isl_multi_product_templ.c

   1 /*
   2  * Copyright 2012      Ecole Normale Superieure
   3  *
   4  * Use of this software is governed by the MIT license
   5  *
   6  * Written by Sven Verdoolaege,
   7  * Ecole Normale Superieure, 45 rue d'Ulm, 75230 Paris, France
   8  */
   9
  10 #include <isl/space.h>
  11
  12 #include <isl_multi_macro.h>
  13
  14 /* Given two MULTI(BASE)s A -> B and C -> D,
  15  * construct a MULTI(BASE) [A -> C] -> [B -> D].
  16  *
  17  * If "multi1" and/or "multi2" has an explicit domain, then
  18  * intersect the domain of the result with these explicit domains.
  19  */
  20 __isl_give MULTI(BASE) *FN(MULTI(BASE),product)(
  21         __isl_take MULTI(BASE) *multi1, __isl_take MULTI(BASE) *multi2)
  22 {
  23         int i;
  24         EL *el;
  25         isl_space *space;
  26         MULTI(BASE) *res;
  27         isl_size in1, in2, out1, out2;
  28
  29         FN(MULTI(BASE),align_params_bin)(&multi1, &multi2);
  30         in1 = FN(MULTI(BASE),dim)(multi1, isl_dim_in);
  31         in2 = FN(MULTI(BASE),dim)(multi2, isl_dim_in);
  32         out1 = FN(MULTI(BASE),dim)(multi1, isl_dim_out);
  33         out2 = FN(MULTI(BASE),dim)(multi2, isl_dim_out);
  34         if (in1 < 0 || in2 < 0 || out1 < 0 || out2 < 0)
  35                 goto error;
  36         space = isl_space_product(FN(MULTI(BASE),get_space)(multi1),
  37                                   FN(MULTI(BASE),get_space)(multi2));
  38         res = FN(MULTI(BASE),alloc)(isl_space_copy(space));
  39         space = isl_space_domain(space);
  40
  41         for (i = 0; i < out1; ++i) {
  42                 el = FN(FN(MULTI(BASE),get),BASE)(multi1, i);
  43                 el = FN(EL,insert_dims)(el, isl_dim_in, in1, in2);
  44                 el = FN(EL,reset_domain_space)(el, isl_space_copy(space));
  45                 res = FN(FN(MULTI(BASE),set),BASE)(res, i, el);
  46         }
  47
  48         for (i = 0; i < out2; ++i) {
  49                 el = FN(FN(MULTI(BASE),get),BASE)(multi2, i);
  50                 el = FN(EL,insert_dims)(el, isl_dim_in, 0, in1);
  51                 el = FN(EL,reset_domain_space)(el, isl_space_copy(space));
  52                 res = FN(FN(MULTI(BASE),set),BASE)(res, out1 + i, el);
  53         }
  54
  55         if (FN(MULTI(BASE),has_explicit_domain)(multi1) ||
  56             FN(MULTI(BASE),has_explicit_domain)(multi2))
  57                 res = FN(MULTI(BASE),intersect_explicit_domain_product)(res,
  58                                                                 multi1, multi2);
  59
  60         isl_space_free(space);
  61         FN(MULTI(BASE),free)(multi1);
  62         FN(MULTI(BASE),free)(multi2);
  63         return res;
  64 error:
  65         FN(MULTI(BASE),free)(multi1);
  66         FN(MULTI(BASE),free)(multi2);
  67         return NULL;
  68 }