From owner-freebsd-current Tue May 25 21:20:26 1999 Delivered-To: freebsd-current@freebsd.org Received: from fep8.mail.ozemail.net (fep8.mail.ozemail.net [203.2.192.102]) by hub.freebsd.org (Postfix) with ESMTP id E75C11509D for ; Tue, 25 May 1999 21:20:22 -0700 (PDT) (envelope-from c9710216@atlas.newcastle.edu.au) Received: from atlas.newcastle.edu.au (slnew51p29.ozemail.com.au [203.108.150.45]) by fep8.mail.ozemail.net (8.9.0/8.6.12) with ESMTP id OAA08120 for ; Wed, 26 May 1999 14:20:19 +1000 (EST) Message-ID: <374B7669.E8463ABF@atlas.newcastle.edu.au> Date: Wed, 26 May 1999 14:19:53 +1000 From: obituary X-Mailer: Mozilla 4.6 [en] (X11; I; FreeBSD 4.0-CURRENT i386) X-Accept-Language: en MIME-Version: 1.0 To: current@FreeBSD.ORG Subject: Re: More compiler option comparisons References: <199905251635.MAA11353@khavrinen.lcs.mit.edu> <19990525133459.B17956@dan.emsphone.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Dan Nelson wrote: > -O4 doesn't exist in egcs (or it didn't a month or so ago). According > to the source, -O2 enables all optimizations except -funroll-all-loops, > and all -O3 does is enable -funroll-all-loops. I think I recall reading somewhere that EGCS uses -O numbers > 3 to test experimental optimizations. -jake (obituary) Powered by FreeBSD c9710216@atlas.newcastle.edu.au http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message