PR middle-end/18520
	* dojump.c (compare_from_rtx): Clarify mode argument in function
	description.  Correct order of mode/cmp_mode arguments in call to
	simplify_relational_operation.  Check "tem" for COMPARISON_P.

	* gcc.dg/pr18520-1.c: New test case.

From-SVN: r90997