> So I am wondering if llvm can produce hyperblock easily,can anyone
^^^^^^^^^^
Do you mean the one mentioned in the paper below?
http://www.eecs.umich.edu/~mahlke/papers/1992/mahlke_micro92.pdf
Regards,
chenwj
--
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667