strength-reduce bug in gcc-ss-20000814 (and earlier)

["Thomas R. Truscott" <trt at cs dot duke dot edu>]

This program calls abort when compiled -O2 or "-O -fstrength-reduce"
with 200000824, and several earlier versions, for i686-pc-linux.
(I've no clue why.)  This was distilled from a much larger chunk of code.

Tom Truscott
============

int x[] = { 0, 1 };

int
main ()
{
  int i, f;

  f = -1;
  for (i = 0; i < 2 && f < 0; i++)
  {
    if (x[i] != 0)
      f = i;
  }
  if (f < 0)
    abort ();

  return 0;
}