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* [Bug rtl-optimization/21202] Extra register moves generated with long long
[not found] <bug-21202-1101@http.gcc.gnu.org/bugzilla/>
@ 2006-02-16 1:58 ` ian at airs dot com
2006-07-17 9:09 ` vda dot linux at googlemail dot com
2007-07-11 19:20 ` ubizjak at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: ian at airs dot com @ 2006-02-16 1:58 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from ian at airs dot com 2006-02-16 01:58 -------
Just a note. My implementation of RTH's subreg lowering pass gives me this at
-O3:
f:
pushl %ebp
movl w, %eax
movl %esp, %ebp
movl w+4, %edx
popl %ebp
#APP
bswapl %eax ; bswapl %edx
#NO_APP
movl %edx, w
movl %eax, w+4
ret
With -momit-leaf-frame-pointer I get this:
f:
movl w, %eax
movl w+4, %edx
#APP
bswapl %eax ; bswapl %edx
#NO_APP
movl %edx, w
movl %eax, w+4
ret
which I suspect is optimal.
--
ian at airs dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ian at airs dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21202
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/21202] Extra register moves generated with long long
[not found] <bug-21202-1101@http.gcc.gnu.org/bugzilla/>
2006-02-16 1:58 ` [Bug rtl-optimization/21202] Extra register moves generated with long long ian at airs dot com
@ 2006-07-17 9:09 ` vda dot linux at googlemail dot com
2007-07-11 19:20 ` ubizjak at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: vda dot linux at googlemail dot com @ 2006-07-17 9:09 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from vda dot linux at googlemail dot com 2006-07-17 09:09 -------
Wow, this looks nice, good job! Thanks!
--
vda dot linux at googlemail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |vda dot linux at googlemail
| |dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21202
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/21202] Extra register moves generated with long long
[not found] <bug-21202-1101@http.gcc.gnu.org/bugzilla/>
2006-02-16 1:58 ` [Bug rtl-optimization/21202] Extra register moves generated with long long ian at airs dot com
2006-07-17 9:09 ` vda dot linux at googlemail dot com
@ 2007-07-11 19:20 ` ubizjak at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: ubizjak at gmail dot com @ 2007-07-11 19:20 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from ubizjak at gmail dot com 2007-07-11 19:20 -------
Fixed in 4.3.0.
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21202
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/21202] Extra register moves generated with long long
2005-04-25 7:32 [Bug rtl-optimization/21202] New: Extra register moves generated vda at port dot imtp dot ilyichevsk dot odessa dot ua
@ 2005-04-25 12:53 ` pinskia at gcc dot gnu dot org
0 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-04-25 12:53 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-04-25 12:53 -------
Confirmed, this is a register allocator problem with long longs.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Keywords| |missed-optimization, ra
Last reconfirmed|0000-00-00 00:00:00 |2005-04-25 12:53:11
date| |
Summary|Extra register moves |Extra register moves
|generated |generated with long long
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21202
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2007-07-11 19:20 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <bug-21202-1101@http.gcc.gnu.org/bugzilla/>
2006-02-16 1:58 ` [Bug rtl-optimization/21202] Extra register moves generated with long long ian at airs dot com
2006-07-17 9:09 ` vda dot linux at googlemail dot com
2007-07-11 19:20 ` ubizjak at gmail dot com
2005-04-25 7:32 [Bug rtl-optimization/21202] New: Extra register moves generated vda at port dot imtp dot ilyichevsk dot odessa dot ua
2005-04-25 12:53 ` [Bug rtl-optimization/21202] Extra register moves generated with long long pinskia at gcc dot gnu dot org
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