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From: "ian at airs dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/22563] [3.4/4.0/4.1/4.2 Regression] performance regression for gcc newer than 2.95
Date: Thu, 16 Feb 2006 02:08:00 -0000 [thread overview]
Message-ID: <20060216020847.24579.qmail@sourceware.org> (raw)
In-Reply-To: <bug-22563-10914@http.gcc.gnu.org/bugzilla/>
------- Comment #9 from ian at airs dot com 2006-02-16 02:08 -------
FYI, this code looks OK to me on mainline, entering the loop at .L18:
.L29:
andl $-16, %edx
cmpb $80, %dl
jne .L27
subl $1, %ecx
je .L28
.L18:
movl $86, %edx
movl %edx, %eax
andl $7, %eax
cmpb $6, %al
movb $86, b_rec
je .L29
.L27:
call abort
.L28:
Still looks kind of sloppy in 4.1, though.
I haven't tried to figure out what fixed it on mainline.
--
ian at airs dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ian at airs dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22563
next prev parent reply other threads:[~2006-02-16 2:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-22563-10914@http.gcc.gnu.org/bugzilla/>
2005-10-27 0:20 ` [Bug rtl-optimization/22563] [3.4/4.0/4.1 " pinskia at gcc dot gnu dot org
2005-10-31 4:12 ` mmitchel at gcc dot gnu dot org
2005-11-03 22:54 ` hubicka at gcc dot gnu dot org
2006-02-16 2:08 ` ian at airs dot com [this message]
2006-02-24 0:26 ` [Bug rtl-optimization/22563] [3.4/4.0/4.1/4.2 " mmitchel at gcc dot gnu dot org
2006-04-06 1:33 ` pinskia at gcc dot gnu dot org
2006-04-06 2:46 ` ian at airs dot com
2006-05-09 11:59 ` [Bug rtl-optimization/22563] [4.0/4.1/4.2 " hubicka at gcc dot gnu dot org
2006-05-14 15:48 ` sayle at gcc dot gnu dot org
2006-05-14 19:03 ` [Bug rtl-optimization/22563] [4.0/4.1 " pinskia at gcc dot gnu dot org
2006-05-15 4:43 ` sayle at gcc dot gnu dot org
2006-05-15 16:55 ` [Bug rtl-optimization/22563] [4.0 " pinskia at gcc dot gnu dot org
2006-05-16 1:17 ` sayle at gcc dot gnu dot org
2007-02-03 15:33 ` gdr at gcc dot gnu dot org
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