Hi all, Sorry to interrupt those not interested. I inserted an INC64m instruction in the program after register allocation in the backend. However, the program will get aborted or run in dead loop. I wonder whether this instruction will change register file so that my program get aborted? By the way, I wonder whether there are any methods that I can instrument the program after register allocation so that I can count the number of certain instruction dynamically? Thanks, Alex -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140917/664a4d58/attachment.html>