Pl/SQL coding efficiency

[Tony Damon]

From a performance/"size of compiled code" standpoint, which would
be more efficient:

1) code lots of "insert into xyz values('abc');" statements.

or

2) code an insert procedure "isrt(varchar2)" that performs the
actual insert, and then call that procedure many times?

Does the overhead of calling a procedure to do an insert
outweigh the multiple "insert into" statements coded? Or,
upon compilation does oracle convert these "insert into"
statements into a call itself?

Thanks,
Tony Damon