tree-hash-traits.h (tree_hash): New class.

gcc/
	* tree-hash-traits.h (tree_hash): New class.
	* except.c: Include tree-hash-traits.h.
	(tree_hash_traits): Use tree_hash.

From-SVN: r224970

gcc/ChangeLog

 2015-06-25  Richard Sandiford  <richard.sandiford@arm.com>
 
+	* tree-hash-traits.h (tree_hash): New class.
+	* except.c: Include tree-hash-traits.h.
+	(tree_hash_traits): Use tree_hash.
+
+2015-06-25  Richard Sandiford  <richard.sandiford@arm.com>
+
 	* tree-hash-traits.h (tree_ssa_name_hasher): New class.
 	* sese.c: Include tree-hash-traits.h.
 	(rename_map_hasher): Use tree_ssa_name_hasher.

gcc/except.c

@@ -159,14 +159,11 @@ along with GCC; see the file COPYING3.  If not see
 #include "tree-pass.h"
 #include "cfgloop.h"
 #include "builtins.h"
+#include "tree-hash-traits.h"
 
 static GTY(()) int call_site_base;
 
-struct tree_hash_traits : default_hashmap_traits
-{
-  static hashval_t hash (tree t) { return TREE_HASH (t); }
-};
-
+struct tree_hash_traits : simple_hashmap_traits <tree_hash> {};
 static GTY (()) hash_map<tree, tree, tree_hash_traits> *type_to_runtime_map;
 
 /* Describe the SjLj_Function_Context structure.  */

gcc/tree-hash-traits.h

@@ -67,4 +67,16 @@ tree_ssa_name_hash::hash (tree t)
   return SSA_NAME_VERSION (t);
 }
 
+/* Hasher for general trees, based on their TREE_HASH.  */
+struct tree_hash : ggc_ptr_hash <tree_node>
+{
+  static hashval_t hash (tree);
+};
+
+inline hashval_t
+tree_hash::hash (tree t)
+{
+  return TREE_HASH (t);
+}
+
 #endif