Exemple #1
0
tree 
reset_evolution_in_loop (unsigned loop_num,
			 tree chrec, 
			 tree new_evol)
{
  gcc_assert (chrec_type (chrec) == chrec_type (new_evol));

  if (TREE_CODE (chrec) == POLYNOMIAL_CHREC
      && CHREC_VARIABLE (chrec) > loop_num)
    {
      tree left = reset_evolution_in_loop (loop_num, CHREC_LEFT (chrec),
					   new_evol);
      tree right = reset_evolution_in_loop (loop_num, CHREC_RIGHT (chrec),
					    new_evol);
      return build3 (POLYNOMIAL_CHREC, TREE_TYPE (left),
		     build_int_cst (NULL_TREE, CHREC_VARIABLE (chrec)),
		     left, right);
    }

  while (TREE_CODE (chrec) == POLYNOMIAL_CHREC
	 && CHREC_VARIABLE (chrec) == loop_num)
    chrec = CHREC_LEFT (chrec);
  
  return build_polynomial_chrec (loop_num, chrec, new_evol);
}
Exemple #2
0
tree
reset_evolution_in_loop (unsigned loop_num,
			 tree chrec,
			 tree new_evol)
{
  struct loop *loop = get_loop (cfun, loop_num);

  if (POINTER_TYPE_P (chrec_type (chrec)))
    gcc_assert (ptrofftype_p (chrec_type (new_evol)));
  else
    gcc_assert (chrec_type (chrec) == chrec_type (new_evol));

  if (TREE_CODE (chrec) == POLYNOMIAL_CHREC
      && flow_loop_nested_p (loop, get_chrec_loop (chrec)))
    {
      tree left = reset_evolution_in_loop (loop_num, CHREC_LEFT (chrec),
					   new_evol);
      tree right = reset_evolution_in_loop (loop_num, CHREC_RIGHT (chrec),
					    new_evol);
      return build3 (POLYNOMIAL_CHREC, TREE_TYPE (left),
		     CHREC_VAR (chrec), left, right);
    }

  while (TREE_CODE (chrec) == POLYNOMIAL_CHREC
	 && CHREC_VARIABLE (chrec) == loop_num)
    chrec = CHREC_LEFT (chrec);

  return build_polynomial_chrec (loop_num, chrec, new_evol);
}
Exemple #3
0
tree 
reset_evolution_in_loop (unsigned loop_num,
			 tree chrec, 
			 tree new_evol)
{
  if (TREE_CODE (chrec) == POLYNOMIAL_CHREC
      && CHREC_VARIABLE (chrec) > loop_num)
    return build2
      (TREE_CODE (chrec), 
       build_int_cst (NULL_TREE, CHREC_VARIABLE (chrec)), 
       reset_evolution_in_loop (loop_num, CHREC_LEFT (chrec), new_evol), 
       reset_evolution_in_loop (loop_num, CHREC_RIGHT (chrec), new_evol));
  
  while (TREE_CODE (chrec) == POLYNOMIAL_CHREC
	 && CHREC_VARIABLE (chrec) == loop_num)
    chrec = CHREC_LEFT (chrec);
  
  return build_polynomial_chrec (loop_num, chrec, new_evol);
}