gcc/testsuite/gcc.dg/plugin/start_unit_plugin.c

   1 /* This plugin tests the correct operation of a PLUGIN_START_UNIT callback.
   2  * By the time a PLUGIN_START_UNIT callback is invoked, the frontend
   3  * initialization should have completed. At least the different *_type_nodes
   4  * should have been created. This plugin creates an artificial global
   5  * interger variable.
   6  *
   7 */
   8 #include "gcc-plugin.h"
   9 #include "config.h"
  10 #include "system.h"
  11 #include "coretypes.h"
  12 #include "tm.h"
  13 #include "tree.h"
  14 #include "stringpool.h"
  15 #include "toplev.h"
  16 #include "basic-block.h"
  17 #include "hash-table.h"
  18 #include "vec.h"
  19 #include "ggc.h"
  20 #include "basic-block.h"
  21 #include "tree-ssa-alias.h"
  22 #include "internal-fn.h"
  23 #include "gimple-fold.h"
  24 #include "tree-eh.h"
  25 #include "gimple-expr.h"
  26 #include "is-a.h"
  27 #include "gimple.h"
  28 #include "tree.h"
  29 #include "tree-pass.h"
  30 #include "intl.h"
  31
  32 int plugin_is_GPL_compatible;
  33 static tree fake_var = NULL;
  34
  35 static bool
  36 gate_start_unit (void)
  37 {
  38   return true;
  39 }
  40
  41 static void start_unit_callback (void *gcc_data, void *user_data)
  42 {
  43   if (integer_type_node) {
  44     fake_var = build_decl (UNKNOWN_LOCATION, VAR_DECL,
  45                            get_identifier ("_fake_var_"),
  46                            integer_type_node);
  47     TREE_PUBLIC (fake_var) = 1;
  48     DECL_ARTIFICIAL (fake_var) = 1;
  49   }
  50 }
  51
  52 static void finish_unit_callback (void *gcc_data, void *user_data)
  53 {
  54   if (fake_var == NULL) {
  55     printf ("fake_var not created \n");
  56     return;
  57   }
  58   if (TREE_CODE (fake_var) != VAR_DECL) {
  59     printf ("fake_var not a VAR_DECL \n");
  60     return;
  61   }
  62   if (TREE_CODE (TREE_TYPE (fake_var)) != INTEGER_TYPE) {
  63     printf ("fake_var not INTEGER_TYPE \n");
  64     return;
  65   }
  66   if (DECL_ARTIFICIAL (fake_var) == 0) {
  67     printf ("fake_var not ARTIFICIAL \n");
  68     return;
  69   }
  70 }
  71
  72 int plugin_init (struct plugin_name_args *plugin_info,
  73                  struct plugin_gcc_version *version)
  74 {
  75   register_callback ("start_unit", PLUGIN_START_UNIT, &start_unit_callback, NULL);
  76   register_callback ("finish_unit", PLUGIN_FINISH_UNIT, &finish_unit_callback, NULL);
  77   return 0;
  78 }