Re: Effectiveness of compilers today

kanze@us-es.sel.de (James Kanze) writes:
>... This code sequence is a well known trick regularly
>used by 8086 assembly programmers 10 years back. So it should hardly
>require a super-optimizer to find it...


That one code sequence is not the only justification for the
super-optimizer! Sure, a machine that gets programmed a lot in assembler
builds up a body of folklore over the years about cute ways of doing
things. Sometimes, some of it even gets written down. The point of the
super-optimizer is being able to discover these things systematically
without having to wait five years for the experience to build up
(especially since assembler programming is getting less common all the
time).
--
Henry Spencer @ U of Toronto Zoology | henry@zoo.toronto.edu utzoo!henry
--

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