[PATCH] D49306: [SLC] Simplify pow(x, 0.25) to sqrt(sqrt(x))
Evandro Menezes via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Jul 31 12:57:06 PDT 2018
evandro added a comment.
In https://reviews.llvm.org/D49306#1182662, @spatel wrote:
> Why is this the right IR canonicalization?
It seems to be interesting on targets that have a good performing instruction to calculate `sqrt()`. I expanded testing on targets with a slow performing instruction for `sqrt()` and the results were not so promising though.
https://reviews.llvm.org/D49306
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