[PATCH] D134354: [AMDGPU][GlobalISel] Support mad/fma_mix selection

[Pierre van Houtryve via Phabricator via llvm-commits]

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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 legalizer changes
were needed which have a wide impact across codegen.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D134354

Files:
  llvm/lib/Target/AMDGPU/AMDGPUGISel.td
  llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
  llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.h
  llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
  llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
  llvm/lib/Target/AMDGPU/SIInstructions.td
  llvm/lib/Target/AMDGPU/VOP3PInstructions.td
  llvm/test/CodeGen/AMDGPU/GlobalISel/mad-mix-hi.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/mad-mix-lo.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/mad-mix.ll
  llvm/utils/TableGen/GlobalISelEmitter.cpp

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