1  /* { dg-do compile } */
       2  /* { dg-options "-O1 -mmmx -funroll-loops -fvariable-expansion-in-unroller" } */
       3  
       4  typedef int __m64 __attribute__ ((__vector_size__ (8)));
       5  typedef int __v2si __attribute__ ((__vector_size__ (8)));
       6  
       7  static __inline __m64 __attribute__((__always_inline__))
       8  _mm_add_pi32 (__m64 __m1, __m64 __m2)
       9  {
      10    return (__m64) __builtin_ia32_paddd ((__v2si)__m1, (__v2si)__m2);
      11  }
      12  
      13  __m64
      14  simple_block_diff_up_mmx_4 (const int width, __m64 ref1)
      15  {
      16    __m64 sum;
      17    int count = width >>1;
      18    while (count--)
      19      sum = _mm_add_pi32 (sum, ref1);
      20    return sum;
      21  }