[PATCH] D103144: [X86][Costmodel] Load/store v2i16 VF=2 interleaving costs

Roman Lebedev via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed May 26 09:52:53 PDT 2021


lebedev.ri added inline comments.


================
Comment at: llvm/lib/Target/X86/X86TargetTransformInfo.cpp:4798-4799
   // Factor (stride) and VectorType=VFxiN.
   // The Cost accounts only for the shuffle sequence;
   // The cost of the loads/stores is accounted for separately.
   //
----------------
> In your analysis, don't you need to account for the load/stores as well? Although in these cases they don't affect the numbers: https://llvm.godbolt.org/z/4xeEf619Y

I'm following this comment, only measuring the shuffle sequence, ignoring loads/stores.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D103144/new/

https://reviews.llvm.org/D103144



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