re PR middle-end/42397 (FAIL: gfortran.dg/lto/20091028-2 f_lto_20091028-2_0.o-f_lto_20091028-2_1.o link, internal compiler error)

2009-12-17  Richard Guenther  <rguenther@suse.de>

	PR middle-end/42397
	* builtins.c (get_object_alignment): Properly deal with
	a CONST_DECL base.
	* expr.c (emit_block_move_hints): Assert the alignment makes
	sense.

From-SVN: r155316