Date: 24 Sep 1999 11:49:28 +0300 From: Ville-Pertti Keinonen <will@iki.fi> To: "Daniel C. Sobral" <dcs@newsguy.com> Cc: freebsd-current@freebsd.org Subject: Re: gcc optimizer in -current system ... Message-ID: <86yadwvgmf.fsf@not.demophon.com> In-Reply-To: "Daniel C. Sobral"'s message of "24 Sep 1999 10:10:40 %2B0300" References: <Pine.LNX.4.10.9909231904110.3469-100000@picard.mandrakesoft.de> <37EAEB1A.3B0E4263@newsguy.com.newsgate.clinet.fi>
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"Daniel C. Sobral" <dcs@newsguy.com> writes: > bsd@picard.mandrakesoft.de wrote: > > > > But specifying something too high (-O99) doesn't hurt - I'm using -O6 for > > gcc 2.95.1 (which, by the way, compiles almost everything in 3.3-RELEASE > > and 4.0-CURRENT, the only thing still troubling me with it is the kernel). > > The point is that it _does_ hurt. Anything above -O3 is _likely_ to > have bugs. That only applies to pgcc, which shouldn't be used as anything other than an experimental compiler, anyhow. Whether real future gcc versions will enable new optimizations at levels > 3 is, to my knowledge, an open question. I don't like the thought myself, because -O3 already includes an often undesirable optimization (automatic inlining). To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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