1 files changed, 76 insertions, 0 deletions
diff --git a/gcc/symtab-clones.cc b/gcc/symtab-clones.cc
new file mode 100644
index 0000000..76b86c64
--- /dev/null
+++ b/gcc/symtab-clones.cc
@@ -0,0 +1,76 @@
+/* Support for virtual clones in symbol table.
+   Copyright (C) 2003-2020 Free Software Foundation, Inc.
+   Contributed by Jan Hubicka
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "backend.h"
+#include "tree.h"
+#include "gimple.h"
+#include "predict.h"
+#include "target.h"
+#include "rtl.h"
+#include "alloc-pool.h"
+#include "cgraph.h"
+#include "symbol-summary.h"
+#include "symtab-clones.h"
+#include "lto-streamer.h"
+#include "data-streamer.h"
+
+namespace {
+
+/* Function summary for clone_infos.  */
+class GTY((user)) clone_infos_t: public function_summary <clone_info *>
+{
+public:
+  clone_infos_t (symbol_table *table, bool ggc):
+    function_summary<clone_info *> (table, ggc) { }
+
+  /* Hook that is called by summary when a node is duplicated.  */
+  virtual void duplicate (cgraph_node *node,
+			  cgraph_node *node2,
+			  clone_info *data,
+			  clone_info *data2);
+};
+
+/* Duplication hook.  */
+void
+clone_infos_t::duplicate (cgraph_node *, cgraph_node *,
+			  clone_info *src, clone_info *dst)
+{
+  *dst = *src;
+}
+
+}  /* anon namespace  */
+
+/* Return thunk_info possibly creating new one.  */
+clone_info *
+clone_info::get_create (cgraph_node *node)
+{
+  if (!symtab->m_clones)
+    {
+      symtab->m_clones
+	 = new (ggc_alloc_no_dtor <clone_infos_t> ())
+	     clone_infos_t (symtab, true);
+      symtab->m_clones->disable_insertion_hook ();
+      symtab->m_clones->disable_duplication_hook ();
+    }
+  return symtab->m_clones->get_create (node);
+}