// PR optimization/4994// This testcase ICEd because movsi was not supporting direct// mmx -> mmx register moves.// { dg-do compile }// { dg-options "-O2" }// { dg-options "-fno-exceptions -O2 -mmmx -fPIC" { target { { i?86-*-* x86_64-*-* } && ilp32 }  } }struct A {  unsigned a0;  bool a1 () { return !--a0; }  void a2 ();};struct B{  B ();  B (const B &);  ~B();  B &operator= (const B &);  B b0 (unsigned long x, int y = 0, int z = 10) const;private:  A *b1;  static A *b2;};inline B::~B(){  if (b1->a1 () && b1 == b2)    b1->a2();}struct C{  C *c0;};struct D{  C *d0;  D ();  D (const D &c0) {}  D &operator++ () {    C *x = d0; C *y = x->c0;    while (x == y->c0)      x = y;    d0 = x;    return *this;  }};B foo (const char *x, const B &y);void bar (void){  B *y = 0;  B z;  for (unsigned long l = 0; l < 2147483647L * 2UL + 1; l++)    {      z = y->b0 (l);      *y = foo ("data", z);    }  D d;  ++d;}