[all-commits] [llvm/llvm-project] 5a0b14: GlobalISel: Handle zext(sext x) in artifact combiner

[Matt Arsenault via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 5a0b1472c0e4e08071c688d03800f1b54983187d
      https://github.com/llvm/llvm-project/commit/5a0b1472c0e4e08071c688d03800f1b54983187d
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2020-08-07 (Fri, 07 Aug 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/GlobalISel/LegalizationArtifactCombiner.h
    M llvm/test/CodeGen/AMDGPU/GlobalISel/artifact-combiner-zext.mir

  Log Message:
  -----------
  GlobalISel: Handle zext(sext x) in artifact combiner

This eliminates the illegal intermediate s8 value in the added test.