http://www.thoughtstuff.com/rme/weblog/?p=16 Matters of minor import Sat, 20 Sep 2008 03:46:26 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://www.thoughtstuff.com/rme/weblog/?p=16&cpage=1#comment-24567 wolf550e Sat, 20 Sep 2008 03:46:26 +0000 http://www.thoughtstuff.com/rme/weblog/?p=16#comment-24567 Very interesting. Win32 uses FS for thread local storage. Did you take the idea from there? What about doing what GCC does when you specify -fomit-frame-pointer? That should give you a register. Or if you can't use if, please write another post about it. Re: presumably cheaper instruction pair. Benchmark! Some legacy x86 instructions are quite slow on modern cpus (core2). The Intel docs are good, but I'd benchmark and possibly even see what the Intel compilers generate to find out what's best practice for today's chips. Very interesting.
Win32 uses FS for thread local storage. Did you take the idea from there?
What about doing what GCC does when you specify -fomit-frame-pointer? That should give you a register. Or if you can’t use if, please write another post about it.
Re: presumably cheaper instruction pair. Benchmark! Some legacy x86 instructions are quite slow on modern cpus (core2). The Intel docs are good, but I’d benchmark and possibly even see what the Intel compilers generate to find out what’s best practice for today’s chips.

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