From: Doug Evans <dje@transmeta.com>
To: "Frank Ch. Eigler" <fche@redhat.com>
Cc: cgen@sources.redhat.com, sid@sources.redhat.com
Subject: Re: [RFC] New cpu --- Morpho ms1
Date: Thu, 16 Jun 2005 15:42:00 -0000 [thread overview]
Message-ID: <17073.40390.435362.400645@casey.transmeta.com> (raw)
In-Reply-To: <20050616152212.GC27067@redhat.com>
Frank Ch. Eigler writes:
> Hi -
>
> On Wed, Jun 15, 2005 at 02:46:38PM -0700, Doug Evans wrote:
> > Imagine if bison or autoconf had encoded in them knowledge of particular
> > applications that used them.
> > [...]
>
> Well, the RTL model needed extension to allow for delayed operations.
> Since this part of the RTL was only used for instruction semantics,
> and thus simulators, adding some more specialized code is not that bad.
- nit: it's not necessarily the case that insn semantics would only
be used by simulators
- e.g. the operand tables derived from insn semantics are used by m32r gas
- even if it were, the patch hardwires the test to SID-SIMULATOR
- adding specialized code can be "that bad" because without adequate
commenting like "do as I say, not as I do", more and more such code
creeps in over time
- imagine if there's 20 different apps (as in (eq? APPLICATION mumble))
all with their own little tweaks to rtl-c.scm
Remove the appearance of the text "SID" from rtl-c.scm and parameterize
the feature on something generic and I'd be happier.
next prev parent reply other threads:[~2005-06-16 15:42 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-08 20:19 Dave Brolley
2005-06-13 14:55 ` Frank Ch. Eigler
2005-06-15 21:37 ` Dave Brolley
2005-06-15 21:46 ` Doug Evans
2005-06-16 14:22 ` Dave Brolley
2005-06-16 15:22 ` Frank Ch. Eigler
2005-06-16 15:42 ` Doug Evans [this message]
2005-06-16 15:49 ` Frank Ch. Eigler
2005-06-16 16:04 ` Doug Evans
2005-06-15 21:39 ` Dave Brolley
2005-06-14 10:25 ` Nick Clifton
2005-06-15 15:40 ` Dave Brolley
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