[range-op] Enable value/mask propagation in range-op.

Throw the switch in range-ops to make full use of the value/mask
information instead of only the nonzero bits.  This will cause most of
the operators implemented in range-ops to use the value/mask
information calculated by CCP's bit_value_binop() function which
range-ops uses.  This opens up more optimization opportunities.

In follow-up patches I will change the global range setter
(set_range_info) to be able to save the value/mask pair, and make both
CCP and IPA be able to save the known ones bit info, instead of
throwing it away.

gcc/ChangeLog:

	* range-op.cc (irange_to_masked_value): Remove.
	(update_known_bitmask): Update irange value/mask pair instead of
	only updating nonzero bits.

gcc/testsuite/ChangeLog:

	* gcc.dg/pr83073.c: Adjust testcase.

0 files changed, 0 insertions, 0 deletions