[PATCH] D128591: Transforms: refactor pow(x, n) expansion where n is a constant integer value

Tue Jul 19 08:31:15 PDT 2022

spatel added a comment.

In D128591#3662752 <https://reviews.llvm.org/D128591#3662752>, @eaeltsin wrote:

> BTW, this is not about `-Ofast` - the problem reproduces with `-O1` - https://gcc.godbolt.org/z/6barovn81

Ah, that's definitely a bug. We can't convert pow to powi without some kind of FMF. I thought the transform was still guarded by 'afn', but I see now that there are non-fast tests that changed too.

Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D128591/new/

https://reviews.llvm.org/D128591