From: Theo Honohan <theoh@chiark.greenend.org.uk>
To: 9fans@cse.psu.edu
Cc: theoh@chiark.greenend.org.uk
Subject: Re: [9fans] compilers - was GUI toolkit for Plan 9
Date: Tue, 26 Feb 2002 22:06:42 +0000 [thread overview]
Message-ID: <E16fpkn-0006l0-00@chiark.greenend.org.uk> (raw)
In-Reply-To: Your message of "Tue, 26 Feb 2002 21:34:51 GMT." <20020226213451.56e87b33.matt@proweb.co.uk>
Matt H wrote:
>
> Does anybody know how runtime optimizations such as those in the Crusoe
> chip fair at this? If optimization is tricky at compile time sounds like
> doing it at runtime must be hairy. Has anyone even tried to run plan9 on a
> Crusoe?
This is quite an interesting issue. It's actually a lot easier to
write a clever interpreter (like the Crusoe chip + software) that
optimizes code at runtime than it is to write an offline "binary
translator". The most obvious examples are the case of runtime code
generation, or self-modifying code; your static analysis of the
code you're translating has to be smart enough to see that coming.
An interpreter that recognizes and optimizes chunks of code
that get called repeatedly is much easier to write.
Incidentally, if your job involves having to explain these issues to
your boss, it's time to go... :-(
next prev parent reply other threads:[~2002-02-26 22:06 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-26 20:28 [9fans] " presotto
2002-02-26 21:34 ` [9fans] compilers - was " Matt H
2002-02-26 22:06 ` Theo Honohan [this message]
2002-02-27 0:21 ` Mike Haertel
2002-02-28 15:11 ` AMSRL-CI-CN
2002-02-28 16:55 ` Thomas Bushnell, BSG
2002-02-27 6:54 ` [9fans] " Eric Dorman
2002-02-27 10:20 ` Thomas Bushnell, BSG
2002-02-27 10:51 ` Lucio De Re
2002-02-27 13:27 ` Boyd Roberts
2002-02-27 14:20 ` Ish Rattan
2002-02-27 22:44 ` Thomas Bushnell, BSG
2002-02-28 4:41 ` Lucio De Re
2002-02-28 10:19 ` Thomas Bushnell, BSG
2002-02-28 10:14 ` Thomas Bushnell, BSG
2002-02-28 10:49 ` Matt H
2002-03-01 13:25 ` chad
2002-02-28 3:26 ` [9fans] GUI toolkit for Plan 9 [really GPL again!] Eric Dorman
2002-02-28 9:57 ` [9fans] GUI toolkit for Plan 9 ozan s yigit
2002-02-28 14:55 ` AMSRL-CI-CN
2002-02-26 22:17 [9fans] compilers - was " jmk
2002-02-27 2:38 Russ Cox
2002-02-27 9:28 Bengt Kleberg
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