gcc/testsuite/g++.dg/vect/pr87621.cc

   1 /* { dg-do compile } */
   2
   3 extern "C" double pow(double, double);
   4 template <typename T>
   5 T pow(T x, unsigned int n)
   6 {
   7   if (!n)
   8     return 1;
   9
  10   T y = 1;
  11   while (n > 1)
  12     {
  13       if (n%2)
  14         y *= x;
  15       x = x*x;
  16       n /= 2;
  17     }
  18   return x*y;
  19 }
  20
  21 void testVec(int* x)
  22 {
  23   for (int i = 0; i < 8; ++i)
  24     x[i] = pow(x[i], 10);
  25 }
  26
  27 /* { dg-final { scan-tree-dump "OUTER LOOP VECTORIZED" "vect" { target { vect_double && vect_hw_misalign } } } } */