Hi, You can refer to this GSOC proposal. GSoC: PTX Back-End for LLVM http://groups.google.com/group/llvm-dev/msg/a64b2bd9700ac41f Regards, chenwj -- Wei-Ren Chen (陳韋任) Computer System Lab, Institute of Information Science, Academia Sinica, Taiwan (R.O.C.) Tel:886-2-2788-3799 #1667