gcc/testsuite/gcc.dg/plugin/one_time_plugin.c

   1 /* Plugin that prints message if it inserted (and invoked) more than once. */
   2 #include "config.h"
   3 #include "gcc-plugin.h"
   4 #include "system.h"
   5 #include "coretypes.h"
   6 #include "tm.h"
   7 #include "toplev.h"
   8 #include "gimple.h"
   9 #include "tree-pass.h"
  10 #include "intl.h"
  11
  12 int plugin_is_GPL_compatible;
  13
  14 static bool one_pass_gate (void)
  15 {
  16   return true;
  17 }
  18
  19 static unsigned int one_pass_exec (void)
  20 {
  21   static int counter = 0;
  22
  23   if (counter > 0) {
  24     printf ("Executed more than once \n");
  25  }
  26  counter++;
  27  return 0;
  28 }
  29
  30 struct gimple_opt_pass one_pass =
  31 {
  32   {
  33   GIMPLE_PASS,
  34   "useless",                           /* name */
  35   one_pass_gate,                         /* gate */
  36   one_pass_exec,       /* execute */
  37   NULL,                                 /* sub */
  38   NULL,                                 /* next */
  39   0,                                    /* static_pass_number */
  40   0,                                    /* tv_id */
  41   PROP_gimple_any,                      /* properties_required */
  42   0,                                    /* properties_provided */
  43   0,                                    /* properties_destroyed */
  44   0,                                    /* todo_flags_start */
  45   TODO_dump_func                        /* todo_flags_finish */
  46   }
  47 };
  48
  49
  50 int plugin_init (struct plugin_name_args *plugin_info,
  51                  struct plugin_gcc_version *version)
  52 {
  53   struct plugin_pass p;
  54
  55   p.pass = &one_pass.pass;
  56   p.reference_pass_name = "useless";
  57   p.ref_pass_instance_number = 1;
  58   p.pos_op = PASS_POS_INSERT_AFTER;
  59
  60   register_callback ("one_pass", PLUGIN_PASS_MANAGER_SETUP, NULL, &p);
  61
  62   return 0;
  63 }