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- Newsgroups: comp.os.linux
- Path: sparky!uunet!mcsun!sun4nl!dutrun!donau!zen.et.tudelft.nl!wolff
- From: wolff@zen.et.tudelft.nl (Rogier Wolff)
- Subject: Re: Jumptable Performance (Was: Re: shared libs - can everyone be happy with this?)
- Message-ID: <1992Aug21.081823.571@donau.et.tudelft.nl>
- Sender: news@donau.et.tudelft.nl (UseNet News System)
- Nntp-Posting-Host: zen.et.tudelft.nl
- Organization: Delft University of Technology, Dept. of Electrical Engineering
- References: <1992Aug17.144719.1961@crd.ge.com> <1992Aug17.151311.29507@ods.com> <NOP.92Aug17135014@theory.Mankato.MSUS.EDU> <1992Aug18.080437.3944@fys.ruu.nl> <1992Aug18.140858.3484@crd.ge.com> <1992Aug18.154149.26416@fys.ruu.nl> <1992Aug19.125541.865@crd.ge.com>
- Date: Fri, 21 Aug 1992 08:18:23 GMT
- Lines: 20
-
- davidsen@ariel.crd.GE.COM (william E Davidsen) writes:
-
- > If more instructions and bigger size really improved performance we'd
- >all leave -O off our compiles, right. Therefore it's an interesting
- >little puzzle.
- >--
- >bill davidsen, GE Corp. R&D Center; Box 8; Schenectady NY 12345
- > I admit that when I was in school I wrote COBOL. But I didn't compile.
-
- That's what optimizing is all about: The only difference between GCC codee
- for 486 and 386 is that in the 486 code some extra NOPs are added.
-
- This will make the branch targets align on 16 byte boundaries, which will
- improve cache performance.
-
- Roger
- --
- If the opposite of "pro" is "con", what is the opposite of "progress"?
- (stolen from kadokev@iitvax.iit.edu, who got it from brydon@asl.sinet.slb.com)
- EMail: wolff@duteca.et.tudelft.nl ** Tel +31-15-783644 or +31-15-142371
-