re PR c/89888 (When switch controlling expression is promoted from type narrower than int, GCC does not diagnose identical cases)

	PR c/89888
	* c-common.h (c_add_case_label): Remove orig_type and outside_range_p
	arguments.
	(c_do_switch_warnings): Remove outside_range_p argument.
	* c-common.c (check_case_bounds): Removed.
	(c_add_case_label): Remove orig_type and outside_range_p arguments.
	Don't call check_case_bounds.  Fold low_value as well as high_value.
	* c-warn.c (c_do_switch_warnings): Remove outside_range_p argument.
	Check for case labels outside of range of original type here and
	adjust them.
c/
	* c-typeck.c (struct c_switch): Remove outside_range_p member.
	(c_start_case): Don't clear it.
	(do_case): Adjust c_add_case_label caller.
	(c_finish_case): Adjust c_do_switch_warnings caller.
cp/
	* decl.c (struct cp_switch): Remove outside_range_p member.
	(push_switch): Don't clear it.
	(pop_switch): Adjust c_do_switch_warnings caller.
	(finish_case_label): Adjust c_add_case_label caller.
testsuite/
	* c-c++-common/pr89888.c: New test.
	* g++.dg/torture/pr40335.C: Change dg-bogus into dg-warning.
	Don't expect -Wswitch-unreachable warning.

From-SVN: r270455