committed: fix compilation failure for ports that don't use LEN parameter of MOVE_BY_PIECES_P

[Joern Rennecke]

Committed as obvious.

2012-10-31  Joern Rennecke  <joern.renne...@embecosm.com>

        * expr.c (can_move_by_pieces): Apply ATTRIBUTE_UNUSED to len.

Index: expr.c
===================================================================
--- expr.c      (revision 193034)
+++ expr.c      (working copy)
@@ -841,7 +841,7 @@ widest_int_mode_for_size (unsigned int s
    succeed.  */
 
 int
-can_move_by_pieces (unsigned HOST_WIDE_INT len,
+can_move_by_pieces (unsigned HOST_WIDE_INT len ATTRIBUTE_UNUSED,
                    unsigned int align ATTRIBUTE_UNUSED)
 {
   return MOVE_BY_PIECES_P (len, align);