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 static bool one_pass_gate (void)
  13 {
  14   return true;
  15 }
  16
  17 static unsigned int one_pass_exec (void)
  18 {
  19   static int counter = 0;
  20
  21   if (counter > 0) {
  22     printf ("Executed more than once \n");
  23  }
  24  counter++;
  25 }
  26
  27 struct gimple_opt_pass one_pass =
  28 {
  29   {
  30   GIMPLE_PASS,
  31   "useless",                           /* name */
  32   one_pass_gate,                         /* gate */
  33   one_pass_exec,       /* execute */
  34   NULL,                                 /* sub */
  35   NULL,                                 /* next */
  36   0,                                    /* static_pass_number */
  37   0,                                    /* tv_id */
  38   PROP_gimple_any,                      /* properties_required */
  39   0,                                    /* properties_provided */
  40   0,                                    /* properties_destroyed */
  41   0,                                    /* todo_flags_start */
  42   TODO_dump_func                        /* todo_flags_finish */
  43   }
  44 };
  45
  46
  47 int plugin_init (struct plugin_name_args *plugin_info,
  48                  struct plugin_gcc_version *version)
  49 {
  50   struct plugin_pass p;
  51
  52   p.pass = &one_pass.pass;
  53   p.reference_pass_name = "useless";
  54   p.ref_pass_instance_number = 1;
  55   p.pos_op = PASS_POS_INSERT_AFTER;
  56
  57   register_callback ("one_pass", PLUGIN_PASS_MANAGER_SETUP, NULL, &p);
  58
  59   return 0;
  60 }