I would not ride that tyre. Pretty sure I can see tube in the second photo, and that's asking for a sudden blowout.
You might choose to put a boot/patch on the inside of the tyre, JUST TO GET HOME.
You might boot it and use on an _indoor_ trainer tyre only. Might be okay on rollers, would make a great front-wheel tyre for a direct-drive trainer (ie, the wheel that doesn't turn at all.)
I certainly would not choose to ride on the road with that ever.
_**It is dead, buy a new tyre.**_