* config/rs6000/predicates.md (scc_rev_comparison_operator): New.
	* config/rs6000/rs6000.md (*isel_reversed_signed_<mode>): New.
	(*isel_reversed_unsigned_<mode>): New.
	* config/rs6000/rs6000.c (output_isel): Accept GE/GEU/LE/LEU/NE
	as valid comparisons and adjust operands and output appropriately.
	(rs6000_rtx_costs) <CONST_INT>: Accept NE as a cost-0 outer_code.

From-SVN: r165395