1  /* { dg-do compile } */
       2  /* { dg-require-effective-target powerpc_p8vector_ok } */
       3  /* { dg-options "-mdejagnu-cpu=power8 -O3 -ffast-math" } */
       4  /* { dg-final { scan-assembler "lxvd2x" } } */
       5  /* { dg-final { scan-assembler-not "xxpermdi" } } */
       6  
       7  /* Verify that swap optimization works correctly in the presence of
       8     a V4SFmode reduction.  */
       9  
      10  extern double optvalue;
      11  extern void obfuscate (float, unsigned int);
      12  
      13  void
      14  foo (float *x, float *y, unsigned int n, unsigned int m)
      15  {
      16    unsigned int i, j;
      17    float sacc;
      18    for (j = 0; j < m; ++j)
      19      {
      20        sacc = 0.0f;
      21        for (i = 0; i < n; ++i)
      22  	sacc += x[i] * y[i];
      23        obfuscate (sacc, n);
      24      }
      25    optvalue = n * 2.0f * m;
      26  }