[Bug tree-optimization/18792] ICE with -O1 -ftree-loop-linear on small test case

[fjahanian at apple dot com]

------- Additional Comments From fjahanian at apple dot com  2004-12-07 23:04 
-------
I agree that bug is before linear loop xform. Make a slight, none-cfg change to 
the test case and
loop_nbr come out different (and sequential in the nesting). Somehow, changing 
the first loop
condition makes a big difference!

void put_atoms_in_triclinic_unitcell(int i, float x[1][3])
{
  int d;

      while (i < 0)
           for (d=0; d<=3; d++)
              x[i][d] = 0;

      while (x[i][3] >= 0)
           for (d=0; d<=3; d++)
              x[i][d] = 0;

}



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18792