gcc/testsuite/gcc.dg/plugin/ggcplug.c

   1 /* This plugin tests the GGC related plugin events.  */
   2 /* { dg-options "-O" } */
   3
   4 #include "config.h"
   5 #include "system.h"
   6 #include "coretypes.h"
   7 #include "tm.h"
   8 #include "toplev.h"
   9 #include "basic-block.h"
  10 #include "gimple.h"
  11 #include "tree.h"
  12 #include "tree-pass.h"
  13 #include "intl.h"
  14 #include "gcc-plugin.h"
  15 #include "plugin-version.h"
  16
  17 int plugin_is_GPL_compatible;
  18
  19 /* our callback is the same for all PLUGIN_GGC_START,
  20    PLUGIN_GGC_MARKING, PLUGIN_GGC_END events; it just increments the
  21    user_data which is an int */
  22 static void increment_callback (void *gcc_data, void *user_data);
  23
  24 /* our counters are user_data */
  25 static int our_ggc_start_counter;
  26 static int our_ggc_end_counter;
  27 static int our_ggc_marking_counter;
  28
  29 /* our empty GGC extra root table */
  30 static const struct ggc_root_tab our_xtratab[] = {
  31   LAST_GGC_ROOT_TAB
  32 };
  33
  34
  35 /* The initialization routine exposed to and called by GCC. The spec of this
  36    function is defined in gcc/gcc-plugin.h.
  37
  38    Note that this function needs to be named exactly "plugin_init".  */
  39 int
  40 plugin_init (struct plugin_name_args *plugin_info,
  41               struct plugin_gcc_version *version)
  42 {
  43   const char *plugin_name = plugin_info->base_name;
  44   int argc = plugin_info->argc;
  45   int i = 0;
  46   struct plugin_argument *argv = plugin_info->argv;
  47   if (!plugin_default_version_check (version, &gcc_version))
  48     return 1;
  49   /* Process the plugin arguments. This plugin takes the following arguments:
  50      count-ggc-start count-ggc-end count-ggc-mark */
  51   for (i = 0; i < argc; ++i)
  52     {
  53       if (!strcmp (argv[i].key, "count-ggc-start"))
  54         {
  55           if (argv[i].value)
  56             warning (0, G_ ("option '-fplugin-arg-%s-count-ggc-start=%s'"
  57                             " ignored (superfluous '=%s')"),
  58                      plugin_name, argv[i].value, argv[i].value);
  59           else
  60             register_callback ("ggcplug",
  61                                PLUGIN_GGC_START,
  62                                increment_callback,
  63                                (void *) &our_ggc_start_counter);
  64         }
  65       else if (!strcmp (argv[i].key, "count-ggc-end"))
  66         {
  67           if (argv[i].value)
  68             warning (0, G_ ("option '-fplugin-arg-%s-count-ggc-end=%s'"
  69                             " ignored (superfluous '=%s')"),
  70                      plugin_name, argv[i].value, argv[i].value);
  71           else
  72             register_callback ("ggcplug",
  73                                PLUGIN_GGC_END,
  74                                increment_callback,
  75                                (void *) &our_ggc_end_counter);
  76         }
  77       else if (!strcmp (argv[i].key, "count-ggc-mark"))
  78         {
  79           if (argv[i].value)
  80             warning (0, G_ ("option '-fplugin-arg-%s-count-ggc-mark=%s'"
  81                             " ignored (superfluous '=%s')"),
  82                      plugin_name, argv[i].value, argv[i].value);
  83           else
  84             register_callback ("ggcplug",
  85                                PLUGIN_GGC_MARKING,
  86                                increment_callback,
  87                                (void *) &our_ggc_marking_counter);
  88         }
  89       else if (!strcmp (argv[i].key, "test-extra-root"))
  90         {
  91           if (argv[i].value)
  92             warning (0, G_ ("option '-fplugin-arg-%s-test-extra-root=%s'"
  93                             " ignored (superfluous '=%s')"),
  94                      plugin_name, argv[i].value, argv[i].value);
  95           else
  96             register_callback ("ggcplug",
  97                                PLUGIN_REGISTER_GGC_ROOTS,
  98                                NULL,
  99                                (void *) our_xtratab);
 100         }
 101     }
 102   /* plugin initialization succeeded */
 103   return 0;
 104  }
 105
 106 static void
 107 increment_callback (void *gcc_data, void *user_data)
 108 {
 109   int *usercountptr = (int *) user_data;
 110   gcc_assert (!gcc_data);
 111   gcc_assert (user_data);
 112   (*usercountptr)++;
 113 }