/*
* Copyright 2008-2009 Katholieke Universiteit Leuven
* Copyright 2010 INRIA Saclay
* Copyright 2013-2014 Ecole Normale Superieure
*
* Use of this software is governed by the MIT license
*
* Written by Sven Verdoolaege, K.U.Leuven, Departement
* Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
* and INRIA Saclay - Ile-de-France, Parc Club Orsay Universite,
* ZAC des vignes, 4 rue Jacques Monod, 91893 Orsay, France
* and Ecole Normale Superieure, 45 rue d’Ulm, 75230 Paris, France
*/
#include <stdlib.h>
#include <string.h>
#include <isl_space_private.h>
#include <isl_id_private.h>
#include <isl_reordering.h>
isl_ctx *isl_space_get_ctx(__isl_keep isl_space *dim)
{
return dim ? dim->ctx : NULL;
}
__isl_give isl_space *isl_space_alloc(isl_ctx *ctx,
unsigned nparam, unsigned n_in, unsigned n_out)
{
isl_space *dim;
dim = isl_alloc_type(ctx, struct isl_space);
if (!dim)
return NULL;
dim->ctx = ctx;
isl_ctx_ref(ctx);
dim->ref = 1;
dim->nparam = nparam;
dim->n_in = n_in;
dim->n_out = n_out;
dim->tuple_id[0] = NULL;
dim->tuple_id[1] = NULL;
dim->nested[0] = NULL;
dim->nested[1] = NULL;
dim->n_id = 0;
dim->ids = NULL;
return dim;
}
/* Mark the space as being that of a set, by setting the domain tuple
* to isl_id_none.
*/
static __isl_give isl_space *mark_as_set(__isl_take isl_space *space)
{
space = isl_space_cow(space);
if (!space)
return NULL;
space = isl_space_set_tuple_id(space, isl_dim_in, &isl_id_none);
return space;
}
/* Is the space that of a set?
*/
int isl_space_is_set(__isl_keep isl_space *space)
{
if (!space)
return -1;
if (space->n_in != 0 || space->nested[0])
return 0;
if (space->tuple_id[0] != &isl_id_none)
return 0;
return 1;
}
/* Is the given space that of a map?
*/
int isl_space_is_map(__isl_keep isl_space *space)
{
if (!space)
return -1;
return space->tuple_id[0] != &isl_id_none &&
space->tuple_id[1] != &isl_id_none;
}
__isl_give isl_space *isl_space_set_alloc(isl_ctx *ctx,
unsigned nparam, unsigned dim)
{
isl_space *space;
space = isl_space_alloc(ctx, nparam, 0, dim);
space = mark_as_set(space);
return space;
}
/* Mark the space as being that of a parameter domain, by setting
* both tuples to isl_id_none.
*/
static __isl_give isl_space *mark_as_params(isl_space *space)
{
if (!space)
return NULL;
space = isl_space_set_tuple_id(space, isl_dim_in, &isl_id_none);
space = isl_space_set_tuple_id(space, isl_dim_out, &isl_id_none);
return space;
}
/* Is the space that of a parameter domain?
*/
int isl_space_is_params(__isl_keep isl_space *space)
{
if (!space)
return -1;
if (space->n_in != 0 || space->nested[0] ||
space->n_out != 0 || space->nested[1])
return 0;
if (space->tuple_id[0] != &isl_id_none)
return 0;
if (space->tuple_id[1] != &isl_id_none)
return 0;
return 1;
}
/* Create a space for a parameter domain.
*/
__isl_give isl_space *isl_space_params_alloc(isl_ctx *ctx, unsigned nparam)
{
isl_space *space;
space = isl_space_alloc(ctx, nparam, 0, 0);
space = mark_as_params(space);
return space;
}
static unsigned global_pos(__isl_keep isl_space *dim,
enum isl_dim_type type, unsigned pos)
{
struct isl_ctx *ctx = dim->ctx;
switch (type) {
case isl_dim_param:
isl_assert(ctx, pos < dim->nparam,
return isl_space_dim(dim, isl_dim_all));
return pos;
case isl_dim_in:
isl_assert(ctx, pos < dim->n_in,
return isl_space_dim(dim, isl_dim_all));
return pos + dim->nparam;
case isl_dim_out:
isl_assert(ctx, pos < dim->n_out,
return isl_space_dim(dim, isl_dim_all));
return pos + dim->nparam + dim->n_in;
default:
isl_assert(ctx, 0, return isl_space_dim(dim, isl_dim_all));
}
return isl_space_dim(dim, isl_dim_all);
}
/* Extend length of ids array to the total number of dimensions.
*/
static __isl_give isl_space *extend_ids(__isl_take isl_space *dim)
{
isl_id **ids;
int i;
if (isl_space_dim(dim, isl_dim_all) <= dim->n_id)
return dim;
if (!dim->ids) {
dim->ids = isl_calloc_array(dim->ctx,
isl_id *, isl_space_dim(dim, isl_dim_all));
if (!dim->ids)
goto error;
} else {
ids = isl_realloc_array(dim->ctx, dim->ids,
isl_id *, isl_space_dim(dim, isl_dim_all));
if (!ids)
goto error;
dim->ids = ids;
for (i = dim->n_id; i < isl_space_dim(dim, isl_dim_all); ++i)
dim->ids[i] = NULL;
}
dim->n_id = isl_space_dim(dim, isl_dim_all);
return dim;
error:
isl_space_free(dim);
return NULL;
}
static __isl_give isl_space *set_id(__isl_take isl_space *dim,
enum isl_dim_type type, unsigned pos, __isl_take isl_id *id)
{
dim = isl_space_cow(dim);
if (!dim)
goto error;
pos = global_pos(dim, type, pos);
if (pos == isl_space_dim(dim, isl_dim_all))
goto error;
if (pos >= dim->n_id) {
if (!id)
return dim;
dim = extend_ids(dim);
if (!dim)
goto error;
}
dim->ids[pos] = id;
return dim;
error:
isl_id_free(id);
isl_space_free(dim);
return NULL;
}
static __isl_keep isl_id *get_id(__isl_keep isl_space *dim,
enum isl_dim_type type, unsigned pos)
{
if (!dim)
return NULL;
pos = global_pos(dim, type, pos);
if (pos == isl_space_dim(dim, isl_dim_all))
return NULL;
if (pos >= dim->n_id)
return NULL;
return dim->ids[pos];
}
static unsigned offset(__isl_keep isl_space *dim, enum isl_dim_type type)
{
switch (type) {
case isl_dim_param: return 0;
case isl_dim_in: return dim->nparam;
case isl_dim_out: return dim->nparam + dim->n_in;
default: return 0;
}
}
static unsigned n(__isl_keep isl_space *dim, enum isl_dim_type type)
{
switch (type) {
case isl_dim_param: return dim->nparam;
case isl_dim_in: return dim->n_in;
case isl_dim_out: return dim->n_out;
case isl_dim_all: return dim->nparam + dim->n_in + dim->n_out;
default: return 0;
}
}
unsigned isl_space_dim(__isl_keep isl_space *dim, enum isl_dim_type type)
{
if (!dim)
return 0;
return n(dim, type);
}
unsigned isl_space_offset(__isl_keep isl_space *dim, enum isl_dim_type type)
{
if (!dim)
return 0;
return offset(dim, type);
}
static __isl_give isl_space *copy_ids(__isl_take isl_space *dst,
enum isl_dim_type dst_type, unsigned offset, __isl_keep isl_space *src,
enum isl_dim_type src_type)
{
int i;
isl_id *id;
if (!dst)
return NULL;
for (i = 0; i < n(src, src_type); ++i) {
id = get_id(src, src_type, i);
if (!id)
continue;
dst = set_id(dst, dst_type, offset + i, isl_id_copy(id));
if (!dst)
return NULL;
}
return dst;
}
__isl_take isl_space *isl_space_dup(__isl_keep isl_space *dim)
{
isl_space *dup;
if (!dim)
return NULL;
dup = isl_space_alloc(dim->ctx, dim->nparam, dim->n_in, dim->n_out);
if (!dup)
return NULL;
if (dim->tuple_id[0] &&
!(dup->tuple_id[0] = isl_id_copy(dim->tuple_id[0])))
goto error;
if (dim->tuple_id[1] &&
!(dup->tuple_id[1] = isl_id_copy(dim->tuple_id[1])))
goto error;
if (dim->nested[0] && !(dup->nested[0] = isl_space_copy(dim->nested[0])))
goto error;
if (dim->nested[1] && !(dup->nested[1] = isl_space_copy(dim->nested[1])))
goto error;
if (!dim->ids)
return dup;
dup = copy_ids(dup, isl_dim_param, 0, dim, isl_dim_param);
dup = copy_ids(dup, isl_dim_in, 0, dim, isl_dim_in);
dup = copy_ids(dup, isl_dim_out, 0, dim, isl_dim_out);
return dup;
error:
isl_space_free(dup);
return NULL;
}
__isl_give isl_space *isl_space_cow(__isl_take isl_space *dim)
{
if (!dim)
return NULL;
if (dim->ref == 1)
return dim;
dim->ref--;
return isl_space_dup(dim);
}
__isl_give isl_space *isl_space_copy(__isl_keep isl_space *dim)
{
if (!dim)
return NULL;
dim->ref++;
return dim;
}
__isl_null isl_space *isl_space_free(__isl_take isl_space *space)
{
int i;
if (!space)
return NULL;
if (--space->ref > 0)
return NULL;
isl_id_free(space->tuple_id[0]);
isl_id_free(space->tuple_id[1]);
isl_space_free(space->nested[0]);
isl_space_free(space->nested[1]);
for (i = 0; i < space->n_id; ++i)
isl_id_free(space->ids[i]);
free(space->ids);
isl_ctx_deref(space->ctx);
free(space);
return NULL;
}
/* Check if "s" is a valid dimension or tuple name.
* We currently only forbid names that look like a number.
*
* s is assumed to be non-NULL.
*/
static int name_ok(isl_ctx *ctx, const char *s)
{
char *p;
long dummy;
dummy = strtol(s, &p, 0);
if (p != s)
isl_die(ctx, isl_error_invalid, "name looks like a number",
return 0);
return 1;
}
/* Is it possible for the given dimension type to have a tuple id?
*/
static int space_can_have_id(__isl_keep isl_space *space,
enum isl_dim_type type)
{
if (!space)
return 0;
if (isl_space_is_params(space))
isl_die(space->ctx, isl_error_invalid,
"parameter spaces don't have tuple ids", return 0);
if (isl_space_is_set(space) && type != isl_dim_set)
isl_die(space->ctx, isl_error_invalid,
"set spaces can only have a set id", return 0);
if (type != isl_dim_in && type != isl_dim_out)
isl_die(space->ctx, isl_error_invalid,
"only input, output and set tuples can have ids",
return 0);
return 1;
}
/* Does the tuple have an id?
*/
int isl_space_has_tuple_id(__isl_keep isl_space *dim, enum isl_dim_type type)
{
if (!space_can_have_id(dim, type))
return -1;
return dim->tuple_id[type - isl_dim_in] != NULL;
}
__isl_give isl_id *isl_space_get_tuple_id(__isl_keep isl_space *dim,
enum isl_dim_type type)
{
int has_id;
if (!dim)
return NULL;
has_id = isl_space_has_tuple_id(dim, type);
if (has_id < 0)
return NULL;
if (!has_id)
isl_die(dim->ctx, isl_error_invalid,
"tuple has no id", return NULL);
return isl_id_copy(dim->tuple_id[type - isl_dim_in]);
}
__isl_give isl_space *isl_space_set_tuple_id(__isl_take isl_space *dim,
enum isl_dim_type type, __isl_take isl_id *id)
{
dim = isl_space_cow(dim);
if (!dim || !id)
goto error;
if (type != isl_dim_in && type != isl_dim_out)
isl_die(dim->ctx, isl_error_invalid,
"only input, output and set tuples can have names",
goto error);
isl_id_free(dim->tuple_id[type - isl_dim_in]);
dim->tuple_id[type - isl_dim_in] = id;
return dim;
error:
isl_id_free(id);
isl_space_free(dim);
return NULL;
}
__isl_give isl_space *isl_space_reset_tuple_id(__isl_take isl_space *dim,
enum isl_dim_type type)
{
dim = isl_space_cow(dim);
if (!dim)
return NULL;
if (type != isl_dim_in && type != isl_dim_out)
isl_die(dim->ctx, isl_error_invalid,
"only input, output and set tuples can have names",
goto error);
isl_id_free(dim->tuple_id[type - isl_dim_in]);
dim->tuple_id[type - isl_dim_in] = NULL;
return dim;
error:
isl_space_free(dim);
return NULL;
}
/* Set the id of the given dimension of "space" to "id".
* If the dimension already has an id, then it is replaced.
* If the dimension is a parameter, then we need to change it
* in the nested spaces (if any) as well.
*/
__isl_give isl_space *isl_space_set_dim_id(__isl_take isl_space *space,
enum isl_dim_type type, unsigned pos, __isl_take isl_id *id)
{
space = isl_space_cow(space);
if (!space || !id)
goto error;
if (type == isl_dim_param) {
int i;
for (i = 0; i < 2; ++i) {
if (!space->nested[i])
continue;
space->nested[i] =
isl_space_set_dim_id(space->nested[i],
type, pos, isl_id_copy(id));
if (!space->nested[i])
goto error;
}
}
isl_id_free(get_id(space, type, pos));
return set_id(space, type, pos, id);
error:
isl_id_free(id);
isl_space_free(space);
return NULL;
}
/* Reset the id of the given dimension of "space".
* If the dimension already has an id, then it is removed.
* If the dimension is a parameter, then we need to reset it
* in the nested spaces (if any) as well.
*/
__isl_give isl_space *isl_space_reset_dim_id(__isl_take isl_space *space,
enum isl_dim_type type, unsigned pos)
{
space = isl_space_cow(space);
if (!space)
goto error;
if (type == isl_dim_param) {
int i;
for (i = 0; i < 2; ++i) {
if (!space->nested[i])
continue;
space->nested[i] =
isl_space_reset_dim_id(space->nested[i],
type, pos);
if (!space->nested[i])
goto error;
}
}
isl_id_free(get_id(space, type, pos));
return set_id(space, type, pos, NULL);
error:
isl_space_free(space);
return NULL;
}
int isl_space_has_dim_id(__isl_keep isl_space *dim,
enum isl_dim_type type, unsigned pos)
{
if (!dim)
return -1;
return get_id(dim, type, pos) != NULL;
}
__isl_give isl_id *isl_space_get_dim_id(__isl_keep isl_space *dim,
enum isl_dim_type type, unsigned pos)
{
if (!dim)
return NULL;
if (!get_id(dim, type, pos))
isl_die(dim->ctx, isl_error_invalid,
"dim has no id", return NULL);
return isl_id_copy(get_id(dim, type, pos));
}
__isl_give isl_space *isl_space_set_tuple_name(__isl_take isl_space *dim,
enum isl_dim_type type, const char *s)
{
isl_id *id;
if (!dim)
return NULL;
if (!s)
return isl_space_reset_tuple_id(dim, type);
if (!name_ok(dim->ctx, s))
goto error;
id = isl_id_alloc(dim->ctx, s, NULL);
return isl_space_set_tuple_id(dim, type, id);
error:
isl_space_free(dim);
return NULL;
}
/* Does the tuple have a name?
*/
int isl_space_has_tuple_name(__isl_keep isl_space *space,
enum isl_dim_type type)
{
isl_id *id;
if (!space_can_have_id(space, type))
return -1;
id = space->tuple_id[type - isl_dim_in];
return id && id->name;
}
const char *isl_space_get_tuple_name(__isl_keep isl_space *dim,
enum isl_dim_type type)
{
isl_id *id;
if (!dim)
return NULL;
if (type != isl_dim_in && type != isl_dim_out)
return NULL;
id = dim->tuple_id[type - isl_dim_in];
return id ? id->name : NULL;
}
__isl_give isl_space *isl_space_set_dim_name(__isl_take isl_space *dim,
enum isl_dim_type type, unsigned pos,
const char *s)
{
isl_id *id;
if (!dim)
return NULL;
if (!s)
return isl_space_reset_dim_id(dim, type, pos);
if (!name_ok(dim->ctx, s))
goto error;
id = isl_id_alloc(dim->ctx, s, NULL);
return isl_space_set_dim_id(dim, type, pos, id);
error:
isl_space_free(dim);
return NULL;
}
/* Does the given dimension have a name?
*/
int isl_space_has_dim_name(__isl_keep isl_space *space,
enum isl_dim_type type, unsigned pos)
{
isl_id *id;
if (!space)
return -1;
id = get_id(space, type, pos);
return id && id->name;
}
__isl_keep const char *isl_space_get_dim_name(__isl_keep isl_space *dim,
enum isl_dim_type type, unsigned pos)
{
isl_id *id = get_id(dim, type, pos);
return id ? id->name : NULL;
}
int isl_space_find_dim_by_id(__isl_keep isl_space *dim, enum isl_dim_type type,
__isl_keep isl_id *id)
{
int i;
int offset;
int n;
if (!dim || !id)
return -1;
offset = isl_space_offset(dim, type);
n = isl_space_dim(dim, type);
for (i = 0; i < n && offset + i < dim->n_id; ++i)
if (dim->ids[offset + i] == id)
return i;
return -1;
}
int isl_space_find_dim_by_name(__isl_keep isl_space *space,
enum isl_dim_type type, const char *name)
{
int i;
int offset;
int n;
if (!space || !name)
return -1;
offset = isl_space_offset(space, type);
n = isl_space_dim(space, type);
for (i = 0; i < n && offset + i < space->n_id; ++i)
if (space->ids[offset + i]->name &&
!strcmp(space->ids[offset + i]->name, name))
return i;
return -1;
}
/* Reset the user pointer on all identifiers of parameters and tuples
* of "space".
*/
__isl_give isl_space *isl_space_reset_user(__isl_take isl_space *space)
{
int i;
isl_ctx *ctx;
isl_id *id;
const char *name;
if (!space)
return NULL;
ctx = isl_space_get_ctx(space);
for (i = 0; i < space->nparam && i < space->n_id; ++i) {
if (!isl_id_get_user(space->ids[i]))
continue;
space = isl_space_cow(space);
if (!space)
return NULL;
name = isl_id_get_name(space->ids[i]);
id = isl_id_alloc(ctx, name, NULL);
isl_id_free(space->ids[i]);
space->ids[i] = id;
if (!id)
return isl_space_free(space);
}
for (i = 0; i < 2; ++i) {
if (!space->tuple_id[i])
continue;
if (!isl_id_get_user(space->tuple_id[i]))
continue;
space = isl_space_cow(space);
if (!space)
return NULL;
name = isl_id_get_name(space->tuple_id[i]);
id = isl_id_alloc(ctx, name, NULL);
isl_id_free(space->tuple_id[i]);
space->tuple_id[i] = id;
if (!id)
return isl_space_free(space);
}
for (i = 0; i < 2; ++i) {
if (!space->nested[i])
continue;
space = isl_space_cow(space);
if (!space)
return NULL;
space->nested[i] = isl_space_reset_user(space->nested[i]);
if (!space->nested[i])
return isl_space_free(space);
}
return space;
}
static __isl_keep isl_id *tuple_id(__isl_keep isl_space *dim,
enum isl_dim_type type)
{
if (!dim)
return NULL;
if (type == isl_dim_in)
return dim->tuple_id[0];
if (type == isl_dim_out)
return dim->tuple_id[1];
return NULL;
}
static __isl_keep isl_space *nested(__isl_keep isl_space *dim,
enum isl_dim_type type)
{
if (!dim)
return NULL;
if (type == isl_dim_in)
return dim->nested[0];
if (type == isl_dim_out)
return dim->nested[1];
return NULL;
}
/* Are the two spaces the same, apart from positions and names of parameters?
*/
static int isl_space_has_equal_tuples(__isl_keep isl_space *space1,
__isl_keep isl_space *space2)
{
if (!space1 || !space2)
return -1;
if (space1 == space2)
return 1;
return isl_space_tuple_is_equal(space1, isl_dim_in,
space2, isl_dim_in) &&
isl_space_tuple_is_equal(space1, isl_dim_out,
space2, isl_dim_out);
}
/* Check if the tuple of type "type1" of "space1" is the same as
* the tuple of type "type2" of "space2".
*
* That is, check if the tuples have the same identifier, the same dimension
* and the same internal structure.
* The identifiers of the dimensions inside the tuples do not affect the result.
*
* Note that this function only checks the tuples themselves.
* If nested tuples are involved, then we need to be careful not
* to have result affected by possibly differing parameters
* in those nested tuples.
*/
int isl_space_tuple_is_equal(__isl_keep isl_space *space1,
enum isl_dim_type type1, __isl_keep isl_space *space2,
enum isl_dim_type type2)
{
isl_id *id1, *id2;
isl_space *nested1, *nested2;
if (!space1 || !space2)
return -1;
if (space1 == space2 && type1 == type2)
return 1;
if (n(space1, type1) != n(space2, type2))
return 0;
id1 = tuple_id(space1, type1);
id2 = tuple_id(space2, type2);
if (!id1 ^ !id2)
return 0;
if (id1 && id1 != id2)
return 0;
nested1 = nested(space1, type1);
nested2 = nested(space2, type2);
if (!nested1 ^ !nested2)
return 0;
if (nested1 && !isl_space_has_equal_tuples(nested1, nested2))
return 0;
return 1;
}
/* This is the old, undocumented, name for isl_space_tuple_is_equal.
* It will be removed at some point.
*/
int isl_space_tuple_match(__isl_keep isl_space *space1, enum isl_dim_type type1,
__isl_keep isl_space *space2, enum isl_dim_type type2)
{
return isl_space_tuple_is_equal(space1, type1, space2, type2);
}
static int match(__isl_keep isl_space *dim1, enum isl_dim_type dim1_type,
__isl_keep isl_space *dim2, enum isl_dim_type dim2_type)
{
int i;
if (dim1 == dim2 && dim1_type == dim2_type)
return 1;
if (!isl_space_tuple_is_equal(dim1, dim1_type, dim2, dim2_type))
return 0;
if (!dim1->ids && !dim2->ids)
return 1;
for (i = 0; i < n(dim1, dim1_type); ++i) {
if (get_id(dim1, dim1_type, i) != get_id(dim2, dim2_type, i))
return 0;
}
return 1;
}
int isl_space_match(__isl_keep isl_space *dim1, enum isl_dim_type dim1_type,
__isl_keep isl_space *dim2, enum isl_dim_type dim2_type)
{
if (!dim1 || !dim2)
return -1;
return match(dim1, dim1_type, dim2, dim2_type);
}
static void get_ids(__isl_keep isl_space *dim, enum isl_dim_type type,
unsigned first, unsigned n, __isl_keep isl_id **ids)
{
int i;
for (i = 0; i < n ; ++i)
ids[i] = get_id(dim, type, first + i);
}
__isl_give isl_space *isl_space_extend(__isl_take isl_space *dim,
unsigned nparam, unsigned n_in, unsigned n_out)
{
isl_id **ids = NULL;
if (!dim)
return NULL;
if (dim->nparam == nparam && dim->n_in == n_in && dim->n_out == n_out)
return dim;
isl_assert(dim->ctx, dim->nparam <= nparam, goto error);
isl_assert(dim->ctx, dim->n_in <= n_in, goto error);
isl_assert(dim->ctx, dim->n_out <= n_out, goto error);
dim = isl_space_cow(dim);
if (!dim)
goto error;
if (dim->ids) {
ids = isl_calloc_array(dim->ctx, isl_id *,
nparam + n_in + n_out);
if (!ids)
goto error;
get_ids(dim, isl_dim_param, 0, dim->nparam, ids);
get_ids(dim, isl_dim_in, 0, dim->n_in, ids + nparam);
get_ids(dim, isl_dim_out, 0, dim->n_out, ids + nparam + n_in);
free(dim->ids);
dim->ids = ids;
dim->n_id = nparam + n_in + n_out;
}
dim->nparam = nparam;
dim->n_in = n_in;
dim->n_out = n_out;
return dim;
error:
free(ids);
isl_space_free(dim);
return NULL;
}
__isl_give isl_space *isl_space_add_dims(__isl_take isl_space *dim,
enum isl_dim_type type, unsigned n)
{
if (!dim)
return NULL;
dim = isl_space_reset(dim, type);
switch (type) {
case isl_dim_param:
dim = isl_space_extend(dim,
dim->nparam + n, dim->n_in, dim->n_out);
if (dim && dim->nested[0] &&
!(dim->nested[0] = isl_space_add_dims(dim->nested[0],
isl_dim_param, n)))
goto error;
if (dim && dim->nested[1] &&
!(dim->nested[1] = isl_space_add_dims(dim->nested[1],
isl_dim_param, n)))
goto error;
return dim;
case isl_dim_in:
return isl_space_extend(dim,
dim->nparam, dim->n_in + n, dim->n_out);
case isl_dim_out:
return isl_space_extend(dim,
dim->nparam, dim->n_in, dim->n_out + n);
default:
isl_die(dim->ctx, isl_error_invalid,
"cannot add dimensions of specified type", goto error);
}
error:
isl_space_free(dim);
return NULL;
}
static int valid_dim_type(enum isl_dim_type type)
{
switch (type) {
case isl_dim_param:
case isl_dim_in:
case isl_dim_out:
return 1;
default:
return 0;
}
}
/* Insert "n" dimensions of type "type" at position "pos".
* If we are inserting parameters, then they are also inserted in
* any nested spaces.
*/
__isl_give isl_space *isl_space_insert_dims(__isl_take isl_space *dim,
enum isl_dim_type type, unsigned pos, unsigned n)
{
isl_id **ids = NULL;
if (!dim)
return NULL;
if (n == 0)
return isl_space_reset(dim, type);
if (!valid_dim_type(type))
isl_die(dim->ctx, isl_error_invalid,
"cannot insert dimensions of specified type",
goto error);
isl_assert(dim->ctx, pos <= isl_space_dim(dim, type), goto error);
dim = isl_space_cow(dim);
if (!dim)
return NULL;
if (dim->ids) {
enum isl_dim_type t, o = isl_dim_param;
int off;
int s[3];
ids = isl_calloc_array(dim->ctx, isl_id *,
dim->nparam + dim->n_in + dim->n_out + n);
if (!ids)
goto error;
off = 0;
s[isl_dim_param - o] = dim->nparam;
s[isl_dim_in - o] = dim->n_in;
s[isl_dim_out - o] = dim->n_out;
for (t = isl_dim_param; t <= isl_dim_out; ++t) {
if (t != type) {
get_ids(dim, t, 0, s[t - o], ids + off);
off += s[t - o];
} else {
get_ids(dim, t, 0, pos, ids + off);
off += pos + n;
get_ids(dim, t, pos, s[t - o] - pos, ids + off);
off += s[t - o] - pos;
}
}
free(dim->ids);
dim->ids = ids;
dim->n_id = dim->nparam + dim->n_in + dim->n_out + n;
}
switch (type) {
case isl_dim_param: dim->nparam += n; break;
case isl_dim_in: dim->n_in += n; break;
case isl_dim_out: dim->n_out += n; break;
default: ;
}
dim = isl_space_reset(dim, type);
if (type == isl_dim_param) {
if (dim && dim->nested[0] &&
!(dim->nested[0] = isl_space_insert_dims(dim->nested[0],
isl_dim_param, pos, n)))
goto error;
if (dim && dim->nested[1] &&
!(dim->nested[1] = isl_space_insert_dims(dim->nested[1],
isl_dim_param, pos, n)))
goto error;
}
return dim;
error:
isl_space_free(dim);
return NULL;
}
__isl_give isl_space *isl_space_move_dims(__isl_take isl_space *dim,
enum isl_dim_type dst_type, unsigned dst_pos,
enum isl_dim_type src_type, unsigned src_pos, unsigned n)
{
int i;
if (!dim)
return NULL;
if (n == 0) {
dim = isl_space_reset(dim, src_type);
return isl_space_reset(dim, dst_type);
}
isl_assert(dim->ctx, src_pos + n <= isl_space_dim(dim, src_type),
goto error);
if (dst_type == src_type && dst_pos == src_pos)
return dim;
isl_assert(dim->ctx, dst_type != src_type, goto error);
dim = isl_space_reset(dim, src_type);
dim = isl_space_reset(dim, dst_type);
dim = isl_space_cow(dim);
if (!dim)
return NULL;
if (dim->ids) {
isl_id **ids;
enum isl_dim_type t, o = isl_dim_param;
int off;
int s[3];
ids = isl_calloc_array(dim->ctx, isl_id *,
dim->nparam + dim->n_in + dim->n_out);
if (!ids)
goto error;
off = 0;
s[isl_dim_param - o] = dim->nparam;
s[isl_dim_in - o] = dim->n_in;
s[isl_dim_out - o] = dim->n_out;
for (t = isl_dim_param; t <= isl_dim_out; ++t) {
if (t == dst_type) {
get_ids(dim, t, 0, dst_pos, ids + off);
off += dst_pos;
get_ids(dim, src_type, src_pos, n, ids + off);
off += n;
get_ids(dim, t, dst_pos, s[t - o] - dst_pos,
ids + off);
off += s[t - o] - dst_pos;
} else if (t == src_type) {
get_ids(dim, t, 0, src_pos, ids + off);
off += src_pos;
get_ids(dim, t, src_pos + n,
s[t - o] - src_pos - n, ids + off);
off += s[t - o] - src_pos - n;
} else {
get_ids(dim, t, 0, s[t - o], ids + off);
off += s[t - o];
}
}
free(dim->ids);
dim->ids = ids;
dim->n_id = dim->nparam + dim->n_in + dim->n_out;
}
switch (dst_type) {
case isl_dim_param: dim->nparam += n; break;
case isl_dim_in: dim->n_in += n; break;
case isl_dim_out: dim->n_out += n; break;
default: ;
}
switch (src_type) {
case isl_dim_param: dim->nparam -= n; break;
case isl_dim_in: dim->n_in -= n; break;
case isl_dim_out: dim->n_out -= n; break;
default: ;
}
if (dst_type != isl_dim_param && src_type != isl_dim_param)
return dim;
for (i = 0; i < 2; ++i) {
if (!dim->nested[i])
continue;
dim->nested[i] = isl_space_replace(dim->nested[i],
isl_dim_param, dim);
if (!dim->nested[i])
goto error;
}
return dim;
error:
isl_space_free(dim);
return NULL;
}
__isl_give isl_space *isl_space_join(__isl_take isl_space *left,
__isl_take isl_space *right)
{
isl_space *dim;
if (!left || !right)
goto error;
isl_assert(left->ctx, match(left, isl_dim_param, right, isl_dim_param),
goto error);
isl_assert(left->ctx,
isl_space_tuple_is_equal(left, isl_dim_out, right, isl_dim_in),
goto error);
dim = isl_space_alloc(left->ctx, left->nparam, left->n_in, right->n_out);
if (!dim)
goto error;
dim = copy_ids(dim, isl_dim_param, 0, left, isl_dim_param);
dim = copy_ids(dim, isl_dim_in, 0, left, isl_dim_in);
dim = copy_ids(dim, isl_dim_out, 0, right, isl_dim_out);
if (dim && left->tuple_id[0] &&
!(dim->tuple_id[0] = isl_id_copy(left->tuple_id[0])))
goto error;
if (dim && right->tuple_id[1] &&
!(dim->tuple_id[1] = isl_id_copy(right->tuple_id[1])))
goto error;
if (dim && left->nested[0] &&
!(dim->nested[0] = isl_space_copy(left->nested[0])))
goto error;
if (dim && right->nested[1] &&
!(dim->nested[1] = isl_space_copy(right->nested[1])))
goto error;
isl_space_free(left);
isl_space_free(right);
return dim;
error:
isl_space_free(left);
isl_space_free(right);
return NULL;
}
/* Given two map spaces { A -> C } and { B -> D }, construct the space
* { [A -> B] -> [C -> D] }.
* Given two set spaces { A } and { B }, construct the space { [A -> B] }.
*/
__isl_give isl_space *isl_space_product(__isl_take isl_space *left,
__isl_take isl_space *right)
{
isl_space *dom1, *dom2, *nest1, *nest2;
int is_set;
if (!left || !right)
goto error;
is_set = isl_space_is_set(left);
if (is_set != isl_space_is_set(right))
isl_die(isl_space_get_ctx(left), isl_error_invalid,
"expecting either two set spaces or two map spaces",
goto error);
if (is_set)
return isl_space_range_product(left, right);
isl_assert(left->ctx, match(left, isl_dim_param, right, isl_dim_param),
goto error);
dom1 = isl_space_domain(isl_space_copy(left));
dom2 = isl_space_domain(isl_space_copy(right));
nest1 = isl_space_wrap(isl_space_join(isl_space_reverse(dom1), dom2));
dom1 = isl_space_range(left);
dom2 = isl_space_range(right);
nest2 = isl_space_wrap(isl_space_join(isl_space_reverse(dom1), dom2));
return isl_space_join(isl_space_reverse(nest1), nest2);
error:
isl_space_free(left);
isl_space_free(right);
return NULL;
}
/* Given two spaces { A -> C } and { B -> C }, construct the space
* { [A -> B] -> C }
*/
__isl_give isl_space *isl_space_domain_product(__isl_take isl_space *left,
__isl_take isl_space *right)
{
isl_space *ran, *dom1, *dom2, *nest;
if (!left || !right)
goto error;
if (!match(left, isl_dim_param, right, isl_dim_param))
isl_die(left->ctx, isl_error_invalid,
"parameters need to match", goto error);
if (!isl_space_tuple_is_equal(left, isl_dim_out, right, isl_dim_out))
isl_die(left->ctx, isl_error_invalid,
"ranges need to match", goto error);
ran = isl_space_range(isl_space_copy(left));
dom1 = isl_space_domain(left);
dom2 = isl_space_domain(right);
nest = isl_space_wrap(isl_space_join(isl_space_reverse(dom1), dom2));
return isl_space_join(isl_space_reverse(nest), ran);
error:
isl_space_free(left);
isl_space_free(right);
return NULL;
}
__isl_give isl_space *isl_space_range_product(__isl_take isl_space *left,
__isl_take isl_space *right)
{
isl_space *dom, *ran1, *ran2, *nest;
if (!left || !right)
goto error;
isl_assert(left->ctx, match(left, isl_dim_param, right, isl_dim_param),
goto error);
if (!isl_space_tuple_is_equal(left, isl_dim_in, right, isl_dim_in))
isl_die(left->ctx, isl_error_invalid,
"domains need to match", goto error);
dom = isl_space_domain(isl_space_copy(left));
ran1 = isl_space_range(left);
ran2 = isl_space_range(right);
nest = isl_space_wrap(isl_space_join(isl_space_reverse(ran1), ran2));
return isl_space_join(isl_space_reverse(dom), nest);
error:
isl_space_free(left);
isl_space_free(right);
return NULL;
}
/* Given a space of the form [A -> B] -> C, return the space A -> C.
*/
__isl_give isl_space *isl_space_domain_factor_domain(
__isl_take isl_space *space)
{
isl_space *nested;
isl_space *domain;
if (!space)
return NULL;
if (!isl_space_domain_is_wrapping(space))
isl_die(isl_space_get_ctx(space), isl_error_invalid,
"domain not a product", return isl_space_free(space));
nested = space->nested[0];
domain = isl_space_copy(space);
domain = isl_space_drop_dims(space, isl_dim_in,
nested->n_in, nested->n_out);
if (!domain)
return isl_space_free(space);
if (nested->tuple_id[0]) {
domain->tuple_id[0] = isl_id_copy(nested->tuple_id[0]);
if (!domain->tuple_id[0])
goto error;
}
if (nested->nested[0]) {
domain->nested[0] = isl_space_copy(nested->nested[0]);
if (!domain->nested[0])
goto error;
}
isl_space_free(space);
return domain;
error:
isl_space_free(space);
isl_space_free(domain);
return NULL;
}
/* Given a space of the form A -> [B -> C], return the space A -> B.
*/
__isl_give isl_space *isl_space_range_factor_domain(
__isl_take isl_space *space)
{
isl_space *nested;
isl_space *domain;
if (!space)
return NULL;
if (!isl_space_range_is_wrapping(space))
isl_die(isl_space_get_ctx(space), isl_error_invalid,
"range not a product", return isl_space_free(space));
nested = space->nested[1];
domain = isl_space_copy(space);
domain = isl_space_drop_dims(space, isl_dim_out,
nested->n_in, nested->n_out);
if (!domain)
return isl_space_free(space);
if (nested->tuple_id[0]) {
domain->tuple_id[1] = isl_id_copy(nested->tuple_id[0]);
if (!domain->tuple_id[1])
goto error;
}
if (nested->nested[0]) {
domain->nested[1] = isl_space_copy(nested->nested[0]);
if (!domain->nested[1])
goto error;
}
isl_space_free(space);
return domain;
error:
isl_space_free(space);
isl_space_free(domain);
return NULL;
}
/* Given a space of the form A -> [B -> C], return the space A -> C.
*/
__isl_give isl_space *isl_space_range_factor_range(
__isl_take isl_space *space)
{
isl_space *nested;
isl_space *range;
if (!space)
return NULL;
if (!isl_space_range_is_wrapping(space))
isl_die(isl_space_get_ctx(space), isl_error_invalid,
"range not a product", return isl_space_free(space));
nested = space->nested[1];
range = isl_space_copy(space);
range = isl_space_drop_dims(space, isl_dim_out, 0, nested->n_in);
if (!range)
return isl_space_free(space);
if (nested->tuple_id[1]) {
range->tuple_id[1] = isl_id_copy(nested->tuple_id[1]);
if (!range->tuple_id[1])
goto error;
}
if (nested->nested[1]) {
range->nested[1] = isl_space_copy(nested->nested[1]);
if (!range->nested[1])
goto error;
}
isl_space_free(space);
return range;
error:
isl_space_free(space);
isl_space_free(range);
return NULL;
}
__isl_give isl_space *isl_space_map_from_set(__isl_take isl_space *dim)
{
isl_ctx *ctx;
isl_id **ids = NULL;
if (!dim)
return NULL;
ctx = isl_space_get_ctx(dim);
if (!isl_space_is_set(dim))
isl_die(ctx, isl_error_invalid, "not a set space", goto error);
dim = isl_space_cow(dim);
if (!dim)
return NULL;
if (dim->ids) {
ids = isl_calloc_array(dim->ctx, isl_id *,
dim->nparam + dim->n_out + dim->n_out);
if (!ids)
goto error;
get_ids(dim, isl_dim_param, 0, dim->nparam, ids);
get_ids(dim, isl_dim_out, 0, dim->n_out, ids + dim->nparam);
}
dim->n_in = dim->n_out;
if (ids) {
free(dim->ids);
dim->ids = ids;
dim->n_id = dim->nparam + dim->n_out + dim->n_out;
dim = copy_ids(dim, isl_dim_out, 0, dim, isl_dim_in);
}
isl_id_free(dim->tuple_id[0]);
dim->tuple_id[0] = isl_id_copy(dim->tuple_id[1]);
isl_space_free(dim->nested[0]);
dim->nested[0] = isl_space_copy(dim->nested[1]);
return dim;
error:
isl_space_free(dim);
return NULL;
}
__isl_give isl_space *isl_space_map_from_domain_and_range(
__isl_take isl_space *domain, __isl_take isl_space *range)
{
if (!domain || !range)
goto error;
if (!isl_space_is_set(domain))
isl_die(isl_space_get_ctx(domain), isl_error_invalid,
"domain is not a set space", goto error);
if (!isl_space_is_set(range))
isl_die(isl_space_get_ctx(range), isl_error_invalid,
"range is not a set space", goto error);
return isl_space_join(isl_space_reverse(domain), range);
error:
isl_space_free(domain);
isl_space_free(range);
return NULL;
}
static __isl_give isl_space *set_ids(__isl_take isl_space *dim,
enum isl_dim_type type,
unsigned first, unsigned n, __isl_take isl_id **ids)
{
int i;
for (i = 0; i < n ; ++i)
dim = set_id(dim, type, first + i, ids[i]);
return dim;
}
__isl_give isl_space *isl_space_reverse(__isl_take isl_space *dim)
{
unsigned t;
isl_space *nested;
isl_id **ids = NULL;
isl_id *id;
if (!dim)
return NULL;
if (match(dim, isl_dim_in, dim, isl_dim_out))
return dim;
dim = isl_space_cow(dim);
if (!dim)
return NULL;
id = dim->tuple_id[0];
dim->tuple_id[0] = dim->tuple_id[1];
dim->tuple_id[1] = id;
nested = dim->nested[0];
dim->nested[0] = dim->nested[1];
dim->nested[1] = nested;
if (dim->ids) {
int n_id = dim->n_in + dim->n_out;
ids = isl_alloc_array(dim->ctx, isl_id *, n_id);
if (n_id && !ids)
goto error;
get_ids(dim, isl_dim_in, 0, dim->n_in, ids);
get_ids(dim, isl_dim_out, 0, dim->n_out, ids + dim->n_in);
}
t = dim->n_in;
dim->n_in = dim->n_out;
dim->n_out = t;
if (dim->ids) {
dim = set_ids(dim, isl_dim_out, 0, dim->n_out, ids);
dim = set_ids(dim, isl_dim_in, 0, dim->n_in, ids + dim->n_out);
free(ids);
}
return dim;
error:
free(ids);
isl_space_free(dim);
return NULL;
}
__isl_give isl_space *isl_space_drop_dims(__isl_take isl_space *dim,
enum isl_dim_type type, unsigned first, unsigned num)
{
int i;
if (!dim)
return NULL;
if (num == 0)
return isl_space_reset(dim, type);
if (!valid_dim_type(type))
isl_die(dim->ctx, isl_error_invalid,
"cannot drop dimensions of specified type", goto error);
if (first + num > n(dim, type) || first + num < first)
isl_die(isl_space_get_ctx(dim), isl_error_invalid,
"index out of bounds", return isl_space_free(dim));
dim = isl_space_cow(dim);
if (!dim)
goto error;
if (dim->ids) {
dim = extend_ids(dim);
if (!dim)
goto error;
for (i = 0; i < num; ++i)
isl_id_free(get_id(dim, type, first + i));
for (i = first+num; i < n(dim, type); ++i)
set_id(dim, type, i - num, get_id(dim, type, i));
switch (type) {
case isl_dim_param:
get_ids(dim, isl_dim_in, 0, dim->n_in,
dim->ids + offset(dim, isl_dim_in) - num);
case isl_dim_in:
get_ids(dim, isl_dim_out, 0, dim->n_out,
dim->ids + offset(dim, isl_dim_out) - num);
default:
;
}
dim->n_id -= num;
}
switch (type) {
case isl_dim_param: dim->nparam -= num; break;
case isl_dim_in: dim->n_in -= num; break;
case isl_dim_out: dim->n_out -= num; break;
default: ;
}
dim = isl_space_reset(dim, type);
if (type == isl_dim_param) {
if (dim && dim->nested[0] &&
!(dim->nested[0] = isl_space_drop_dims(dim->nested[0],
isl_dim_param, first, num)))
goto error;
if (dim && dim->nested[1] &&
!(dim->nested[1] = isl_space_drop_dims(dim->nested[1],
isl_dim_param, first, num)))
goto error;
}
return dim;
error:
isl_space_free(dim);
return NULL;
}
__isl_give isl_space *isl_space_drop_inputs(__isl_take isl_space *dim,
unsigned first, unsigned n)
{
if (!dim)
return NULL;
return isl_space_drop_dims(dim, isl_dim_in, first, n);
}
__isl_give isl_space *isl_space_drop_outputs(__isl_take isl_space *dim,
unsigned first, unsigned n)
{
if (!dim)
return NULL;
return isl_space_drop_dims(dim, isl_dim_out, first, n);
}
__isl_give isl_space *isl_space_domain(__isl_take isl_space *dim)
{
if (!dim)
return NULL;
dim = isl_space_drop_outputs(dim, 0, dim->n_out);
dim = isl_space_reverse(dim);
dim = mark_as_set(dim);
return dim;
}
__isl_give isl_space *isl_space_from_domain(__isl_take isl_space *dim)
{
if (!dim)
return NULL;
if (!isl_space_is_set(dim))
isl_die(isl_space_get_ctx(dim), isl_error_invalid,
"not a set space", goto error);
dim = isl_space_reverse(dim);
dim = isl_space_reset(dim, isl_dim_out);
return dim;
error:
isl_space_free(dim);
return NULL;
}
__isl_give isl_space *isl_space_range(__isl_take isl_space *dim)
{
if (!dim)
return NULL;
dim = isl_space_drop_inputs(dim, 0, dim->n_in);
dim = mark_as_set(dim);
return dim;
}
__isl_give isl_space *isl_space_from_range(__isl_take isl_space *dim)
{
if (!dim)
return NULL;
if (!isl_space_is_set(dim))
isl_die(isl_space_get_ctx(dim), isl_error_invalid,
"not a set space", goto error);
return isl_space_reset(dim, isl_dim_in);
error:
isl_space_free(dim);
return NULL;
}
/* Given a map space A -> B, return the map space [A -> B] -> A.
*/
__isl_give isl_space *isl_space_domain_map(__isl_take isl_space *space)
{
isl_space *domain;
domain = isl_space_from_range(isl_space_domain(isl_space_copy(space)));
space = isl_space_from_domain(isl_space_wrap(space));
space = isl_space_join(space, domain);
return space;
}
/* Given a map space A -> B, return the map space [A -> B] -> B.
*/
__isl_give isl_space *isl_space_range_map(__isl_take isl_space *space)
{
isl_space *range;
range = isl_space_from_range(isl_space_range(isl_space_copy(space)));
space = isl_space_from_domain(isl_space_wrap(space));
space = isl_space_join(space, range);
return space;
}
__isl_give isl_space *isl_space_params(__isl_take isl_space *space)
{
if (isl_space_is_params(space))
return space;
space = isl_space_drop_dims(space,
isl_dim_in, 0, isl_space_dim(space, isl_dim_in));
space = isl_space_drop_dims(space,
isl_dim_out, 0, isl_space_dim(space, isl_dim_out));
space = mark_as_params(space);
return space;
}
__isl_give isl_space *isl_space_set_from_params(__isl_take isl_space *space)
{
if (!space)
return NULL;
if (!isl_space_is_params(space))
isl_die(isl_space_get_ctx(space), isl_error_invalid,
"not a parameter space", goto error);
return isl_space_reset(space, isl_dim_set);
error:
isl_space_free(space);
return NULL;
}
__isl_give isl_space *isl_space_as_set_space(__isl_take isl_space *dim)
{
dim = isl_space_cow(dim);
if (!dim)
return NULL;
dim->n_out += dim->n_in;
dim->n_in = 0;
dim = isl_space_reset(dim, isl_dim_in);
dim = isl_space_reset(dim, isl_dim_out);
return dim;
}
__isl_give isl_space *isl_space_underlying(__isl_take isl_space *dim,
unsigned n_div)
{
int i;
if (!dim)
return NULL;
if (n_div == 0 &&
dim->nparam == 0 && dim->n_in == 0 && dim->n_id == 0)
return isl_space_reset(isl_space_reset(dim, isl_dim_in), isl_dim_out);
dim = isl_space_cow(dim);
if (!dim)
return NULL;
dim->n_out += dim->nparam + dim->n_in + n_div;
dim->nparam = 0;
dim->n_in = 0;
for (i = 0; i < dim->n_id; ++i)
isl_id_free(get_id(dim, isl_dim_out, i));
dim->n_id = 0;
dim = isl_space_reset(dim, isl_dim_in);
dim = isl_space_reset(dim, isl_dim_out);
return dim;
}
/* Are the two spaces the same, including positions and names of parameters?
*/
int isl_space_is_equal(__isl_keep isl_space *dim1, __isl_keep isl_space *dim2)
{
if (!dim1 || !dim2)
return -1;
if (dim1 == dim2)
return 1;
return match(dim1, isl_dim_param, dim2, isl_dim_param) &&
isl_space_tuple_is_equal(dim1, isl_dim_in, dim2, isl_dim_in) &&
isl_space_tuple_is_equal(dim1, isl_dim_out, dim2, isl_dim_out);
}
/* Is space1 equal to the domain of space2?
*
* In the internal version we also allow space2 to be the space of a set,
* provided space1 is a parameter space.
*/
int isl_space_is_domain_internal(__isl_keep isl_space *space1,
__isl_keep isl_space *space2)
{
if (!space1 || !space2)
return -1;
if (!isl_space_is_set(space1))
return 0;
return match(space1, isl_dim_param, space2, isl_dim_param) &&
isl_space_tuple_is_equal(space1, isl_dim_set,
space2, isl_dim_in);
}
/* Is space1 equal to the domain of space2?
*/
int isl_space_is_domain(__isl_keep isl_space *space1,
__isl_keep isl_space *space2)
{
if (!space2)
return -1;
if (!isl_space_is_map(space2))
return 0;
return isl_space_is_domain_internal(space1, space2);
}
/* Is space1 equal to the range of space2?
*
* In the internal version, space2 is allowed to be the space of a set,
* in which case it should be equal to space1.
*/
int isl_space_is_range_internal(__isl_keep isl_space *space1,
__isl_keep isl_space *space2)
{
if (!space1 || !space2)
return -1;
if (!isl_space_is_set(space1))
return 0;
return match(space1, isl_dim_param, space2, isl_dim_param) &&
isl_space_tuple_is_equal(space1, isl_dim_set,
space2, isl_dim_out);
}
/* Is space1 equal to the range of space2?
*/
int isl_space_is_range(__isl_keep isl_space *space1,
__isl_keep isl_space *space2)
{
if (!space2)
return -1;
if (!isl_space_is_map(space2))
return 0;
return isl_space_is_range_internal(space1, space2);
}
int isl_space_compatible(__isl_keep isl_space *dim1,
__isl_keep isl_space *dim2)
{
return dim1->nparam == dim2->nparam &&
dim1->n_in + dim1->n_out == dim2->n_in + dim2->n_out;
}
static uint32_t isl_hash_dim(uint32_t hash, __isl_keep isl_space *dim)
{
int i;
isl_id *id;
if (!dim)
return hash;
isl_hash_byte(hash, dim->nparam % 256);
isl_hash_byte(hash, dim->n_in % 256);
isl_hash_byte(hash, dim->n_out % 256);
for (i = 0; i < dim->nparam; ++i) {
id = get_id(dim, isl_dim_param, i);
hash = isl_hash_id(hash, id);
}
id = tuple_id(dim, isl_dim_in);
hash = isl_hash_id(hash, id);
id = tuple_id(dim, isl_dim_out);
hash = isl_hash_id(hash, id);
hash = isl_hash_dim(hash, dim->nested[0]);
hash = isl_hash_dim(hash, dim->nested[1]);
return hash;
}
uint32_t isl_space_get_hash(__isl_keep isl_space *dim)
{
uint32_t hash;
if (!dim)
return 0;
hash = isl_hash_init();
hash = isl_hash_dim(hash, dim);
return hash;
}
int isl_space_is_wrapping(__isl_keep isl_space *dim)
{
if (!dim)
return -1;
if (!isl_space_is_set(dim))
return 0;
return dim->nested[1] != NULL;
}
/* Is "space" the space of a map where the domain is a wrapped map space?
*/
int isl_space_domain_is_wrapping(__isl_keep isl_space *space)
{
if (!space)
return -1;
if (isl_space_is_set(space))
return 0;
return space->nested[0] != NULL;
}
/* Is "space" the space of a map where the range is a wrapped map space?
*/
int isl_space_range_is_wrapping(__isl_keep isl_space *space)
{
if (!space)
return -1;
if (isl_space_is_set(space))
return 0;
return space->nested[1] != NULL;
}
__isl_give isl_space *isl_space_wrap(__isl_take isl_space *dim)
{
isl_space *wrap;
if (!dim)
return NULL;
wrap = isl_space_set_alloc(dim->ctx,
dim->nparam, dim->n_in + dim->n_out);
wrap = copy_ids(wrap, isl_dim_param, 0, dim, isl_dim_param);
wrap = copy_ids(wrap, isl_dim_set, 0, dim, isl_dim_in);
wrap = copy_ids(wrap, isl_dim_set, dim->n_in, dim, isl_dim_out);
if (!wrap)
goto error;
wrap->nested[1] = dim;
return wrap;
error:
isl_space_free(dim);
return NULL;
}
__isl_give isl_space *isl_space_unwrap(__isl_take isl_space *dim)
{
isl_space *unwrap;
if (!dim)
return NULL;
if (!isl_space_is_wrapping(dim))
isl_die(dim->ctx, isl_error_invalid, "not a wrapping space",
goto error);
unwrap = isl_space_copy(dim->nested[1]);
isl_space_free(dim);
return unwrap;
error:
isl_space_free(dim);
return NULL;
}
int isl_space_is_named_or_nested(__isl_keep isl_space *dim, enum isl_dim_type type)
{
if (type != isl_dim_in && type != isl_dim_out)
return 0;
if (!dim)
return -1;
if (dim->tuple_id[type - isl_dim_in])
return 1;
if (dim->nested[type - isl_dim_in])
return 1;
return 0;
}
int isl_space_may_be_set(__isl_keep isl_space *dim)
{
if (!dim)
return -1;
if (isl_space_is_set(dim))
return 1;
if (isl_space_dim(dim, isl_dim_in) != 0)
return 0;
if (isl_space_is_named_or_nested(dim, isl_dim_in))
return 0;
return 1;
}
__isl_give isl_space *isl_space_reset(__isl_take isl_space *dim,
enum isl_dim_type type)
{
if (!isl_space_is_named_or_nested(dim, type))
return dim;
dim = isl_space_cow(dim);
if (!dim)
return NULL;
isl_id_free(dim->tuple_id[type - isl_dim_in]);
dim->tuple_id[type - isl_dim_in] = NULL;
isl_space_free(dim->nested[type - isl_dim_in]);
dim->nested[type - isl_dim_in] = NULL;
return dim;
}
__isl_give isl_space *isl_space_flatten(__isl_take isl_space *dim)
{
if (!dim)
return NULL;
if (!dim->nested[0] && !dim->nested[1])
return dim;
if (dim->nested[0])
dim = isl_space_reset(dim, isl_dim_in);
if (dim && dim->nested[1])
dim = isl_space_reset(dim, isl_dim_out);
return dim;
}
__isl_give isl_space *isl_space_flatten_domain(__isl_take isl_space *dim)
{
if (!dim)
return NULL;
if (!dim->nested[0])
return dim;
return isl_space_reset(dim, isl_dim_in);
}
__isl_give isl_space *isl_space_flatten_range(__isl_take isl_space *dim)
{
if (!dim)
return NULL;
if (!dim->nested[1])
return dim;
return isl_space_reset(dim, isl_dim_out);
}
/* Replace the dimensions of the given type of dst by those of src.
*/
__isl_give isl_space *isl_space_replace(__isl_take isl_space *dst,
enum isl_dim_type type, __isl_keep isl_space *src)
{
dst = isl_space_cow(dst);
if (!dst || !src)
goto error;
dst = isl_space_drop_dims(dst, type, 0, isl_space_dim(dst, type));
dst = isl_space_add_dims(dst, type, isl_space_dim(src, type));
dst = copy_ids(dst, type, 0, src, type);
if (dst && type == isl_dim_param) {
int i;
for (i = 0; i <= 1; ++i) {
if (!dst->nested[i])
continue;
dst->nested[i] = isl_space_replace(dst->nested[i],
type, src);
if (!dst->nested[i])
goto error;
}
}
return dst;
error:
isl_space_free(dst);
return NULL;
}
/* Given a dimension specification "dim" of a set, create a dimension
* specification for the lift of the set. In particular, the result
* is of the form [dim -> local[..]], with n_local variables in the
* range of the wrapped map.
*/
__isl_give isl_space *isl_space_lift(__isl_take isl_space *dim, unsigned n_local)
{
isl_space *local_dim;
if (!dim)
return NULL;
local_dim = isl_space_dup(dim);
local_dim = isl_space_drop_dims(local_dim, isl_dim_set, 0, dim->n_out);
local_dim = isl_space_add_dims(local_dim, isl_dim_set, n_local);
local_dim = isl_space_set_tuple_name(local_dim, isl_dim_set, "local");
dim = isl_space_join(isl_space_from_domain(dim),
isl_space_from_range(local_dim));
dim = isl_space_wrap(dim);
dim = isl_space_set_tuple_name(dim, isl_dim_set, "lifted");
return dim;
}
int isl_space_can_zip(__isl_keep isl_space *dim)
{
if (!dim)
return -1;
return dim->nested[0] && dim->nested[1];
}
__isl_give isl_space *isl_space_zip(__isl_take isl_space *dim)
{
isl_space *dom, *ran;
isl_space *dom_dom, *dom_ran, *ran_dom, *ran_ran;
if (!isl_space_can_zip(dim))
isl_die(dim->ctx, isl_error_invalid, "dim cannot be zipped",
goto error);
if (!dim)
return NULL;
dom = isl_space_unwrap(isl_space_domain(isl_space_copy(dim)));
ran = isl_space_unwrap(isl_space_range(dim));
dom_dom = isl_space_domain(isl_space_copy(dom));
dom_ran = isl_space_range(dom);
ran_dom = isl_space_domain(isl_space_copy(ran));
ran_ran = isl_space_range(ran);
dom = isl_space_join(isl_space_from_domain(dom_dom),
isl_space_from_range(ran_dom));
ran = isl_space_join(isl_space_from_domain(dom_ran),
isl_space_from_range(ran_ran));
return isl_space_join(isl_space_from_domain(isl_space_wrap(dom)),
isl_space_from_range(isl_space_wrap(ran)));
error:
isl_space_free(dim);
return NULL;
}
/* Can we apply isl_space_curry to "space"?
* That is, does it have a nested relation in its domain?
*/
int isl_space_can_curry(__isl_keep isl_space *space)
{
if (!space)
return -1;
return !!space->nested[0];
}
/* Given a space (A -> B) -> C, return the corresponding space
* A -> (B -> C).
*/
__isl_give isl_space *isl_space_curry(__isl_take isl_space *space)
{
isl_space *dom, *ran;
isl_space *dom_dom, *dom_ran;
if (!space)
return NULL;
if (!isl_space_can_curry(space))
isl_die(space->ctx, isl_error_invalid,
"space cannot be curried", goto error);
dom = isl_space_unwrap(isl_space_domain(isl_space_copy(space)));
ran = isl_space_range(space);
dom_dom = isl_space_domain(isl_space_copy(dom));
dom_ran = isl_space_range(dom);
ran = isl_space_join(isl_space_from_domain(dom_ran),
isl_space_from_range(ran));
return isl_space_join(isl_space_from_domain(dom_dom),
isl_space_from_range(isl_space_wrap(ran)));
error:
isl_space_free(space);
return NULL;
}
/* Can we apply isl_space_uncurry to "space"?
* That is, does it have a nested relation in its range?
*/
int isl_space_can_uncurry(__isl_keep isl_space *space)
{
if (!space)
return -1;
return !!space->nested[1];
}
/* Given a space A -> (B -> C), return the corresponding space
* (A -> B) -> C.
*/
__isl_give isl_space *isl_space_uncurry(__isl_take isl_space *space)
{
isl_space *dom, *ran;
isl_space *ran_dom, *ran_ran;
if (!space)
return NULL;
if (!isl_space_can_uncurry(space))
isl_die(space->ctx, isl_error_invalid,
"space cannot be uncurried",
return isl_space_free(space));
dom = isl_space_domain(isl_space_copy(space));
ran = isl_space_unwrap(isl_space_range(space));
ran_dom = isl_space_domain(isl_space_copy(ran));
ran_ran = isl_space_range(ran);
dom = isl_space_join(isl_space_from_domain(dom),
isl_space_from_range(ran_dom));
return isl_space_join(isl_space_from_domain(isl_space_wrap(dom)),
isl_space_from_range(ran_ran));
}
int isl_space_has_named_params(__isl_keep isl_space *dim)
{
int i;
unsigned off;
if (!dim)
return -1;
if (dim->nparam == 0)
return 1;
off = isl_space_offset(dim, isl_dim_param);
if (off + dim->nparam > dim->n_id)
return 0;
for (i = 0; i < dim->nparam; ++i)
if (!dim->ids[off + i])
return 0;
return 1;
}
/* Align the initial parameters of dim1 to match the order in dim2.
*/
__isl_give isl_space *isl_space_align_params(__isl_take isl_space *dim1,
__isl_take isl_space *dim2)
{
isl_reordering *exp;
if (!isl_space_has_named_params(dim1) || !isl_space_has_named_params(dim2))
isl_die(isl_space_get_ctx(dim1), isl_error_invalid,
"parameter alignment requires named parameters",
goto error);
dim2 = isl_space_params(dim2);
exp = isl_parameter_alignment_reordering(dim1, dim2);
exp = isl_reordering_extend_space(exp, dim1);
isl_space_free(dim2);
if (!exp)
return NULL;
dim1 = isl_space_copy(exp->dim);
isl_reordering_free(exp);
return dim1;
error:
isl_space_free(dim1);
isl_space_free(dim2);
return NULL;
}
/* Given the space of set (domain), construct a space for a map
* with as domain the given space and as range the range of "model".
*/
__isl_give isl_space *isl_space_extend_domain_with_range(
__isl_take isl_space *space, __isl_take isl_space *model)
{
if (!model)
goto error;
space = isl_space_from_domain(space);
space = isl_space_add_dims(space, isl_dim_out,
isl_space_dim(model, isl_dim_out));
if (isl_space_has_tuple_id(model, isl_dim_out))
space = isl_space_set_tuple_id(space, isl_dim_out,
isl_space_get_tuple_id(model, isl_dim_out));
if (!space)
goto error;
if (model->nested[1]) {
isl_space *nested = isl_space_copy(model->nested[1]);
int n_nested, n_space;
nested = isl_space_align_params(nested, isl_space_copy(space));
n_nested = isl_space_dim(nested, isl_dim_param);
n_space = isl_space_dim(space, isl_dim_param);
if (n_nested > n_space)
nested = isl_space_drop_dims(nested, isl_dim_param,
n_space, n_nested - n_space);
if (!nested)
goto error;
space->nested[1] = nested;
}
isl_space_free(model);
return space;
error:
isl_space_free(model);
isl_space_free(space);
return NULL;
}
/* Compare the "type" dimensions of two isl_spaces.
*
* The order is fairly arbitrary.
*/
static int isl_space_cmp_type(__isl_keep isl_space *space1,
__isl_keep isl_space *space2, enum isl_dim_type type)
{
int cmp;
isl_space *nested1, *nested2;
if (isl_space_dim(space1, type) != isl_space_dim(space2, type))
return isl_space_dim(space1, type) -
isl_space_dim(space2, type);
cmp = isl_id_cmp(tuple_id(space1, type), tuple_id(space2, type));
if (cmp != 0)
return cmp;
nested1 = nested(space1, type);
nested2 = nested(space2, type);
if (!nested1 != !nested2)
return !nested1 - !nested2;
if (nested1)
return isl_space_cmp(nested1, nested2);
return 0;
}
/* Compare two isl_spaces.
*
* The order is fairly arbitrary.
*/
int isl_space_cmp(__isl_keep isl_space *space1, __isl_keep isl_space *space2)
{
int i;
int cmp;
if (space1 == space2)
return 0;
if (!space1)
return -1;
if (!space2)
return 1;
cmp = isl_space_cmp_type(space1, space2, isl_dim_param);
if (cmp != 0)
return cmp;
cmp = isl_space_cmp_type(space1, space2, isl_dim_in);
if (cmp != 0)
return cmp;
cmp = isl_space_cmp_type(space1, space2, isl_dim_out);
if (cmp != 0)
return cmp;
if (!space1->ids && !space2->ids)
return 0;
for (i = 0; i < n(space1, isl_dim_param); ++i) {
cmp = isl_id_cmp(get_id(space1, isl_dim_param, i),
get_id(space2, isl_dim_param, i));
if (cmp != 0)
return cmp;
}
return 0;
}