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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/67628] [tree-optimization] (a && b) && c shows better codegen than a && (b && c)
Date: Fri, 18 Sep 2015 15:00:00 -0000	[thread overview]
Message-ID: <bug-67628-4-A29z6hXIBB@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-67628-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67628

--- Comment #2 from ktkachov at gcc dot gnu.org ---
(In reply to Andrew Pinski from comment #1)
> This is due to the fold-const.c optimization which should not be there any
> more. You need to do benchmarking on x86 also if you remove it. 
> 

could you elaborate what optimization is that?
Is it a matter of fold-const.c or match.pd canonicalizing the expression in
some way?


  parent reply	other threads:[~2015-09-18 15:00 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-18 14:32 [Bug tree-optimization/67628] New: " ktkachov at gcc dot gnu.org
2015-09-18 14:48 ` [Bug tree-optimization/67628] " pinskia at gcc dot gnu.org
2015-09-18 15:00 ` ktkachov at gcc dot gnu.org [this message]
2015-09-18 15:10 ` pinskia at gcc dot gnu.org
2015-09-21 14:23 ` ktkachov at gcc dot gnu.org
2021-06-07  7:30 ` pinskia at gcc dot gnu.org
2021-07-20  6:50 ` pinskia at gcc dot gnu.org
2023-09-03  3:29 ` pinskia at gcc dot gnu.org

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