[PATCH] D49273: [InstCombine] Expand the simplification of pow() into exp2()

[Evandro Menezes via Phabricator via llvm-commits]

evandro added a comment.

In D49273#1619819 <https://reviews.llvm.org/D49273#1619819>, @xbolva00 wrote:

> Oh right, we miss this for pow of two bases other than 2.0.
>
> Yeah, we need a direct fold.


Methinks that I got a patch working.  The only drawback is that there is no intrinsic `ldexp()`, which means that it's probably better to use `exp2()` for vector types.


Repository:
  rL LLVM

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https://reviews.llvm.org/D49273