varasm.c (initializer_constant_valid_p): Call lang_expand_constant to simplify the constant.

	* varasm.c (initializer_constant_valid_p): Call
	lang_expand_constant to	simplify the constant.

From-SVN: r32084

gcc/ChangeLog

+2000-02-20  Mark Mitchell  <mark@codesourcery.com>
+
+	* varasm.c (initializer_constant_valid_p): Call
+	lang_expand_constant to	simplify the constant.
+
 2000-02-20  Bruce Korb  <bkorb@gnu.org>
 
 	* fixinc/inclhack.def(stdio_va_list):

gcc/varasm.c

@@ -4025,6 +4025,11 @@ initializer_constant_valid_p (value, endtype)
      tree value;
      tree endtype;
 {
+  /* Give the front-end a chance to convert VALUE to something that
+     looks more like a constant to the back-end.  */
+  if (lang_expand_constant)
+    value = (*lang_expand_constant) (value);
+
   switch (TREE_CODE (value))
     {
     case CONSTRUCTOR: