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 "toplev.h"
  15 #include "basic-block.h"
  16 #include "gimple.h"
  17 #include "tree.h"
  18 #include "tree-pass.h"
  19 #include "intl.h"
  20
  21 int plugin_is_GPL_compatible;
  22 static tree fake_var = NULL;
  23
  24 static bool
  25 gate_start_unit (void)
  26 {
  27   return true;
  28 }
  29
  30 static void start_unit_callback (void *gcc_data, void *user_data)
  31 {
  32   if (integer_type_node) {
  33     fake_var = build_decl (UNKNOWN_LOCATION, VAR_DECL,
  34                            get_identifier ("_fake_var_"),
  35                            integer_type_node);
  36     TREE_PUBLIC (fake_var) = 1;
  37     DECL_ARTIFICIAL (fake_var) = 1;
  38   }
  39 }
  40
  41 static void finish_unit_callback (void *gcc_data, void *user_data)
  42 {
  43   if (fake_var == NULL) {
  44     printf ("fake_var not created \n");
  45     return;
  46   }
  47   if (TREE_CODE (fake_var) != VAR_DECL) {
  48     printf ("fake_var not a VAR_DECL \n");
  49     return;
  50   }
  51   if (TREE_CODE (TREE_TYPE (fake_var)) != INTEGER_TYPE) {
  52     printf ("fake_var not INTEGER_TYPE \n");
  53     return;
  54   }
  55   if (DECL_ARTIFICIAL (fake_var) == 0) {
  56     printf ("fake_var not ARTIFICIAL \n");
  57     return;
  58   }
  59 }
  60
  61 int plugin_init (struct plugin_name_args *plugin_info,
  62                  struct plugin_gcc_version *version)
  63 {
  64   register_callback ("start_unit", PLUGIN_START_UNIT, &start_unit_callback, NULL);
  65   register_callback ("finish_unit", PLUGIN_FINISH_UNIT, &finish_unit_callback, NULL);
  66   return 0;
  67 }