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Date: | Wed, 16 Jan 2002 21:25:42 +0200 |
From: | "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il> |
Sender: | halo1 AT zahav DOT net DOT il |
To: | djgpp AT delorie DOT com |
Message-Id: | <5567-Wed16Jan2002212542+0200-eliz@is.elta.co.il> |
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In-reply-to: | <Xns9198D540C7BFCgd678bcz5bAA@192.89.123.233> (message from no |
spam on Wed, 16 Jan 2002 18:53:25 GMT) | |
Subject: | Re: GCC 3.03 makes slow code |
References: | <Xns9198D540C7BFCgd678bcz5bAA AT 192 DOT 89 DOT 123 DOT 233> |
Reply-To: | djgpp AT delorie DOT com |
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> Newsgroups: comp.os.msdos.djgpp,gnu.gcc.help > From: no spam <no AT spam DOT com> > Date: Wed, 16 Jan 2002 18:53:25 GMT > > I was testing the latest GCC 3.03 (djgpp) and compiled an application > using switches -O9 -fomit-frame-pointer -mcpu=pentium -fschedule-insns2 > -fexpensive-optimizations the code it generated run 10-20% slower (on > Celeron-A CPU) compared to a version compiled with GCC 2.95 (using > identical switches). How does the code fare if you use -O2 instead of -O9?
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