> I believe opt takes the bytecode file (.bc) not the human readable form, but > i am just a learner... `opt` can eat *.ll file. You can give it a try. :) 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 Homepage: http://people.cs.nctu.edu.tw/~chenwj