[PATCH] D100149: [AMDGPU][GlobalISel] Legalize and select G_SBFX and G_UBFX

[Brendon Cahoon via Phabricator via llvm-commits]

bcahoon updated this revision to Diff 337189.
bcahoon added a comment.

Updates based upon initial review. The code that expands G_SBFX/G_UBFX
instructions is moved to regbankselect.  This version also expands the 64-bit
vector version of the bitfield extract opcodes. For this, the expansion uses
shifts and masks to perform the 64-bit vector bitfield extract.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100149/new/

https://reviews.llvm.org/D100149

Files:
  llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
  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/AMDGPURegisterBankInfo.h
  llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-sbfx.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-ubfx.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-sbfx.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-ubfx.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-sbfx.mir
  llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-ubfx.mir

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