contrib/gcc/tree-ssa-loop-niter.c

1722       if (chrec_contains_undetermined (loop->estimated_nb_iterations)
1723 	  || tree_int_cst_lt (bound->bound, loop->estimated_nb_iterations))
1724 	loop->estimated_nb_iterations = bound->bound;
1859   if (loop->estimated_nb_iterations == chrec_dont_know
1861       || (loop->estimated_nb_iterations != NULL_TREE
1862 	  && TREE_CODE (loop->estimated_nb_iterations) == INTEGER_CST))
1865     loop->estimated_nb_iterations = chrec_dont_know;
1886   if (chrec_contains_undetermined (loop->estimated_nb_iterations))
2090   loop->estimated_nb_iterations = NULL;
2123   loop->estimated_nb_iterations
2124 	  = simplify_replace_tree (loop->estimated_nb_iterations, name, val);