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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/52171] memcmp/strcmp/strncmp can be optimized when the result is tested for [in]equality with 0
Date: Wed, 08 Feb 2012 14:38:00 -0000	[thread overview]
Message-ID: <bug-52171-4-mdIeOIkwdy@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-52171-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52171

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-02-08 14:37:24 UTC ---
For comparison against constants it might be worthwhile to still allow two
loads to improve the number of alignment cases we can handle.  Well, I'm not
sure we can expect anything more than 1-byte alignment for the most cases.


  parent reply	other threads:[~2012-02-08 14:38 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-08 12:38 [Bug tree-optimization/52171] New: " rguenth at gcc dot gnu.org
2012-02-08 13:06 ` [Bug tree-optimization/52171] " rguenth at gcc dot gnu.org
2012-02-08 13:50 ` jakub at gcc dot gnu.org
2012-02-08 14:38 ` rguenth at gcc dot gnu.org [this message]
2012-05-06  5:03 ` pinskia at gcc dot gnu.org
2012-05-07  9:25 ` rguenth at gcc dot gnu.org
2013-02-19 14:51 ` rguenth at gcc dot gnu.org
2013-02-19 15:05 ` jakub at gcc dot gnu.org
2022-05-24 13:32 ` cvs-commit at gcc dot gnu.org

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