[PATCH] D41940: [InstSimplify] Missed optimization in math expression: log10(pow(10.0, x)) == x, log2(pow(2.0, x)) == x

[Dmitry Venikov via Phabricator via llvm-commits]

Quolyk added a comment.

In D41940#1378402 <https://reviews.llvm.org/D41940#1378402>, @lebedev.ri wrote:

> LG unless others have more comments (@spatel ?)
>  You probably know this already, but there are some other low-hanging fruit here, e.g.
>  https://godbolt.org/z/Trdf_e
>  https://www.wolframalpha.com/input/?i=log2(x)+%2F+log2(10)+%3D+log10(x)


Thanks, I'll dive into it. Btw, `pow(2.0, x)` --> `exp2(x)` is already implemented, see https://godbolt.org/z/UADcWe.


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