ia64: -mfused-madd cleanup

ia64: -mfused-madd cleanup

	* config.gcc [ia64-*] (extra_options): Add fused-madd.opt.
	* config/ia64/ia64.opt: Remove mfused-madd.
	* config/ia64/ia64.c (ia64_rtx_costs): Handle FP MULT, PLUS, FMA.
	* config/ia64/vms.h (TARGET_DEFAULT): Remove MASK_FUSED_MADD.
	* config/ia64/vms64.h (TARGET_DEFAULT): Likewise.
	* config/ia64/ia64.h (TARGET_DEFAULT): Likewise.
	* config/ia64/hpux.h (TARGET_DEFAULT): Likewise.
	* config/ia64/vect.md (addv2sf3, subv2sf3): Generate FMA.
	(*addv2sf3_1, *addv2sf3_2, *subv2sf3_1, *subv2sf3_2): Remove.
	(fmav2sf4): Rename from fpma; use FMA code.
	(fmsv2sf4): Rename from fpms; use FMA code.
	(fnmav2sf4): Rename from *fpnma; use FMA code.
	* config/ia64/ia64.md (MODE_SDF): New iterator.
	(suffix): New mode attribute.
	(*maddsf4, *msubsf4, *nmaddsf4): Remove.
	(fmssf4): Rename from *fmssf4.
	(fnmasf4): Rename from *nfmasf4.
	(*madddf4, *madddf4_trunc, *msubdf4, *msubdf4_trunc): Remove.
	(*nmadddf4, *nmadddf4_truncsf): Remove.
	(fmsdf4): Rename from *fmsdf4.
	(fnmadf4): Rename from *nfmadf4.
	(*fmadf_trunc_sf, *fmsdf_trunc_sf, *fnmadf_trunc_sf): New.
	(*maddxf4, *maddxf4_truncsf, *maddxf4_truncdf): Remove.
	(*msubxf4, *msubxf4_truncsf, *msubxf4_truncdf): Remove.
	(*nmaddxf4, *nmaddxf4_truncsf, *nmaddxf4_truncdf): Remove.
	(fmsxf4): Rename from *fmsxf4.
	(fnmaxf4): Rename from *nfmaxf4.
	(*fmaxf_trunc_<MODE_SDF>, *fmsxf_trunc_<MODE_SDF>): New.
	(*fnmaxf_trunc_<MODE_SDF>): New.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@166780 138bc75d-0d04-0410-961f-82ee72b054a4