[Bug c/40910] New: -04 -fsee libgcc2.c

[Bug c/40910] New: -04 -fsee libgcc2.c

[freebse at live dot jp]

Computer Environment
OS:FreeBSD 8.0 Beta 2
CPU:Intel Pentium 4 3.06GHz(HT Enabled)
Mem:1.5GB(Memtest86+ Passed)

Situation
Installed from ports
GCC 4.4.1 Recomplie from GCC 4.4.1

Compile flag
/*
CFLAGS= -fmudflapir -fsel-sched-pipelining-outer-loops -fsel-sched-pipelining
-funsafe-loop-optimizations -fgcse-las -ftracer -O4 -pipe -mtune=pentium4
-fno-strict-aliasing -mmmx -msse -msse2 -mfpmath=both -ffast-math -fforce-addr
-funroll-loops -frerun-loop-opt -frounding-math -fbranch-target-load-optimize2 
-freciprocal-math -fassociative-math -fmodulo-sched -fira-coalesce -fsee
*/

Result
libgcc2.c In Function '__divdi3':
libgcc2.c:1098:Internal compile error: Segment fault: 11


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           Summary: -04 -fsee libgcc2.c
           Product: gcc
           Version: 4.4.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: freebse at live dot jp
 GCC build triplet: 20090721


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40910

[Bug c/40910] -04 -fsee libgcc2.c

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2009-07-30 10:22 -------
Don't use -fsee.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40910

[Bug c/40910] -04 -fsee libgcc2.c

[manu at gcc dot gnu dot org]

------- Comment #2 from manu at gcc dot gnu dot org  2009-07-30 11:34 -------
Perhaps it would be better just to remove it in the next GCC 4.4 release (I
guess it has been fixed/removed in GCC 4.5). Telling people not to use it after
they discover it is broken is a bit useless.


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manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |manu at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40910

[Bug c/40910] -04 -fsee libgcc2.c

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2009-07-30 16:07 -------
-fsee was removed on the trunk so closing as won't fix.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WONTFIX
   Target Milestone|---                         |4.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40910

[Bug c/40910] -04 -fsee libgcc2.c

[steven at gcc dot gnu dot org]

------- Comment #4 from steven at gcc dot gnu dot org  2009-07-30 16:36 -------
And -O4 doesn't exist, FWIW. 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40910

[Bug c/40910] -04 -fsee libgcc2.c

[pinskia at gcc dot gnu dot org]

------- Comment #5 from pinskia at gcc dot gnu dot org  2009-07-30 16:55 -------
(In reply to comment #4)
> And -O4 doesn't exist, FWIW. 

well it does but it is the same as -O3.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40910

[Bug c/40910] -04 -fsee libgcc2.c

[freebse at live dot jp]

------- Comment #6 from freebse at live dot jp  2009-08-01 07:15 -------
Comment, thanks a lot of for everybody.
Indeed -O4 option doesn't exist.
-O4 described investigated by Google.

And...
sorry, I am not good at writing English.
Therefore, sentences might be a little strange.

It expects it of GCC 4.5.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40910