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Date: | Tue, 18 Sep 2001 14:43:21 +0300 |
From: | "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il> |
Sender: | halo1 AT zahav DOT net DOT il |
To: | pavenis AT lanet DOT lv |
Message-Id: | <2561-Tue18Sep2001144320+0300-eliz@is.elta.co.il> |
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CC: | djgpp-workers AT delorie DOT com |
In-reply-to: | <Pine.A41.4.05.10109181108500.28200-100000@ieva06> (message from |
Andris Pavenis on Tue, 18 Sep 2001 11:24:42 +0300 (WET)) | |
Subject: | Re: GCC 2.9x and 3.x produces larger code |
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> Date: Tue, 18 Sep 2001 11:24:42 +0300 (WET) > From: Andris Pavenis <pavenis AT lanet DOT lv> > > I think one of the reasons is code and data alignment. For example > gcc-3.0.1 Linux to DJGPP cross-compiler generates: > '.p2align 4' before procedure code > '.p2align 4,,7' in some other places inside procedure (like > before then begin of loop) I don't think so: in two object files I compared (after "objdump -d"), I counted only 269 nop instructions, which is 269 bytes. That object file was 1.5KB larger when compiled with GCC 3.0.1. > These alignment instructions are generated also by gcc-2.95.3, so I think > it would be more correct to compare with that version when compiler > options for optimizing size are being used. Comparison with 2.95.3 yields similar results; that is, 2.95.3 also produces larger code.
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