[Bug c/16827] New: gcc 3.5.0 20040715: internal compiler error while compiling kernel 2.6.8-rc2-bk5

[Bug c/16827] New: gcc 3.5.0 20040715: internal compiler error while compiling kernel 2.6.8-rc2-bk5

[trentalg at aston dot ac dot uk]

CC [M]  drivers/md/md.o
drivers/md/md.c: In function `super_1_sync':
drivers/md/md.c:903: internal compiler error: in set_level, at
tree-ssa-loop-im.c:460
Please submit a full bug report,
with preprocessed source if appropriate.

-- 
           Summary: gcc 3.5.0 20040715: internal compiler error while
                    compiling kernel 2.6.8-rc2-bk5
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: trentalg at aston dot ac dot uk
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16827

[Bug c/16827] gcc 3.5.0 20040715: internal compiler error while compiling kernel 2.6.8-rc2-bk5

[trentalg at aston dot ac dot uk]

------- Additional Comments From trentalg at aston dot ac dot uk  2004-07-30 03:12 -------
Created an attachment (id=6854)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=6854&action=view)
preprocessed source


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16827

[Bug tree-optimization/16827] [3.5 Regression] nternal compiler error while compiling kernel 2.6.8-rc2-bk5

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-07-30 04:47 -------
Confirmed, reduced to (which no longer looks like the orginal code but is still the same ICE):
extern unsigned short dev_roles[];
void super_1_sync(int *rdev2)
{
 int i;
 int max_dev = 0;

 for (i =0;i<20;i++)
  if (rdev2[i] > max_dev)
   max_dev = rdev2[i];

 for (i=0; i<max_dev;i++)
  dev_roles[max_dev] = 0xfffe;

}

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|c                           |tree-optimization
     Ever Confirmed|                            |1
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|0000-00-00 00:00:00         |2004-07-30 04:47:49
               date|                            |
            Summary|gcc 3.5.0 20040715: internal|[3.5 Regression] nternal
                   |compiler error while        |compiler error while
                   |compiling kernel 2.6.8-rc2- |compiling kernel 2.6.8-rc2-
                   |bk5                         |bk5
   Target Milestone|---                         |3.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16827

[Bug tree-optimization/16827] [3.5 Regression] nternal compiler error while compiling kernel 2.6.8-rc2-bk5

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-07-30 04:49 -------
: Search converges between 2004-07-09-trunk (#483) and 2004-07-12-trunk (#484).

Note a computer helped reducer could not get this code this far.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16827

[Bug tree-optimization/16827] [3.5 Regression] nternal compiler error while compiling kernel 2.6.8-rc2-bk5

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-07-30 04:50 -------
Also note that -O2 is only needed.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16827

[Bug tree-optimization/16827] [3.5 Regression] nternal compiler error while compiling kernel 2.6.8-rc2-bk5

[rakdver at gcc dot gnu dot org]

------- Additional Comments From rakdver at gcc dot gnu dot org  2004-07-30 11:49 -------
Does it still reproduce for you? It does not for me and I yesterday commited a
patch for problem in lim that caused the same ICE, so I suspect it is fixed.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16827

[Bug tree-optimization/16827] [3.5 Regression] nternal compiler error while compiling kernel 2.6.8-rc2-bk5

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-07-30 21:51 -------
This is fixed, will apply the testcase soon.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16827