cvt.c (cp_get_callee): New.

	* cvt.c (cp_get_callee): New.

	* constexpr.c (get_function_named_in_call): Use it.
	* cxx-pretty-print.c (postfix_expression): Use it.
	* except.c (check_noexcept_r): Use it.
	* method.c (check_nontriv): Use it.
	* tree.c (build_aggr_init_expr): Use it.
	* cp-tree.h: Declare it.

From-SVN: r235596

gcc/cp/ChangeLog

+2016-04-28  Jason Merrill  <jason@redhat.com>
+
+	* cvt.c (cp_get_callee): New.
+	* constexpr.c (get_function_named_in_call): Use it.
+	* cxx-pretty-print.c (postfix_expression): Use it.
+	* except.c (check_noexcept_r): Use it.
+	* method.c (check_nontriv): Use it.
+	* tree.c (build_aggr_init_expr): Use it.
+	* cp-tree.h: Declare it.
+
 2015-04-27  Ryan Burn  <contact@rnburn.com>
 	    Jeff Law  <law@redhat.com>
 

gcc/cp/constexpr.c

@@ -1044,21 +1044,7 @@ save_fundef_copy (tree fun, tree copy)
 static tree
 get_function_named_in_call (tree t)
 {
-  tree fun = NULL;
-  switch (TREE_CODE (t))
-    {
-    case CALL_EXPR:
-      fun = CALL_EXPR_FN (t);
-      break;
-
-    case AGGR_INIT_EXPR:
-      fun = AGGR_INIT_EXPR_FN (t);
-      break;
-
-    default:
-      gcc_unreachable();
-      break;
-    }
+  tree fun = cp_get_callee (t);
   if (fun && TREE_CODE (fun) == ADDR_EXPR
       && TREE_CODE (TREE_OPERAND (fun, 0)) == FUNCTION_DECL)
     fun = TREE_OPERAND (fun, 0);

gcc/cp/cp-tree.h

@@ -5694,6 +5694,7 @@ extern tree ocp_convert				(tree, tree, int, int,
 extern tree cp_convert				(tree, tree, tsubst_flags_t);
 extern tree cp_convert_and_check                (tree, tree, tsubst_flags_t);
 extern tree cp_fold_convert			(tree, tree);
+extern tree cp_get_callee			(tree);
 extern tree convert_to_void			(tree, impl_conv_void,
                                  		 tsubst_flags_t);
 extern tree convert_force			(tree, tree, int,

gcc/cp/cvt.c

@@ -904,6 +904,20 @@ ocp_convert (tree type, tree expr, int convtype, int flags,
   return error_mark_node;
 }
 
+/* If CALL is a call, return the callee; otherwise null.  */
+
+tree
+cp_get_callee (tree call)
+{
+  if (call == NULL_TREE)
+    return call;
+  else if (TREE_CODE (call) == CALL_EXPR)
+    return CALL_EXPR_FN (call);
+  else if (TREE_CODE (call) == AGGR_INIT_EXPR)
+    return AGGR_INIT_EXPR_FN (call);
+  return NULL_TREE;
+}
+
 /* When an expression is used in a void context, its value is discarded and
    no lvalue-rvalue and similar conversions happen [expr.static.cast/4,
    stmt.expr/1, expr.comma/1].  This permits dereferencing an incomplete type

gcc/cp/cxx-pretty-print.c

@@ -490,8 +490,7 @@ cxx_pretty_printer::postfix_expression (tree t)
     case AGGR_INIT_EXPR:
     case CALL_EXPR:
       {
-	tree fun = (code == AGGR_INIT_EXPR ? AGGR_INIT_EXPR_FN (t)
-					   : CALL_EXPR_FN (t));
+	tree fun = cp_get_callee (t);
 	tree saved_scope = enclosing_scope;
 	bool skipfirst = false;
 	tree arg;

gcc/cp/except.c

@@ -1158,8 +1158,7 @@ check_noexcept_r (tree *tp, int * /*walk_subtrees*/, void * /*data*/)
 	 translation unit, creating ODR problems.
 
          We could use TREE_NOTHROW (t) for !TREE_PUBLIC fns, though... */
-      tree fn = (code == AGGR_INIT_EXPR
-		 ? AGGR_INIT_EXPR_FN (t) : CALL_EXPR_FN (t));
+      tree fn = cp_get_callee (t);
       tree type = TREE_TYPE (fn);
       gcc_assert (POINTER_TYPE_P (type));
       type = TREE_TYPE (type);

gcc/cp/method.c

@@ -1002,12 +1002,8 @@ get_inherited_ctor (tree ctor)
 static tree
 check_nontriv (tree *tp, int *, void *)
 {
-  tree fn;
-  if (TREE_CODE (*tp) == CALL_EXPR)
-    fn = CALL_EXPR_FN (*tp);
-  else if (TREE_CODE (*tp) == AGGR_INIT_EXPR)
-    fn = AGGR_INIT_EXPR_FN (*tp);
-  else
+  tree fn = cp_get_callee (*tp);
+  if (fn == NULL_TREE)
     return NULL_TREE;
 
   if (TREE_CODE (fn) == ADDR_EXPR)

gcc/cp/tree.c

@@ -470,11 +470,8 @@ build_aggr_init_expr (tree type, tree init)
   if (processing_template_decl)
     return init;
 
-  if (TREE_CODE (init) == CALL_EXPR)
-    fn = CALL_EXPR_FN (init);
-  else if (TREE_CODE (init) == AGGR_INIT_EXPR)
-    fn = AGGR_INIT_EXPR_FN (init);
-  else
+  fn = cp_get_callee (init);
+  if (fn == NULL_TREE)
     return convert (type, init);
 
   is_ctor = (TREE_CODE (fn) == ADDR_EXPR