expr.h

   1 #ifndef PET_EXPR_H
   2 #define PET_EXPR_H
   3
   4 #include <isl/id_to_pw_aff.h>
   5
   6 #include <pet.h>
   7
   8 #include "context.h"
   9
  10 #if defined(__cplusplus)
  11 extern "C" {
  12 #endif
  13
  14 /* d is valid when type == pet_expr_double
  15  * i isl valid when type == pet_expr_int
  16  * acc is valid when type == pet_expr_access
  17  * name is valid when type == pet_expr_call
  18  * type is valid when type == pet_expr_cast
  19  * op is valid otherwise
  20  *
  21  * If type_size is not zero, then the expression is of an integer type
  22  * and type_size represents the size of the type in bits.
  23  * If type_size is greater than zero, then the type is unsigned
  24  * and the number of bits is equal to type_size.
  25  * If type_size is less than zero, then the type is signed
  26  * and the number of bits is equal to -type_size.
  27  * type_size may also be zero if the size is (still) unknown.
  28  *
  29  * For each access expression inside the body of a statement, acc.ref_id
  30  * is a unique reference identifier.
  31  * acc.index represents the index expression, while acc.access
  32  * represents the corresponding access relation.
  33  * The output dimension of the index expression may be smaller
  34  * than the number of dimensions of the accessed array.
  35  * The target space of the access relation, on the other hand,
  36  * is equal to the array space.
  37  * Both acc.index and acc.access usually map an iteration space
  38  * to a (partial) data space.
  39  * If the access has arguments, however, then the domain of the
  40  * mapping is a wrapped mapping from the iteration space
  41  * to a space of dimensionality equal to the number of arguments.
  42  * Each dimension in this space corresponds to the value of the
  43  * corresponding argument.
  44  *
  45  * The ranges of the index expressions and access relations may
  46  * also be wrapped relations, in which case the expression represents
  47  * a member access, with the structure represented by the domain
  48  * of this wrapped relation and the member represented by the range.
  49  * In case of nested member accesses, the domain is itself a wrapped
  50  * relation.
  51  *
  52  * If the data space is unnamed (and 1D), then it represents
  53  * the set of integers.  That is, the access represents a value that
  54  * is equal to the index.
  55  *
  56  * A double is represented as both an (approximate) value "val" and
  57  * a string representation "s".
  58  */
  59 struct pet_expr {
  60         int ref;
  61         isl_ctx *ctx;
  62
  63         enum pet_expr_type type;
  64
  65         int type_size;
  66
  67         unsigned n_arg;
  68         pet_expr **args;
  69
  70         union {
  71                 struct {
  72                         isl_id *ref_id;
  73                         isl_map *access;
  74                         isl_multi_pw_aff *index;
  75                         int read;
  76                         int write;
  77                 } acc;
  78                 enum pet_op_type op;
  79                 char *name;
  80                 char *type_name;
  81                 struct {
  82                         double val;
  83                         char *s;
  84                 } d;
  85                 isl_val *i;
  86         };
  87 };
  88
  89 const char *pet_type_str(enum pet_expr_type type);
  90 enum pet_expr_type pet_str_type(const char *str);
  91
  92 enum pet_op_type pet_str_op(const char *str);
  93
  94 __isl_give pet_expr *pet_expr_alloc(isl_ctx *ctx, enum pet_expr_type type);
  95 __isl_give pet_expr *pet_expr_from_access_and_index(__isl_take isl_map *access,
  96         __isl_take isl_multi_pw_aff *index);
  97 __isl_give pet_expr *pet_expr_kill_from_access_and_index(
  98         __isl_take isl_map *access, __isl_take isl_multi_pw_aff *index);
  99 __isl_give pet_expr *pet_expr_new_unary(enum pet_op_type op,
 100         __isl_take pet_expr *arg);
 101 __isl_give pet_expr *pet_expr_new_binary(int type_size, enum pet_op_type op,
 102         __isl_take pet_expr *lhs, __isl_take pet_expr *rhs);
 103 __isl_give pet_expr *pet_expr_new_ternary(__isl_take pet_expr *cond,
 104         __isl_take pet_expr *lhs, __isl_take pet_expr *rhs);
 105 __isl_give pet_expr *pet_expr_new_call(isl_ctx *ctx, const char *name,
 106         unsigned n_arg);
 107 __isl_give pet_expr *pet_expr_new_cast(const char *type_name,
 108         __isl_take pet_expr *arg);
 109 __isl_give pet_expr *pet_expr_new_double(isl_ctx *ctx, double d, const char *s);
 110 __isl_give pet_expr *pet_expr_new_int(__isl_take isl_val *v);
 111
 112 __isl_give pet_expr *pet_expr_cow(__isl_take pet_expr *expr);
 113
 114 __isl_give isl_pw_aff *pet_expr_extract_affine(__isl_keep pet_expr *expr,
 115         __isl_keep pet_context *pc);
 116 __isl_give isl_pw_aff *pet_expr_extract_affine_condition(
 117         __isl_keep pet_expr *expr, __isl_keep pet_context *pc);
 118 __isl_give isl_pw_aff *pet_expr_extract_comparison(enum pet_op_type op,
 119         __isl_keep pet_expr *lhs, __isl_keep pet_expr *rhs,
 120         __isl_keep pet_context *pc);
 121 __isl_give pet_expr *pet_expr_resolve_assume(__isl_take pet_expr *expr,
 122         __isl_keep pet_context *pc);
 123
 124 int pet_expr_is_assume(__isl_keep pet_expr *expr);
 125 int pet_expr_is_boolean(__isl_keep pet_expr *expr);
 126 int pet_expr_is_comparison(__isl_keep pet_expr *expr);
 127 int pet_expr_is_min(__isl_keep pet_expr *expr);
 128 int pet_expr_is_max(__isl_keep pet_expr *expr);
 129 int pet_expr_is_scalar_access(__isl_keep pet_expr *expr);
 130 int pet_expr_is_equal(__isl_keep pet_expr *expr1, __isl_keep pet_expr *expr2);
 131
 132 __isl_give isl_space *pet_expr_access_get_parameter_space(
 133         __isl_take pet_expr *expr);
 134 __isl_give isl_space *pet_expr_access_get_domain_space(
 135         __isl_keep pet_expr *expr);
 136 __isl_give isl_space *pet_expr_access_get_data_space(__isl_keep pet_expr *expr);
 137
 138 __isl_give pet_expr *pet_expr_map_access(__isl_take pet_expr *expr,
 139         __isl_give pet_expr *(*fn)(__isl_take pet_expr *expr, void *user),
 140         void *user);
 141
 142 __isl_give isl_map *pet_expr_access_get_access(__isl_keep pet_expr *expr);
 143 __isl_give pet_expr *pet_expr_access_set_access(__isl_take pet_expr *expr,
 144         __isl_take isl_map *access);
 145 __isl_give pet_expr *pet_expr_access_set_index(__isl_take pet_expr *expr,
 146         __isl_take isl_multi_pw_aff *index);
 147
 148 int pet_expr_writes(__isl_keep pet_expr *expr, __isl_keep isl_id *id);
 149
 150 __isl_give pet_expr *pet_expr_access_move_dims(__isl_take pet_expr *expr,
 151         enum isl_dim_type dst_type, unsigned dst_pos,
 152         enum isl_dim_type src_type, unsigned src_pos, unsigned n);
 153 __isl_give pet_expr *pet_expr_access_pullback_multi_aff(
 154         __isl_take pet_expr *expr, __isl_take isl_multi_aff *ma);
 155 __isl_give pet_expr *pet_expr_access_pullback_multi_pw_aff(
 156         __isl_take pet_expr *expr, __isl_take isl_multi_pw_aff *mpa);
 157 __isl_give pet_expr *pet_expr_access_align_params(__isl_take pet_expr *expr);
 158 __isl_give pet_expr *pet_expr_restrict(__isl_take pet_expr *expr,
 159         __isl_take isl_set *cond);
 160 __isl_give pet_expr *pet_expr_access_update_domain(__isl_take pet_expr *expr,
 161         __isl_keep isl_multi_pw_aff *update);
 162 __isl_give pet_expr *pet_expr_update_domain(__isl_take pet_expr *expr,
 163         __isl_take isl_multi_pw_aff *update);
 164 __isl_give pet_expr *pet_expr_align_params(__isl_take pet_expr *expr,
 165         __isl_take isl_space *space);
 166 __isl_give pet_expr *pet_expr_filter(__isl_take pet_expr *expr,
 167         __isl_take isl_multi_pw_aff *test, int satisfied);
 168 __isl_give pet_expr *pet_expr_detect_parameter_accesses(
 169         __isl_take pet_expr *expr, __isl_take isl_space *space);
 170 __isl_give pet_expr *pet_expr_add_ref_ids(__isl_take pet_expr *expr,
 171         int *n_ref);
 172 __isl_give pet_expr *pet_expr_anonymize(__isl_take pet_expr *expr);
 173 __isl_give pet_expr *pet_expr_gist(__isl_take pet_expr *expr,
 174         __isl_keep isl_set *context, __isl_keep isl_union_map *value_bounds);
 175
 176 __isl_give isl_map *pet_expr_tag_access(__isl_keep pet_expr *expr,
 177         __isl_take isl_map *access);
 178
 179 __isl_give pet_expr *pet_expr_access_subscript(__isl_take pet_expr *base,
 180         __isl_take pet_expr *index);
 181 __isl_give pet_expr *pet_expr_access_member(__isl_take pet_expr *base,
 182         __isl_take isl_id *member);
 183
 184 int pet_expr_get_type_size(__isl_keep pet_expr *expr);
 185 __isl_give pet_expr *pet_expr_set_type_size(__isl_take pet_expr *expr,
 186         int type_size);
 187 __isl_give pet_expr *pet_expr_access_set_depth(__isl_take pet_expr *expr,
 188         int depth);
 189
 190 void pet_expr_dump_with_indent(__isl_keep pet_expr *expr, int indent);
 191
 192 #if defined(__cplusplus)
 193 }
 194 #endif
 195
 196 #endif