This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: Faster compilation speed


David S. Miller wrote:
>       You can easily use much less than a full word.  Foundation on 
>    OpenStep/Mach 4.2 started storing partial ref counts in whatever spare 
>    bits were available in each object.
> 
> We don't have any spare bits, we have 32 bits used for RTX state then
> the next object is a pointer.  So whatever size counter we use will
> eat at a minimum a word's worth of space to get the pointers aligned
> up properly.

Did I see "pointers" and "aligned" there?

You have 2 spare bits per pointer, man, open your eyes! :-)

-- Jamie


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]