1  /* PR middle-end/39443 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2" } */
       4  /* { dg-final { scan-assembler-not "memcmp" } } */
       5  
       6  typedef __SIZE_TYPE__ size_t;
       7  
       8  extern int memcmp (const void *s1, const void *s2, size_t n)
       9    __attribute__ ((__nothrow__, __pure__));
      10  extern __typeof (memcmp) memcmp __asm__ ("memory_compare");
      11  
      12  int
      13  test (char *s, char *t, int cnt)
      14  {
      15    if (__builtin_expect (cnt, 0))
      16      return memcmp (s, t, cnt);
      17    return 0;
      18  }