re PR target/37846 (Option -mno-fused-madd should be supported on IA-64)

re PR target/37846 (Option -mno-fused-madd should be supported on IA-64)

	PR target/37846
	* config/ia64/ia64.opt (mfused-madd): New.
	* config/ia64/ia64.h (TARGET_DEFAULT): Set MASK_FUSED_MADD.
	* config/ia64/hpux.h (TARGET_DEFAULT): Ditto.
	* config/ia64/ia64.md (maddsf4, msubsf4, nmaddsf4,
	madddf4, madddf4_trunc, msubdf4, msubdf4_trunc, nmadddf4,
	nmadddf4_truncsf, maddxf4, maddxf4_truncsf, maddxf4_truncdf,
	msubxf4, msubxf4_truncsf msubxf4_truncdf, nmaddxf4,
	nmaddxf4_truncsf, nmaddxf4_truncdf): Check TARGET_FUSED_MADD.
	* config/ia64/vect.md (addv2sf3, subv2sf3): Force fpma/fpms
	instruction if !TARGET_FUSED_MADD.
	(fpma, fpms): Remove colon from name.

From-SVN: r147782