1  /* PR tree-optimization/50078 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2" } */
       4  
       5  unsigned nonvolvar[2];
       6  
       7  void
       8  test (int arg)
       9  {
      10    unsigned v = *(volatile unsigned *) (&nonvolvar[arg]);
      11    *(volatile unsigned *) (&nonvolvar[arg]) = v;
      12  }
      13  
      14  /* { dg-final { scan-assembler-times "movl\[^\n\r\]*nonvolvar" 2 { target { { i?86-*-* x86_64-*-* } && nonpic } } } } */