From: Tobias Schwinger (tschwinger_at_[hidden])
Date: 2006-05-16 08:32:31
Joel de Guzman wrote:
>
> I hope g++ will catch up! See Dan's post regarding some Fusion
> speed tests. g++ produces the fattest and slowest code :(
> I wish I was using incorrect flags or I haven't found the
> best compiler switches to use for g++.
Don't know if it helps, but GCC has some optimization hints:
// no side effects, may work on memory passed in through pointers
// and may read globals
int __attribute__((__pure__)) func(int);
// no side effects, may neither access memory passed in through
// pointers nor globals
int __attribute__((__const__)) func(int);
// always inline
int __attribute__((__always_inline__)) func(int);
Regards,
Tobias