X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=isl_map_simplify.c;h=c7d5bae62f95f1b144cab96b054fcb7f7d16ce2a;hb=d07eed3bf4d0e290118588ca80997a8035eaeb21;hp=984eb58798ed4cfe9d484bc7a1201835633c8c54;hpb=fe8f991cf09ecb1aed45cd2599f23a490ac46501;p=platform%2Fupstream%2Fisl.git

diff --git a/isl_map_simplify.c b/isl_map_simplify.c
index 984eb58..c7d5bae 100644
--- a/isl_map_simplify.c
+++ b/isl_map_simplify.c
@@ -7,13 +7,14 @@
  * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
  */
 
+#include <strings.h>
 #include <isl_ctx_private.h>
 #include <isl_map_private.h>
 #include "isl_equalities.h"
 #include <isl/map.h>
 #include <isl/seq.h>
 #include "isl_tab.h"
-#include <isl_dim_private.h>
+#include <isl_space_private.h>
 #include <isl_mat_private.h>
 
 static void swap_equality(struct isl_basic_map *bmap, int a, int b)
@@ -32,11 +33,6 @@ static void swap_inequality(struct isl_basic_map *bmap, int a, int b)
 	}
 }
 
-static void set_swap_inequality(struct isl_basic_set *bset, int a, int b)
-{
-	swap_inequality((struct isl_basic_map *)bset, a, b);
-}
-
 static void constraint_drop_vars(isl_int *c, unsigned n, unsigned rem)
 {
 	isl_seq_cpy(c, c + n, rem);
@@ -60,7 +56,7 @@ struct isl_basic_set *isl_basic_set_drop_dims(
 
 	isl_assert(bset->ctx, first + n <= bset->dim->n_out, goto error);
 
-	if (n == 0 && !isl_dim_get_tuple_name(bset->dim, isl_dim_set))
+	if (n == 0 && !isl_space_get_tuple_name(bset->dim, isl_dim_set))
 		return bset;
 
 	bset = isl_basic_set_cow(bset);
@@ -79,7 +75,7 @@ struct isl_basic_set *isl_basic_set_drop_dims(
 		constraint_drop_vars(bset->div[i]+1+1+bset->dim->nparam+first, n,
 				     (bset->dim->n_out-first-n)+bset->extra);
 
-	bset->dim = isl_dim_drop_outputs(bset->dim, first, n);
+	bset->dim = isl_space_drop_outputs(bset->dim, first, n);
 	if (!bset->dim)
 		goto error;
 
@@ -101,12 +97,12 @@ struct isl_set *isl_set_drop_dims(
 
 	isl_assert(set->ctx, first + n <= set->dim->n_out, goto error);
 
-	if (n == 0 && !isl_dim_get_tuple_name(set->dim, isl_dim_set))
+	if (n == 0 && !isl_space_get_tuple_name(set->dim, isl_dim_set))
 		return set;
 	set = isl_set_cow(set);
 	if (!set)
 		goto error;
-	set->dim = isl_dim_drop_outputs(set->dim, first, n);
+	set->dim = isl_space_drop_outputs(set->dim, first, n);
 	if (!set->dim)
 		goto error;
 
@@ -171,7 +167,7 @@ struct isl_basic_map *isl_basic_map_drop(struct isl_basic_map *bmap,
 	dim = isl_basic_map_dim(bmap, type);
 	isl_assert(bmap->ctx, first + n <= dim, goto error);
 
-	if (n == 0 && !isl_dim_get_tuple_name(bmap->dim, type))
+	if (n == 0 && !isl_space_is_named_or_nested(bmap->dim, type))
 		return bmap;
 
 	bmap = isl_basic_map_cow(bmap);
@@ -195,7 +191,7 @@ struct isl_basic_map *isl_basic_map_drop(struct isl_basic_map *bmap,
 			goto error;
 		isl_basic_map_free_div(bmap, n);
 	} else
-		bmap->dim = isl_dim_drop(bmap->dim, type, first, n);
+		bmap->dim = isl_space_drop_dims(bmap->dim, type, first, n);
 	if (!bmap->dim)
 		goto error;
 
@@ -230,12 +226,12 @@ struct isl_map *isl_map_drop(struct isl_map *map,
 
 	isl_assert(map->ctx, first + n <= isl_map_dim(map, type), goto error);
 
-	if (n == 0 && !isl_dim_get_tuple_name(map->dim, type))
+	if (n == 0 && !isl_space_get_tuple_name(map->dim, type))
 		return map;
 	map = isl_map_cow(map);
 	if (!map)
 		goto error;
-	map->dim = isl_dim_drop(map->dim, type, first, n);
+	map->dim = isl_space_drop_dims(map->dim, type, first, n);
 	if (!map->dim)
 		goto error;
 
@@ -276,7 +272,7 @@ static struct isl_basic_map *isl_basic_map_drop_div(
 	if (!bmap)
 		goto error;
 
-	pos = 1 + isl_dim_total(bmap->dim) + div;
+	pos = 1 + isl_space_dim(bmap->dim, isl_dim_all) + div;
 
 	isl_assert(bmap->ctx, div < bmap->n_div, goto error);
 
@@ -380,12 +376,13 @@ static void eliminate_var_using_equality(struct isl_basic_map *bmap,
 	unsigned pos, isl_int *eq, int keep_divs, int *progress)
 {
 	unsigned total;
+	unsigned space_total;
 	int k;
 	int last_div;
 
 	total = isl_basic_map_total_dim(bmap);
-	last_div = isl_seq_last_non_zero(eq + 1 + isl_dim_total(bmap->dim),
-						bmap->n_div);
+	space_total = isl_space_dim(bmap->dim, isl_dim_all);
+	last_div = isl_seq_last_non_zero(eq + 1 + space_total, bmap->n_div);
 	for (k = 0; k < bmap->n_eq; ++k) {
 		if (bmap->eq[k] == eq)
 			continue;
@@ -435,7 +432,7 @@ static void eliminate_var_using_equality(struct isl_basic_map *bmap,
 static void eliminate_div(struct isl_basic_map *bmap, isl_int *eq,
 	unsigned div, int keep_divs)
 {
-	unsigned pos = isl_dim_total(bmap->dim) + div;
+	unsigned pos = isl_space_dim(bmap->dim, isl_dim_all) + div;
 
 	eliminate_var_using_equality(bmap, pos, eq, keep_divs, NULL);
 
@@ -450,10 +447,10 @@ static int ok_to_eliminate_div(struct isl_basic_map *bmap, isl_int *eq,
 {
 	int k;
 	int last_div;
-	unsigned pos = isl_dim_total(bmap->dim) + div;
+	unsigned space_total = isl_space_dim(bmap->dim, isl_dim_all);
+	unsigned pos = space_total + div;
 
-	last_div = isl_seq_last_non_zero(eq + 1 + isl_dim_total(bmap->dim),
-						bmap->n_div);
+	last_div = isl_seq_last_non_zero(eq + 1 + space_total, bmap->n_div);
 	if (last_div < 0 || last_div <= div)
 		return 1;
 
@@ -482,7 +479,7 @@ static struct isl_basic_map *eliminate_divs_eq(
 	if (!bmap)
 		return NULL;
 
-	off = 1 + isl_dim_total(bmap->dim);
+	off = 1 + isl_space_dim(bmap->dim, isl_dim_all);
 
 	for (d = bmap->n_div - 1; d >= 0 ; --d) {
 		for (i = 0; i < bmap->n_eq; ++i) {
@@ -517,7 +514,7 @@ static struct isl_basic_map *eliminate_divs_ineq(
 		return NULL;
 
 	ctx = bmap->ctx;
-	off = 1 + isl_dim_total(bmap->dim);
+	off = 1 + isl_space_dim(bmap->dim, isl_dim_all);
 
 	for (d = bmap->n_div - 1; d >= 0 ; --d) {
 		for (i = 0; i < bmap->n_eq; ++i)
@@ -657,7 +654,7 @@ static struct isl_basic_map *remove_duplicate_divs(
 	if (!bmap || bmap->n_div <= 1)
 		return bmap;
 
-	total_var = isl_dim_total(bmap->dim);
+	total_var = isl_space_dim(bmap->dim, isl_dim_all);
 	total = total_var + bmap->n_div;
 
 	ctx = bmap->ctx;
@@ -720,7 +717,7 @@ static int n_pure_div_eq(struct isl_basic_map *bmap)
 	int i, j;
 	unsigned total;
 
-	total = isl_dim_total(bmap->dim);
+	total = isl_space_dim(bmap->dim, isl_dim_all);
 	for (i = 0, j = bmap->n_div-1; i < bmap->n_eq; ++i) {
 		while (j >= 0 && isl_int_is_zero(bmap->eq[i][1 + total + j]))
 			--j;
@@ -807,7 +804,7 @@ static struct isl_basic_map *normalize_divs(
 	if (ISL_F_ISSET(bmap, ISL_BASIC_MAP_NORMALIZED_DIVS))
 		return bmap;
 
-	total = isl_dim_total(bmap->dim);
+	total = isl_space_dim(bmap->dim, isl_dim_all);
 	div_eq = n_pure_div_eq(bmap);
 	if (div_eq == 0)
 		return bmap;
@@ -882,7 +879,7 @@ static struct isl_basic_map *normalize_divs(
 			needed++;
 	}
 	if (needed > dropped) {
-		bmap = isl_basic_map_extend_dim(bmap, isl_dim_copy(bmap->dim),
+		bmap = isl_basic_map_extend_space(bmap, isl_space_copy(bmap->dim),
 				needed, needed, 0);
 		if (!bmap)
 			goto error;
@@ -932,7 +929,7 @@ error:
 static struct isl_basic_map *set_div_from_lower_bound(
 	struct isl_basic_map *bmap, int div, int ineq)
 {
-	unsigned total = 1 + isl_dim_total(bmap->dim);
+	unsigned total = 1 + isl_space_dim(bmap->dim, isl_dim_all);
 
 	isl_seq_neg(bmap->div[div] + 1, bmap->ineq[ineq], total + bmap->n_div);
 	isl_int_set(bmap->div[div][0], bmap->ineq[ineq][total + div]);
@@ -953,7 +950,7 @@ static int ok_to_set_div_from_bound(struct isl_basic_map *bmap,
 	int div, int ineq)
 {
 	int j;
-	unsigned total = 1 + isl_dim_total(bmap->dim);
+	unsigned total = 1 + isl_space_dim(bmap->dim, isl_dim_all);
 
 	/* Not defined in terms of unknown divs */
 	for (j = 0; j < bmap->n_div; ++j) {
@@ -993,7 +990,7 @@ static struct isl_basic_map *check_for_div_constraints(
 	struct isl_basic_map *bmap, int k, int l, isl_int sum, int *progress)
 {
 	int i;
-	unsigned total = 1 + isl_dim_total(bmap->dim);
+	unsigned total = 1 + isl_space_dim(bmap->dim, isl_dim_all);
 
 	for (i = 0; i < bmap->n_div; ++i) {
 		if (!isl_int_is_zero(bmap->div[i][0]))
@@ -1024,12 +1021,14 @@ static struct isl_basic_map *remove_duplicate_constraints(
 	int bits;
 	unsigned total = isl_basic_map_total_dim(bmap);
 	isl_int sum;
+	isl_ctx *ctx;
 
 	if (!bmap || bmap->n_ineq <= 1)
 		return bmap;
 
 	size = round_up(4 * (bmap->n_ineq+1) / 3 - 1);
 	bits = ffs(size) - 1;
+	ctx = isl_basic_map_get_ctx(bmap);
 	index = isl_calloc_array(ctx, isl_int **, size);
 	if (!index)
 		return bmap;
@@ -1119,7 +1118,7 @@ int isl_basic_map_is_div_constraint(__isl_keep isl_basic_map *bmap,
 	if (!bmap)
 		return -1;
 
-	pos = 1 + isl_dim_total(bmap->dim) + div;
+	pos = 1 + isl_space_dim(bmap->dim, isl_dim_all) + div;
 
 	if (isl_int_eq(constraint[pos], bmap->div[div][0])) {
 		int neg;
@@ -1159,7 +1158,7 @@ int isl_basic_map_is_div_constraint(__isl_keep isl_basic_map *bmap,
 static int div_is_redundant(struct isl_basic_map *bmap, int div)
 {
 	int i;
-	unsigned pos = 1 + isl_dim_total(bmap->dim) + div;
+	unsigned pos = 1 + isl_space_dim(bmap->dim, isl_dim_all) + div;
 
 	for (i = 0; i < bmap->n_eq; ++i)
 		if (!isl_int_is_zero(bmap->eq[i][pos]))
@@ -1373,7 +1372,7 @@ static void compute_elimination_index(struct isl_basic_map *bmap, int *elim)
 	int d, i;
 	unsigned total;
 
-	total = isl_dim_total(bmap->dim);
+	total = isl_space_dim(bmap->dim, isl_dim_all);
 	for (d = 0; d < total; ++d)
 		elim[d] = -1;
 	for (i = 0; i < bmap->n_eq; ++i) {
@@ -1398,7 +1397,7 @@ static int reduced_using_equalities(isl_int *dst, isl_int *src,
 	int copied = 0;
 	unsigned total;
 
-	total = isl_dim_total(bmap->dim);
+	total = isl_space_dim(bmap->dim, isl_dim_all);
 	for (d = total - 1; d >= 0; --d) {
 		if (isl_int_is_zero(src[1+d]))
 			continue;
@@ -1466,12 +1465,14 @@ static struct isl_basic_set *remove_shifted_constraints(
 	isl_int ***index;
 	int bits;
 	int k, h, l;
+	isl_ctx *ctx;
 
 	if (!bset)
 		return NULL;
 
 	size = round_up(4 * (context->n_ineq+1) / 3 - 1);
 	bits = ffs(size) - 1;
+	ctx = isl_basic_set_get_ctx(bset);
 	index = isl_calloc_array(ctx, isl_int **, size);
 	if (!index)
 		return bset;
@@ -1500,94 +1501,6 @@ error:
 	return bset;
 }
 
-/* Tighten (decrease) the constant terms of the inequalities based
- * on the equalities, without removing any integer points.
- * For example, if there is an equality
- *
- *		i = 3 * j
- *
- * and an inequality
- *
- *		i >= 1
- *
- * then we want to replace the inequality by
- *
- *		i >= 3
- *
- * We do this by computing a variable compression and translating
- * the constraints to the compressed space.
- * If any constraint has coefficients (except the contant term)
- * with a common factor "f", then we can replace the constant term "c"
- * by
- *
- *		f * floor(c/f)
- *
- * That is, we add
- *
- *		f * floor(c/f) - c = -fract(c/f)
- *
- * and we can add the same value to the original constraint.
- *
- * In the example, the compressed space only contains "j",
- * and the inequality translates to
- *
- *		3 * j - 1 >= 0
- *
- * We add -fract(-1/3) = -2 to the original constraint to obtain
- *
- *		i - 3 >= 0
- */
-static struct isl_basic_set *normalize_constraints_in_compressed_space(
-	struct isl_basic_set *bset)
-{
-	int i;
-	unsigned total;
-	struct isl_mat *B, *C;
-	isl_int gcd;
-
-	if (!bset)
-		return NULL;
-
-	if (ISL_F_ISSET(bset, ISL_BASIC_SET_RATIONAL))
-		return bset;
-
-	if (!bset->n_ineq)
-		return bset;
-
-	bset = isl_basic_set_cow(bset);
-	if (!bset)
-		return NULL;
-
-	total = isl_basic_set_total_dim(bset);
-	B = isl_mat_sub_alloc6(bset->ctx, bset->eq, 0, bset->n_eq, 0, 1 + total);
-	C = isl_mat_variable_compression(B, NULL);
-	if (!C)
-		return bset;
-	if (C->n_col == 0) {
-		isl_mat_free(C);
-		return isl_basic_set_set_to_empty(bset);
-	}
-	B = isl_mat_sub_alloc6(bset->ctx, bset->ineq,
-						0, bset->n_ineq, 0, 1 + total);
-	C = isl_mat_product(B, C);
-	if (!C)
-		return bset;
-
-	isl_int_init(gcd);
-	for (i = 0; i < bset->n_ineq; ++i) {
-		isl_seq_gcd(C->row[i] + 1, C->n_col - 1, &gcd);
-		if (isl_int_is_one(gcd))
-			continue;
-		isl_int_fdiv_r(C->row[i][0], C->row[i][0], gcd);
-		isl_int_sub(bset->ineq[i][0], bset->ineq[i][0], C->row[i][0]);
-	}
-	isl_int_clear(gcd);
-
-	isl_mat_free(C);
-
-	return bset;
-}
-
 /* Remove all information from bset that is redundant in the context
  * of context.  Both bset and context are assumed to be full-dimensional.
  *
@@ -1825,7 +1738,7 @@ struct isl_basic_map *isl_basic_map_gist(struct isl_basic_map *bmap,
 		return bmap;
 	}
 	if (isl_basic_map_plain_is_empty(context)) {
-		struct isl_dim *dim = isl_dim_copy(bmap->dim);
+		isl_space *dim = isl_space_copy(bmap->dim);
 		isl_basic_map_free(context);
 		isl_basic_map_free(bmap);
 		return isl_basic_map_universe(dim);
@@ -1866,7 +1779,7 @@ __isl_give isl_map *isl_map_gist_basic_map(__isl_take isl_map *map,
 		goto error;;
 
 	if (isl_basic_map_plain_is_empty(context)) {
-		struct isl_dim *dim = isl_dim_copy(map->dim);
+		isl_space *dim = isl_space_copy(map->dim);
 		isl_basic_map_free(context);
 		isl_map_free(map);
 		return isl_map_universe(dim);
@@ -1876,7 +1789,7 @@ __isl_give isl_map *isl_map_gist_basic_map(__isl_take isl_map *map,
 	map = isl_map_cow(map);
 	if (!map || !context)
 		goto error;;
-	isl_assert(map->ctx, isl_dim_equal(map->dim, context->dim), goto error);
+	isl_assert(map->ctx, isl_space_is_equal(map->dim, context->dim), goto error);
 	map = isl_map_compute_divs(map);
 	for (i = 0; i < map->n; ++i)
 		context = isl_basic_map_align_divs(context, map->p[i]);
@@ -1901,13 +1814,19 @@ error:
 	return NULL;
 }
 
-__isl_give isl_map *isl_map_gist(__isl_take isl_map *map,
+static __isl_give isl_map *map_gist(__isl_take isl_map *map,
 	__isl_take isl_map *context)
 {
 	context = isl_map_compute_divs(context);
 	return isl_map_gist_basic_map(map, isl_map_simple_hull(context));
 }
 
+__isl_give isl_map *isl_map_gist(__isl_take isl_map *map,
+	__isl_take isl_map *context)
+{
+	return isl_map_align_params_map_map_and(map, context, &map_gist);
+}
+
 struct isl_basic_set *isl_basic_set_gist(struct isl_basic_set *bset,
 						struct isl_basic_set *context)
 {
@@ -1944,14 +1863,14 @@ int isl_basic_map_plain_is_disjoint(__isl_keep isl_basic_map *bmap1,
 
 	if (!bmap1 || !bmap2)
 		return -1;
-	isl_assert(bmap1->ctx, isl_dim_equal(bmap1->dim, bmap2->dim),
+	isl_assert(bmap1->ctx, isl_space_is_equal(bmap1->dim, bmap2->dim),
 			return -1);
 	if (bmap1->n_div || bmap2->n_div)
 		return 0;
 	if (!bmap1->n_eq && !bmap2->n_eq)
 		return 0;
 
-	total = isl_dim_total(bmap1->dim);
+	total = isl_space_dim(bmap1->dim, isl_dim_all);
 	if (total == 0)
 		return 0;
 	v = isl_vec_alloc(bmap1->ctx, 1 + total);
@@ -2077,7 +1996,7 @@ static int div_find_coalesce(struct isl_basic_map *bmap, int *pairs,
 
 	if (bmap->n_div <= 1)
 		return -1;
-	dim = isl_dim_total(bmap->dim);
+	dim = isl_space_dim(bmap->dim, isl_dim_all);
 	if (isl_seq_first_non_zero(bmap->ineq[l] + 1 + dim, div) != -1)
 		return -1;
 	if (isl_seq_first_non_zero(bmap->ineq[l] + 1 + dim + div + 1,
@@ -2180,7 +2099,7 @@ static void construct_test_ineq(struct isl_basic_map *bmap, int i,
 	int l, int u, isl_int *ineq, isl_int g, isl_int fl, isl_int fu)
 {
 	unsigned dim;
-	dim = isl_dim_total(bmap->dim);
+	dim = isl_space_dim(bmap->dim, isl_dim_all);
 
 	isl_int_gcd(g, bmap->ineq[l][1 + dim + i], bmap->ineq[u][1 + dim + i]);
 	isl_int_divexact(fl, bmap->ineq[l][1 + dim + i], g);
@@ -2218,7 +2137,7 @@ static struct isl_basic_map *drop_more_redundant_divs(
 	if (!bmap)
 		goto error;
 
-	dim = isl_dim_total(bmap->dim);
+	dim = isl_space_dim(bmap->dim, isl_dim_all);
 	vec = isl_vec_alloc(bmap->ctx, 1 + dim + bmap->n_div);
 	if (!vec)
 		goto error;
@@ -2349,7 +2268,7 @@ static struct isl_basic_map *coalesce_divs(struct isl_basic_map *bmap,
 	unsigned dim, total;
 	int i;
 
-	dim = isl_dim_total(bmap->dim);
+	dim = isl_space_dim(bmap->dim, isl_dim_all);
 	total = 1 + dim + bmap->n_div;
 
 	isl_int_init(a);
@@ -2409,7 +2328,7 @@ static struct isl_basic_map *coalesce_or_drop_more_redundant_divs(
 	int i, l, u;
 	unsigned dim;
 
-	dim = isl_dim_total(bmap->dim);
+	dim = isl_space_dim(bmap->dim, isl_dim_all);
 
 	for (i = 0; i < bmap->n_div; ++i) {
 		if (!pairs[i])
@@ -2463,7 +2382,7 @@ struct isl_basic_map *isl_basic_map_drop_redundant_divs(
 	if (!bmap)
 		goto error;
 
-	off = isl_dim_total(bmap->dim);
+	off = isl_space_dim(bmap->dim, isl_dim_all);
 	pairs = isl_calloc_array(bmap->ctx, int, bmap->n_div);
 	if (!pairs)
 		goto error;