[PATCH] D32752: AMDGPU: Make some packed shuffles free

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng.

VOP3P instructions can encode access to either
half of the register.


https://reviews.llvm.org/D32752

Files:
  lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
  lib/Target/AMDGPU/AMDGPUTargetTransformInfo.h
  test/Analysis/CostModel/AMDGPU/extractelement.ll
  test/Analysis/CostModel/AMDGPU/insertelement.ll
  test/Analysis/CostModel/AMDGPU/shufflevector.ll

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