sh.c (sh_builtin_saveregs): Use get_varargs_alias_set.

        * sh.c (sh_builtin_saveregs): Use get_varargs_alias_set.
        (sh_build_va_list, sh_va_start, sh_va_arg): New.
        * sh.h (BUILD_VA_LIST_TYPE): New.
        (EXPAND_BUILTIN_VA_START, EXPAND_BUILTIN_VA_ARG): New.

From-SVN: r29415

gcc/config/sh/sh.h

@@ -1076,6 +1076,18 @@ extern int current_function_anonymous_args;
 #define SETUP_INCOMING_VARARGS(ASF, MODE, TYPE, PAS, ST) \
   current_function_anonymous_args = 1;
 
+/* Define the `__builtin_va_list' type for the ABI.  */
+#define BUILD_VA_LIST_TYPE(VALIST) \
+  (VALIST) = sh_build_va_list ()
+
+/* Implement `va_start' for varargs and stdarg.  */
+#define EXPAND_BUILTIN_VA_START(stdarg, valist, nextarg) \
+  sh_va_start (stdarg, valist, nextarg)
+
+/* Implement `va_arg'.  */
+#define EXPAND_BUILTIN_VA_ARG(valist, type) \
+  sh_va_arg (valist, type)
+
 /* Call the function profiler with a given profile label.
    We use two .aligns, so as to make sure that both the .long is aligned
    on a 4 byte boundary, and that the .long is a fixed distance (2 bytes)