1  /* { dg-do compile } */
       2  /* { dg-options "isa>=2 -mabi=32" } */
       3  /* { dg-skip-if "code quality test" { *-*-* } { "-O0" } { "" } } */
       4  /* { dg-final { scan-assembler "\taddiu\t" } } */
       5  /* { dg-final { scan-assembler-not "\tsubu" } } */
       6  
       7  NOMIPS16 unsigned long
       8  f(unsigned long *p)
       9  {
      10    return __sync_fetch_and_sub (p, 5);
      11  }