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From: "dmixm at marine dot febras dot ru" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/11180] [avr-gcc] Optimization decrease performance of struct assignment. Date: Sun, 09 Sep 2007 21:59:00 -0000 [thread overview] Message-ID: <20070909215902.12035.qmail@sourceware.org> (raw) In-Reply-To: <bug-11180-6291@http.gcc.gnu.org/bugzilla/> ------- Comment #12 from dmixm at marine dot febras dot ru 2007-09-09 21:59 ------- Andy Hutchinson wrote (comment #6) that addition a 'movdi' instruction improves the result. I have try to add a very simple 'movdi' (which split into 2 SImode instuctions). In result: -O0 --> 85 words, -O1,2,3,s --> 50 words. Version is 4.2.1 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11180
next prev parent reply other threads:[~2007-09-09 21:59 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <bug-11180-6291@http.gcc.gnu.org/bugzilla/> 2007-07-24 23:50 ` eweddington at cso dot atmel dot com 2007-07-27 1:24 ` dmixm at marine dot febras dot ru 2007-07-27 14:23 ` eweddington at cso dot atmel dot com 2007-09-09 21:59 ` dmixm at marine dot febras dot ru [this message] 2007-09-11 16:11 ` eweddington at cso dot atmel dot com 2007-09-16 3:22 ` dmixm at marine dot febras dot ru 2007-09-16 12:57 ` rask at gcc dot gnu dot org 2007-09-16 13:38 ` rask at gcc dot gnu dot org 2007-09-16 13:54 ` rask at gcc dot gnu dot org 2007-09-16 15:44 ` eweddington at cso dot atmel dot com 2007-09-16 17:30 ` rask at gcc dot gnu dot org 2007-09-17 2:32 ` eweddington at cso dot atmel dot com 2007-09-17 11:13 ` rask at gcc dot gnu dot org 2007-09-17 22:53 ` eweddington at cso dot atmel dot com 2007-09-18 7:14 ` rask at gcc dot gnu dot org 2007-09-18 19:06 ` eweddington at cso dot atmel dot com 2007-09-18 19:49 ` rask at gcc dot gnu dot org 2007-09-19 5:28 ` eweddington at cso dot atmel dot com 2007-09-19 17:58 ` eweddington at cso dot atmel dot com 2008-02-02 15:45 ` hutchinsonandy at aim dot com 2008-02-19 2:47 ` eric dot weddington at atmel dot com [not found] <bug-11180-4@http.gcc.gnu.org/bugzilla/> 2013-02-22 18:43 ` gjl at gcc dot gnu.org 2023-06-21 3:54 ` pinskia at gcc dot gnu.org 2003-07-06 1:24 [Bug optimization/11180] New: " pinskia at physics dot uc dot edu 2004-01-03 19:00 ` [Bug target/11180] " pinskia at gcc dot gnu dot org 2005-01-09 1:30 ` pinskia at gcc dot gnu dot org 2005-03-27 14:33 ` andrewhutchinson at cox dot net 2005-06-26 2:26 ` pinskia at gcc dot gnu dot org 2005-06-26 15:06 ` schlie at comcast dot net
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