Messages in this thread | | | Date | Fri, 18 Dec 1998 11:19:14 +0200 | From | Petko Manolov <> | Subject | Re: pgcc optimizationss |
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<!doctype html public "-//w3c//dtd html 4.0 transitional//en"> <html> Marc Lehmann wrote: <blockquote TYPE=CITE>Yeah, sure, but mentioning "it works fine with -O6" makes less-skilled <br>people use it, with sometimes bad results ;) <br> </blockquote> You are right of cource. But everybody has a head on his shoulders to think with ;-) <br>I only share information that hopefully can be used for bug fixes. This list is not for <br>amateurs ;-)) <blockquote TYPE=CITE>I hope Linus applies bug-fixes, yes ;)</blockquote> AFAIK Linus thinks egcs guys silently changed some concepts in inline asm <br>(clobber list) and now they are blaming the kernel. I can't say who is right but it's obvious <br>gcc and pgcc produced different inline asm code. I'm pretty sure they shouldn't ;-) <blockquote TYPE=CITE>Optimizations often interact with each other in subtle ways. Most(!) <br>of the bugs I find are caused by bugs in egcs that only come <br>apperent in some later optimization.</blockquote> I'm afraid i didn't understand this. <blockquote TYPE=CITE> <br>But egcs is getting better with each second, it even does hard register <br>flow analysis now ;) <p>Lets hope egcs makes a better gcc sooner than later!</blockquote> Right, I like pgcc and I wish to see it stable. <pre>-- Petko Manolov - petkan@varel.bg <A HREF="http://www.varel.bg/~petkan/">http://www.varel.bg/~petkan/</A></pre> </html>
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