1  /* { dg-do compile } */
       2  /* { dg-require-effective-target arm_eabi } */
       3  /* { dg-options "-O2" } */
       4  /* { dg-final { scan-assembler-times "ldr\[\\t \]+\[^\n\]*,\[\\t \]*\\\[\[^\n\]*\\\]" 2 } } */
       5  /* { dg-final { scan-assembler-times "str\[\\t \]+\[^\n\]*,\[\\t \]*\\\[\[^\n\]*\\\]" 2 } } */
       6  /* { dg-final { scan-assembler-not "strb" } } */
       7  
       8  struct thing {
       9    unsigned a: 8;
      10    unsigned b: 8;
      11    unsigned c: 8;
      12    unsigned d: 8;
      13  };
      14  
      15  struct thing2 {
      16    volatile unsigned a: 8;
      17    volatile unsigned b: 8;
      18    volatile unsigned c: 8;
      19    volatile unsigned d: 8;
      20  };
      21  
      22  void test1(volatile struct thing *t)
      23  {
      24    t->a = 5;
      25  }
      26  
      27  void test2(struct thing2 *t)
      28  {
      29    t->a = 5;
      30  }