Re: Is Java useful for writing (C/C++) compiler

Flemming Gram Christensen <gram@ull.mjolner.dk>
20 Apr 2000 00:35:48 -0400

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Related articles
Is Java useful for writing (C/C++) compiler vdbent@mail.com (Kees & Annette van der Bent) (2000-04-16)
Re: Is Java useful for writing (C/C++) compiler patrykz@ilion.eu.org (Patryk Zadarnowski) (2000-04-16)
Re: Is Java useful for writing (C/C++) compiler rsherry@home.com (Robert Sherry) (2000-04-17)
Re: Is Java useful for writing (C/C++) compiler pmb@dina.kvl.dk (Peter Bertelsen) (2000-04-17)
Re: Is Java useful for writing (C/C++) compiler gram@ull.mjolner.dk (Flemming Gram Christensen) (2000-04-20)
Re: Is Java useful for writing (C/C++) compiler iank@bearcave.com (2000-04-20)
Re: Is Java useful for writing (C/C++) compiler jandk@easynet.co.uk (Jonathan Barker) (2000-04-20)
Re: Is Java useful for writing (C/C++) compiler dale@cs.rmit.edu.au (dale) (2000-04-21)
Re: Is Java useful for writing (C/C++) compiler dvdeug@x8b4e53cd.dhcp.okstate.edu (2000-04-21)
Re: Is Java useful for writing (C/C++) compiler nr@labrador.eecs.harvard.edu (2000-04-25)
Re: Is Java useful for writing (C/C++) compiler jandk@easynet.co.uk (Jonathan Barker) (2000-04-25)
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From: Flemming Gram Christensen <gram@ull.mjolner.dk>
Newsgroups: comp.compilers
Date: 20 Apr 2000 00:35:48 -0400
Organization: University of Aarhus, Department of Computer Science (DAIMI)
References: 00-04-125 00-04-133
Keywords: Java, practice

Robert Sherry <rsherry@home.com> writes:
> If performance was not important then I would use Java and
> PCCTS. I think PCCTS is a wonderful tool for compiler developament and
> Java is a fine langauge. However, even with a JIT am sure that your
> performance will suffer.


I think you are right. It is not evident to me how a Java JIT
could improve on the MIPS32 simulator. Sound like it build around a
large switch:


switch inst->type {
  case Add: ...
...




The Java JIT's are good at incremental compilation and at inlining of
virtuals etc. Not better that regular C++ compiler at inlining statically
bound calls.


Flemming






> Robert Sherry
>
> Kees & Annette van der Bent wrote:
> > [Does it make sense to write C/C++ compilers in Java, and what
> > tools would one use? ]

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