From: "Alexei A. Frounze" Newsgroups: comp.os.msdos.djgpp Subject: Re: inefficiency of GCC output code & -O problem Date: Tue, 11 Apr 2000 08:29:42 +0400 Organization: MTU-Intel ISP Lines: 29 Message-ID: <38F2AA36.33206DD9@mtu-net.ru> References: <38F20E7A DOT 3330E9A4 AT mtu-net DOT ru> <38F23A21 DOT A59621A1 AT inti DOT gov DOT ar> NNTP-Posting-Host: ppp104-21.dialup.mtu-net.ru Mime-Version: 1.0 Content-Type: text/plain; charset=koi8-r Content-Transfer-Encoding: 7bit X-Trace: gavrilo.mtu.ru 955428645 14359 212.188.104.21 (11 Apr 2000 04:50:45 GMT) X-Complaints-To: usenet-abuse AT mtu DOT ru NNTP-Posting-Date: 11 Apr 2000 04:50:45 GMT X-Mailer: Mozilla 4.61 [en] (Win95; I) X-Accept-Language: en,ru To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com salvador wrote: > > Is it a normal thing, if one instruction that adds something to ESP(or EBP) is > > followed by sutracting instruction that works with the same register? > > ? When it discards ESP change after a call to subroutine and plus sometimes one extra add/sub. But they could be combined altogether to the only one instruction. > > an error encounters: > > "Error: Error: Missing ')' assumed" > > "Error: Error: Ignoring junk `(%ebp))' after expression")? > > W/o the -O2 switch it's compiled fine. Isn't it a little bit strange? > > Can you show a small example? I guess that's an error in your inline assembler > code, but I can't know without the actual code. 21KB of a C file that depends on 3 other modules. :)) I'll try. But I don't know what's wrong, since it _is_ compiled normally w/o -O switch. Strange thingy. later, Alexei A. Frounze ----------------------------------------- Homepage: http://alexfru.chat.ru Mirror: http://members.xoom.com/alexfru