From: Michael Matz <matz@suse.de>
To: Jakub Jelinek <jakub@redhat.com>
Cc: Aaron Sawdey <acsawdey@linux.ibm.com>,
Richard Biener <richard.guenther@gmail.com>,
GCC Development <gcc@gcc.gnu.org>,
Joseph Myers <joseph@codesourcery.com>,
Jeff Law <law@redhat.com>,
Segher Boessenkool <segher@kernel.crashing.org>,
David Edelsohn <dje.gcc@gmail.com>,
Bill Schmidt <wschmidt@linux.ibm.com>
Subject: Re: Fixing inline expansion of overlapping memmove and non-overlapping memcpy
Date: Wed, 15 May 2019 14:47:00 -0000 [thread overview]
Message-ID: <alpine.LSU.2.21.1905151446280.8064@wotan.suse.de> (raw)
In-Reply-To: <20190515141106.GK19695@tucnak>
Hi,
On Wed, 15 May 2019, Jakub Jelinek wrote:
> Just one thing to note, our "memcpy" expectation is that either there is
> no overlap, or there is 100% overlap (src == dest), both all the current
> movmem == future cpymem expanders and all the supported library
> implementations do support that, though the latter just de-facto, it
> isn't a written guarantee.
Yes, I should have been more precise, complete overlap is always de-facto
supported as well.
Ciao,
Michael.
next prev parent reply other threads:[~2019-05-15 14:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-14 19:21 Aaron Sawdey
2019-05-15 12:23 ` Richard Biener
2019-05-15 13:24 ` Aaron Sawdey
2019-05-15 14:02 ` Michael Matz
2019-05-15 14:11 ` Jakub Jelinek
2019-05-15 14:47 ` Michael Matz [this message]
2019-05-15 16:24 ` Aaron Sawdey
2019-05-15 16:31 ` Jakub Jelinek
2019-05-15 17:59 ` Aaron Sawdey
2019-05-15 18:01 ` Jakub Jelinek
2019-05-15 18:03 ` Aaron Sawdey
2019-05-15 13:10 ` Michael Matz
2019-05-15 13:16 ` Aaron Sawdey
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