[PATCH] D12469: AMDGPU: Improve accuracy of instruction rates for VOPC

[Matt Arsenault via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: tstellarAMD.
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These were all using the default 32-bit VALU write class,
but the i64/f64 compares are half rate.
    
I'm not sure this is really correct, because they are still using
the write to VALU write class, even though they really write
to the SALU.

http://reviews.llvm.org/D12469

Files:
  lib/Target/AMDGPU/SIInstrInfo.td
  lib/Target/AMDGPU/SISchedule.td
  test/CodeGen/AMDGPU/llvm.AMDGPU.class.ll
  test/CodeGen/AMDGPU/valu-i1.ll

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