[PATCH] D143787: [X86] Add new pass `X86FixupInstTuning` for fixing up machine-instruction selection.

[Phoebe Wang via Phabricator via llvm-commits]

pengfei added a comment.

I don't think there exists such an API. We don't record such information for each instruction.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D143787/new/

https://reviews.llvm.org/D143787