2001-12-05  Daniel Berlin  <dan@cgsoftware.com>

	* config/rs6000/rs6000.h (enum rs6000_builtins): Add more altivec
	builtins.

	* config/rs6000/rs6000.md: Modeling of 7450 altivec changed to
	better reflect reality (change from Apple's tree).
	Add more of altivec instructions.
	Add ftruncv4sf2 pattern.
	Remove more unspecs (vector merge instructions, etc).

	* config/rs6000/rs6000.c (bdesc_3arg): New, for 3 argument altivec
	builtins.
	(bdesc_1arg): New, for 1 argument altivec builtins.
	(altivec_expand_builtin): Handle unary and ternary ops.
	(altivec_init_builtins): Ditto.

From-SVN: r47681