On Fri, Feb 28, 2014 at 7:06 AM, H. Peter Anvin <h...@zytor.com> wrote: > How many internal function calls are there? It seems we should try to avoid > those as much as possible by suitable inlining.
There are no non-static calls at all, except for __x86.get_pc_thunk. I imagine that gcc is smart enough to improve the calling convention to non-externally-visible functions. Amazingly (to me, anyway), the performance of the 32-bit version seems to be within 1 ns or so of the 64-bit version on SNB. I suspect that Intel has optimized the crap out of these things. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
