On Mon, Dec 10, 2012 at 03:50:00PM -0500, Thor Lancelot Simon wrote: > On Mon, Dec 10, 2012 at 02:28:28PM -0600, David Young wrote: > > On Mon, Dec 10, 2012 at 07:37:14PM +0000, David Laight wrote: > > > > > a) #define macros tend to get optimised better. > > > > Better even than an __attribute__((always_inline)) function? > > I'd like to submit that neither are a good thing, because human > beings are demonstrably quite bad at deciding when things should > be inlined, particularly in terms of the cache effects of excessive > inline use.
I agree with that. However, occasionally I have found when I'm optimizing the code based on actual evidence rather than hunches, and the compiler is letting me down, always_inline was necessary. Dave -- David Young dyo...@pobox.com Urbana, IL (217) 721-9981
