2 * Copyright 2010 INRIA Saclay
4 * Use of this software is governed by the MIT license
6 * Written by Sven Verdoolaege, INRIA Saclay - Ile-de-France,
7 * Parc Club Orsay Universite, ZAC des vignes, 4 rue Jacques Monod,
11 #include <isl_ctx_private.h>
12 #include <isl_space_private.h>
13 #include <isl_reordering.h>
15 __isl_give isl_reordering *isl_reordering_alloc(isl_ctx *ctx, int len)
19 exp = isl_alloc(ctx, struct isl_reordering,
20 sizeof(struct isl_reordering) + (len - 1) * sizeof(int));
31 __isl_give isl_reordering *isl_reordering_copy(__isl_keep isl_reordering *exp)
40 __isl_give isl_reordering *isl_reordering_dup(__isl_keep isl_reordering *r)
48 dup = isl_reordering_alloc(r->dim->ctx, r->len);
52 dup->dim = isl_space_copy(r->dim);
54 return isl_reordering_free(dup);
55 for (i = 0; i < dup->len; ++i)
56 dup->pos[i] = r->pos[i];
61 __isl_give isl_reordering *isl_reordering_cow(__isl_take isl_reordering *r)
69 return isl_reordering_dup(r);
72 void *isl_reordering_free(__isl_take isl_reordering *exp)
80 isl_space_free(exp->dim);
85 /* Construct a reordering that maps the parameters of "alignee"
86 * to the corresponding parameters in a new dimension specification
87 * that has the parameters of "aligner" first, followed by
88 * any remaining parameters of "alignee" that do not occur in "aligner".
90 __isl_give isl_reordering *isl_parameter_alignment_reordering(
91 __isl_keep isl_space *alignee, __isl_keep isl_space *aligner)
96 if (!alignee || !aligner)
99 exp = isl_reordering_alloc(alignee->ctx, alignee->nparam);
103 exp->dim = isl_space_copy(aligner);
105 for (i = 0; i < alignee->nparam; ++i) {
107 id_i = isl_space_get_dim_id(alignee, isl_dim_param, i);
109 isl_die(alignee->ctx, isl_error_invalid,
110 "cannot align unnamed parameters", goto error);
111 for (j = 0; j < aligner->nparam; ++j) {
113 id_j = isl_space_get_dim_id(aligner, isl_dim_param, j);
118 if (j < aligner->nparam) {
123 pos = isl_space_dim(exp->dim, isl_dim_param);
124 exp->dim = isl_space_add_dims(exp->dim, isl_dim_param, 1);
125 exp->dim = isl_space_set_dim_id(exp->dim,
126 isl_dim_param, pos, id_i);
133 isl_reordering_free(exp);
137 __isl_give isl_reordering *isl_reordering_extend(__isl_take isl_reordering *exp,
149 offset = isl_space_dim(exp->dim, isl_dim_all) - exp->len;
150 res = isl_reordering_alloc(exp->dim->ctx, exp->len + extra);
153 res->dim = isl_space_copy(exp->dim);
154 for (i = 0; i < exp->len; ++i)
155 res->pos[i] = exp->pos[i];
156 for (i = exp->len; i < res->len; ++i)
157 res->pos[i] = offset + i;
159 isl_reordering_free(exp);
163 isl_reordering_free(exp);
167 __isl_give isl_reordering *isl_reordering_extend_space(
168 __isl_take isl_reordering *exp, __isl_take isl_space *dim)
175 res = isl_reordering_extend(isl_reordering_copy(exp),
176 isl_space_dim(dim, isl_dim_all) - exp->len);
177 res = isl_reordering_cow(res);
180 isl_space_free(res->dim);
181 res->dim = isl_space_replace(dim, isl_dim_param, exp->dim);
183 isl_reordering_free(exp);
187 isl_reordering_free(exp);
192 void isl_reordering_dump(__isl_keep isl_reordering *exp)
196 for (i = 0; i < exp->len; ++i)
197 fprintf(stderr, "%d -> %d; ", i, exp->pos[i]);
198 fprintf(stderr, "\n");