[Bug middle-end/18628] [4.0 regression] miscompilation of switch statement in loop

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-23 
17:09 -------
I really doubt that his change did anything except maybe change the tree level.
Here is one which can most likely reproduced before his change:
int main (int i)
{
  int lsm_tmp1;
  int D1127;
  lsm_tmp1 = i;
L9:;
  switch (lsm_tmp1)
    { 
      case 0 ... 1: goto L10;
      case 2 ... 3: goto L3;
      case 5: goto L5;
      default : goto L9;
    }
L3:;
  i = lsm_tmp1;
  D1127 = 0;
  goto L7;
L5:;
  lsm_tmp1 = 4;
  goto L9;
L10:;
  i = lsm_tmp1;
  D1127 = 1;
L7:;
  return D1127;
}

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18628