rs added a comment. Hi Renato, I've created 2 new reviews for this work http://reviews.llvm.org/D20394 which adds a test for the intrinsic in llvm and http://reviews.llvm.org/D20394 which fixes the builtin signature for the cdp intrinsic. Thanks, Ranjeet Repository: rL LLVM http://reviews.llvm.org/D20325