* tree-vrp (zero_nonzero_bits_from_bounds): Rename to...
	(wide_int_set_zero_nonzero_bits): ...this.
	(zero_nonzero_bits_from_vr): Rename to...
	(vrp_set_zero_nonzero_bits): ...this.
	(extract_range_from_multiplicative_op_1): Abstract wide int
	code...
	(wide_int_range_multiplicative_op): ...here.
	(extract_range_from_binary_expr_1): Extract wide int binary
	operations into their own functions.
	(wide_int_range_lshift): New.
	(wide_int_range_can_optimize_bit_op): New.
	(wide_int_range_shift_undefined_p): New.
	(wide_int_range_bit_xor): New.
	(wide_int_range_bit_ior): New.
	(wide_int_range_bit_and): New.
	(wide_int_range_trunc_mod): New.
	(extract_range_into_wide_ints): New.
	(vrp_shift_undefined_p): New.
	(extract_range_from_multiplicative_op): New.
	(vrp_can_optimize_bit_op): New.
	* tree-vrp.h (value_range::dump): New.
	(wide_int_range_multiplicative_op): New.
	(wide_int_range_lshift):New.
	(wide_int_range_shift_undefined_p): New.
	(wide_int_range_bit_xor): New.
	(wide_int_range_bit_ior): New.
	(wide_int_range_bit_and): New.
	(wide_int_range_trunc_mod): New.
	(zero_nonzero_bits_from_bounds): Rename to...
	(wide_int_set_zero_nonzero_bits): ...this.
	(zero_nonzero_bits_from_vr): Rename to...
	(vrp_set_zero_nonzero_bits): ...this.
	(range_easy_mask_min_max): Rename to...
	(wide_int_range_can_optimize_bit_op): this.

From-SVN: r263218