Re: [avr-libc-dev] Inline assembler and compiler optimization

[Joerg Wunsch]

As Weddington, Eric wrote:

> > Anyway, it might make sense to provide an additional macro like
> > __memory_barrier() that expands to __asm__
> > __volatile__(""::"memory").

> If we do that, we might as well make it a public symbol, yes?:
> #define memory_barrier()  __asm__ __volatile__(""::"memory")

If we document it, it /is/ public. ;-)

The point is that user programs might already use the identifier
memory_barrier so we'd better avoid redefining it (at least, as long
as it goes into one of the existing header files).

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)