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 #include "diagnostic.h"
  17
  18 int plugin_is_GPL_compatible;
  19
  20 /* our callback is the same for all PLUGIN_GGC_START,
  21    PLUGIN_GGC_MARKING, PLUGIN_GGC_END events; it just increments the
  22    user_data which is an int */
  23 static void increment_callback (void *gcc_data, void *user_data);
  24
  25 /* our counters are user_data */
  26 static int our_ggc_start_counter;
  27 static int our_ggc_end_counter;
  28 static int our_ggc_marking_counter;
  29
  30 /* our empty GGC extra root table */
  31 static const struct ggc_root_tab our_xtratab[] = {
  32   LAST_GGC_ROOT_TAB
  33 };
  34
  35
  36 /* The initialization routine exposed to and called by GCC. The spec of this
  37    function is defined in gcc/gcc-plugin.h.
  38
  39    Note that this function needs to be named exactly "plugin_init".  */
  40 int
  41 plugin_init (struct plugin_name_args *plugin_info,
  42               struct plugin_gcc_version *version)
  43 {
  44   const char *plugin_name = plugin_info->base_name;
  45   int argc = plugin_info->argc;
  46   int i = 0;
  47   struct plugin_argument *argv = plugin_info->argv;
  48   if (!plugin_default_version_check (version, &gcc_version))
  49     return 1;
  50   /* Process the plugin arguments. This plugin takes the following arguments:
  51      count-ggc-start count-ggc-end count-ggc-mark */
  52   for (i = 0; i < argc; ++i)
  53     {
  54       if (!strcmp (argv[i].key, "count-ggc-start"))
  55         {
  56           if (argv[i].value)
  57             warning (0, G_ ("option '-fplugin-arg-%s-count-ggc-start=%s'"
  58                             " ignored (superfluous '=%s')"),
  59                      plugin_name, argv[i].value, argv[i].value);
  60           else
  61             register_callback ("ggcplug",
  62                                PLUGIN_GGC_START,
  63                                increment_callback,
  64                                (void *) &our_ggc_start_counter);
  65         }
  66       else if (!strcmp (argv[i].key, "count-ggc-end"))
  67         {
  68           if (argv[i].value)
  69             warning (0, G_ ("option '-fplugin-arg-%s-count-ggc-end=%s'"
  70                             " ignored (superfluous '=%s')"),
  71                      plugin_name, argv[i].value, argv[i].value);
  72           else
  73             register_callback ("ggcplug",
  74                                PLUGIN_GGC_END,
  75                                increment_callback,
  76                                (void *) &our_ggc_end_counter);
  77         }
  78       else if (!strcmp (argv[i].key, "count-ggc-mark"))
  79         {
  80           if (argv[i].value)
  81             warning (0, G_ ("option '-fplugin-arg-%s-count-ggc-mark=%s'"
  82                             " ignored (superfluous '=%s')"),
  83                      plugin_name, argv[i].value, argv[i].value);
  84           else
  85             register_callback ("ggcplug",
  86                                PLUGIN_GGC_MARKING,
  87                                increment_callback,
  88                                (void *) &our_ggc_marking_counter);
  89         }
  90       else if (!strcmp (argv[i].key, "test-extra-root"))
  91         {
  92           if (argv[i].value)
  93             warning (0, G_ ("option '-fplugin-arg-%s-test-extra-root=%s'"
  94                             " ignored (superfluous '=%s')"),
  95                      plugin_name, argv[i].value, argv[i].value);
  96           else
  97             register_callback ("ggcplug",
  98                                PLUGIN_REGISTER_GGC_ROOTS,
  99                                NULL,
 100                                (void *) our_xtratab);
 101         }
 102     }
 103   /* plugin initialization succeeded */
 104   return 0;
 105  }
 106
 107 static void
 108 increment_callback (void *gcc_data, void *user_data)
 109 {
 110   int *usercountptr = (int *) user_data;
 111   gcc_assert (!gcc_data);
 112   gcc_assert (user_data);
 113   (*usercountptr)++;
 114 }