re PR target/8795 ([PPC] Altivec related bugs concerning gcc 3.3 and mainline)

	PR c++/8795
	* tree.h (build_method_type_directly): Declare.
	* c-common.c (handle_vector_size_attributes): Handle METHOD_TYPEs.
	(vector_size_helper): Likewise.
	* tree.c (build_method_type_directly): New function.
	(build_method_type): Use it.

From-SVN: r70774

gcc/tree.c

@@ -3850,35 +3850,37 @@ build_function_type_list (tree return_type, ...)
   return args;
 }
 
-/* Construct, lay out and return the type of methods belonging to class
-   BASETYPE and whose arguments and values are described by TYPE.
-   If that type exists already, reuse it.
-   TYPE must be a FUNCTION_TYPE node.  */
+/* Build a METHOD_TYPE for a member of BASETYPE.  The RETTYPE (a TYPE)
+   and ARGTYPES (a TREE_LIST) are the return type and arguments types
+   for the method.  An implicit additional parameter (of type
+   pointer-to-BASETYPE) is added to the ARGTYPES.  */
 
 tree
-build_method_type (tree basetype, tree type)
+build_method_type_directly (tree basetype,
+			    tree rettype,
+			    tree argtypes)
 {
   tree t;
-  unsigned int hashcode;
+  tree ptype;
+  int hashcode;
 
   /* Make a node of the sort we want.  */
   t = make_node (METHOD_TYPE);
 
-  if (TREE_CODE (type) != FUNCTION_TYPE)
-    abort ();
-
   TYPE_METHOD_BASETYPE (t) = TYPE_MAIN_VARIANT (basetype);
-  TREE_TYPE (t) = TREE_TYPE (type);
+  TREE_TYPE (t) = rettype;
+  ptype = build_pointer_type (basetype);
 
   /* The actual arglist for this function includes a "hidden" argument
      which is "this".  Put it into the list of argument types.  */
+  argtypes = tree_cons (NULL_TREE, ptype, argtypes);
+  TYPE_ARG_TYPES (t) = argtypes;
 
-  TYPE_ARG_TYPES (t)
-    = tree_cons (NULL_TREE,
-		 build_pointer_type (basetype), TYPE_ARG_TYPES (type));
+  /* If we already have such a type, use the old one and free this one.
+     Note that it also frees up the above cons cell if found.  */
+  hashcode = TYPE_HASH (basetype) + TYPE_HASH (rettype) +
+    type_hash_list (argtypes);
 
-  /* If we already have such a type, use the old one and free this one.  */
-  hashcode = TYPE_HASH (basetype) + TYPE_HASH (type);
   t = type_hash_canon (hashcode, t);
 
   if (!COMPLETE_TYPE_P (t))
@@ -3887,6 +3889,22 @@ build_method_type (tree basetype, tree type)
   return t;
 }
 
+/* Construct, lay out and return the type of methods belonging to class
+   BASETYPE and whose arguments and values are described by TYPE.
+   If that type exists already, reuse it.
+   TYPE must be a FUNCTION_TYPE node.  */
+
+tree
+build_method_type (tree basetype, tree type)
+{
+  if (TREE_CODE (type) != FUNCTION_TYPE)
+    abort ();
+
+  return build_method_type_directly (basetype, 
+				     TREE_TYPE (type),
+				     TYPE_ARG_TYPES (type));
+}
+
 /* Construct, lay out and return the type of offsets to a value
    of type TYPE, within an object of type BASETYPE.
    If a suitable offset type exists already, reuse it.  */