Path: csiph.com!eternal-september.org!feeder.eternal-september.org!news.iecc.com!.POSTED.news.iecc.com!nerds-end From: Gene Wirchenko Newsgroups: comp.compilers Subject: Re: Language standards vs. implementation, was Re: A right alternative to IEEE-754's format Date: Tue, 10 Apr 2018 11:07:46 -0700 Organization: A noiseless patient Spider Lines: 15 Sender: news@iecc.com Approved: comp.compilers@iecc.com Message-ID: <18-04-033@comp.compilers> References: <0d4dc7f8-1819-43e5-8082-6ff7aee5f41b@googlegroups.com> <2018Mar31.160556@mips.complang.tuwien.ac.at> <2018Mar31.195714@mips.complang.tuwien.ac.at> <18-04-018@comp.compilers> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit Injection-Info: gal.iecc.com; posting-host="news.iecc.com:2001:470:1f07:1126:0:676f:7373:6970"; logging-data="60526"; mail-complaints-to="abuse@iecc.com" Keywords: optimize, question Posted-Date: 11 Apr 2018 13:21:28 EDT X-submission-address: compilers@iecc.com X-moderator-address: compilers-request@iecc.com X-FAQ-and-archives: http://compilers.iecc.com Xref: csiph.com comp.compilers:2052 On Tue, 10 Apr 2018 11:07:44 -0400 (EDT), "Walter Banks" wrote: [snip] >This can be especially true while developing optimization a surprising >number of new optimizations do not have the intended effect on old >functioning programs. I am a compiler non-expert. Could you give some non-trivial examples (or point to some), please? Sincerely, Gene Wirchenko