From owner-freebsd-current  Fri Apr  5 23:45:11 1996
Return-Path: owner-current
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.3/8.7.3) id XAA12534
          for current-outgoing; Fri, 5 Apr 1996 23:45:11 -0800 (PST)
Received: from time.cdrom.com (time.cdrom.com [204.216.27.226])
          by freefall.freebsd.org (8.7.3/8.7.3) with ESMTP id XAA12529
          for <current@freebsd.org>; Fri, 5 Apr 1996 23:45:09 -0800 (PST)
Received: from localhost (localhost [127.0.0.1]) by time.cdrom.com (8.7.5/8.6.9) with SMTP id XAA00445 for <current@freebsd.org>; Fri, 5 Apr 1996 23:44:41 -0800 (PST)
To: current@freebsd.org
Subject: pgcc and kernels..
Date: Fri, 05 Apr 1996 23:44:41 -0800
Message-ID: <443.828776681@time.cdrom.com>
From: "Jordan K. Hubbard" <jkh@time.cdrom.com>
Sender: owner-current@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

After reading that provocative article about how awesome pgcc's
pentium optimization is, I naturally had to try it with today's
-current.

I notice that the kernel compile perks along fairly nicely with
`-O -pipe -mpentium' until one tries to compile kern_clock.c,
at which point the following define in machine/clock.h is flagged
as in error:
	
#define I586_CYCLECTR(x) \
        __asm __volatile(".byte 0x0f, 0x31" : "=A" (x))

I've never been all that comfortable with gcc's asm() syntax, seeing
as I use it pretty much never, so I'm not sure who's "right" here - us
or gcc?

					Jordan