[PATCH] D32605: Recognize CTLZ builtin

[Joerg Sonnenberger via Phabricator via llvm-commits]

joerg added a comment.

In https://reviews.llvm.org/D32605#755237, @evstupac wrote:

> In https://reviews.llvm.org/D32605#755223, @joerg wrote:
>
> > Can you check the countable part in one of the cases? Otherwise it looks good.
>
>
> If I get yuo right, "ctlz_and_other" checks conversion to countable loop and that CPUs that not support ctlz will not insert it in this case.


I mean: it doesn't translate the loop to use ctlz, but the comment suggests that it still transforms the loop into something better understood. But it doesn't test that part?


Repository:
  rL LLVM

https://reviews.llvm.org/D32605