Hi,

three items:
- Remove DECL_UNBOUND_CLASS_TEMPLATE_P, unused outside cp-tree.h.
- Use get_containing_scope in 4 places (obvious I guess)
- Use existing predicates in 2 places (likewise)

Tested x86_64-linux. Ok?

Thanks,
Paolo.

PS: In my opinion we should also rename DECL_FUNCTION_MEMBER_P to DECL_MEMBER_FUNCTION_P. Objections?

///////////////////////////
2013-04-01  Paolo Carlini  <paolo.carl...@oracle.com>

        * cp-tree.h (DECL_UNBOUND_CLASS_TEMPLATE_P): Remove.
        (DECL_FUNCTION_TEMPLATE_P): Adjust.

        * cxx-pretty-print.c (pp_cxx_nested_name_specifier,
        pp_cxx_qualified_id): Use get_containing_scope.
        * parser.c (cp_parser_class_head): Likewise.
        * pt.c (push_template_decl_real): Likewise.

        * decl2.c (import_export_decl): Use DECL_TEMPLOID_INSTANTIATION.
        * pt.c (unify): Use CP_INTEGRAL_TYPE_P.
Index: cp-tree.h
===================================================================
--- cp-tree.h   (revision 197302)
+++ cp-tree.h   (working copy)
@@ -3730,14 +3730,10 @@ more_aggr_init_expr_args_p (const aggr_init_expr_a
 #define DECL_TEMPLATE_TEMPLATE_PARM_P(NODE) \
   (TREE_CODE (NODE) == TEMPLATE_DECL && DECL_TEMPLATE_PARM_P (NODE))
 
-/* Nonzero if NODE is a TEMPLATE_DECL representing an
-   UNBOUND_CLASS_TEMPLATE tree node.  */
-#define DECL_UNBOUND_CLASS_TEMPLATE_P(NODE) \
-  (TREE_CODE (NODE) == TEMPLATE_DECL && !DECL_TEMPLATE_RESULT (NODE))
-
-#define DECL_FUNCTION_TEMPLATE_P(NODE)  \
-  (TREE_CODE (NODE) == TEMPLATE_DECL \
-   && !DECL_UNBOUND_CLASS_TEMPLATE_P (NODE) \
+/* Nonzero for a DECL that represents a function template.  */
+#define DECL_FUNCTION_TEMPLATE_P(NODE)                          \
+  (TREE_CODE (NODE) == TEMPLATE_DECL                            \
+   && DECL_TEMPLATE_RESULT (NODE) != NULL_TREE                 \
    && TREE_CODE (DECL_TEMPLATE_RESULT (NODE)) == FUNCTION_DECL)
 
 /* Nonzero for a DECL that represents a class template or alias
Index: cxx-pretty-print.c
===================================================================
--- cxx-pretty-print.c  (revision 197302)
+++ cxx-pretty-print.c  (working copy)
@@ -260,7 +260,7 @@ pp_cxx_nested_name_specifier (cxx_pretty_printer *
 {
   if (!SCOPE_FILE_SCOPE_P (t) && t != pp->enclosing_scope)
     {
-      tree scope = TYPE_P (t) ? TYPE_CONTEXT (t) : DECL_CONTEXT (t);
+      tree scope = get_containing_scope (t);
       pp_cxx_nested_name_specifier (pp, scope);
       pp_cxx_template_keyword_if_needed (pp, scope, t);
       pp_cxx_unqualified_id (pp, t);
@@ -308,7 +308,7 @@ pp_cxx_qualified_id (cxx_pretty_printer *pp, tree
 
     default:
       {
-       tree scope = TYPE_P (t) ? TYPE_CONTEXT (t) : DECL_CONTEXT (t);
+       tree scope = get_containing_scope (t);
        if (scope != pp->enclosing_scope)
          {
            pp_cxx_nested_name_specifier (pp, scope);
Index: decl2.c
===================================================================
--- decl2.c     (revision 197302)
+++ decl2.c     (working copy)
@@ -2572,8 +2572,7 @@ import_export_decl (tree decl)
       else
        comdat_p = true;
     }
-  else if (DECL_TEMPLATE_INSTANTIATION (decl)
-          || DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (decl))
+  else if (DECL_TEMPLOID_INSTANTIATION (decl))
     {
       /* DECL is an implicit instantiation of a function or static
         data member.  */
Index: parser.c
===================================================================
--- parser.c    (revision 197302)
+++ parser.c    (working copy)
@@ -18773,9 +18773,7 @@ cp_parser_class_head (cp_parser* parser,
 
          for (scope = TREE_TYPE (type);
               scope && TREE_CODE (scope) != NAMESPACE_DECL;
-              scope = (TYPE_P (scope)
-                       ? TYPE_CONTEXT (scope)
-                       : DECL_CONTEXT (scope)))
+              scope = get_containing_scope (scope))
            if (TYPE_P (scope)
                && CLASS_TYPE_P (scope)
                && CLASSTYPE_TEMPLATE_INFO (scope)
Index: pt.c
===================================================================
--- pt.c        (revision 197302)
+++ pt.c        (working copy)
@@ -4803,9 +4803,7 @@ push_template_decl_real (tree decl, bool is_friend
              /* Can happen in erroneous input.  */
              break;
            else
-             current = (TYPE_P (current)
-                        ? TYPE_CONTEXT (current)
-                        : DECL_CONTEXT (current));
+             current = get_containing_scope (current);
          }
 
       /* Check that the parms are used in the appropriate qualifying scopes
@@ -16750,8 +16748,7 @@ unify (tree tparms, tree targs, tree parm, tree ar
       else if (same_type_p (TREE_TYPE (arg), tparm))
        /* OK */;
       else if ((strict & UNIFY_ALLOW_INTEGER)
-              && (TREE_CODE (tparm) == INTEGER_TYPE
-                  || TREE_CODE (tparm) == BOOLEAN_TYPE))
+              && CP_INTEGRAL_TYPE_P (tparm))
        /* Convert the ARG to the type of PARM; the deduced non-type
           template argument must exactly match the types of the
           corresponding parameter.  */

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