1 files changed, 31 insertions, 0 deletions
diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c
index 7b702f00765..e1fcb0be831 100644
--- a/gcc/tree-ssa-alias.c
+++ b/gcc/tree-ssa-alias.c
@@ -3193,3 +3193,34 @@ struct tree_opt_pass pass_create_structure_vars =
   TODO_dump_func,	 /* todo_flags_finish */
   0			 /* letter */
 };
+
+/* Reset the DECL_CALL_CLOBBERED flags on our referenced vars.  In
+   theory, this only needs to be done for globals.  */
+
+static unsigned int
+reset_cc_flags (void)
+{
+  tree var;
+  referenced_var_iterator rvi;
+
+  FOR_EACH_REFERENCED_VAR (var, rvi)
+    DECL_CALL_CLOBBERED (var) = false;
+  return 0;
+}
+
+struct tree_opt_pass pass_reset_cc_flags =
+{
+  NULL,		 /* name */
+  NULL,  	 /* gate */
+  reset_cc_flags, /* execute */
+  NULL,			 /* sub */
+  NULL,			 /* next */
+  0,			 /* static_pass_number */
+  0,			 /* tv_id */
+  PROP_referenced_vars |PROP_cfg, /* properties_required */
+  0,			 /* properties_provided */
+  0,			 /* properties_destroyed */
+  0,			 /* todo_flags_start */
+  0,         	         /* todo_flags_finish */
+  0			 /* letter */
+};