Fixed problem related to vec_ld in c++ mode.

Approved by Aldy Hernandez.

From-SVN: r81715

gcc/ChangeLog

+2004-05-11  Fariborz Jahanian  <fjahanian@apple.com>
+
+	* config/rs6000/rs6000.c (rs6000_handle_altivec_attribute):
+	Add const qualifier to altivec vector type if one is needed.
+
 2004-05-11  Paul Brook  <paul@codesourcery.com>
 
 	* flags.h (flag_short_enums): Update comment.

gcc/config/rs6000/rs6000.c

@@ -15175,6 +15175,9 @@ rs6000_handle_altivec_attribute (tree *node, tree name, tree args,
     default: break;
     }
 
+  if (result && result != type && TYPE_READONLY (type))
+    result = build_qualified_type (result, TYPE_QUAL_CONST);
+
   *no_add_attrs = true;  /* No need to hang on to the attribute.  */
 
   if (!result)