Date: Fri, 14 Jan 2005 22:07:16 +0100 From: Wilko Bulte <wb@freebie.xs4all.nl> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-alpha@freebsd.org Subject: Re: processor type. Message-ID: <20050114210716.GA17430@freebie.xs4all.nl> In-Reply-To: <20050114202618.GA17050@freebie.xs4all.nl> References: <16866.32790.398095.651691@canoe.dclg.ca> <200501141043.00568.jhb@FreeBSD.org> <20050114182655.GC630@freebie.xs4all.nl> <200501141425.07994.jhb@FreeBSD.org> <20050114202618.GA17050@freebie.xs4all.nl>
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On Fri, Jan 14, 2005 at 09:26:18PM +0100, Wilko Bulte wrote..
> On Fri, Jan 14, 2005 at 02:25:07PM -0500, John Baldwin wrote..
> > On Friday 14 January 2005 01:26 pm, Wilko Bulte wrote:
> > > On Fri, Jan 14, 2005 at 10:43:00AM -0500, John Baldwin wrote..
> > >
> > > > On Friday 14 January 2005 02:43 am, Wilko Bulte wrote:
> > > > > On Thu, Jan 13, 2005 at 04:26:51PM -0800, David O'Brien wrote..
> > > > >
> > > > > > On Mon, Jan 10, 2005 at 08:16:06AM -0500, David Gilbert wrote:
> > > > > > > I see in the compiler lines crawling by that gcc is asked to
> > > > > > > optimize for 'EV5' while being compatible with 'EV4'. My Alpha is
> > > > > > > an EV4 --- I'm wondering if I would see better performance with a
> > > > > > > different flag there, but the gcc manual doesn't even acknowledge
....
> > on "common" machines while still supporting older models. There's certainly
> > no harm in bumping the default -mtune to ev6 if we feel that most Alpha users
> > are ev6 rather than ev5.
>
> Hm, I suppose I could do this in HEAD.
>
> I'll run an experiment with a worldstone built using an ev5 world and compare
> that to a worldstone built using an ev6 world. Stay tuned.
Things are not entirely clean it seems on RELENG_4_11 and probably RELENG_4
as well:
cc -c -O -pipe -mcpu=ev6 -Wall -Wredundant-decls -Wnested-externs
-Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline
-Wcast-qual -fformat-extensions -ansi -nostdinc -I- -I. -I/usr/src/sys
-I/usr/src/sys/../include -I/usr/src/sys/contrib/ipfilter -D_KERNEL
-include opt_global.h -mno-fp-regs -Wa,-mev56
/usr/src/sys/kern/uipc_syscalls.c
cc -c -O -pipe -mcpu=ev6 -Wall -Wredundant-decls -Wnested-externs
-Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline
-Wcast-qual -fformat-extensions -ansi -nostdinc -I- -I. -I/usr/src/sys
-I/usr/src/sys/../include -I/usr/src/sys/contrib/ipfilter -D_KERNEL
-include opt_global.h -mno-fp-regs -Wa,-mev56
/usr/src/sys/kern/uipc_usrreq.c
{standard input}: Assembler messages:
{standard input}:2145: Error: opcode `minsw4' not supported for target ev56
*** Error code 1
Stop in /usr/obj/usr/src/sys/DS10.
This -mev56 should obviously not be there. Duh..
The buildworld itself ran fine with CPUTYPE=ev6 in /etc/make.conf
--
Wilko Bulte wilko@FreeBSD.org
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