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Date: Mon, 18 Sep 2006 13:37:00 -0000
Subject: [Bug tree-optimization/29128]  New: [4.2 Regression] ICE: in move_block_after_check, at haifa-sched.c:4337
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From: "tbm at cyrius dot com" <gcc-bugzilla@gcc.gnu.org>
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I get the following on ia64, but not on e.g. x86_64.

tbm@coconut0:~$ /usr/lib/gcc-snapshot/bin/gcc -c -O2 erlang-beam_emu.c
erlang-beam_emu.c: In function 'process_main':
erlang-beam_emu.c:28: internal compiler error: in move_block_after_check, at
haifa-sched.c:4337
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
For Debian GNU/Linux specific bug reporting instructions,
see <URL:file:///usr/share/doc/gcc-4.1/README.Bugs>.
tbm@coconut0:~$ /usr/lib/gcc-snapshot/bin/gcc -c -O1 erlang-beam_emu.c
tbm@coconut0:~$ gcc-4.1 -c -O2 erlang-beam_emu.c
tbm@coconut0:~$
tbm@coconut0:~$ cat erlang-beam_emu.c
typedef unsigned long Eterm;
process_main (void)
{
  register Eterm x0;
  register Eterm *reg = ((void *) 0);
  register Eterm *I = ((void *) 0);
  static void *opcodes[] = {
      &&lb_allocate_heap_zero_III,
      &&lb_allocate_init_tIy, &&lb_allocate_zero_tt
  };
lb_allocate_heap_III:{
    Eterm *next;
    goto *(next);
  }
lb_allocate_heap_zero_III:{
  }
lb_allocate_init_tIy:{
  }
lb_allocate_zero_tt:{
    Eterm *next;
    {
      Eterm *tmp_ptr = ((Eterm *) (((x0)) - 0x1));
      (*(Eterm *) (((unsigned char *) reg) + (I[(0) + 1]))) = ((tmp_ptr)[0]);
      x0 = ((tmp_ptr)[1]);
    }
    goto *(next);
  }
}


-- 
           Summary: [4.2 Regression] ICE: in move_block_after_check, at
                    haifa-sched.c:4337
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tbm at cyrius dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29128