On Wed, Feb 26, 2014 at 12:26:43PM -0800, Andy Lutomirski wrote: > Speed. FPO saves one register (a big deal on x86_32; not so important > on x86_64) but also saves a few cycles on function entry and exit, > which is a bigger deal for small functions.
So I though that LTO was supposed to get rid of a lot of the small function and inline them. I've also heard that in practise this is very 'hard', and thus we're still stuck with a gazillion small functions (mostly C++ people suffer from this). Can anybody give a concise explanation on why LTO doesn't rid us of these small functions or point to a web resource that describes the problem? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
