Re: [avr-gcc-list] Optimisation of bit set/clear in uint32_t

[Georg-Johann Lay]

Dale Whitfield schrieb:
> Hi,
>
> All this talk of super-optimisers, etc. brings this issue I've had,
> to the fore again.
>
> Perhaps there are suggestions on how to encourage the compiler to do the
> optimisations rather than having to hand-code to get the best result.

There is some work which addresses that issue:
   http://gcc.gnu.org/ml/gcc-patches/2008-12/msg00905.html
   http://lists.gnu.org/archive/html/avr-gcc-list/2008-12/msg00009.html

Georg-Johann