OT (now really): Re: Re: Re: [Mplayer-users] Gibraltar

Arpi arpi at thot.banki.hu
Tue Aug 28 19:48:06 CEST 2001


> >Why are no MMX-like instructions in java-asm instruction set?
> >They should introduce SIMD extensions for java...
> How about inline assembler? That would do the trick :-)
> Btw. is there "inline java bytecode"? That would be cool, too...
I wrote a prog called jdisasm to disassembly (readable!) java bytecode.
I used it to discover how compilers work, how to do things in java to
get best bytecode if i compile it... something like some people did with

Btw java microcode is too high-level, and translation java->bytecode is
strict, so you can't get any speed boost using bytecode assembly instead of
java. It is just parsed java source described by bytes :(

But java instruction set could be extended with some lowlevel stuff and
SIMD-like vector instructions, it should help multimedia apps a lot!
and as most new cpu has simd-like stuff (sparc, intel, alpha) the
JIT engines can compile them to native ones.

So, I say: java is the "portable assembly language" but currently too
limited :(

A'rpi / Astral & ESP-team

mailto:arpi at thot.banki.hu

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