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From: | NoEmailAds AT execpc DOT com (Chris Giese) |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: GCC 3.1 and DJGPP - observations. |
Date: | Wed, 05 Jun 2002 02:53:29 GMT |
Organization: | PROPULSION GROUP |
References: | <3CFC9165 DOT 47E43C09 AT yahoo DOT com> <adi8rv$dtf$1 AT nets3 DOT rz DOT RWTH-Aachen DOT DE> |
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To: | djgpp AT delorie DOT com |
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Reply-To: | djgpp AT delorie DOT com |
Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de> wrote: >CBFalconer <cbfalconer AT yahoo DOT com> wrote: > >> 3) All versions were compiled with O2. Looking at the generated >> code with "objdump -dS" it appears as if the optimization is quite >> different. > >It's supposed to be. The new optimization engine is one of the major >new features advertised for GCC-3.x. It would have been rather >un-interesting if it didn't effect the optimized code, wouldn't it? Do you know if new GCC can use registers AH and AL at the same time? For two 8-bit variables?
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