On Mon, 18 Feb 2008 13:11:06 -0500 [EMAIL PROTECTED] wrote: > On Mon, 18 Feb 2008 14:27:10 GMT, David Howells said: > > > __builtin_expect() is useful on FRV where you _have_ to give each > > branch and conditional branch instruction a measure of probability > > whether the branch will be taken. > > What does gcc do the 99.998% of the time we don't have > likely/unlikely coded?
see Andi's email. It gets the exact same hints that 95%+ of the kernels unlikely/likely get you, because the heuristics in it are usually the same as the kernel programmers heuristics. -- If you want to reach me at my work email, use [EMAIL PROTECTED] For development, discussion and tips for power savings, visit http://www.lesswatts.org _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
