Oppolzer - Informatik / Blog

That reminds me of an old story where someone tried to test the performance of
programming languages by coding the following short program in PL/1 and
ASSEMBLER (this was on the now historic Telefunken TR 440 hardware):

SUM = 0;
DO I = 1 TO 100000;
    SUM = SUM + I;
END;
PUT SKIP LIST (SUM);

The result was: PL/1 was much much faster, because the optimizing compiler
unrolled the loop and completely performed the computation during compile time
and simply generated code to print the result. This was the MULTICS PL/1
compiler, which was sold to the Telefunken company and ported to the TR 440.

The ASSEMBLER programmer, of course, coded the loop.

Kind regards

Bernd



Am 05.04.2011 08:45, schrieb M.T.:
> This is already over, but aside of instruction sequence and use of
> newer instructions vs older......here is what I thought:
>
> qualification of the COBOL-coder vs. the q of the HLASM-person
>
> --
> M.
>