1  /* PR rtl-optimization/63637 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2" } */
       4  
       5  int
       6  foo (void)
       7  {
       8    int a, b, c;
       9    asm ("# Magic instruction" : "=r" (a) : : "memory");
      10    asm ("# Magic instruction" : "=r" (b) : : "memory");
      11    asm ("# Magic instruction" : "=r" (c) : : "memory");
      12    return a + b + c;
      13  }
      14  
      15  /* { dg-final { scan-assembler-times "# Magic instruction" 3 } } */