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From: Andreas Schwab <schwab@linux-m68k.org>
To: Gabriel Paubert <paubert@iram.es>
Subject: Re: Inline assembly queries [2]
References: <abe8a1fd0907022344k2eb9874ejdbda3209a7cadf40@mail.gmail.com>
	<20090703174031.GA12410@cynthia.pants.nu> <m23a9deb87.fsf@igel.home>
	<20090706065627.GA12499@iram.es>
Date: Tue, 07 Jul 2009 14:40:02 +0200
In-Reply-To: <20090706065627.GA12499@iram.es> (Gabriel Paubert's message of
	"Mon, 6 Jul 2009 08:56:27 +0200")
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Gabriel Paubert <paubert@iram.es> writes:

> On Fri, Jul 03, 2009 at 10:57:12PM +0200, Andreas Schwab wrote:
>> The 'Z' constraint is required for a memory operand for insns that don't
>> have an update form (which would be selected by the %U modifier).  
>
> Hmmm, I believed that it was for instructions that only have an indexed
> form (all Altivec, byte reverse, and l?arx/st?cx for atomic operations).
>
> Of course none of these instructions have an update form, but they don't
> have an offset encoded in the instruction either.

Yes, you are right.  IIRC there are either all u/x/ux forms or only the
x form.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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