[PATCH] D62409: TTI: Improve default costs for addrspacecast

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: hfinkel.
Herald added subscribers: dmgreen, zzheng, tpr, nhaehnle, wdng, jvesely.

For some reason multiple places need to do this, and the variant the
loop unroller and inliner use was not handling it.

      

Also, introduce a new wrapper to be slightly more precise, since on
AMDGPU some addrspacecasts are free, but not no-ops.


https://reviews.llvm.org/D62409

Files:
  include/llvm/CodeGen/BasicTTIImpl.h
  include/llvm/CodeGen/TargetLowering.h
  test/Analysis/CostModel/AMDGPU/addrspacecast.ll
  test/Transforms/LoopUnroll/AMDGPU/unroll-cost-addrspacecast.ll

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