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

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

In D143787#4152348 <https://reviews.llvm.org/D143787#4152348>, @pengfei wrote:

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

By this point we've lost that info - its embedded in the isel tables but not much else - so you'll have to do it manually for the AVX1/AVX2 cases


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https://reviews.llvm.org/D143787