Update 4.8.1 to 4.8.3.

My previous drop was the wrong version. The platform mingw is
currently using 4.8.3, not 4.8.1 (not sure how I got that wrong).

From ftp://ftp.gnu.org/gnu/gcc/gcc-4.8.3/gcc-4.8.3.tar.bz2.

Bug: http://b/26523949
Change-Id: Id85f1bdcbbaf78c7d0b5a69e74c798a08f341c35

1 files changed, 200 insertions, 0 deletions

diff --git a/gcc-4.8.3/gcc/ipa-ref.c b/gcc-4.8.3/gcc/ipa-ref.c
new file mode 100644
index 000000000..044e23727
--- /dev/null
+++ b/gcc-4.8.3/gcc/ipa-ref.c
@@ -0,0 +1,200 @@
+/* Interprocedural reference lists.
+   Copyright (C) 2010-2013 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 "tree.h"
+#include "ggc.h"
+#include "target.h"
+#include "cgraph.h"
+
+static const char *ipa_ref_use_name[] = {"read","write","addr","alias"};
+
+/* Return ipa reference from REFERING_NODE or REFERING_VARPOOL_NODE
+   to REFERED_NODE or REFERED_VARPOOL_NODE. USE_TYPE specify type
+   of the use and STMT the statement (if it exists).  */
+
+struct ipa_ref *
+ipa_record_reference (symtab_node referring_node,
+		      symtab_node referred_node,
+		      enum ipa_ref_use use_type, gimple stmt)
+{
+  struct ipa_ref *ref;
+  struct ipa_ref_list *list, *list2;
+  ipa_ref_t *old_references;
+
+  gcc_checking_assert (!stmt || is_a <cgraph_node> (referring_node));
+  gcc_checking_assert (use_type != IPA_REF_ALIAS || !stmt);
+
+  list = &referring_node->symbol.ref_list;
+  old_references = vec_safe_address (list->references);
+  vec_safe_grow (list->references, vec_safe_length (list->references) + 1);
+  ref = &list->references->last ();
+
+  list2 = &referred_node->symbol.ref_list;
+  list2->referring.safe_push (ref);
+  ref->referred_index = list2->referring.length () - 1;
+  ref->referring = referring_node;
+  ref->referred = referred_node;
+  ref->stmt = stmt;
+  ref->use = use_type;
+
+  /* If vector was moved in memory, update pointers.  */
+  if (old_references != list->references->address ())
+    {
+      int i;
+      for (i = 0; ipa_ref_list_reference_iterate (list, i, ref); i++)
+	ipa_ref_referred_ref_list (ref)->referring[ref->referred_index] = ref;
+    }
+  return ref;
+}
+
+/* Remove reference REF.  */
+
+void
+ipa_remove_reference (struct ipa_ref *ref)
+{
+  struct ipa_ref_list *list = ipa_ref_referred_ref_list (ref);
+  struct ipa_ref_list *list2 = ipa_ref_referring_ref_list (ref);
+  vec<ipa_ref_t, va_gc> *old_references = list2->references;
+  struct ipa_ref *last;
+
+  gcc_assert (list->referring[ref->referred_index] == ref);
+  last = list->referring.last ();
+  if (ref != last)
+    {
+      list->referring[ref->referred_index] = list->referring.last ();
+      list->referring[ref->referred_index]->referred_index 
+	  = ref->referred_index;
+    }
+  list->referring.pop ();
+
+  last = &list2->references->last ();
+  if (ref != last)
+    {
+      *ref = *last;
+      ipa_ref_referred_ref_list (ref)->referring[ref->referred_index] = ref;
+    }
+  list2->references->pop ();
+  gcc_assert (list2->references == old_references);
+}
+
+/* Remove all references in ref list LIST.  */
+
+void
+ipa_remove_all_references (struct ipa_ref_list *list)
+{
+  while (vec_safe_length (list->references))
+    ipa_remove_reference (&list->references->last ());
+  vec_free (list->references);
+}
+
+/* Remove all references in ref list LIST.  */
+
+void
+ipa_remove_all_referring (struct ipa_ref_list *list)
+{
+  while (list->referring.length ())
+    ipa_remove_reference (list->referring.last ());
+  list->referring.release ();
+}
+
+/* Dump references in LIST to FILE.  */
+
+void
+ipa_dump_references (FILE * file, struct ipa_ref_list *list)
+{
+  struct ipa_ref *ref;
+  int i;
+  for (i = 0; ipa_ref_list_reference_iterate (list, i, ref); i++)
+    {
+      fprintf (file, "%s/%i (%s)",
+               symtab_node_asm_name (ref->referred),
+               ref->referred->symbol.order,
+	       ipa_ref_use_name [ref->use]);
+    }
+  fprintf (file, "\n");
+}
+
+/* Dump referring in LIST to FILE.  */
+
+void
+ipa_dump_referring (FILE * file, struct ipa_ref_list *list)
+{
+  struct ipa_ref *ref;
+  int i;
+  for (i = 0; ipa_ref_list_referring_iterate (list, i, ref); i++)
+    {
+      fprintf (file, "%s/%i (%s)",
+               symtab_node_asm_name (ref->referring),
+               ref->referring->symbol.order,
+	       ipa_ref_use_name [ref->use]);
+    }
+  fprintf (file, "\n");
+}
+
+/* Clone all references from SRC to DEST_NODE or DEST_VARPOOL_NODE.  */
+
+void
+ipa_clone_references (symtab_node dest_node,
+		      struct ipa_ref_list *src)
+{
+  struct ipa_ref *ref;
+  int i;
+  for (i = 0; ipa_ref_list_reference_iterate (src, i, ref); i++)
+    ipa_record_reference (dest_node,
+			  ref->referred,
+			  ref->use, ref->stmt);
+}
+
+/* Clone all referring from SRC to DEST_NODE or DEST_VARPOOL_NODE.  */
+
+void
+ipa_clone_referring (symtab_node dest_node,
+		    struct ipa_ref_list *src)
+{
+  struct ipa_ref *ref;
+  int i;
+  for (i = 0; ipa_ref_list_referring_iterate (src, i, ref); i++)
+    ipa_record_reference (ref->referring,
+			  dest_node,
+			  ref->use, ref->stmt);
+}
+
+/* Return true when execution of REF can lead to return from
+   function. */
+bool
+ipa_ref_cannot_lead_to_return (struct ipa_ref *ref)
+{
+  return cgraph_node_cannot_return (ipa_ref_referring_node (ref));
+}
+
+/* Return true if list contains an alias.  */
+bool
+ipa_ref_has_aliases_p (struct ipa_ref_list *ref_list)
+{
+  struct ipa_ref *ref;
+  int i;
+  for (i = 0; ipa_ref_list_referring_iterate (ref_list, i, ref); i++)
+    if (ref->use == IPA_REF_ALIAS)
+      return true;
+  return false;
+}