gcc/testsuite/gcc.dg/vect/vect-fma-3.c

   1 /* PR tree-optimization/91723 */
   2 /* { dg-do compile { target { scalar_all_fma || { i?86-*-* x86_64-*-* } } } } */
   3 /* { dg-additional-options "-mfma" { target { i?86-*-* x86_64-*-* } } } */
   4
   5 void
   6 foo (double *restrict r, const double *restrict a,
   7      const double *restrict b, const double *restrict c)
   8 {
   9   for (int i = 0; i < 1024; i++)
  10     {
  11       double x = __builtin_fma (a[i], b[i], c[i]);
  12       x = __builtin_fma (a[i], b[i], x);
  13       r[i] = x;
  14     }
  15 }
  16
  17 /* { dg-final { scan-tree-dump-times "LOOP VECTORIZED" 1 "vect" { target vect_double } } } */