// {sub} the subdiagonal alignment. "LEFT" means rows will be padded to the
    // left, "RIGHT" means rows will be padded ot the right.  The default is
    // "RIGHT_LEFT".
    StringRef align = op->getAttrOfType<StringAttr>("align").getValue();
    enum Alignment { kLeft, kRight };

    // default is RIGHT_LEFT
    Alignment superdiagonal_align = kRight;

	var inlMarksByPos map[src.XPos][]*obj.Prog

	var argLiveIdx int = -1 // argument liveness info index

	// These control cache line alignment; if the required portion of
	// a cache line is not available, then pad to obtain cache line
	// alignment.  Not implemented on all architectures, may not be
	// useful on all architectures.
	var hotAlign, hotRequire int64

	if base.Debug.AlignHot > 0 {