gcc/testsuite/gcc.dg/vect/vect-version-2.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target vect_double } */
   3 /* { dg-require-effective-target vect_condition } */
   4
   5 void foo (double *x, double *y, int m, int n, int o, int p)
   6 {
   7   for (int i = 0; i < m; ++i)
   8     for (int j = 0; j < n; ++j)
   9       for (int k = 0; k < o; ++k)
  10         for (int l = 0; l < k; ++l)
  11           {
  12             double tem = x[l] + y[l];
  13             if (tem != 0.)
  14               y[l] = x[l];
  15             else
  16               y[l] = 0.;
  17           }
  18 }
  19
  20 /* Vectorization using partial vectors has zero versioning_threshold with
  21    either usage 1 or usage 2, the cond_expr replies on the computation in
  22    outer loop, so it doesn't need to reuse the loop version created by if
  23    conversion.  */
  24 /* { dg-final { scan-tree-dump "reusing loop version created by if conversion" "vect" {target {! vect_partial_vectors } } } } */