void offseted_less_than_var (int v, int offset, int v2) { // v + offset <= v2
isl_constraint * less = isl_inequality_alloc (isl_local_space_copy (ls));
less = isl_constraint_set_coefficient_si (less, isl_dim_set, v, -1);
less = isl_constraint_set_constant_si (less, -offset);
less = isl_constraint_set_coefficient_si (less, isl_dim_set, v2, 1);
solutions = isl_set_add_constraint (solutions, less);
}
void offseted_diff_less_than_var (int va, int vb, int offset, int mv) { // va - vb + offset <= mv
isl_constraint * less = isl_inequality_alloc (isl_local_space_copy (ls));
less = isl_constraint_set_coefficient_si (less, isl_dim_set, va, -1);
less = isl_constraint_set_coefficient_si (less, isl_dim_set, vb, 1);
less = isl_constraint_set_constant_si (less, -offset);
less = isl_constraint_set_coefficient_si (less, isl_dim_set, mv, 1);
solutions = isl_set_add_constraint (solutions, less);
}
static
isl_set* build_iteration_domain (scoplib_scop_p scop,
scoplib_statement_p s,
isl_space* space,
isl_ctx* ctxt)
{
isl_set* ret = isl_set_universe (isl_space_domain (isl_space_copy (space)));
int i;
isl_val* tmp = isl_val_int_from_si (ctxt, 0);
scoplib_matrix_p m = s->domain->elt;
for (i = 0; i < m->NbRows; ++i)
{
isl_local_space* ls =
isl_local_space_from_space (isl_set_get_space (ret));
isl_constraint* cst;
if (SCOPVAL_get_si(m->p[i][0]) == 0)
cst = isl_equality_alloc (isl_local_space_copy (ls));
else
cst = isl_inequality_alloc (isl_local_space_copy (ls));
// Set input dimensions.
int k;
for (k = 0; k < s->nb_iterators; ++k)
{
tmp = isl_val_set_si (tmp, SCOPVAL_get_si(m->p[i][k+1]));
cst = isl_constraint_set_coefficient_val (cst, isl_dim_set, k, isl_val_copy (tmp));
}
for (k = 0; k < scop->nb_parameters; ++k)
{
tmp =
isl_val_set_si (tmp, SCOPVAL_get_si(m->p[i][k+1+s->nb_iterators]));
cst =
isl_constraint_set_coefficient_val (cst, isl_dim_param, k,
isl_val_copy (tmp));
}
tmp = isl_val_set_si (tmp, SCOPVAL_get_si(m->p[i][m->NbColumns - 1]));
cst = isl_constraint_set_constant_val (cst, isl_val_copy (tmp));
// Insert constraint.
ret = isl_set_add_constraint (ret, cst);
}
isl_val_free (tmp);
return ret;
}
void equality (const std::vector< int > & coeffs) {
isl_constraint * equ = isl_equality_alloc (isl_local_space_copy (ls));
for (unsigned c = 0; c < coeffs.size (); ++c)
equ = isl_constraint_set_coefficient_si (equ, isl_dim_set, c, coeffs[c]);
solutions = isl_set_add_constraint (solutions, equ);
}
void less_than_const (int v, int constant) { // v <= constant
isl_constraint * less = isl_inequality_alloc (isl_local_space_copy (ls));
less = isl_constraint_set_coefficient_si (less, isl_dim_set, v, -1);
less = isl_constraint_set_constant_si (less, constant);
solutions = isl_set_add_constraint (solutions, less);
}
void more_than_const (int v, int constant) { // constant <= v
isl_constraint * more = isl_inequality_alloc (isl_local_space_copy (ls));
more = isl_constraint_set_coefficient_si (more, isl_dim_set, v, 1);
more = isl_constraint_set_constant_si (more, -constant);
solutions = isl_set_add_constraint (solutions, more);
}
