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From: | mdruiter AT cs DOT vu DOT nl (Ruiter de M) |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: [??] coaxing gcc into generating better code |
Date: | 3 Feb 1997 13:16:29 GMT |
Organization: | Fac. Wiskunde & Informatica, VU, Amsterdam |
Lines: | 24 |
Message-ID: | <5d4ofd$hv8@star.cs.vu.nl> |
References: | <5cicci$ljs AT news DOT service DOT uci DOT edu> |
NNTP-Posting-Host: | sloep28.cs.vu.nl |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
John Beppu (beppu AT rigel DOT oac DOT uci DOT edu) wrote: [code + assembly output snipped] : /* How horrible the second assembly output is. It's no good for : 486 and terrible for P5. (I don't know how P6 will feel about : it.) The command line parameters I invoked gcc with were: : : -S // assembly output : -O2 // optimizations : -fforce-addr // put ptrs into registers? : -fomit-frame-pointer : // uses esp for stackframe and frees ebp : : */ What you could try is to use the -m486 parameter, which will optimize for 486's instead of 386's. There is NO way to get Pentium-optimizations with your standard GCC. -- Groeten, Michel. http://www.cs.vu.nl/~mdruiter \----/==\----/ \ / \ / "Life is cool.", Beavis. \/ \/
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