[PATCH] D105347: [AMDGPU][GlobalISel] Legalization and selection of G_ROTL and G_ROTR

[Mateja Marjanovic via Phabricator via llvm-commits]

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Add implementation for the legalization and selection of G_ROTL and G_ROTR machine instructions.
They are very similar to funnel shift instructions, the only difference is funnel shifts have 3 operands,
whereas rotate instructions have two operands, the first being the register that is being rotated and
the second being the number of shifts.


https://reviews.llvm.org/D105347

Files:
  llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
  llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
  llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
  llvm/lib/Target/AMDGPU/VOP3Instructions.td
  llvm/test/CodeGen/AMDGPU/GlobalISel/rotate_pre_instselect.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/rotate_pre_legalization.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/rotate_pre_regbankselect.mir

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