* dwarf2out.c (mem_loc_descriptor): Use DW_OP_mod for UMOD instead
	of MOD, handle MOD using DW_OP_{over,over,div,mul,minus}.
	(loc_list_from_tree): Don't handle unsigned division.  Handle
	signed modulo using DW_OP_{over,over,div,mul,minus}.
	* unwind-dw2.c (execute_stack_op): Handle DW_OP_mod using unsigned
	modulo instead of signed.

	* gcc.dg/cleanup-13.c: Expect DW_OP_mod to do unsigned modulo instead
	of signed, add a few new tests.

From-SVN: r156063