[PATCH] D61434: AMDGPU: Select VOP3 form of sub

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: rampitec.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, jvesely, kzhuravl.

The VOP3 form should always be the preferred selection form to be
shrunk later.

      

The r600 sub test needs to be split out because it asserts on the
arguments in the new test during the calling convention lowering.


https://reviews.llvm.org/D61434

Files:
  lib/Target/AMDGPU/VOP2Instructions.td
  test/CodeGen/AMDGPU/r600.sub.ll
  test/CodeGen/AMDGPU/sub.ll

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