// paste. has two input registers, and an L field, unlike other 3 operand instructions.
		return op + " " + args[0] + "," + args[1] + "," + args[2]
	case SYNC:
		if args[0] == "$1" {
			return "LWSYNC"
		}
		return "HWSYNC"

	case ISEL:
		return "ISEL " + args[3] + "," + args[1] + "," + args[2] + "," + args[0]

	// store instructions always have the memory operand at the end, no need to reorder
	// indexed stores handled separately

				gnuArg(&inst, 2, inst.Args[2], PC))
			buf.WriteString(asm)
			startArg = 4
		}

	case "sync":
		lsc := inst.Args[0].(Imm)<<4 | inst.Args[1].(Imm)
		switch lsc {
		case 0x00:
			buf.WriteString("hwsync")
			startArg = 2
		case 0x10:
			buf.WriteString("lwsync")
			startArg = 2
		default:
			buf.WriteString(opName)
		}

	case "lbarx", "lharx", "lwarx", "ldarx":
		// If EH == 0, omit printing EH.