#3696 gcc-torture-execute-pr51466 fails for mos6502-stack-auto

[Gabriele Gorla]

gcc-torture-execute-pr51466 fails for mos6502-stack auto.
The failure seems to be related to a more general issue of genPointerSet when the target is on the stack.

int
bar (int i)
{
  volatile int v[4];
  int *p;
  v[i] = 6;
  p = (int *) &v[i];
  *p = 8;
  return v[i];
}

the *p=8 actually stores the value in reverse endian 0x800

[Gabriele Gorla]

fixed with [r15278]