re PR target/17962 (small fp vector uses sse/mmx vectors and is not aligned)

        PR 17962
        * stor-layout.c (layout_type): Set TYPE_ALIGN for vectors.

From-SVN: r89284

gcc/ChangeLog

 2004-10-19  Richard Hendeson  <rth@redhat.com>
 
+	PR 17962
+	* stor-layout.c (layout_type): Set TYPE_ALIGN for vectors.
+
+2004-10-19  Richard Hendeson  <rth@redhat.com>
+
 	* builtins.c (expand_builtin_memmove): If fold_builtin_memmove
 	succeeds, only expand the result.
 

gcc/stor-layout.c

@@ -1576,6 +1576,10 @@ layout_type (tree type)
 					         nunits_tree, 0);
 	TYPE_SIZE (type) = int_const_binop (MULT_EXPR, TYPE_SIZE (innertype),
 					    nunits_tree, 0);
+
+	/* Always natually align vectors.  This prevents ABI changes
+	   depending on whether or not native vector modes are supported.  */
+	TYPE_ALIGN (type) = tree_low_cst (TYPE_SIZE (type), 0);
         break;
       }