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Re: Perl 5 Compiler, Again!

by flexvault (Parson)
on Aug 14, 2012 at 12:17 UTC ( #987338=note: print w/ replies, xml ) Need Help??


in reply to Perl 5 Compiler, Again!

Dear Monks,

Thanks to everyone for giving valid technical reasons for the lack of an integrated Perl 'compiler'. Actually I wrote a 'C' version of 'uxbasic', but abandoned it in favor of Perl. It worked, was fast, but lacked the feature rich capability of Perl. So I wrote an 'uxbasic' to Perl translator script that took many of my products and moved them to Perl. It was 99% correct, and with a minimum of debugging, I had a Perl version of my products that could continue to grow.

It's a lot more fun working with Perl than either 'C' or 'uxbasic'.

Thank you...Ed

"Well done is better than well said." - Benjamin Franklin


Comment on Re: Perl 5 Compiler, Again!
Re^2: Perl 5 Compiler, Again!
by rurban (Scribe) on Sep 20, 2012 at 23:22 UTC
    flexvault:

    There is an integrated compiler in perl5. And there are external compilers.

    You will not easily see what the integrated compiler in perl5 does, but you see some result with B::Concise. All the ex-OPs there are optimized out already.

    $ perl -MO=Concise -e'1+1' 3 <@> leave[1 ref] vKP/REFC ->(end) 1 <0> enter ->2 2 <;> nextstate(main 1 -e:1) v:{ ->3 - <0> ex-const v ->3
    E.g. 1=1 was constant folded here.
    $ perl -MO=Concise -e'$a=1+$a' 8 <@> leave[1 ref] vKP/REFC ->(end) 1 <0> enter ->2 2 <;> nextstate(main 1 -e:1) v:{ ->3 7 <2> sassign vKS/2 ->8 5 <2> add[t1] sK/2 ->6 3 <$> const(IV 1) s ->4 - <1> ex-rv2sv sK/1 ->5 4 <$> gvsv(*a) s ->5 - <1> ex-rv2sv sKRM*/1 ->7 6 <$> gvsv(*a) s ->7
    All the sv references rv2sv were optimized to direct gvsv accesses.

    perlcc is the backend for 3 external compilers.

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