* jump.c (reversed_comparison_code_parts, reversed_comparison_code):
	New.
	(can_reverse_comparison_p): Rewrite to use reversed_comparison_code.
	(reverse_condition_maybe_unordered): Abort on unsigned comparisons.
	* rtl.h (reversed_comparison_code_parts, reversed_comparison_code):
	Declare.

From-SVN: r38779