1 files changed, 114 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/plugin/ggcplug.c b/gcc/testsuite/gcc.dg/plugin/ggcplug.c
new file mode 100644
index 000000000..3094b2ebb
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/plugin/ggcplug.c
@@ -0,0 +1,114 @@
+/* This plugin tests the GGC related plugin events.  */
+/* { dg-options "-O" } */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "toplev.h"
+#include "basic-block.h"
+#include "gimple.h"
+#include "tree.h"
+#include "tree-pass.h"
+#include "intl.h"
+#include "gcc-plugin.h"
+#include "plugin-version.h"
+#include "diagnostic.h"
+
+int plugin_is_GPL_compatible;
+
+/* our callback is the same for all PLUGIN_GGC_START,
+   PLUGIN_GGC_MARKING, PLUGIN_GGC_END events; it just increments the
+   user_data which is an int */
+static void increment_callback (void *gcc_data, void *user_data);
+
+/* our counters are user_data */
+static int our_ggc_start_counter;
+static int our_ggc_end_counter;
+static int our_ggc_marking_counter;
+
+/* our empty GGC extra root table */
+static const struct ggc_root_tab our_xtratab[] = {
+  LAST_GGC_ROOT_TAB
+};
+
+
+/* The initialization routine exposed to and called by GCC. The spec of this
+   function is defined in gcc/gcc-plugin.h.
+
+   Note that this function needs to be named exactly "plugin_init".  */
+int
+plugin_init (struct plugin_name_args *plugin_info,
+	      struct plugin_gcc_version *version)
+{
+  const char *plugin_name = plugin_info->base_name;
+  int argc = plugin_info->argc;
+  int i = 0;
+  struct plugin_argument *argv = plugin_info->argv;
+  if (!plugin_default_version_check (version, &gcc_version))
+    return 1;
+  /* Process the plugin arguments. This plugin takes the following arguments:
+     count-ggc-start count-ggc-end count-ggc-mark */
+  for (i = 0; i < argc; ++i)
+    {
+      if (!strcmp (argv[i].key, "count-ggc-start"))
+	{
+	  if (argv[i].value)
+	    warning (0, G_ ("option '-fplugin-arg-%s-count-ggc-start=%s'"
+			    " ignored (superfluous '=%s')"),
+		     plugin_name, argv[i].value, argv[i].value);
+	  else
+	    register_callback ("ggcplug",
+			       PLUGIN_GGC_START,
+			       increment_callback,
+			       (void *) &our_ggc_start_counter);
+	}
+      else if (!strcmp (argv[i].key, "count-ggc-end"))
+	{
+	  if (argv[i].value)
+	    warning (0, G_ ("option '-fplugin-arg-%s-count-ggc-end=%s'"
+			    " ignored (superfluous '=%s')"),
+		     plugin_name, argv[i].value, argv[i].value);
+	  else
+	    register_callback ("ggcplug",
+			       PLUGIN_GGC_END,
+			       increment_callback,
+			       (void *) &our_ggc_end_counter);
+	}
+      else if (!strcmp (argv[i].key, "count-ggc-mark"))
+	{
+	  if (argv[i].value)
+	    warning (0, G_ ("option '-fplugin-arg-%s-count-ggc-mark=%s'"
+			    " ignored (superfluous '=%s')"),
+		     plugin_name, argv[i].value, argv[i].value);
+	  else
+	    register_callback ("ggcplug",
+			       PLUGIN_GGC_MARKING,
+			       increment_callback,
+			       (void *) &our_ggc_marking_counter);
+	}
+      else if (!strcmp (argv[i].key, "test-extra-root"))
+	{
+	  if (argv[i].value)
+	    warning (0, G_ ("option '-fplugin-arg-%s-test-extra-root=%s'"
+			    " ignored (superfluous '=%s')"),
+		     plugin_name, argv[i].value, argv[i].value);
+	  else
+	    register_callback ("ggcplug",
+			       PLUGIN_REGISTER_GGC_ROOTS,
+			       NULL,
+			       (void *) our_xtratab);
+	}
+    }
+  /* plugin initialization succeeded */
+  return 0;
+ }
+
+static void
+increment_callback (void *gcc_data, void *user_data)
+{
+  int *usercountptr = (int *) user_data;
+  gcc_assert (!gcc_data);
+  gcc_assert (user_data);
+  (*usercountptr)++;
+}