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Date:      Mon, 11 Nov 2002 13:20:13 -0500 (EST)
From:      John Baldwin <jhb@FreeBSD.org>
To:        Wilko Bulte <wkb@freebie.xs4all.nl>
Cc:        Andrew Gallatin <gallatin@cs.duke.edu>, alpha@FreeBSD.ORG, Poul-Henning Kamp <phk@critter.freebsd.dk>
Subject:   Re: ev4/5/6 issue ?
Message-ID:  <XFMail.20021111132013.jhb@FreeBSD.org>
In-Reply-To: <20021111190224.B50999@freebie.xs4all.nl>

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On 11-Nov-2002 Wilko Bulte wrote:
> On Mon, Nov 11, 2002 at 12:23:15PM -0500, John Baldwin wrote:
>> 
>> On 11-Nov-2002 Poul-Henning Kamp wrote:
>> > In message <15823.51765.171947.796322@grasshopper.cs.duke.edu>, Andrew Gallatin
>> >  writes:
>> > 
>> >>Your initial assertion that this might be happening because the
>> >>libraries are built for ev6 on beast could be true.  Can you verify
>> >>that that 12001f4e4 is indeed inside a library function using nm? 
>> > 
>> > Well, GDB said that much already.
>> > 
>> >>That doesn't solve the initial problem of why your make was busted,
>> >>though.  If its in the libs, then your libs are likely busted too.
>> >>Perhaps you'll also need to build a libc on beast, explicitly
>> >>setting your cpuflags to ev4.  Or perhaps the compiler is emitting
>> >>FIX instructions when it should not.
>> > 
>> > I think ev4 should be the default on beast.
>> 
>> This release wasn't built on beast.  It was built on a DS20 (which
>> is an EV6).  However, it should be built with '-mcpu=ev4 -mtune=ev6'
>> so it should not be using any !ev4 instructions.  Perhaps -mtune
>> is broken?
>> 
>> Hmm, actually, the whole release was compiled with
> 
> Is this 4.7R we are talking about?
> 
>> '-mcpu=ev5 -mtune=ev5'.  I do know that on alpha gcc "adjusts" itself
>> to whatever CPU it is built on, so maybe because the gcc in the release
>> make world was built on an EV6 it thinks it can emit EV6 instructions?
> 
> I tested 4.7-RCs on EV4 machines (AS200, AS500, PC64) without incident.
> 
> Poul: what machine did you have? /me has a secret cache of Alpha CPUs
> here.. :-P

No, this is a 5.0 snapshot.  Compiled on the same exact machine as 4.7,
but under -current rathern than under -stable.

-- 

John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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