[Bug tree-optimization/94920] Failure to optimize abs pattern from arithmetic with selected operands based on comparisons with 0

[paul.hua.gm at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94920

Paul Hua <paul.hua.gm at gmail dot com> changed:

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--- Comment #5 from Paul Hua <paul.hua.gm at gmail dot com> ---
(In reply to CVS Commits from comment #3)
> The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:
> 
> https://gcc.gnu.org/g:0bc1566dec0cab9410723c96d2ef3280fdab8e8e
> 
> commit r13-1854-g0bc1566dec0cab9410723c96d2ef3280fdab8e8e
> Author: Jakub Jelinek <jakub@redhat.com>
> Date:   Wed Jul 27 12:02:12 2022 +0200
> 
>     testsuite: Add -Wno-psabi to pr94920 tests [PR94920]
>     
>     These tests fail on ia32, because we get -Wpsabi warnings.
>     Fixed by adding -Wno-psabi.  The pr94920.C test still fails the
>     ABS_EXPR scan-tree-dump though, I think we'll need to add vect
>     options and use vect_int effective target or something similar.

Yes, we should do. This also fails the ABS_EXPR scan-tree-dump on LoongArch.

>     
>     2022-07-27  Jakub Jelinek  <jakub@redhat.com>
>     
>             PR tree-optimization/94920
>             * g++.dg/pr94920.C: Add -Wno-psabi to dg-options.
>             * g++.dg/pr94920-1.C: Add dg-additional-options -Wno-psabi.