From: dennis51 AT my-deja DOT com Newsgroups: comp.os.msdos.djgpp Subject: Re: 203 much slower than 202 Date: Sun, 30 Jan 2000 17:58:59 GMT Organization: Deja.com - Before you buy. Lines: 43 Message-ID: <871u51$1gp$1@nnrp1.deja.com> References: NNTP-Posting-Host: 209.63.224.190 X-Article-Creation-Date: Sun Jan 30 17:58:59 2000 GMT X-Http-User-Agent: Mozilla/4.7 [en] (Win95; U) X-Http-Proxy: 1.1 smfc760-1 (NetCache 4.0R3), 1.0 x31.deja.com:80 (Squid/1.1.22) for client 216.119.53.62, 209.63.224.190 X-MyDeja-Info: XMYDJUIDdennis51 To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com In article , djgpp AT delorie DOT com wrote: > > On Sun, 30 Jan 2000 dennis51 AT my-deja DOT com wrote: > > > Yes, the slow part is CC1PLUS. > > This *is* expected. > > > And, no, the program does not run any faster. > > It is about 0.5% larger and about 1% slower. > > I suggest to experiment with various individual optimizations, like the FAQ > advises in section 14.2. When I used info to find out the optimizations available, I found this: `-funroll-loops' Perform the optimization of loop unrolling. This is only done for loops whose number of iterations can be determined at compile time or run time. -----^^^^^^^^^^^ I think those last three words there are wrong. As stated, ALL loops would be included, and there would be no use for `-funroll-all-loops'. > > Well, if one of my programs suddenly went from 23 seconds > > to 32 seconds you can be sure I would investigate it, and fix it. > > I don't think there's a fix for this one, since the optimzations > performed by GCC are now so much more elaborate. Where can I find a list of these new optimizations? Dennis Yelle Sent via Deja.com http://www.deja.com/ Before you buy.