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Article #1759Re: Aggressive optimization
From: Dan Bernstein
Date: Thu, 18 Oct 1990 23:13
Date: Thu, 18 Oct 1990 23:13
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In article <1990Oct18.212844.14728@murdoch.acc.Virginia.EDU> gl8f@astsun7.astro.Virginia.EDU (Greg Lindahl) writes: > In article <20683:Oct1819:44:1490@kramden.acf.nyu.edu> brnstnd@kramden.acf.nyu.edu (Dan Bernstein) writes: > >Unsafe transformations and other optimizer bugs. As in sun% cc -O4. Not > >to pick on your compiler, which is otherwise rather nice. > Does Sun's -O4 have bugs, or is that warning in the cc man page > because C programmers leave off "volitile" where it's needed? Well, the latter can't be the explanation, because their cc doesn't even understand volatile. Hence the former must be true. ---Dan
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!yale!cmcl2!kramden.acf.nyu.edu!brnstnd From: brnstnd@kramden.acf.nyu.edu (Dan Bernstein) Newsgroups: comp.lang.misc Subject: Re: Aggressive optimization Message-ID: <25336:Oct1823:13:3990@kramden.acf.nyu.edu> Date: 18 Oct 90 23:13:39 GMT References: <1493@exodus.Eng.Sun.COM> <20683:Oct1819:44:1490@kramden.acf.nyu.edu> <1990Oct18.212844.14728@murdoch.acc.Virginia.EDU> Organization: IR Lines: 11