[Bug target/35496] [4.4 Regression] test failures between revs. 132950 and 132974

[ubizjak at gmail dot com]

------- Comment #16 from ubizjak at gmail dot com  2008-03-10 12:48 -------
(In reply to comment #14)
> Does MS bitfield struct require 8byte alignment for long long field
> for 32bit target?

Can you try following patch (this will aling DImode values to their natural
alignment - if bigger than default alignment - when MS bitfield is used):

Index: stor-layout.c
===================================================================
--- stor-layout.c       (revision 133071)
+++ stor-layout.c       (working copy)
@@ -699,6 +699,9 @@ update_alignment_for_field (record_layou
                 && ! integer_zerop (DECL_SIZE (rli->prev_field)))))
        {
          unsigned int type_align = TYPE_ALIGN (type);
+         unsigned int type_size
+           = tree_low_cst (TYPE_SIZE_UNIT (type), 1) * BITS_PER_UNIT;
+         type_align = MAX (type_align, type_size);
          type_align = MAX (type_align, desired_align);
          if (maximum_field_alignment != 0)
            type_align = MIN (type_align, maximum_field_alignment);


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35496