From: "Paulo J. Matos" <pocmatos@gmail.com>
To: gcc@gcc.gnu.org
Subject: Re: splitting add instructions
Date: Tue, 19 Jul 2011 10:21:00 -0000 [thread overview]
Message-ID: <j03gde$gba$1@dough.gmane.org> (raw)
In-Reply-To: <j03epo$700$1@dough.gmane.org>
On 19/07/11 09:21, Paulo J. Matos wrote:
> hummm, we are still using the old mode for condition code handling. From
> what you're saying we need to use the new CCmode. I was looking at the
> internal documents and even though it doesn't seem required to have a
> hard register to keep the condition codes, it is also hard to know how
> it is actually implemented. Is there any port which doesn't have a hard
> register representing a condition code, which used CCMode?
>
I have been looking at the rx port. Seems to be very similar to mine in
that it has an add and adc where both set the flags and no explicit hard
register for cc. Mine is actually simpler in that there is only CCmode
since we don't have floating point operations in the chip. Will use rx
as a guide! :)
--
PMatos
next prev parent reply other threads:[~2011-07-19 8:49 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-18 16:49 Paulo J. Matos
2011-07-18 16:59 ` Richard Henderson
2011-07-18 17:31 ` Paul Koning
2011-07-18 21:20 ` Richard Henderson
2011-07-19 8:27 ` Paulo J. Matos
2011-07-19 10:21 ` Paulo J. Matos [this message]
2011-07-19 15:42 ` Richard Henderson
2011-07-19 15:58 ` Paulo J. Matos
2011-07-19 16:08 ` Paulo J. Matos
2011-07-19 16:43 ` Richard Henderson
2011-07-19 12:57 ` Paul Koning
2011-07-19 8:30 ` Paulo J. Matos
2011-07-19 10:30 ` Paulo J. Matos
2011-07-19 10:52 ` Paulo J. Matos
2011-07-19 15:06 ` Paulo J. Matos
2011-07-19 15:09 ` DJ Delorie
2011-07-19 15:21 ` Paulo J. Matos
2011-07-19 15:42 ` Richard Henderson
2011-07-19 15:42 ` Paulo J. Matos
2011-07-18 17:29 ` Ian Lance Taylor
2011-07-19 8:49 ` Paulo J. Matos
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