ICE with -O2 -march=pentiumpro

[Arvind Sankar <arvinds at mit dot edu>]

The attached source (culled from a gimp plugin) produces an ICE with
-O2 -march=pentiumpro
-On for n <= 1 is ok, as is -march=pentium.

btw, if I specify -march=<bad> where bad is not a valid arch, the ICE still
happens after cc1 tells me that bad is not a valid value, while not specifying
any arch (the default is pentium) works. Seems to be a bug somewhere in option
processing as well...

System is egcs-19990328, i686-pc-linux-gnu, glibc 2.1
Compiler output:
1.i: In function `p_frames_to_multilayer':
1.i:36: Could not split insn
(insn 104 19 32 (set (reg/v:SI 1 %edx)
        (if_then_else:SI (ge:SI (reg/v:SI 0 %eax)
                (mem/s:SI (plus:SI (reg:SI 2 %ecx)
                        (const_int 4)) 2))
            (reg/v:SI 1 %edx)
            (mem/s:SI (plus:SI (mem/f:SI (plus:SI (reg:SI 6 %ebp)
                            (const_int 8)) 0)
                    (const_int 4)) 2))) 367 {movsicc+2} (insn_list 124 (nil))
    (expr_list:REG_DEAD (reg/v:SI 0 %eax)
        (expr_list:REG_DEAD (reg:SI 2 %ecx)
            (nil))))
../../gcc/toplev.c:1453: Internal compiler error in function fatal_insn
Please submit a full bug report to `egcs-bugs@egcs.cygnus.com'.
See <URL:http://egcs.cygnus.com/faq.html#bugreport> for details.


-- arvind
typedef struct t_anim_info {
   char        *new_filename;
   long         first_frame_nr; 
} t_anim_info;
static int
p_frames_to_multilayer(t_anim_info *ainfo_ptr,
                      long range_from, long range_to)
{
  long    l_cur_frame_nr;
  long    l_step, l_begin, l_end;
  int  l_tmp_image_id;
  int  l_new_image_id;
  if(range_from > range_to)
  {
    l_step  = -1;      
    if(range_to < ainfo_ptr->first_frame_nr)
    { l_begin = ainfo_ptr->first_frame_nr;
    }
  }
  else
  {
    l_step  = 1;       
  }
  l_cur_frame_nr = l_begin;
  while(1)
  {
    if(ainfo_ptr->new_filename == ((void *)0) )
       return;
    if(l_tmp_image_id < 0)
       return;
    gimp_image_delete(l_tmp_image_id);
    if(l_cur_frame_nr == l_end)
       break;
    l_cur_frame_nr += l_step;
  }
}