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 "tree.h"
   7 #include "tm.h"
   8 #include "toplev.h"
   9 #include "gimple.h"
  10 #include "tree-pass.h"
  11 #include "intl.h"
  12 #include "context.h"
  13
  14 int plugin_is_GPL_compatible;
  15
  16 namespace {
  17
  18 const pass_data pass_data_one_pass =
  19 {
  20   GIMPLE_PASS, /* type */
  21   "cfg", /* name */
  22   OPTGROUP_NONE, /* optinfo_flags */
  23   true, /* has_gate */
  24   true, /* has_execute */
  25   TV_NONE, /* tv_id */
  26   PROP_gimple_any, /* properties_required */
  27   0, /* properties_provided */
  28   0, /* properties_destroyed */
  29   0, /* todo_flags_start */
  30   0, /* todo_flags_finish */
  31 };
  32
  33 class one_pass : public gimple_opt_pass
  34 {
  35 public:
  36   one_pass(gcc::context *ctxt)
  37     : gimple_opt_pass(pass_data_one_pass, ctxt),
  38       counter(0)
  39   {}
  40
  41   /* opt_pass methods: */
  42   bool gate ();
  43   unsigned int execute ();
  44
  45 private:
  46   int counter;
  47 }; // class one_pass
  48
  49 } // anon namespace
  50
  51 bool one_pass::gate (void)
  52 {
  53   return true;
  54 }
  55
  56 unsigned int one_pass::execute ()
  57 {
  58   if (counter > 0) {
  59     printf ("Executed more than once \n");
  60  }
  61  counter++;
  62  return 0;
  63 }
  64
  65 gimple_opt_pass *
  66 make_one_pass (gcc::context *ctxt)
  67 {
  68   return new one_pass (ctxt);
  69 }
  70
  71
  72 int plugin_init (struct plugin_name_args *plugin_info,
  73                  struct plugin_gcc_version *version)
  74 {
  75   struct register_pass_info p;
  76
  77   p.pass = make_one_pass (g);
  78   p.reference_pass_name = "cfg";
  79   p.ref_pass_instance_number = 1;
  80   p.pos_op = PASS_POS_INSERT_AFTER;
  81
  82   register_callback ("one_pass", PLUGIN_PASS_MANAGER_SETUP, NULL, &p);
  83
  84   return 0;
  85 }