1  /* { dg-do run } */
       2  /* { dg-require-effective-target p8vector_hw } */
       3  /* { dg-options "-mdejagnu-cpu=power8 -O3" } */
       4  
       5  #include <altivec.h>
       6  void abort ();
       7  
       8  #define N 4096
       9  long long ca[N] __attribute__((aligned(16)));
      10  long long cb[N] __attribute__((aligned(16)));
      11  long long cc[N] __attribute__((aligned(16)));
      12  long long cd[N] __attribute__((aligned(16)));
      13  long long x;
      14  
      15  __attribute__((noinline)) void foo ()
      16  {
      17    int i;
      18    vector long long va, vb, vc, vd, tmp;
      19    volatile unsigned long long three = 3;
      20    vector unsigned long long threes = vec_splats (three);
      21    for (i = 0; i < N; i+=2) {
      22      vb = vec_vsx_ld (0, (vector long long *)&cb[i]);
      23      vc = vec_vsx_ld (0, (vector long long *)&cc[i]);
      24      vd = vec_vsx_ld (0, (vector long long *)&cd[i]);
      25      tmp = vec_add (vb, vc);
      26      tmp = vec_sub (tmp, vd);
      27      tmp = vec_sra (tmp, threes);
      28      x = vec_extract (tmp, 0);
      29      vec_vsx_st (tmp, 0, (vector long long *)&ca[i]);
      30    }
      31  }
      32  
      33  __attribute__((noinline)) void init ()
      34  {
      35    int i;
      36    for (i = 0; i < N; ++i) {
      37      cb[i] = 3 * i - 2048;
      38      cc[i] = -5 * i + 93;
      39      cd[i] = i + 14;
      40    }
      41  }
      42  
      43  int main ()
      44  {
      45    int i;
      46    init ();
      47    foo ();
      48    for (i = 0; i < N; ++i)
      49      if (ca[i] != (-3 * i - 1969) >> 3)
      50        abort ();
      51    if (x != ca[N-1])
      52      abort ();
      53    return 0;
      54  }