[PATCH] D95789: [SpeculateAroundPHIs] Avoid speculation on loop back edges

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

I will need to take another look, but i also have seen significant perf regressions due to SpeculateAroundPHIs.
I think a better/less controversial fix would be to move SpeculateAroundPHIs to the end of IR portion of codegen pipeline,
after last extension point.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D95789/new/

https://reviews.llvm.org/D95789