[PATCH] D55163: AMDGPU: Add optimization patterns to combine fp32->fp16 conversions

[Rhys Perry via Phabricator via llvm-commits]

pendingchaos created this revision.
pendingchaos added reviewers: arsenm, tstellar, alex-t.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, jvesely, kzhuravl.

This has a build_vector (or equivalent) of the low or high words of a
cvt_pkrtz_f16_f32 be selected to a single v_cvt_pkrtz_f16_f32.


Repository:
  rL LLVM

https://reviews.llvm.org/D55163

Files:
  lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
  lib/Target/AMDGPU/SIInstrInfo.td
  lib/Target/AMDGPU/SIInstructions.td
  test/CodeGen/AMDGPU/cvt_pkrtz_f16_f32_combine.ll

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