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From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/40874] Function object abstraction penalty with inline functions.
Date: Tue, 28 Jul 2009 11:23:00 -0000	[thread overview]
Message-ID: <20090728112246.1998.qmail@sourceware.org> (raw)
In-Reply-To: <bug-40874-501@http.gcc.gnu.org/bugzilla/>



------- Comment #5 from rguenth at gcc dot gnu dot org  2009-07-28 11:22 -------
After early SRA we get

  f$x_8 = g;
  D.2142_6 = f$x_8;
  D.2141_7 = D.2142_6 (3);

which now misses a constant propagation of &g into the call which is why
inlining doesn't catch this opportunity.  Put one in and the abstraction
goes away.

Puting FRE into early optimizations also would get this.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40874


  parent reply	other threads:[~2009-07-28 11:23 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-07-27 15:06 [Bug c++/40874] New: Function object abstraction penalty dave at boost-consulting dot com
2009-07-27 15:36 ` [Bug tree-optimization/40874] " pinskia at gcc dot gnu dot org
2009-07-27 15:45 ` [Bug tree-optimization/40874] Function object abstraction penalty with inline functions pinskia at gcc dot gnu dot org
2009-07-27 16:26 ` dave at boost-consulting dot com
2009-07-27 17:57 ` paolo dot carlini at oracle dot com
2009-07-28 11:23 ` rguenth at gcc dot gnu dot org [this message]
2009-07-28 18:42 ` dave at boost-consulting dot com
2009-07-28 19:39 ` paolo dot carlini at oracle dot com
2009-07-28 21:33 ` jamborm at gcc dot gnu dot org
2009-07-29  8:06 ` rguenther at suse dot de
2009-07-29  8:06 ` rguenth at gcc dot gnu dot org
2009-07-29  8:09 ` hubicka at ucw dot cz
2009-07-29  8:12 ` rguenther at suse dot de
2009-07-29 10:17 ` jamborm at gcc dot gnu dot org
2009-07-29 10:57 ` rguenther at suse dot de
     [not found] <bug-40874-4@http.gcc.gnu.org/bugzilla/>
2011-05-23 14:51 ` rguenth at gcc dot gnu.org
2011-05-23 15:09 ` rguenth at gcc dot gnu.org

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