FYI compiling PIR function calls

[Leopold Toetsch]

There seems to be the impression that generating PIR calls from a compiler is 
hard because it may look like:

  $S0 = obj.'_meth'(arg1, arg2)

but this also works:

    .pcc_begin
    .arg "hello"
    .arg "\n"
    .invocant obj
    .meth_call "_meth"
    .result $S0
    .pcc_end

There's a similar construct for return values.
leo