isl_multi_move_dims_templ.c

   1 /*
   2  * Copyright 2013      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 /* Move the "n" dimensions of "src_type" starting at "src_pos" of "multi"
  15  * to dimensions of "dst_type" at "dst_pos".
  16  *
  17  * We only support moving input dimensions to parameters and vice versa.
  18  */
  19 __isl_give MULTI(BASE) *FN(MULTI(BASE),move_dims)(__isl_take MULTI(BASE) *multi,
  20         enum isl_dim_type dst_type, unsigned dst_pos,
  21         enum isl_dim_type src_type, unsigned src_pos, unsigned n)
  22 {
  23         isl_space *space;
  24         isl_size size;
  25         int i;
  26
  27         size = FN(MULTI(BASE),size)(multi);
  28         if (size < 0)
  29                 return FN(MULTI(BASE),free)(multi);
  30
  31         if (n == 0 &&
  32             !isl_space_is_named_or_nested(multi->space, src_type) &&
  33             !isl_space_is_named_or_nested(multi->space, dst_type))
  34                 return multi;
  35
  36         if (dst_type == isl_dim_out || src_type == isl_dim_out)
  37                 isl_die(FN(MULTI(BASE),get_ctx)(multi), isl_error_invalid,
  38                         "cannot move output/set dimension",
  39                         return FN(MULTI(BASE),free)(multi));
  40         if (dst_type == isl_dim_div || src_type == isl_dim_div)
  41                 isl_die(FN(MULTI(BASE),get_ctx)(multi), isl_error_invalid,
  42                         "cannot move divs",
  43                         return FN(MULTI(BASE),free)(multi));
  44         if (FN(MULTI(BASE),check_range)(multi, src_type, src_pos, n) < 0)
  45                 return FN(MULTI(BASE),free)(multi);
  46         if (dst_type == src_type)
  47                 isl_die(FN(MULTI(BASE),get_ctx)(multi), isl_error_unsupported,
  48                         "moving dims within the same type not supported",
  49                         return FN(MULTI(BASE),free)(multi));
  50
  51         space = FN(MULTI(BASE),take_space)(multi);
  52         space = isl_space_move_dims(space, dst_type, dst_pos,
  53                                                 src_type, src_pos, n);
  54         multi = FN(MULTI(BASE),restore_space)(multi, space);
  55
  56         if (FN(MULTI(BASE),has_explicit_domain)(multi))
  57                 multi = FN(MULTI(BASE),move_explicit_domain_dims)(multi,
  58                                 dst_type, dst_pos, src_type, src_pos, n);
  59
  60         for (i = 0; i < size; ++i) {
  61                 EL *el;
  62
  63                 el = FN(MULTI(BASE),take_at)(multi, i);
  64                 el = FN(EL,move_dims)(el, dst_type, dst_pos,
  65                                                 src_type, src_pos, n);
  66                 multi = FN(MULTI(BASE),restore_at)(multi, i, el);
  67         }
  68
  69         return multi;
  70 }