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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/32667] block copy with exact overlap is expanded as
 memcpy
Date: Thu, 23 Nov 2023 08:08:58 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D32667

--- Comment #33 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 23 Nov 2023, fw at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D32667
>=20
> --- Comment #32 from Florian Weimer <fw at gcc dot gnu.org> ---
> There's this in standards.texi:
>=20
> Most of the compiler support routines used by GCC are present in
> @file{libgcc}, but there are a few exceptions.  GCC requires the
> freestanding environment provide @code{memcpy}, @code{memmove},
> @code{memset} and @code{memcmp}.
> Finally, if @code{__builtin_trap} is used, and the target does
> not implement the @code{trap} pattern, then GCC emits a call
> to @code{abort}.
>=20
> Maybe that would be a place to mention this issue, too?

Will add.=