[all-commits] [llvm/llvm-project] 63c4be: AMDGPU/GlobalISel: Try to promote to use packed sa...

[Matt Arsenault via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 63c4be53cf5569369e67b5cd7958e5eb1bfcd85a
      https://github.com/llvm/llvm-project/commit/63c4be53cf5569369e67b5cd7958e5eb1bfcd85a
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2020-08-06 (Thu, 06 Aug 2020)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-saddsat.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-ssubsat.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-uaddsat.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-usubsat.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/saddsat.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/ssubsat.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/uaddsat.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/usubsat.ll

  Log Message:
  -----------
  AMDGPU/GlobalISel: Try to promote to use packed saturating add/sub

This produces worse results right now for i8 vectors, but that should
be addressed when we actually try to optimize packed vectors.