On Thu, 2009-09-10 at 16:54 -0700, David Daney wrote: > Starting with version 4.5, GCC has a new built-in function called > __builtin_unreachable(). The function tells the compiler that control > flow will never reach that point. Currently we trick the compiler by > putting in for(;;); but this has the disadvantage that extra code is > emitted for an endless loop. For an i386 kernel using > __builtin_unreachable() results in an allyesconfig that is nearly 4000 > bytes smaller.
For the powerpc part: Acked-by: Benjamin Herrenschmidt <b...@kernel.crashing.org> _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
