com/llvm/llvm-project/commit/42d5609809836aceff41f78ab652a882d4982260
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2020-03-30 (Mon, 30 Mar 2020)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    A llvm/test/CodeGen/AMDGPU/GlobalISel/image_ls_mipmap_zero.a16.ll
    A llvm/test/CodeGen/AMDGPU/GlobalISel/image_ls_mipmap_zero.ll
    A llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.sample.ltolz.a16.ll
    A llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.image.sample.ltolz.ll

  Log Message:
  -----------
  AMDGPU/GlobalISel: Start handling _L to _LZ optimization

We currently don't have a way to map to the equivalent intrinsic
opcode, so track immediate 0s in place of the address for the
selection to know to change the final opcode.