re PR tree-optimization/69320 (wrong code generation at -O2 and higher)

re PR tree-optimization/69320 (wrong code generation at -O2 and higher)

2016-01-18  Jeff Law  <law@redhat.com>

	PR tree-optimization/69320
	* tree-ssa-dom.c (record_edge_info): For comparisons against a boolean
	ranged object, do nothing if the RHS constant is not [0..1].
	(optimize_stmt): Comparing a boolean ranged object against a
	constant outside [0..1] results in a compile-time constant.

	* tree-ssanames.c (ssa_name_has_boolean_range): Remove unnecessary
	test.

	PR tree-optimization/69320
	* gcc.c-torture/pr69320-1.c: New test.
	* gcc.c-torture/pr69320-2.c: New test.
	* gcc.c-torture/pr69320-3.c: New test.
	* gcc.c-torture/pr69320-4.c: New test.

From-SVN: r232548