{
			name:      "DUFFZERO",
			aux:       "Int64",
			argLength: 2,
			reg: regInfo{
				inputs:   []regMask{buildReg("DI")},
				clobbers: buildReg("DI"),
			},
			faultOnNilArg0: true,
			unsafePoint:    true, // FP maintenance around DUFFCOPY can be clobbered by interrupts
		},

		// arg0 = address of memory to zero
		// arg1 = # of 8-byte words to zero
		// arg2 = value to store (will always be zero)