* 91893 Orsay, France
*/
+#include <isl_ctx_private.h>
#include <isl_map_private.h>
#include <isl_local_space_private.h>
-#include <isl_dim_private.h>
+#include <isl_space_private.h>
#include <isl_mat_private.h>
#include <isl/seq.h>
return ls ? ls->dim->ctx : NULL;
}
-__isl_give isl_local_space *isl_local_space_alloc_div(__isl_take isl_dim *dim,
+__isl_give isl_local_space *isl_local_space_alloc_div(__isl_take isl_space *dim,
__isl_take isl_mat *div)
{
isl_ctx *ctx;
if (!dim)
goto error;
- ctx = isl_dim_get_ctx(dim);
+ ctx = isl_space_get_ctx(dim);
ls = isl_calloc_type(ctx, struct isl_local_space);
if (!ls)
goto error;
return ls;
error:
- isl_dim_free(dim);
+ isl_space_free(dim);
isl_local_space_free(ls);
return NULL;
}
-__isl_give isl_local_space *isl_local_space_alloc(__isl_take isl_dim *dim,
+__isl_give isl_local_space *isl_local_space_alloc(__isl_take isl_space *dim,
unsigned n_div)
{
isl_ctx *ctx;
if (!dim)
return NULL;
- total = isl_dim_total(dim);
+ total = isl_space_dim(dim, isl_dim_all);
- ctx = isl_dim_get_ctx(dim);
+ ctx = isl_space_get_ctx(dim);
div = isl_mat_alloc(ctx, n_div, 1 + 1 + total + n_div);
return isl_local_space_alloc_div(dim, div);
}
-__isl_give isl_local_space *isl_local_space_from_dim(__isl_take isl_dim *dim)
+__isl_give isl_local_space *isl_local_space_from_space(__isl_take isl_space *dim)
{
return isl_local_space_alloc(dim, 0);
}
if (!ls)
return NULL;
- return isl_local_space_alloc_div(isl_dim_copy(ls->dim),
+ return isl_local_space_alloc_div(isl_space_copy(ls->dim),
isl_mat_copy(ls->div));
}
if (--ls->ref > 0)
return NULL;
- isl_dim_free(ls->dim);
+ isl_space_free(ls->dim);
isl_mat_free(ls->div);
free(ls);
if (!ls1 || !ls2)
return -1;
- equal = isl_dim_equal(ls1->dim, ls2->dim);
+ equal = isl_space_is_equal(ls1->dim, ls2->dim);
if (equal < 0 || !equal)
return equal;
+ if (!isl_local_space_divs_known(ls1))
+ return 0;
+ if (!isl_local_space_divs_known(ls2))
+ return 0;
+
return isl_mat_is_equal(ls1->div, ls2->div);
}
if (type == isl_dim_div)
return ls->div->n_row;
if (type == isl_dim_all)
- return isl_dim_size(ls->dim, isl_dim_all) + ls->div->n_row;
- return isl_dim_size(ls->dim, type);
+ return isl_space_dim(ls->dim, isl_dim_all) + ls->div->n_row;
+ return isl_space_dim(ls->dim, type);
}
unsigned isl_local_space_offset(__isl_keep isl_local_space *ls,
enum isl_dim_type type)
{
- isl_dim *dim;
+ isl_space *dim;
if (!ls)
return 0;
const char *isl_local_space_get_dim_name(__isl_keep isl_local_space *ls,
enum isl_dim_type type, unsigned pos)
{
- return ls ? isl_dim_get_name(ls->dim, type, pos) : NULL;
+ return ls ? isl_space_get_dim_name(ls->dim, type, pos) : NULL;
}
__isl_give isl_div *isl_local_space_get_div(__isl_keep isl_local_space *ls,
isl_die(isl_local_space_get_ctx(ls), isl_error_invalid,
"index out of bounds", return NULL);
+ if (isl_int_is_zero(ls->div->row[pos][0]))
+ isl_die(isl_local_space_get_ctx(ls), isl_error_invalid,
+ "expression of div unknown", return NULL);
+
bmap = isl_basic_map_from_local_space(isl_local_space_copy(ls));
return isl_basic_map_div(bmap, pos);
}
-__isl_give isl_dim *isl_local_space_get_dim(__isl_keep isl_local_space *ls)
+__isl_give isl_space *isl_local_space_get_space(__isl_keep isl_local_space *ls)
{
if (!ls)
return NULL;
- return isl_dim_copy(ls->dim);
+ return isl_space_copy(ls->dim);
}
__isl_give isl_local_space *isl_local_space_set_dim_name(
ls = isl_local_space_cow(ls);
if (!ls)
return NULL;
- ls->dim = isl_dim_set_name(ls->dim, type, pos, s);
+ ls->dim = isl_space_set_dim_name(ls->dim, type, pos, s);
if (!ls->dim)
return isl_local_space_free(ls);
return ls;
}
+__isl_give isl_local_space *isl_local_space_reset_space(
+ __isl_take isl_local_space *ls, __isl_take isl_space *dim)
+{
+ ls = isl_local_space_cow(ls);
+ if (!ls || !dim)
+ goto error;
+
+ isl_space_free(ls->dim);
+ ls->dim = dim;
+
+ return ls;
+error:
+ isl_local_space_free(ls);
+ isl_space_free(dim);
+ return NULL;
+}
+
+/* Reorder the columns of the given div definitions according to the
+ * given reordering.
+ * The order of the divs themselves is assumed not to change.
+ */
+static __isl_give isl_mat *reorder_divs(__isl_take isl_mat *div,
+ __isl_take isl_reordering *r)
+{
+ int i, j;
+ isl_mat *mat;
+ int extra;
+
+ if (!div || !r)
+ goto error;
+
+ extra = isl_space_dim(r->dim, isl_dim_all) + div->n_row - r->len;
+ mat = isl_mat_alloc(div->ctx, div->n_row, div->n_col + extra);
+ if (!mat)
+ goto error;
+
+ for (i = 0; i < div->n_row; ++i) {
+ isl_seq_cpy(mat->row[i], div->row[i], 2);
+ isl_seq_clr(mat->row[i] + 2, mat->n_col - 2);
+ for (j = 0; j < r->len; ++j)
+ isl_int_set(mat->row[i][2 + r->pos[j]],
+ div->row[i][2 + j]);
+ }
+
+ isl_reordering_free(r);
+ isl_mat_free(div);
+ return mat;
+error:
+ isl_reordering_free(r);
+ isl_mat_free(div);
+ return NULL;
+}
+
+/* Reorder the dimensions of "ls" according to the given reordering.
+ * The reordering r is assumed to have been extended with the local
+ * variables, leaving them in the same order.
+ */
+__isl_give isl_local_space *isl_local_space_realign(
+ __isl_take isl_local_space *ls, __isl_take isl_reordering *r)
+{
+ ls = isl_local_space_cow(ls);
+ if (!ls || !r)
+ goto error;
+
+ ls->div = reorder_divs(ls->div, isl_reordering_copy(r));
+ if (!ls->div)
+ goto error;
+
+ ls = isl_local_space_reset_space(ls, isl_space_copy(r->dim));
+
+ isl_reordering_free(r);
+ return ls;
+error:
+ isl_local_space_free(ls);
+ isl_reordering_free(r);
+ return NULL;
+}
+
__isl_give isl_local_space *isl_local_space_add_div(
__isl_take isl_local_space *ls, __isl_take isl_vec *div)
{
ls = isl_local_space_cow(ls);
if (!ls)
return NULL;
- ls->dim = isl_dim_from_domain(ls->dim);
+ ls->dim = isl_space_from_domain(ls->dim);
if (!ls->dim)
return isl_local_space_free(ls);
return ls;
}
-__isl_give isl_local_space *isl_local_space_add_dim(
+__isl_give isl_local_space *isl_local_space_add_dims(
__isl_take isl_local_space *ls, enum isl_dim_type type, unsigned n)
{
int pos;
- if (n == 0)
+ if (!ls)
+ return NULL;
+ pos = isl_local_space_dim(ls, type);
+ return isl_local_space_insert_dims(ls, type, pos, n);
+}
+
+/* Remove common factor of non-constant terms and denominator.
+ */
+static void normalize_div(__isl_keep isl_local_space *ls, int div)
+{
+ isl_ctx *ctx = ls->div->ctx;
+ unsigned total = ls->div->n_col - 2;
+
+ isl_seq_gcd(ls->div->row[div] + 2, total, &ctx->normalize_gcd);
+ isl_int_gcd(ctx->normalize_gcd,
+ ctx->normalize_gcd, ls->div->row[div][0]);
+ if (isl_int_is_one(ctx->normalize_gcd))
+ return;
+
+ isl_seq_scale_down(ls->div->row[div] + 2, ls->div->row[div] + 2,
+ ctx->normalize_gcd, total);
+ isl_int_divexact(ls->div->row[div][0], ls->div->row[div][0],
+ ctx->normalize_gcd);
+ isl_int_fdiv_q(ls->div->row[div][1], ls->div->row[div][1],
+ ctx->normalize_gcd);
+}
+
+/* Exploit the equalities in "eq" to simplify the expressions of
+ * the integer divisions in "ls".
+ * The integer divisions in "ls" are assumed to appear as regular
+ * dimensions in "eq".
+ */
+__isl_give isl_local_space *isl_local_space_substitute_equalities(
+ __isl_take isl_local_space *ls, __isl_take isl_basic_set *eq)
+{
+ int i, j, k;
+ unsigned total;
+ unsigned n_div;
+
+ ls = isl_local_space_cow(ls);
+ if (!ls || !eq)
+ goto error;
+
+ total = isl_space_dim(eq->dim, isl_dim_all);
+ if (isl_local_space_dim(ls, isl_dim_all) != total)
+ isl_die(isl_local_space_get_ctx(ls), isl_error_invalid,
+ "dimensions don't match", goto error);
+ total++;
+ n_div = eq->n_div;
+ for (i = 0; i < eq->n_eq; ++i) {
+ j = isl_seq_last_non_zero(eq->eq[i], total + n_div);
+ if (j < 0 || j == 0 || j >= total)
+ continue;
+
+ for (k = 0; k < ls->div->n_row; ++k) {
+ if (isl_int_is_zero(ls->div->row[k][1 + j]))
+ continue;
+ isl_seq_elim(ls->div->row[k] + 1, eq->eq[i], j, total,
+ &ls->div->row[k][0]);
+ normalize_div(ls, k);
+ }
+ }
+
+ isl_basic_set_free(eq);
+ return ls;
+error:
+ isl_basic_set_free(eq);
+ isl_local_space_free(ls);
+ return NULL;
+}
+
+int isl_local_space_is_named_or_nested(__isl_keep isl_local_space *ls,
+ enum isl_dim_type type)
+{
+ if (!ls)
+ return -1;
+ return isl_space_is_named_or_nested(ls->dim, type);
+}
+
+__isl_give isl_local_space *isl_local_space_drop_dims(
+ __isl_take isl_local_space *ls,
+ enum isl_dim_type type, unsigned first, unsigned n)
+{
+ isl_ctx *ctx;
+
+ if (!ls)
+ return NULL;
+ if (n == 0 && !isl_local_space_is_named_or_nested(ls, type))
return ls;
+ ctx = isl_local_space_get_ctx(ls);
+ if (first + n > isl_local_space_dim(ls, type))
+ isl_die(ctx, isl_error_invalid, "range out of bounds",
+ return isl_local_space_free(ls));
+
ls = isl_local_space_cow(ls);
if (!ls)
return NULL;
- pos = isl_local_space_offset(ls, type);
- pos += isl_local_space_dim(ls, type);
+ if (type == isl_dim_div) {
+ ls->div = isl_mat_drop_rows(ls->div, first, n);
+ } else {
+ ls->dim = isl_space_drop_dims(ls->dim, type, first, n);
+ if (!ls->dim)
+ return isl_local_space_free(ls);
+ }
+
+ first += 1 + isl_local_space_offset(ls, type);
+ ls->div = isl_mat_drop_cols(ls->div, first, n);
+ if (!ls->div)
+ return isl_local_space_free(ls);
+
+ return ls;
+}
+
+__isl_give isl_local_space *isl_local_space_insert_dims(
+ __isl_take isl_local_space *ls,
+ enum isl_dim_type type, unsigned first, unsigned n)
+{
+ isl_ctx *ctx;
+
+ if (!ls)
+ return NULL;
+ if (n == 0 && !isl_local_space_is_named_or_nested(ls, type))
+ return ls;
+
+ ctx = isl_local_space_get_ctx(ls);
+ if (first > isl_local_space_dim(ls, type))
+ isl_die(ctx, isl_error_invalid, "position out of bounds",
+ return isl_local_space_free(ls));
- ls->div = isl_mat_insert_zero_cols(ls->div, 1 + pos, n);
+ ls = isl_local_space_cow(ls);
+ if (!ls)
+ return NULL;
if (type == isl_dim_div) {
- ls->div = isl_mat_add_zero_rows(ls->div, n);
+ ls->div = isl_mat_insert_zero_rows(ls->div, first, n);
} else {
- ls->dim = isl_dim_add(ls->dim, type, n);
+ ls->dim = isl_space_insert_dims(ls->dim, type, first, n);
if (!ls->dim)
return isl_local_space_free(ls);
}
+ first += 1 + isl_local_space_offset(ls, type);
+ ls->div = isl_mat_insert_zero_cols(ls->div, first, n);
if (!ls->div)
return isl_local_space_free(ls);
return ls;
}
+
+/* Check if the constraints pointed to by "constraint" is a div
+ * constraint corresponding to div "div" in "ls".
+ *
+ * That is, if div = floor(f/m), then check if the constraint is
+ *
+ * f - m d >= 0
+ * or
+ * -(f-(m-1)) + m d >= 0
+ */
+int isl_local_space_is_div_constraint(__isl_keep isl_local_space *ls,
+ isl_int *constraint, unsigned div)
+{
+ unsigned pos;
+
+ if (!ls)
+ return -1;
+
+ if (isl_int_is_zero(ls->div->row[div][0]))
+ return 0;
+
+ pos = isl_local_space_offset(ls, isl_dim_div) + div;
+
+ if (isl_int_eq(constraint[pos], ls->div->row[div][0])) {
+ int neg;
+ isl_int_sub(ls->div->row[div][1],
+ ls->div->row[div][1], ls->div->row[div][0]);
+ isl_int_add_ui(ls->div->row[div][1], ls->div->row[div][1], 1);
+ neg = isl_seq_is_neg(constraint, ls->div->row[div]+1, pos);
+ isl_int_sub_ui(ls->div->row[div][1], ls->div->row[div][1], 1);
+ isl_int_add(ls->div->row[div][1],
+ ls->div->row[div][1], ls->div->row[div][0]);
+ if (!neg)
+ return 0;
+ if (isl_seq_first_non_zero(constraint+pos+1,
+ ls->div->n_row-div-1) != -1)
+ return 0;
+ } else if (isl_int_abs_eq(constraint[pos], ls->div->row[div][0])) {
+ if (!isl_seq_eq(constraint, ls->div->row[div]+1, pos))
+ return 0;
+ if (isl_seq_first_non_zero(constraint+pos+1,
+ ls->div->n_row-div-1) != -1)
+ return 0;
+ } else
+ return 0;
+
+ return 1;
+}
projects / platform / upstream / isl.git / blobdiff