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 "gcc-plugin.h"
   8 #include "tm.h"
   9 #include "tree.h"
  10 #include "toplev.h"
  11 #include "basic-block.h"
  12 #include "hash-table.h"
  13 #include "vec.h"
  14 #include "ggc.h"
  15 #include "tree-ssa-alias.h"
  16 #include "internal-fn.h"
  17 #include "gimple-fold.h"
  18 #include "tree-eh.h"
  19 #include "gimple-expr.h"
  20 #include "is-a.h"
  21 #include "gimple.h"
  22 #include "tree.h"
  23 #include "tree-pass.h"
  24 #include "intl.h"
  25 #include "plugin-version.h"
  26 #include "diagnostic.h"
  27
  28 int plugin_is_GPL_compatible;
  29
  30 /* our callback is the same for all PLUGIN_GGC_START,
  31    PLUGIN_GGC_MARKING, PLUGIN_GGC_END events; it just increments the
  32    user_data which is an int */
  33 static void increment_callback (void *gcc_data, void *user_data);
  34
  35 /* our counters are user_data */
  36 static int our_ggc_start_counter;
  37 static int our_ggc_end_counter;
  38 static int our_ggc_marking_counter;
  39
  40 /* our empty GGC extra root table */
  41 static const struct ggc_root_tab our_xtratab[] = {
  42   LAST_GGC_ROOT_TAB
  43 };
  44
  45
  46 /* The initialization routine exposed to and called by GCC. The spec of this
  47    function is defined in gcc/gcc-plugin.h.
  48
  49    Note that this function needs to be named exactly "plugin_init".  */
  50 int
  51 plugin_init (struct plugin_name_args *plugin_info,
  52               struct plugin_gcc_version *version)
  53 {
  54   const char *plugin_name = plugin_info->base_name;
  55   int argc = plugin_info->argc;
  56   int i = 0;
  57   struct plugin_argument *argv = plugin_info->argv;
  58   if (!plugin_default_version_check (version, &gcc_version))
  59     return 1;
  60   /* Process the plugin arguments. This plugin takes the following arguments:
  61      count-ggc-start count-ggc-end count-ggc-mark */
  62   for (i = 0; i < argc; ++i)
  63     {
  64       if (!strcmp (argv[i].key, "count-ggc-start"))
  65         {
  66           if (argv[i].value)
  67             warning (0, G_("option '-fplugin-arg-%s-count-ggc-start=%s'"
  68                            " ignored (superfluous '=%s')"),
  69                      plugin_name, argv[i].value, argv[i].value);
  70           else
  71             register_callback ("ggcplug",
  72                                PLUGIN_GGC_START,
  73                                increment_callback,
  74                                (void *) &our_ggc_start_counter);
  75         }
  76       else if (!strcmp (argv[i].key, "count-ggc-end"))
  77         {
  78           if (argv[i].value)
  79             warning (0, G_("option '-fplugin-arg-%s-count-ggc-end=%s'"
  80                            " ignored (superfluous '=%s')"),
  81                      plugin_name, argv[i].value, argv[i].value);
  82           else
  83             register_callback ("ggcplug",
  84                                PLUGIN_GGC_END,
  85                                increment_callback,
  86                                (void *) &our_ggc_end_counter);
  87         }
  88       else if (!strcmp (argv[i].key, "count-ggc-mark"))
  89         {
  90           if (argv[i].value)
  91             warning (0, G_("option '-fplugin-arg-%s-count-ggc-mark=%s'"
  92                            " ignored (superfluous '=%s')"),
  93                      plugin_name, argv[i].value, argv[i].value);
  94           else
  95             register_callback ("ggcplug",
  96                                PLUGIN_GGC_MARKING,
  97                                increment_callback,
  98                                (void *) &our_ggc_marking_counter);
  99         }
 100       else if (!strcmp (argv[i].key, "test-extra-root"))
 101         {
 102           if (argv[i].value)
 103             warning (0, G_("option '-fplugin-arg-%s-test-extra-root=%s'"
 104                            " ignored (superfluous '=%s')"),
 105                      plugin_name, argv[i].value, argv[i].value);
 106           else
 107             register_callback ("ggcplug",
 108                                PLUGIN_REGISTER_GGC_ROOTS,
 109                                NULL,
 110                                (void *) our_xtratab);
 111         }
 112     }
 113   /* plugin initialization succeeded */
 114   return 0;
 115  }
 116
 117 static void
 118 increment_callback (void *gcc_data, void *user_data)
 119 {
 120   int *usercountptr = (int *) user_data;
 121   gcc_assert (!gcc_data);
 122   gcc_assert (user_data);
 123   (*usercountptr)++;
 124 }