[all-commits] [llvm/llvm-project] 443556: AMDGPU/GlobalISel: Fix some legalization of < dwor...

[Matt Arsenault via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 443556c18f5310b03891f4685ac3831bdcf6f5c7
      https://github.com/llvm/llvm-project/commit/443556c18f5310b03891f4685ac3831bdcf6f5c7
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2020-06-26 (Fri, 26 Jun 2020)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-constant.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-flat.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-global.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-local.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-private.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-store.mir

  Log Message:
  -----------
  AMDGPU/GlobalISel: Fix some legalization of < dword vector stores

This avoids many instances of failing to legalize a vector truncstore
of <4 x s8> to 2 bytes. We don't perfectly handle every truncstore
yet, largely because the given set of legalization actions can't
actually differentiate between changing the result type and changing
the memory type.