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Path: ...!news.mixmin.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Lawrence D'Oliveiro <ldo@nz.invalid> Newsgroups: comp.arch Subject: Re: is Vax addressing sane today Date: Sat, 21 Sep 2024 23:29:01 -0000 (UTC) Organization: A noiseless patient Spider Lines: 8 Message-ID: <vcnkrt$1p6a3$2@dont-email.me> References: <vbd6b9$g147$1@dont-email.me> <09ce1622b872f0b0fa944e868a8c97be@www.novabbs.org> <vbnisc$2hb59$1@dont-email.me> <2024Sep10.094353@mips.complang.tuwien.ac.at> <vckf9d$178f2$1@dont-email.me> <O2DHO.184073$kxD8.113118@fx11.iad> <e290e18a59651f93e4b46f4839713b1c@www.novabbs.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Sun, 22 Sep 2024 01:29:02 +0200 (CEST) Injection-Info: dont-email.me; posting-host="f08cca55e0d941314925e901504a6690"; logging-data="1874243"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+pV0t1LD3djNxUD37MmZ9W" User-Agent: Pan/0.160 (Toresk; ) Cancel-Lock: sha1:WXot2mKKHGvF5KJ44n+4KDS4Oes= Bytes: 1576 On Sat, 21 Sep 2024 20:39:38 +0000, MitchAlsup1 wrote: > In the days before <good> branch prediction having a conditional branch > after each instruction that could have an execution problem was an > extremely poor choice. Thus, exceptions were invented (circa 1958). So all that does is push the conditional branch into the microcode. And make the instruction more complicated. Why should that be faster?