}
			// Count arguments which will need a register.
			narg := 0
			for _, a := range v.Args {
				// SP and SB are special registers and have no effect on
				// the allocation of general-purpose registers.
				if a.needRegister() && a.Op != OpSB && a.Op != OpSP {
					narg++
				}
			}
			if narg >= 2 && !v.Type.IsFlags() {
				// Don't move values with more than one input, as that may
				// increase register pressure.