Replace tptr.to_memref and tptr.from_memref with ptr.from_ptr and ptr.to_ptr.

[red1bluelost]

We can also avoid creating unit memrefs and casting to unranked because there is no longer a requirement to have static shape as far as I am aware.

[ziliangzl]

Hi,I think we should use tptr in func argument instead of using unrankedMemref, Is this what you mean?

[red1bluelost]

That is not what I mean. This is just about replacing these ops with their respective upstream counterparts.

What do you mean by use tptr in func argument? There is no TPtrDialect types.