On the effect of branch mispredictions in the Squeak VM
Bert Freudenberg
bert at isg.cs.uni-magdeburg.de
Mon Jul 7 13:26:06 UTC 2003
Am Montag, 07.07.03 um 14:59 Uhr schrieb Andreas Raab:
>> The PowerPC 750 (G3) was designed with
>> this kind of table-driven dispatch code in mind, since that was the
>> basis for the 68K emulator which Apple used. The pipeline is only 5
>> stages, so branch misprediction penalties are quite small compared to
>> the 20 cycles of the P4.
>
> Very interesting - do you have a URL handy for this? I'd like to read
> up on
> it.
I'm, not sure about the G3, but this was quite interesting:
http://arstechnica.com/cpu/01q2/p4andg4e/p4andg4e-1.html
-- Bert
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