public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug c/40454]  New: GCC 4.4.0 vs 3.4.0 - PNGCrush is about 20% slower when compiled with GCC 4.4.0
@ 2009-06-15 23:36 ami_stuff at o2 dot pl
  2009-06-18 11:28 ` [Bug c/40454] " ami_stuff at o2 dot pl
                   ` (19 more replies)
  0 siblings, 20 replies; 24+ messages in thread
From: ami_stuff at o2 dot pl @ 2009-06-15 23:36 UTC (permalink / raw)
  To: gcc-bugs

Hi,

I notice that PNGCrush compiled with GCC 4.4.0 (release) is about 20% slower
compared to GCC 3.4.0 build. (Amiga 68060@50MHz). 

CFLAGS = -I. -DNO_FSEEKO -O2 -fomit-frame-pointer -Wall -m68060 -s


PNGCrush test.png out.png


Here are the results:

GCC 3.4.0 build:

CPU time used = 267.340 seconds (decoding 16.940,
encoding 247.800, other 2.600 seconds)

GCC 4.4.0 build:

CPU time used = 328.360 seconds (decoding 16.800,
encoding 309.260, other 2.300 seconds) 


Maybe someone with m68k Debian/PPC/x86 can compile PNGCrush with GCC 3.4.0 and
GCC 4.4.0, so we will know if this regression happens there too?


Here is a link to the source code (I used PNGCrush 1.6.15 for test):

http://sourceforge.net/project/showfiles.php?group_id=1689&package_id=1641


Here is a link to PNG image:

http://www.filejumbo.com/Download/D8F7981723E5F07C/


Regards


-- 
           Summary: GCC 4.4.0 vs 3.4.0 - PNGCrush is about 20% slower when
                    compiled with GCC 4.4.0
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ami_stuff at o2 dot pl
  GCC host triplet: i686-cygwin
GCC target triplet: m68k-amigaos


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40454


^ permalink raw reply	[flat|nested] 24+ messages in thread
[parent not found: <bug-40454-4@http.gcc.gnu.org/bugzilla/>]
end of thread, other threads:[~2011-04-16 10:46 UTC | newest]

Thread overview: 24+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-06-15 23:36 [Bug c/40454] New: GCC 4.4.0 vs 3.4.0 - PNGCrush is about 20% slower when compiled with GCC 4.4.0 ami_stuff at o2 dot pl
2009-06-18 11:28 ` [Bug c/40454] " ami_stuff at o2 dot pl
2009-08-12 12:10 ` ami_stuff at o2 dot pl
2009-08-16  1:28 ` ami_stuff at o2 dot pl
2009-08-16 14:03 ` ami_stuff at o2 dot pl
2009-08-17  8:42 ` bonzini at gnu dot org
2009-08-17  9:21 ` ami_stuff at o2 dot pl
2009-08-17  9:21 ` ami_stuff at o2 dot pl
2009-08-17  9:22 ` ami_stuff at o2 dot pl
2009-08-17  9:23 ` ami_stuff at o2 dot pl
2009-08-17  9:23 ` ami_stuff at o2 dot pl
2009-08-17  9:26 ` ami_stuff at o2 dot pl
2009-08-17 13:30 ` [Bug c/40454] GCC 4.4.0 vs 3.4.0 - at -O3, " bonzini at gnu dot org
2009-08-17 15:17 ` ami_stuff at o2 dot pl
2009-09-03  7:27 ` [Bug target/40454] [4.4 regression] zlib is about 20% slower when compiled with GCC 4.4.1 bonzini at gnu dot org
2009-09-07 19:22 ` ami_stuff at o2 dot pl
2009-09-10 12:58 ` ami_stuff at o2 dot pl
2009-09-20 12:16 ` rguenth at gcc dot gnu dot org
2009-10-15 12:56 ` jakub at gcc dot gnu dot org
2010-01-21 13:19 ` jakub at gcc dot gnu dot org
2010-04-30  9:01 ` jakub at gcc dot gnu dot org
     [not found] <bug-40454-4@http.gcc.gnu.org/bugzilla/>
2010-10-01 12:00 ` jakub at gcc dot gnu.org
2011-01-31 21:56 ` t.artem at mailcity dot com
2011-04-16 10:46 ` jakub at gcc dot gnu.org

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).