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* [Bug target/45483] gcc-4.4.3: probably wrong optimization options chosen by "-march=native"
[not found] <bug-45483-4@http.gcc.gnu.org/bugzilla/>
@ 2011-09-22 20:49 ` pacho at condmat1 dot ciencias.uniovi.es
2011-09-22 21:39 ` [Bug target/45483] gcc-4.4.3 and 4.5.3: " hjl.tools at gmail dot com
` (4 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: pacho at condmat1 dot ciencias.uniovi.es @ 2011-09-22 20:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45483
--- Comment #8 from Pacho Ramos <pacho at condmat1 dot ciencias.uniovi.es> 2011-09-22 20:47:04 UTC ---
It's still using generic in gcc-4.5, -march has moved from prescott to
pentium-m:
gcc-4.4: \_ /usr/libexec/gcc/i686-pc-linux-gnu/4.4.5/cc1 -quiet -
-D_FORTIFY_SOURCE=2 -march=prescott --param l1-cache-size=32 --param
l1-cache-line-size=64 --param l2-cache-size=2048 -mtune=generic -quiet
-dumpbase - -auxbase-strip /dev/null -o /tmp/ccpMToQG.s
gcc-4.5.3: \_ /usr/libexec/gcc/i686-pc-linux-gnu/4.5.3/cc1 -quiet -
-D_FORTIFY_SOURCE=2 -march=pentium-m --param l1-cache-size=32 --param
l1-cache-line-size=64 --param l2-cache-size=2048 -mtune=generic -quiet
-dumpbase - -auxbase-strip /dev/null -o /tmp/cc11MaKg.s
Should I try with gcc-4.6 to see if it uses something different than "generic"
for mtune (or march has changed again)?
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/45483] gcc-4.4.3 and 4.5.3: probably wrong optimization options chosen by "-march=native"
[not found] <bug-45483-4@http.gcc.gnu.org/bugzilla/>
2011-09-22 20:49 ` [Bug target/45483] gcc-4.4.3: probably wrong optimization options chosen by "-march=native" pacho at condmat1 dot ciencias.uniovi.es
@ 2011-09-22 21:39 ` hjl.tools at gmail dot com
2011-09-22 22:36 ` pacho at condmat1 dot ciencias.uniovi.es
` (3 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: hjl.tools at gmail dot com @ 2011-09-22 21:39 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45483
--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> 2011-09-22 21:08:09 UTC ---
(In reply to comment #8)
> Should I try with gcc-4.6 to see if it uses something different than "generic"
> for mtune (or march has changed again)?
Yes.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/45483] gcc-4.4.3 and 4.5.3: probably wrong optimization options chosen by "-march=native"
[not found] <bug-45483-4@http.gcc.gnu.org/bugzilla/>
2011-09-22 20:49 ` [Bug target/45483] gcc-4.4.3: probably wrong optimization options chosen by "-march=native" pacho at condmat1 dot ciencias.uniovi.es
2011-09-22 21:39 ` [Bug target/45483] gcc-4.4.3 and 4.5.3: " hjl.tools at gmail dot com
@ 2011-09-22 22:36 ` pacho at condmat1 dot ciencias.uniovi.es
2011-09-22 23:05 ` pacho at condmat1 dot ciencias.uniovi.es
` (2 subsequent siblings)
5 siblings, 0 replies; 6+ messages in thread
From: pacho at condmat1 dot ciencias.uniovi.es @ 2011-09-22 22:36 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45483
--- Comment #10 from Pacho Ramos <pacho at condmat1 dot ciencias.uniovi.es> 2011-09-22 22:33:20 UTC ---
New output:
\_ /usr/libexec/gcc/i686-pc-linux-gnu/4.6.1/cc1 -quiet - -D_FORTIFY_SOURCE=2
-march=pentium-m -mno-cx16 -mno-sahf -mno-movbe -mno-aes -mno-pclmul
-mno-popcnt -mno-abm -mno-lwp -mno-fma -mno-fma4 -mno-xop -mno-bmi -mno-tbm
-mno-avx -mno-sse4.2 -mno-sse4.1 --param l1-cache-size=32 --param
l1-cache-line-size=64 --param l2-cache-size=2048 -mtune=generic -quiet
-dumpbase - -auxbase-strip /dev/null -o /tmp/cc63ioaE.s
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/45483] gcc-4.4.3 and 4.5.3: probably wrong optimization options chosen by "-march=native"
[not found] <bug-45483-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2011-09-22 22:36 ` pacho at condmat1 dot ciencias.uniovi.es
@ 2011-09-22 23:05 ` pacho at condmat1 dot ciencias.uniovi.es
2011-09-24 15:54 ` hjl.tools at gmail dot com
2011-09-24 16:03 ` pacho at condmat1 dot ciencias.uniovi.es
5 siblings, 0 replies; 6+ messages in thread
From: pacho at condmat1 dot ciencias.uniovi.es @ 2011-09-22 23:05 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45483
--- Comment #11 from Pacho Ramos <pacho at condmat1 dot ciencias.uniovi.es> 2011-09-22 22:39:58 UTC ---
If I use "mtune=native" instead of "march", final gcc command is different:
/usr/libexec/gcc/i686-pc-linux-gnu/4.6.1/cc1 -quiet - -D_FORTIFY_SOURCE=2
--param l1-cache-size=32 --param l1-cache-line-size=64 --param
l2-cache-size=2048 -mtune=generic -quiet -dumpbase - -march=i686 -auxbase-strip
/dev/null -o /tmp/ccs2Uhin.s
Not sure if that is normal
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/45483] gcc-4.4.3 and 4.5.3: probably wrong optimization options chosen by "-march=native"
[not found] <bug-45483-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2011-09-22 23:05 ` pacho at condmat1 dot ciencias.uniovi.es
@ 2011-09-24 15:54 ` hjl.tools at gmail dot com
2011-09-24 16:03 ` pacho at condmat1 dot ciencias.uniovi.es
5 siblings, 0 replies; 6+ messages in thread
From: hjl.tools at gmail dot com @ 2011-09-24 15:54 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45483
--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> 2011-09-24 15:19:56 UTC ---
(In reply to comment #10)
> New output:
>
> \_ /usr/libexec/gcc/i686-pc-linux-gnu/4.6.1/cc1 -quiet - -D_FORTIFY_SOURCE=2
> -march=pentium-m -mno-cx16 -mno-sahf -mno-movbe -mno-aes -mno-pclmul
> -mno-popcnt -mno-abm -mno-lwp -mno-fma -mno-fma4 -mno-xop -mno-bmi -mno-tbm
> -mno-avx -mno-sse4.2 -mno-sse4.1 --param l1-cache-size=32 --param
> l1-cache-line-size=64 --param l2-cache-size=2048 -mtune=generic -quiet
> -dumpbase - -auxbase-strip /dev/null -o /tmp/cc63ioaE.s
It looks great.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug target/45483] gcc-4.4.3 and 4.5.3: probably wrong optimization options chosen by "-march=native"
[not found] <bug-45483-4@http.gcc.gnu.org/bugzilla/>
` (4 preceding siblings ...)
2011-09-24 15:54 ` hjl.tools at gmail dot com
@ 2011-09-24 16:03 ` pacho at condmat1 dot ciencias.uniovi.es
5 siblings, 0 replies; 6+ messages in thread
From: pacho at condmat1 dot ciencias.uniovi.es @ 2011-09-24 16:03 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45483
Pacho Ramos <pacho at condmat1 dot ciencias.uniovi.es> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #13 from Pacho Ramos <pacho at condmat1 dot ciencias.uniovi.es> 2011-09-24 15:40:17 UTC ---
OK, I guess I should close this one as looks like "generic" is the best option
for my processor
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-09-24 15:41 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-45483-4@http.gcc.gnu.org/bugzilla/>
2011-09-22 20:49 ` [Bug target/45483] gcc-4.4.3: probably wrong optimization options chosen by "-march=native" pacho at condmat1 dot ciencias.uniovi.es
2011-09-22 21:39 ` [Bug target/45483] gcc-4.4.3 and 4.5.3: " hjl.tools at gmail dot com
2011-09-22 22:36 ` pacho at condmat1 dot ciencias.uniovi.es
2011-09-22 23:05 ` pacho at condmat1 dot ciencias.uniovi.es
2011-09-24 15:54 ` hjl.tools at gmail dot com
2011-09-24 16:03 ` pacho at condmat1 dot ciencias.uniovi.es
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