[Bug tree-optimization/78257] missing memcmp optimization with constant arrays

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78257

--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Sebor <mse...@gcc.gnu.org>:

https://gcc.gnu.org/g:bb04901d14f7749eb949092fd3dfcb6ca1958701

commit r11-2742-gbb04901d14f7749eb949092fd3dfcb6ca1958701
Author: Martin Sebor <mse...@redhat.com>
Date:   Tue Aug 18 12:49:35 2020 -0600

    Fix PR tree-optimization/96670 - ICE on memchr with an empty initializer.

    gcc/ChangeLog:

            PR tree-optimization/96670
            PR middle-end/78257
            * gimple-fold.c (gimple_fold_builtin_memchr): Call
byte_representation
            to get it, not string_constant.

    gcc/testsuite/ChangeLog:

            PR tree-optimization/96670
            * gcc.dg/memchr-2.c: New test.
            * gcc.dg/memcmp-6.c: New test.