| /* |
| * 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? |
| */ |
| isl_bool isl_space_is_set(__isl_keep isl_space *space) |
| { |
| if (!space) |
| return isl_bool_error; |
| if (space->n_in != 0 || space->nested[0]) |
| return isl_bool_false; |
| if (space->tuple_id[0] != &isl_id_none) |
| return isl_bool_false; |
| return isl_bool_true; |
| } |
| |
| /* Is the given space that of a map? |
| */ |
| isl_bool isl_space_is_map(__isl_keep isl_space *space) |
| { |
| if (!space) |
| return isl_bool_error; |
| 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? |
| */ |
| isl_bool isl_space_is_params(__isl_keep isl_space *space) |
| { |
| if (!space) |
| return isl_bool_error; |
| if (space->n_in != 0 || space->nested[0] || |
| space->n_out != 0 || space->nested[1]) |
| return isl_bool_false; |
| if (space->tuple_id[0] != &isl_id_none) |
| return isl_bool_false; |
| if (space->tuple_id[1] != &isl_id_none) |
| return isl_bool_false; |
| return isl_bool_true; |
| } |
| |
| /* 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? |
| */ |
| isl_bool isl_space_has_tuple_id(__isl_keep isl_space *dim, |
| enum isl_dim_type type) |
| { |
| if (!space_can_have_id(dim, type)) |
| return isl_bool_error; |
| 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; |
| } |
| |
| isl_bool isl_space_has_dim_id(__isl_keep isl_space *dim, |
| enum isl_dim_type type, unsigned pos) |
| { |
| if (!dim) |
| return isl_bool_error; |
| 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? |
| */ |
| isl_bool 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 isl_bool_error; |
| id = space->tuple_id[type - isl_dim_in]; |
| return id && id->name; |
| } |
| |
| __isl_keep 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? |
| */ |
| isl_bool isl_space_has_dim_name(__isl_keep isl_space *space, |
| enum isl_dim_type type, unsigned pos) |
| { |
| isl_id *id; |
| |
| if (!space) |
| return isl_bool_error; |
| 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) { |
| isl_id *id = get_id(space, type, i); |
| if (id && id->name && !strcmp(id->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? |
| */ |
| isl_bool isl_space_has_equal_tuples(__isl_keep isl_space *space1, |
| __isl_keep isl_space *space2) |
| { |
| if (!space1 || !space2) |
| return isl_bool_error; |
| if (space1 == space2) |
| return isl_bool_true; |
| 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. |
| */ |
| isl_bool 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 isl_bool_error; |
| |
| if (space1 == space2 && type1 == type2) |
| return isl_bool_true; |
| |
| if (n(space1, type1) != n(space2, type2)) |
| return isl_bool_false; |
| id1 = tuple_id(space1, type1); |
| id2 = tuple_id(space2, type2); |
| if (!id1 ^ !id2) |
| return isl_bool_false; |
| if (id1 && id1 != id2) |
| return isl_bool_false; |
| nested1 = nested(space1, type1); |
| nested2 = nested(space2, type2); |
| if (!nested1 ^ !nested2) |
| return isl_bool_false; |
| if (nested1 && !isl_space_has_equal_tuples(nested1, nested2)) |
| return isl_bool_false; |
| return isl_bool_true; |
| } |
| |
| static isl_bool match(__isl_keep isl_space *space1, enum isl_dim_type type1, |
| __isl_keep isl_space *space2, enum isl_dim_type type2) |
| { |
| int i; |
| |
| if (space1 == space2 && type1 == type2) |
| return isl_bool_true; |
| |
| if (!isl_space_tuple_is_equal(space1, type1, space2, type2)) |
| return isl_bool_false; |
| |
| if (!space1->ids && !space2->ids) |
| return isl_bool_true; |
| |
| for (i = 0; i < n(space1, type1); ++i) { |
| if (get_id(space1, type1, i) != get_id(space2, type2, i)) |
| return isl_bool_false; |
| } |
| return isl_bool_true; |
| } |
| |
| /* Do "space1" and "space2" have the same parameters? |
| */ |
| isl_bool isl_space_has_equal_params(__isl_keep isl_space *space1, |
| __isl_keep isl_space *space2) |
| { |
| if (!space1 || !space2) |
| return isl_bool_error; |
| |
| return match(space1, isl_dim_param, space2, isl_dim_param); |
| } |
| |
| /* Do "space1" and "space2" have the same identifiers for all |
| * the tuple variables? |
| */ |
| isl_bool isl_space_has_equal_ids(__isl_keep isl_space *space1, |
| __isl_keep isl_space *space2) |
| { |
| isl_bool equal; |
| |
| if (!space1 || !space2) |
| return isl_bool_error; |
| |
| equal = match(space1, isl_dim_in, space2, isl_dim_in); |
| if (equal < 0 || !equal) |
| return equal; |
| return match(space1, isl_dim_out, space2, isl_dim_out); |
| } |
| |
| isl_bool isl_space_match(__isl_keep isl_space *space1, enum isl_dim_type type1, |
| __isl_keep isl_space *space2, enum isl_dim_type type2) |
| { |
| if (!space1 || !space2) |
| return isl_bool_error; |
| |
| return match(space1, type1, space2, type2); |
| } |
| |
| 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); |
| } |
| |
| static __isl_give isl_space *space_extend(__isl_take isl_space *space, |
| unsigned nparam, unsigned n_in, unsigned n_out) |
| { |
| isl_id **ids = NULL; |
| |
| if (!space) |
| return NULL; |
| if (space->nparam == nparam && |
| space->n_in == n_in && space->n_out == n_out) |
| return space; |
| |
| isl_assert(space->ctx, space->nparam <= nparam, goto error); |
| isl_assert(space->ctx, space->n_in <= n_in, goto error); |
| isl_assert(space->ctx, space->n_out <= n_out, goto error); |
| |
| space = isl_space_cow(space); |
| if (!space) |
| goto error; |
| |
| if (space->ids) { |
| unsigned n; |
| n = nparam + n_in + n_out; |
| if (n < nparam || n < n_in || n < n_out) |
| isl_die(isl_space_get_ctx(space), isl_error_invalid, |
| "overflow in total number of dimensions", |
| goto error); |
| ids = isl_calloc_array(space->ctx, isl_id *, n); |
| if (!ids) |
| goto error; |
| get_ids(space, isl_dim_param, 0, space->nparam, ids); |
| get_ids(space, isl_dim_in, 0, space->n_in, ids + nparam); |
| get_ids(space, isl_dim_out, 0, space->n_out, |
| ids + nparam + n_in); |
| free(space->ids); |
| space->ids = ids; |
| space->n_id = nparam + n_in + n_out; |
| } |
| space->nparam = nparam; |
| space->n_in = n_in; |
| space->n_out = n_out; |
| |
| return space; |
| error: |
| free(ids); |
| isl_space_free(space); |
| return NULL; |
| } |
| |
| __isl_give isl_space *isl_space_extend(__isl_take isl_space *space, |
| unsigned nparam, unsigned n_in, unsigned n_out) |
| { |
| return space_extend(space, nparam, n_in, n_out); |
| } |
| |
| __isl_give isl_space *isl_space_add_dims(__isl_take isl_space *space, |
| enum isl_dim_type type, unsigned n) |
| { |
| space = isl_space_reset(space, type); |
| if (!space) |
| return NULL; |
| switch (type) { |
| case isl_dim_param: |
| space = space_extend(space, |
| space->nparam + n, space->n_in, space->n_out); |
| if (space && space->nested[0] && |
| !(space->nested[0] = isl_space_add_dims(space->nested[0], |
| isl_dim_param, n))) |
| goto error; |
| if (space && space->nested[1] && |
| !(space->nested[1] = isl_space_add_dims(space->nested[1], |
| isl_dim_param, n))) |
| goto error; |
| return space; |
| case isl_dim_in: |
| return space_extend(space, |
| space->nparam, space->n_in + n, space->n_out); |
| case isl_dim_out: |
| return space_extend(space, |
| space->nparam, space->n_in, space->n_out + n); |
| default: |
| isl_die(space->ctx, isl_error_invalid, |
| "cannot add dimensions of specified type", goto error); |
| } |
| error: |
| isl_space_free(space); |
| return NULL; |
| } |
| |
| /* Add a parameter with identifier "id" to "space", provided |
| * it does not already appear in "space". |
| */ |
| __isl_give isl_space *isl_space_add_param_id(__isl_take isl_space *space, |
| __isl_take isl_id *id) |
| { |
| int pos; |
| |
| if (!space || !id) |
| goto error; |
| |
| if (isl_space_find_dim_by_id(space, isl_dim_param, id) >= 0) { |
| isl_id_free(id); |
| return space; |
| } |
| |
| pos = isl_space_dim(space, isl_dim_param); |
| space = isl_space_add_dims(space, isl_dim_param, 1); |
| space = isl_space_set_dim_id(space, isl_dim_param, pos, id); |
| |
| return space; |
| error: |
| isl_space_free(space); |
| isl_id_free(id); |
| 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 *space, |
| enum isl_dim_type dst_type, unsigned dst_pos, |
| enum isl_dim_type src_type, unsigned src_pos, unsigned n) |
| { |
| int i; |
| |
| space = isl_space_reset(space, src_type); |
| space = isl_space_reset(space, dst_type); |
| if (!space) |
| return NULL; |
| if (n == 0) |
| return space; |
| |
| isl_assert(space->ctx, src_pos + n <= isl_space_dim(space, src_type), |
| goto error); |
| |
| if (dst_type == src_type && dst_pos == src_pos) |
| return space; |
| |
| isl_assert(space->ctx, dst_type != src_type, goto error); |
| |
| space = isl_space_cow(space); |
| if (!space) |
| return NULL; |
| |
| if (space->ids) { |
| isl_id **ids; |
| enum isl_dim_type t, o = isl_dim_param; |
| int off; |
| int s[3]; |
| ids = isl_calloc_array(space->ctx, isl_id *, |
| space->nparam + space->n_in + space->n_out); |
| if (!ids) |
| goto error; |
| off = 0; |
| s[isl_dim_param - o] = space->nparam; |
| s[isl_dim_in - o] = space->n_in; |
| s[isl_dim_out - o] = space->n_out; |
| for (t = isl_dim_param; t <= isl_dim_out; ++t) { |
| if (t == dst_type) { |
| get_ids(space, t, 0, dst_pos, ids + off); |
| off += dst_pos; |
| get_ids(space, src_type, src_pos, n, ids + off); |
| off += n; |
| get_ids(space, t, dst_pos, s[t - o] - dst_pos, |
| ids + off); |
| off += s[t - o] - dst_pos; |
| } else if (t == src_type) { |
| get_ids(space, t, 0, src_pos, ids + off); |
| off += src_pos; |
| get_ids(space, t, src_pos + n, |
| s[t - o] - src_pos - n, ids + off); |
| off += s[t - o] - src_pos - n; |
| } else { |
| get_ids(space, t, 0, s[t - o], ids + off); |
| off += s[t - o]; |
| } |
| } |
| free(space->ids); |
| space->ids = ids; |
| space->n_id = space->nparam + space->n_in + space->n_out; |
| } |
| |
| switch (dst_type) { |
| case isl_dim_param: space->nparam += n; break; |
| case isl_dim_in: space->n_in += n; break; |
| case isl_dim_out: space->n_out += n; break; |
| default: ; |
| } |
| |
| switch (src_type) { |
| case isl_dim_param: space->nparam -= n; break; |
| case isl_dim_in: space->n_in -= n; break; |
| case isl_dim_out: space->n_out -= n; break; |
| default: ; |
| } |
| |
| if (dst_type != isl_dim_param && src_type != isl_dim_param) |
| return space; |
| |
| for (i = 0; i < 2; ++i) { |
| if (!space->nested[i]) |
| continue; |
| space->nested[i] = isl_space_replace_params(space->nested[i], |
| space); |
| if (!space->nested[i]) |
| goto error; |
| } |
| |
| return space; |
| error: |
| isl_space_free(space); |
| return NULL; |
| } |
| |
| /* Check that "space1" and "space2" have the same parameters, |
| * reporting an error if they do not. |
| */ |
| isl_stat isl_space_check_equal_params(__isl_keep isl_space *space1, |
| __isl_keep isl_space *space2) |
| { |
| isl_bool equal; |
| |
| equal = isl_space_has_equal_params(space1, space2); |
| if (equal < 0) |
| return isl_stat_error; |
| if (!equal) |
| isl_die(isl_space_get_ctx(space1), isl_error_invalid, |
| "parameters need to match", return isl_stat_error); |
| return isl_stat_ok; |
| } |
| |
| __isl_give isl_space *isl_space_join(__isl_take isl_space *left, |
| __isl_take isl_space *right) |
| { |
| isl_space *dim; |
| |
| if (isl_space_check_equal_params(left, right) < 0) |
| 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); |
| |
| if (isl_space_check_equal_params(left, right) < 0) |
| 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 (isl_space_check_equal_params(left, right) < 0) |
| 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 (isl_space_check_equal_params(left, right) < 0) |
| 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(domain, 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 B -> C. |
| */ |
| __isl_give isl_space *isl_space_domain_factor_range( |
| __isl_take isl_space *space) |
| { |
| isl_space *nested; |
| isl_space *range; |
| |
| 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]; |
| range = isl_space_copy(space); |
| range = isl_space_drop_dims(range, isl_dim_in, 0, nested->n_in); |
| if (!range) |
| return isl_space_free(space); |
| if (nested->tuple_id[1]) { |
| range->tuple_id[0] = isl_id_copy(nested->tuple_id[1]); |
| if (!range->tuple_id[0]) |
| goto error; |
| } |
| if (nested->nested[1]) { |
| range->nested[0] = isl_space_copy(nested->nested[1]); |
| if (!range->nested[0]) |
| goto error; |
| } |
| |
| isl_space_free(space); |
| return range; |
| error: |
| isl_space_free(space); |
| isl_space_free(range); |
| return NULL; |
| } |
| |
| /* Internal function that selects the domain of the map that is |
| * embedded in either a set space or the range of a map space. |
| * In particular, given a space of the form [A -> B], return the space A. |
| * Given a space of the form A -> [B -> C], return the space A -> B. |
| */ |
| static __isl_give isl_space *range_factor_domain(__isl_take isl_space *space) |
| { |
| isl_space *nested; |
| isl_space *domain; |
| |
| if (!space) |
| return NULL; |
| |
| nested = space->nested[1]; |
| domain = isl_space_copy(space); |
| domain = isl_space_drop_dims(domain, 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 -> B. |
| */ |
| __isl_give isl_space *isl_space_range_factor_domain( |
| __isl_take isl_space *space) |
| { |
| 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)); |
| |
| return range_factor_domain(space); |
| } |
| |
| /* Given a space of the form [A -> B], return the space A. |
| */ |
| static __isl_give isl_space *set_factor_domain(__isl_take isl_space *space) |
| { |
| if (!space) |
| return NULL; |
| if (!isl_space_is_wrapping(space)) |
| isl_die(isl_space_get_ctx(space), isl_error_invalid, |
| "not a product", return isl_space_free(space)); |
| |
| return range_factor_domain(space); |
| } |
| |
| /* Given a space of the form [A -> B] -> [C -> D], return the space A -> C. |
| * Given a space of the form [A -> B], return the space A. |
| */ |
| __isl_give isl_space *isl_space_factor_domain(__isl_take isl_space *space) |
| { |
| if (!space) |
| return NULL; |
| if (isl_space_is_set(space)) |
| return set_factor_domain(space); |
| space = isl_space_domain_factor_domain(space); |
| space = isl_space_range_factor_domain(space); |
| return space; |
| } |
| |
| /* Internal function that selects the range of the map that is |
| * embedded in either a set space or the range of a map space. |
| * In particular, given a space of the form [A -> B], return the space B. |
| * Given a space of the form A -> [B -> C], return the space A -> C. |
| */ |
| static __isl_give isl_space *range_factor_range(__isl_take isl_space *space) |
| { |
| isl_space *nested; |
| isl_space *range; |
| |
| if (!space) |
| return NULL; |
| |
| nested = space->nested[1]; |
| range = isl_space_copy(space); |
| range = isl_space_drop_dims(range, 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; |
| } |
| |
| /* 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) |
| { |
| 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)); |
| |
| return range_factor_range(space); |
| } |
| |
| /* Given a space of the form [A -> B], return the space B. |
| */ |
| static __isl_give isl_space *set_factor_range(__isl_take isl_space *space) |
| { |
| if (!space) |
| return NULL; |
| if (!isl_space_is_wrapping(space)) |
| isl_die(isl_space_get_ctx(space), isl_error_invalid, |
| "not a product", return isl_space_free(space)); |
| |
| return range_factor_range(space); |
| } |
| |
| /* Given a space of the form [A -> B] -> [C -> D], return the space B -> D. |
| * Given a space of the form [A -> B], return the space B. |
| */ |
| __isl_give isl_space *isl_space_factor_range(__isl_take isl_space *space) |
| { |
| if (!space) |
| return NULL; |
| if (isl_space_is_set(space)) |
| return set_factor_range(space); |
| space = isl_space_domain_factor_range(space); |
| space = isl_space_range_factor_range(space); |
| return space; |
| } |
| |
| __isl_give isl_space *isl_space_map_from_set(__isl_take isl_space *space) |
| { |
| isl_ctx *ctx; |
| isl_id **ids = NULL; |
| int n_id; |
| |
| if (!space) |
| return NULL; |
| ctx = isl_space_get_ctx(space); |
| if (!isl_space_is_set(space)) |
| isl_die(ctx, isl_error_invalid, "not a set space", goto error); |
| space = isl_space_cow(space); |
| if (!space) |
| return NULL; |
| n_id = space->nparam + space->n_out + space->n_out; |
| if (n_id > 0 && space->ids) { |
| ids = isl_calloc_array(space->ctx, isl_id *, n_id); |
| if (!ids) |
| goto error; |
| get_ids(space, isl_dim_param, 0, space->nparam, ids); |
| get_ids(space, isl_dim_out, 0, space->n_out, |
| ids + space->nparam); |
| } |
| space->n_in = space->n_out; |
| if (ids) { |
| free(space->ids); |
| space->ids = ids; |
| space->n_id = n_id; |
| space = copy_ids(space, isl_dim_out, 0, space, isl_dim_in); |
| } |
| isl_id_free(space->tuple_id[0]); |
| space->tuple_id[0] = isl_id_copy(space->tuple_id[1]); |
| isl_space_free(space->nested[0]); |
| space->nested[0] = isl_space_copy(space->nested[1]); |
| return space; |
| error: |
| isl_space_free(space); |
| 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 *space) |
| { |
| if (!space) |
| return NULL; |
| space = isl_space_drop_dims(space, isl_dim_out, 0, space->n_out); |
| space = isl_space_reverse(space); |
| space = mark_as_set(space); |
| return space; |
| } |
| |
| __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 *space) |
| { |
| if (!space) |
| return NULL; |
| space = isl_space_drop_dims(space, isl_dim_in, 0, space->n_in); |
| space = mark_as_set(space); |
| return space; |
| } |
| |
| __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_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? |
| */ |
| isl_bool isl_space_is_equal(__isl_keep isl_space *space1, |
| __isl_keep isl_space *space2) |
| { |
| isl_bool equal; |
| |
| if (!space1 || !space2) |
| return isl_bool_error; |
| if (space1 == space2) |
| return isl_bool_true; |
| equal = isl_space_has_equal_params(space1, space2); |
| if (equal < 0 || !equal) |
| return equal; |
| return isl_space_has_equal_tuples(space1, space2); |
| } |
| |
| /* Do the tuples of "space1" correspond to those of the domain of "space2"? |
| * That is, is "space1" eqaul to the domain of "space2", ignoring parameters. |
| * |
| * "space2" is allowed to be a set space, in which case "space1" |
| * should be a parameter space. |
| */ |
| isl_bool isl_space_has_domain_tuples(__isl_keep isl_space *space1, |
| __isl_keep isl_space *space2) |
| { |
| isl_bool is_set; |
| |
| is_set = isl_space_is_set(space1); |
| if (is_set < 0 || !is_set) |
| return is_set; |
| return isl_space_tuple_is_equal(space1, isl_dim_set, |
| space2, isl_dim_in); |
| } |
| |
| /* 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. |
| */ |
| isl_bool isl_space_is_domain_internal(__isl_keep isl_space *space1, |
| __isl_keep isl_space *space2) |
| { |
| isl_bool equal_params; |
| |
| if (!space1 || !space2) |
| return isl_bool_error; |
| equal_params = isl_space_has_equal_params(space1, space2); |
| if (equal_params < 0 || !equal_params) |
| return equal_params; |
| return isl_space_has_domain_tuples(space1, space2); |
| } |
| |
| /* Is space1 equal to the domain of space2? |
| */ |
| isl_bool isl_space_is_domain(__isl_keep isl_space *space1, |
| __isl_keep isl_space *space2) |
| { |
| if (!space2) |
| return isl_bool_error; |
| if (!isl_space_is_map(space2)) |
| return isl_bool_false; |
| 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. |
| */ |
| isl_bool isl_space_is_range_internal(__isl_keep isl_space *space1, |
| __isl_keep isl_space *space2) |
| { |
| isl_bool equal_params; |
| |
| if (!space1 || !space2) |
| return isl_bool_error; |
| if (!isl_space_is_set(space1)) |
| return isl_bool_false; |
| equal_params = isl_space_has_equal_params(space1, space2); |
| if (equal_params < 0 || !equal_params) |
| return equal_params; |
| return isl_space_tuple_is_equal(space1, isl_dim_set, |
| space2, isl_dim_out); |
| } |
| |
| /* Is space1 equal to the range of space2? |
| */ |
| isl_bool isl_space_is_range(__isl_keep isl_space *space1, |
| __isl_keep isl_space *space2) |
| { |
| if (!space2) |
| return isl_bool_error; |
| if (!isl_space_is_map(space2)) |
| return isl_bool_false; |
| return isl_space_is_range_internal(space1, space2); |
| } |
| |
| /* Update "hash" by hashing in the parameters of "space". |
| */ |
| static uint32_t isl_hash_params(uint32_t hash, __isl_keep isl_space *space) |
| { |
| int i; |
| isl_id *id; |
| |
| if (!space) |
| return hash; |
| |
| isl_hash_byte(hash, space->nparam % 256); |
| |
| for (i = 0; i < space->nparam; ++i) { |
| id = get_id(space, isl_dim_param, i); |
| hash = isl_hash_id(hash, id); |
| } |
| |
| return hash; |
| } |
| |
| /* Update "hash" by hashing in the tuples of "space". |
| * Changes in this function should be reflected in isl_hash_tuples_domain. |
| */ |
| static uint32_t isl_hash_tuples(uint32_t hash, __isl_keep isl_space *space) |
| { |
| isl_id *id; |
| |
| if (!space) |
| return hash; |
| |
| isl_hash_byte(hash, space->n_in % 256); |
| isl_hash_byte(hash, space->n_out % 256); |
| |
| id = tuple_id(space, isl_dim_in); |
| hash = isl_hash_id(hash, id); |
| id = tuple_id(space, isl_dim_out); |
| hash = isl_hash_id(hash, id); |
| |
| hash = isl_hash_tuples(hash, space->nested[0]); |
| hash = isl_hash_tuples(hash, space->nested[1]); |
| |
| return hash; |
| } |
| |
| /* Update "hash" by hashing in the domain tuple of "space". |
| * The result of this function is equal to the result of applying |
| * isl_hash_tuples to the domain of "space". |
| */ |
| static uint32_t isl_hash_tuples_domain(uint32_t hash, |
| __isl_keep isl_space *space) |
| { |
| isl_id *id; |
| |
| if (!space) |
| return hash; |
| |
| isl_hash_byte(hash, 0); |
| isl_hash_byte(hash, space->n_in % 256); |
| |
| hash = isl_hash_id(hash, &isl_id_none); |
| id = tuple_id(space, isl_dim_in); |
| hash = isl_hash_id(hash, id); |
| |
| hash = isl_hash_tuples(hash, space->nested[0]); |
| |
| return hash; |
| } |
| |
| /* Return a hash value that digests the tuples of "space", |
| * i.e., that ignores the parameters. |
| */ |
| uint32_t isl_space_get_tuple_hash(__isl_keep isl_space *space) |
| { |
| uint32_t hash; |
| |
| if (!space) |
| return 0; |
| |
| hash = isl_hash_init(); |
| hash = isl_hash_tuples(hash, space); |
| |
| return hash; |
| } |
| |
| uint32_t isl_space_get_hash(__isl_keep isl_space *space) |
| { |
| uint32_t hash; |
| |
| if (!space) |
| return 0; |
| |
| hash = isl_hash_init(); |
| hash = isl_hash_params(hash, space); |
| hash = isl_hash_tuples(hash, space); |
| |
| return hash; |
| } |
| |
| /* Return the hash value of the domain of "space". |
| * That is, isl_space_get_domain_hash(space) is equal to |
| * isl_space_get_hash(isl_space_domain(space)). |
| */ |
| uint32_t isl_space_get_domain_hash(__isl_keep isl_space *space) |
| { |
| uint32_t hash; |
| |
| if (!space) |
| return 0; |
| |
| hash = isl_hash_init(); |
| hash = isl_hash_params(hash, space); |
| hash = isl_hash_tuples_domain(hash, space); |
| |
| return hash; |
| } |
| |
| isl_bool isl_space_is_wrapping(__isl_keep isl_space *dim) |
| { |
| if (!dim) |
| return isl_bool_error; |
| |
| if (!isl_space_is_set(dim)) |
| return isl_bool_false; |
| |
| return dim->nested[1] != NULL; |
| } |
| |
| /* Is "space" the space of a map where the domain is a wrapped map space? |
| */ |
| isl_bool isl_space_domain_is_wrapping(__isl_keep isl_space *space) |
| { |
| if (!space) |
| return isl_bool_error; |
| |
| if (isl_space_is_set(space)) |
| return isl_bool_false; |
| |
| return space->nested[0] != NULL; |
| } |
| |
| /* Is "space" the space of a map where the range is a wrapped map space? |
| */ |
| isl_bool isl_space_range_is_wrapping(__isl_keep isl_space *space) |
| { |
| if (!space) |
| return isl_bool_error; |
| |
| if (isl_space_is_set(space)) |
| return isl_bool_false; |
| |
| return space->nested[1] != NULL; |
| } |
| |
| /* Is "space" a product of two spaces? |
| * That is, is it a wrapping set space or a map space |
| * with wrapping domain and range? |
| */ |
| isl_bool isl_space_is_product(__isl_keep isl_space *space) |
| { |
| isl_bool is_set; |
| isl_bool is_product; |
| |
| is_set = isl_space_is_set(space); |
| if (is_set < 0) |
| return isl_bool_error; |
| if (is_set) |
| return isl_space_is_wrapping(space); |
| is_product = isl_space_domain_is_wrapping(space); |
| if (is_product < 0 || !is_product) |
| return is_product; |
| return isl_space_range_is_wrapping(space); |
| } |
| |
| __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; |
| } |
| |
| isl_bool isl_space_is_named_or_nested(__isl_keep isl_space *space, |
| enum isl_dim_type type) |
| { |
| if (type != isl_dim_in && type != isl_dim_out) |
| return isl_bool_false; |
| if (!space) |
| return isl_bool_error; |
| if (space->tuple_id[type - isl_dim_in]) |
| return isl_bool_true; |
| if (space->nested[type - isl_dim_in]) |
| return isl_bool_true; |
| return isl_bool_false; |
| } |
| |
| isl_bool isl_space_may_be_set(__isl_keep isl_space *space) |
| { |
| isl_bool nested; |
| |
| if (!space) |
| return isl_bool_error; |
| if (isl_space_is_set(space)) |
| return isl_bool_true; |
| if (isl_space_dim(space, isl_dim_in) != 0) |
| return isl_bool_false; |
| nested = isl_space_is_named_or_nested(space, isl_dim_in); |
| if (nested < 0 || nested) |
| return isl_bool_not(nested); |
| return isl_bool_true; |
| } |
| |
| __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 *space) |
| { |
| if (!space) |
| return NULL; |
| if (!space->nested[0]) |
| return space; |
| |
| return isl_space_reset(space, isl_dim_in); |
| } |
| |
| __isl_give isl_space *isl_space_flatten_range(__isl_take isl_space *space) |
| { |
| if (!space) |
| return NULL; |
| if (!space->nested[1]) |
| return space; |
| |
| return isl_space_reset(space, isl_dim_out); |
| } |
| |
| /* Replace the parameters of dst by those of src. |
| */ |
| __isl_give isl_space *isl_space_replace_params(__isl_take isl_space *dst, |
| __isl_keep isl_space *src) |
| { |
| isl_bool equal_params; |
| enum isl_dim_type type = isl_dim_param; |
| |
| equal_params = isl_space_has_equal_params(dst, src); |
| if (equal_params < 0) |
| return isl_space_free(dst); |
| if (equal_params) |
| return dst; |
| |
| 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) { |
| int i; |
| for (i = 0; i <= 1; ++i) { |
| if (!dst->nested[i]) |
| continue; |
| dst->nested[i] = isl_space_replace_params( |
| dst->nested[i], 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; |
| } |
| |
| isl_bool isl_space_can_zip(__isl_keep isl_space *space) |
| { |
| isl_bool is_set; |
| |
| is_set = isl_space_is_set(space); |
| if (is_set < 0) |
| return isl_bool_error; |
| if (is_set) |
| return isl_bool_false; |
| return isl_space_is_product(space); |
| } |
| |
| __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? |
| */ |
| isl_bool isl_space_can_curry(__isl_keep isl_space *space) |
| { |
| if (!space) |
| return isl_bool_error; |
| |
| 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 isl_space_range_curry be applied to "space"? |
| * That is, does it have a nested relation in its range, |
| * the domain of which is itself a nested relation? |
| */ |
| isl_bool isl_space_can_range_curry(__isl_keep isl_space *space) |
| { |
| isl_bool can; |
| |
| if (!space) |
| return isl_bool_error; |
| can = isl_space_range_is_wrapping(space); |
| if (can < 0 || !can) |
| return can; |
| return isl_space_can_curry(space->nested[1]); |
| } |
| |
| /* Given a space A -> ((B -> C) -> D), return the corresponding space |
| * A -> (B -> (C -> D)). |
| */ |
| __isl_give isl_space *isl_space_range_curry(__isl_take isl_space *space) |
| { |
| if (!space) |
| return NULL; |
| |
| if (!isl_space_can_range_curry(space)) |
| isl_die(isl_space_get_ctx(space), isl_error_invalid, |
| "space range cannot be curried", |
| return isl_space_free(space)); |
| |
| space = isl_space_cow(space); |
| if (!space) |
| return NULL; |
| space->nested[1] = isl_space_curry(space->nested[1]); |
| if (!space->nested[1]) |
| return isl_space_free(space); |
| |
| return space; |
| } |
| |
| /* Can we apply isl_space_uncurry to "space"? |
| * That is, does it have a nested relation in its range? |
| */ |
| isl_bool isl_space_can_uncurry(__isl_keep isl_space *space) |
| { |
| if (!space) |
| return isl_bool_error; |
| |
| 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)); |
| } |
| |
| isl_bool isl_space_has_named_params(__isl_keep isl_space *space) |
| { |
| int i; |
| unsigned off; |
| |
| if (!space) |
| return isl_bool_error; |
| if (space->nparam == 0) |
| return isl_bool_true; |
| off = isl_space_offset(space, isl_dim_param); |
| if (off + space->nparam > space->n_id) |
| return isl_bool_false; |
| for (i = 0; i < space->nparam; ++i) |
| if (!space->ids[off + i]) |
| return isl_bool_false; |
| return isl_bool_true; |
| } |
| |
| /* Check that "space" has only named parameters, reporting an error |
| * if it does not. |
| */ |
| isl_stat isl_space_check_named_params(__isl_keep isl_space *space) |
| { |
| isl_bool named; |
| |
| named = isl_space_has_named_params(space); |
| if (named < 0) |
| return isl_stat_error; |
| if (!named) |
| isl_die(isl_space_get_ctx(space), isl_error_invalid, |
| "unexpected unnamed parameters", return isl_stat_error); |
| |
| return isl_stat_ok; |
| } |
| |
| /* Align the initial parameters of space1 to match the order in space2. |
| */ |
| __isl_give isl_space *isl_space_align_params(__isl_take isl_space *space1, |
| __isl_take isl_space *space2) |
| { |
| isl_reordering *exp; |
| |
| if (isl_space_check_named_params(space1) < 0 || |
| isl_space_check_named_params(space2) < 0) |
| goto error; |
| |
| exp = isl_parameter_alignment_reordering(space1, space2); |
| exp = isl_reordering_extend_space(exp, space1); |
| isl_space_free(space2); |
| space1 = isl_reordering_get_space(exp); |
| isl_reordering_free(exp); |
| return space1; |
| error: |
| isl_space_free(space1); |
| isl_space_free(space2); |
| 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; |
| } |