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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/63900] memory constrains needlessly doing memory clobber
Date: Sun, 16 Nov 2014 02:19:00 -0000 [thread overview]
Message-ID: <bug-63900-4-9hmElNFeji@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-63900-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to David from comment #0)
> Change MYSIZE to 3 (or 12, 1000, 0xfffffff, etc) we see the value getting
> read from memory before calling printf, indicating the asm performed a full
> clobber (affecting buff2) instead of just clobbering buff as was intended.
So that is just an optimization anyways. So closing as invalid.
next prev parent reply other threads:[~2014-11-16 2:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-16 2:13 [Bug inline-asm/63900] New: " gccbugzilla at limegreensocks dot com
2014-11-16 2:19 ` pinskia at gcc dot gnu.org [this message]
2014-11-16 10:55 ` [Bug inline-asm/63900] " aph at redhat dot com
2014-11-16 19:04 ` segher at gcc dot gnu.org
2014-11-16 21:44 ` pinskia at gcc dot gnu.org
2014-11-16 23:05 ` gccbugzilla at limegreensocks dot com
2015-01-08 1:39 ` hp at gcc dot gnu.org
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