[Vm-dev] Re: PrefetchAW
Nicolas Cellier
nicolas.cellier.aka.nice at gmail.com
Fri Apr 29 19:55:58 UTC 2016
2016-04-29 21:30 GMT+02:00 Nicolas Cellier <
nicolas.cellier.aka.nice at gmail.com>:
> Hi Eliot,
> I'm not sure I understand assembler at all, but:
> - byte order sounds strange in X64 concretizePrefetchAw >> (0, 16, 8 , 24)
> - why is machineCodeSize 7 in X64 but maxSize in IA32?
>
I think I get the answer for 2nd bullet:
This is because maxSize is set in computeMaximumSize to either 7 or 0:
[PrefetchAw] -> [^self hasSSEInstructions ifTrue: [7] ifFalse:
[0]].
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