[all-commits] [llvm/llvm-project] 00955a: AMDGPU/GlobalISel: Fix SALU mapping for v2s16 min/max

[Matt Arsenault via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 00955a62e4333c7ca889043d6a9033cb8cbf800d
      https://github.com/llvm/llvm-project/commit/00955a62e4333c7ca889043d6a9033cb8cbf800d
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2020-02-21 (Fri, 21 Feb 2020)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-smax.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-smin.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-umax.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-umin.mir

  Log Message:
  -----------
  AMDGPU/GlobalISel: Fix SALU mapping for v2s16 min/max

The legalizer helper functions are unusably awkward to perform the 3-5
part legalization. This needs to be widened, scalarized, lowered, and
we should avoid creating vector extends and truncates. Manually do all
of this and expand.