[all-commits] [llvm/llvm-project] 2a160b: GlobalISel: Reimplement widenScalar for G_UNMERGE_...

[Matt Arsenault via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 2a160ba5b0ad065ee7020c787e7f896416be3faa
      https://github.com/llvm/llvm-project/commit/2a160ba5b0ad065ee7020c787e7f896416be3faa
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2020-01-27 (Mon, 27 Jan 2020)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-unmerge-values.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/artifact-combiner-unmerge-values.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-anyext.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-bitcast.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-merge-values.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-sext.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-unmerge-values.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-zext.mir

  Log Message:
  -----------
  GlobalISel: Reimplement widenScalar for G_UNMERGE_VALUES results

Only use shifts if the requested type exactly matches the source type,
and create sub-unmerges otherwise.