On Sad, 2003-04-19 at 05:48, Jeff Garzik wrote:
> > Completely disagree. Write the most straightforward code possible,
> > and then if there proves to be a problem, optimize. Optimizations
> > where there's no actual performance problem should be left to the
> > compiler.
>
> Since the kernel does its own string ops, the compiler does not have
> enough information to deduce that further optimization is possible.
>
>
> > Case in point: gcc-3.2 on -O2 on Intel is one instruction longer for
> > your version.
>
> And? It's still slower.
You are arguing over a 1 instruction, probably sub 1 clock scheduling
matter on a call which is not used on any fast or common path. If you
shaved 1 clock off the timer handling instead you'd make a lot more
difference..
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This archive was generated by hypermail 2b29 : Wed Apr 23 2003 - 22:00:25 EST