ppcg.h

   1 #ifndef PPCG_H
   2 #define PPCG_H
   3
   4 #include <isl/set.h>
   5 #include <isl/union_set.h>
   6 #include <isl/union_map.h>
   7 #include <isl/id_to_ast_expr.h>
   8 #include <pet.h>
   9
  10 #include "ppcg_options.h"
  11
  12 const char *ppcg_base_name(const char *filename);
  13 int ppcg_extract_base_name(char *name, const char *input);
  14
  15 /* Representation of the scop for use inside PPCG.
  16  *
  17  * "options" are the options specified by the user.
  18  * Some fields in this structure may depend on some of the options.
  19  *
  20  * "start" and "end" are file offsets of the corresponding program text.
  21  * "context" represents constraints on the parameters.
  22  * "domain" is the union of all iteration domains.
  23  * "call" contains the iteration domains of statements with a call expression.
  24  * "reads" contains all potential read accesses.
  25  * "tagged_reads" is the same as "reads", except that the domain is a wrapped
  26  *      relation mapping an iteration domain to a reference identifier
  27  * "live_in" contains the potential read accesses that potentially
  28  *      have no corresponding writes in the scop.
  29  * "may_writes" contains all potential write accesses.
  30  * "tagged_may_writes" is the same as "may_writes", except that the domain
  31  *      is a wrapped relation mapping an iteration domain
  32  *      to a reference identifier
  33  * "must_writes" contains all definite write accesses.
  34  * "tagged_must_writes" is the same as "must_writes", except that the domain
  35  *      is a wrapped relation mapping an iteration domain
  36  *      to a reference identifier
  37  * "live_out" contains the potential write accesses that are potentially
  38  *      not killed by any kills or any other writes.
  39  * "tagged_must_kills" contains all definite kill accesses with
  40  *      a reference identifier in the domain.
  41  *
  42  * "tagger" maps iteration domains to the corresponding tagged
  43  *      iteration domain.
  44  *
  45  * "independence" is the union of all independence filters.
  46  *
  47  * "dep_flow" represents the potential flow dependences.
  48  * "tagged_dep_flow" is the same as "dep_flow", except that both domain and
  49  *      range are wrapped relations mapping an iteration domain to
  50  *      a reference identifier.  May be NULL if not computed.
  51  * "dep_false" represents the potential false (anti and output) dependences.
  52  * "dep_external" represents the constraints that ensure that all live-in
  53  *      accesses remain live-in and that all live-out accesses remain live-out.
  54  * "dep_order"/"tagged_dep_order" represents the order dependences between
  55  *      the live range intervals in "dep_flow"/"tagged_dep_flow".
  56  *      It is only used if the live_range_reordering
  57  *      option is set.  Otherwise it is NULL.
  58  *      If "dep_order" is used, then "dep_false" only contains a limited
  59  *      set of anti and output dependences.
  60  * "schedule" represents the (original) schedule.
  61  *
  62  * "names" contains all variable names that are in use by the scop.
  63  * The names are mapped to a dummy value.
  64  *
  65  * "pet" is the original pet_scop.
  66  */
  67 struct ppcg_scop {
  68         struct ppcg_options *options;
  69
  70         unsigned start;
  71         unsigned end;
  72
  73         isl_set *context;
  74         isl_union_set *domain;
  75         isl_union_set *call;
  76         isl_union_map *tagged_reads;
  77         isl_union_map *reads;
  78         isl_union_map *live_in;
  79         isl_union_map *tagged_may_writes;
  80         isl_union_map *may_writes;
  81         isl_union_map *tagged_must_writes;
  82         isl_union_map *must_writes;
  83         isl_union_map *live_out;
  84         isl_union_map *tagged_must_kills;
  85
  86         isl_union_map *tagger;
  87
  88         isl_union_map *independence;
  89
  90         isl_union_map *dep_flow;
  91         isl_union_map *tagged_dep_flow;
  92         isl_union_map *dep_false;
  93         isl_union_map *dep_external;
  94         isl_union_map *dep_order;
  95         isl_union_map *tagged_dep_order;
  96         isl_union_map *schedule;
  97
  98         isl_id_to_ast_expr *names;
  99
 100         struct pet_scop *pet;
 101 };
 102
 103 __isl_give isl_id_list *ppcg_scop_generate_names(struct ppcg_scop *scop,
 104         int n, const char *prefix);
 105
 106 int ppcg_transform(isl_ctx *ctx, const char *input, FILE *out,
 107         struct ppcg_options *options,
 108         __isl_give isl_printer *(*fn)(__isl_take isl_printer *p,
 109                 struct ppcg_scop *scop, void *user), void *user);
 110
 111 #endif