From owner-cvs-all  Sun Jun 14 12:23:23 1998
Return-Path: <owner-cvs-all@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id MAA16226
          for cvs-all-outgoing; Sun, 14 Jun 1998 12:23:23 -0700 (PDT)
          (envelope-from owner-cvs-all@FreeBSD.ORG)
Received: from godzilla.zeta.org.au (godzilla.zeta.org.au [203.15.68.22])
          by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id MAA15562;
          Sun, 14 Jun 1998 12:18:52 -0700 (PDT)
          (envelope-from bde@godzilla.zeta.org.au)
Received: (from bde@localhost)
	by godzilla.zeta.org.au (8.8.7/8.8.7) id FAA15242;
	Mon, 15 Jun 1998 05:18:51 +1000
Date: Mon, 15 Jun 1998 05:18:51 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199806141918.FAA15242@godzilla.zeta.org.au>
To: bde@FreeBSD.ORG, dima@tejblum.dnttm.rssi.ru
Subject: Re: cvs commit: src/sys/nfs nfs_bio.c nfs_subs.c
Cc: cvs-all@FreeBSD.ORG, cvs-committers@FreeBSD.ORG, cvs-sys@FreeBSD.ORG
Sender: owner-cvs-all@FreeBSD.ORG
Precedence: bulk

>>   Pre-2.8 versions of gcc generate a call to __divdi3() for all 64-bit
>>   signed divisions, but egcs optimizes them to a shift and fixup when
>>   the divisor is a constant power of 2.  Unfortunately, it generates
>>   a call to __cmpdi2() for the fixup, although all except possibly
>>   ancient versions of gcc and egcs do ordinary 64-bit comparisons
>>   inline.
>
>A quite fresh egcs snapshot inline the comparison even in this case.

Still slower than not doing it :-).

Bruce

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message