Is there a document that describes the meaning of all Oasys warnings and a table listing what possible actions to take with respect to TA- messages?
Also on the synthesis log, I see that oasys reports a lot of information with labels such as loop__name__number or name__loop__number and I am not sure what is the significance of the __loop__ tag.
You can find information about warnings and errors in Appendix C of the Oasys-RTL User’s Manual.
Regarding the "loop" messages - those are simply messages about the internal execution. They don't have any impact or relevance for users, so you can disregard them.