[PATCH] D64005: AMDGPU: GlobalISel: Handle 16-bit SALU min/max

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: aemerson.
Herald added subscribers: Petar.Avramovic, t-tye, tpr, dstuttard, kristof.beyls, rovka, yaxunl, nhaehnle, wdng, jvesely, kzhuravl.
arsenm added a parent revision: D63969: GlobalISel: Try to propagate the register bank in LegalizerHelper.

This needs to be extended to s32, and expanded into cmp+select.  This
is relying on the fact that widenScalar happens to leave the
instruction in place, but this isn't a guaranteed property of
LegalizerHelper.


https://reviews.llvm.org/D64005

Files:
  lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
  test/CodeGen/AMDGPU/GlobalISel/regbankselect-smax.mir
  test/CodeGen/AMDGPU/GlobalISel/regbankselect-smin.mir
  test/CodeGen/AMDGPU/GlobalISel/regbankselect-umax.mir
  test/CodeGen/AMDGPU/GlobalISel/regbankselect-umin.mir

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