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Date: Sun, 5 Oct 2008 14:55:12 +0200
From: Thiemo Seufer <ths@networkno.de>
Subject: Re: [Qemu-devel] [PATCH, RFC] Update qemu-tech.texi, needs
	verification
Message-ID: <20081005125512.GC27524@networkno.de>
References: <f43fc5580810050144t7f1d6d15ie006558f63f10953@mail.gmail.com>
	<20081005122621.GA18592@edgar.se.axis.com>
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To: "Edgar E. Iglesias" <edgar.iglesias@axis.com>
Cc: Blue Swirl <blauwirbel@gmail.com>, qemu-devel <qemu-devel@nongnu.org>

Edgar E. Iglesias wrote:
> On Sun, Oct 05, 2008 at 11:44:47AM +0300, Blue Swirl wrote:
> > Hi,
> > 
> > Currently qemu-tech.texi is no longer in synch with QEMU development.
> > There are obsoleted references to code copying and dyngen versions,
> > TCG has changed a lot regarding code generation and target/host status
> > is no longer accurate.
> > 
> > In this patch I've tried to update the document based on my
> > understanding of how stuff works and what is the status of various
> > targets. Please comment.
> 
> Hello Blue,
> 
> Great that somebody updates the docs!
> I've got a comment:
> 
>  @node Condition code optimisations
>  @section Condition code optimisations
> @@ -343,15 +363,20 @@
>  the condition codes are not needed by the next instructions, no
>  condition codes are computed at all.
> 
> +This optimization is not yet implemented on other targets.
> +
> 
> At least CRIS does something similar, I guess it's not as nice as the one for x86 but it's there :)

Also, it isn't implementable on MIPS, since MIPS has no condition
flags...


Thiemo