2010-07-05 Richard Guenther <rguenther@suse.de>

2010-07-05  Richard Guenther  <rguenther@suse.de>

	* double-int.h (double_int_sub): Declare.
	* double-int.c (double_int_sub): New function.
	* dwarf2out.c (field_byte_offset): Use it.
	* fixed-value.c (do_fixed_add): Likewise.
	(do_fixed_multiply): Likewise.
	(do_fixed_divide): Likewise.
	* tree-predcom.c (add_ref_to_chain): Likewise.
	(determine_roots_comp): Likewise.
	* tree-ssa-loop-niter.c (derive_constant_upper_bound_ops): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@161836 138bc75d-0d04-0410-961f-82ee72b054a4