Add pixel compare VIS intrinsics.

Add pixel compare VIS intrinsics.

	* config/sparc/sparc.md (UNSPEC_FCMPLE, UNSPEC_FCMPNE, UNSPEC_FCMPGT,
	UNSPEC_FCMPEQ): New unspec codes.
	(fcmple16_vis, fcmple32_vis, fcmpne16_vis, fcmpne32_vis, fcmpgt16_vis,
	fcmpgt32_vis, fcmpeq16_vis, fcmpeq32_vis): New patterns.
	* config/sparc/sparc.c (sparc_vis_init_builtins): Create builtins for
	new pixel compare VIS patterns.
	* config/sparc/visintrin.h (__vis_fcmple16, __vis_fcmple32,
	__vis_fcmpne16, __vis_fcmpne32, __vis_fcmpgt16, __vis_fcmpgt32,
	__vis_fcmpeq16, __vis_fcmpeq32): New.
	* doc/extend.texi: Document new pixel compare VIS intrinsics.

From-SVN: r179072