[Bug target/94833] vec_first_match_index does not function as described in its description

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94833

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Carl Love <carll@gcc.gnu.org>:

https://gcc.gnu.org/g:a47259fa7737ff6d4a7def074fb30bc7baef2f86

commit r9-8659-ga47259fa7737ff6d4a7def074fb30bc7baef2f86
Author: Carl Love <cel@us.ibm.com>
Date:   Wed Apr 29 10:23:11 2020 -0500

    pr94833, fix vec_first_match_index for nulls

    Backported patch from mainline.  Updated ChangeLog format
            commit 24f68831d25bad739a6fe167a58b5b4c0c3cbf9a
            Author: Carl Love <cel@us.ibm.com>
            Date:   Wed Apr 29 10:23:11 2020 -0500

    2020-04-30  Carl Love  <cel@us.ibm.com>

    gcc/
            PR target/94833
            * config/rs6000/vsx.md (define_expand): Fix instruction generation
for
            first_match_index_<mode>.

    gcc/testsuite/
            PR target/94833
            * gcc.target/powerpc/builtins-8-p9-runnable.c (main): Add
            additional test cases with zero vector elements.