[all-commits] [llvm/llvm-project] 767999: [AMDGPU][GlobalISel] Support mad/fma_mix selection

[Pierre van Houtryve via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 767999fca84819c74166bc6768806ed72f00e601
      https://github.com/llvm/llvm-project/commit/767999fca84819c74166bc6768806ed72f00e601
  Author: Pierre van Houtryve <pierre.vanhoutryve at amd.com>
  Date:   2022-11-08 (Tue, 08 Nov 2022)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUGISel.td
    M llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.h
    M llvm/lib/Target/AMDGPU/VOP3PInstructions.td
    M llvm/test/CodeGen/AMDGPU/GlobalISel/combine-fma-add-ext-fma.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/combine-fma-add-ext-mul.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/combine-fma-sub-ext-mul.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/combine-fma-sub-ext-neg-mul.ll
    M llvm/test/CodeGen/AMDGPU/mad-mix-hi.ll
    M llvm/test/CodeGen/AMDGPU/mad-mix-lo.ll
    M llvm/test/CodeGen/AMDGPU/mad-mix.ll

  Log Message:
  -----------
  [AMDGPU][GlobalISel] Support mad/fma_mix selection

Adds support for selecting the following instructions using GlobalISel:
- v_mad_mix/v_fma_mix
- v_mad_mixhi/v_fma_mixhi
- v_mad_mixlo/v_fma_mixlo

To select those instructions properly, some additional changes were
needed which impacted other tests as well.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D134354