rs6000.md (maxsf3): Use rs6000_emit_minmax.

rs6000.md (maxsf3): Use rs6000_emit_minmax.

	* config/rs6000/rs6000.md (maxsf3): Use rs6000_emit_minmax.
	(maxsf3+1): Delete.
	(minsf3): Use rs6000_emit_minmax.
	(minsf3+1): Generalize to handle both SMIN and SMAX.  Use
	rs6000_emit_minmax.
	(movsfcc): Use rs6000_emit_cmove.
	(fselsfsf4): Don't compare a CONST_INT with a floating-point value.
	Don't generate emit_fselsfsf4.
	(fseldfsf4): Likewise.
	(maxdf3): Use rs6000_emit_minmax.
	(maxdf3+1): Delete.
	(mindf3): Use rs6000_emit_minmax.
	(mindf3+1): Generalize to handle both SMIN and SMAX.  Use
	rs6000_emit_minmax.
	(movdfcc): Use rs6000_emit_cmove.
	(fseldfdf4): Don't compare a CONST_INT with a floating-point value.
	Don't generate emit_fselsfsf4.
	(fselsfdf4): Likewise.
	* config/rs6000/rs6000.c (zero_fp_constant): New predicate.
	(min_max_operator): New predicate.
	(rs6000_emit_cmove): New function.
	(rs6000_emit_minmax): New function.
	* config/rs6000/rs6000-protos.h: Prototype new functions.
	* config/rs6000/rs6000.h (PREDICATE_CODES): Add zero_fp_constant
	and min_max_operator.

	* config/rs6000/rs6000.c (output_cbranch): Handle all
	conditional types in the switch statement.

From-SVN: r42404