Re: [PATCH] "volatile considered harmful" document

[Bill Davidsen]

Krzysztof Halasa wrote:
> Robert Hancock <hancockr@xxxxxxx> writes:
>
>   
> > You don't need volatile in that case, rmb() can be used.
> >     
>
> rmb() invalidates all compiler assumptions, it can be much slower.
>   
Yes, why would you use rmb() when a read of a volatile generates optimal 
code?

--
bill davidsen <davidsen@xxxxxxx>
 CTO TMR Associates, Inc
 Doing interesting things with small computers since 1979

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