From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fac41,b87849933931bc93 X-Google-Attributes: gidfac41,public X-Google-Thread: 1108a1,b87849933931bc93 X-Google-Attributes: gid1108a1,public X-Google-Thread: f43e6,b87849933931bc93 X-Google-Attributes: gidf43e6,public X-Google-Thread: 103376,b87849933931bc93 X-Google-Attributes: gid103376,public From: jvl@ocsystems.com (Joel VanLaven) Subject: Re: Assembler most efficient??? (was Re: What is wrong with OO ?) Date: 1997/01/12 Message-ID: <1997Jan12.212659.25142@ocsystems.com>#1/1 X-Deja-AN: 209412206 references: <5a0niaINNlda@topdog.cs.umbc.edu> <32C43AC8.24E2@sn.no> <32C557F6.532C@rase.com> <5aa0eo$thd@krusty.irvine.com> <5aadbr$ad8@masters0.InterNex.Net> <32D64433.41C6@wi.leidenuniv.nl> <32D6C18B.30A8@calfp.com> <1997Jan11.153628.1@eisner> organization: OC Systems, Inc. followup-to: comp.lang.eiffel,comp.lang.ada,comp.object,comp.software-eng newsgroups: comp.lang.eiffel,comp.lang.ada,comp.object,comp.software-eng Date: 1997-01-12T00:00:00+00:00 List-Id: Just to add my little bit of trivia, I read once about the CRISP architecture designed by ATT (I think) that stood for the C Rational Instruction Set Processor, that was designed almost solely to be better for programs written in C. I think they decided that optimizing the stack was very important for the C programs they were working with and so designed a special "stack cache." Actually, much of UNIX is written in C anyway, so optimizing for the compiler IS optimizing for the OS, at least indirectly. Larry Kilgallen (kilgallen@eisner.decus.org) wrote: : In article , dewar@merv.cs.nyu.edu (Robert Dewar) writes: : > Do you really have evidence of this? What machines are you talking about? : > I know quite a bit about the design of the common processor chips around, : > and I really cannot think of one case where the scenario you present above : > rings true. On the contrary, for example, the design of the MIPS chip was : > done with input from compiler considerations all along the way. In some : > sense the whole business of pipelined RISC architecture is intimately : > wound up with compiler considerations. : Compared to the operating system groups, the DEC compiler groups had : as much if not more input to the designers of the Alpha chips. : Larry Kilgallen -- -- Joel VanLaven