[Bug middle-end/32667] block copy with exact overlap is expanded as memcpy

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=32667

--- Comment #34 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:7758cb4b53e8a33642709402ce582f769eb9fd18

commit r14-5772-g7758cb4b53e8a33642709402ce582f769eb9fd18
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Nov 23 08:54:56 2023 +0100

    middle-end/32667 - document cpymem and memcpy exact overlap requirement

    The following amends the cpymem documentation to mention that exact
    overlap needs to be handled gracefully, also noting that the target
    runtime is expected to behave the same way where -ffreestanding
    docs mention the set of routines required.

            PR middle-end/32667
            * doc/md.texi (cpymem): Document that exact overlap of source
            and destination needs to work.
            * doc/standards.texi (ffreestanding): Mention memcpy is required
            to handle the exact overlap case.