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...f a block A is more expensive than a block B. Do you think that even with the overhead I would be able to get the A > B information? Like: overhead + time(A) > overhead + time(B) => A > B. If so, I'm not too much concerned about the accuracy. Not sure if I was clear, Thanks again Vanderson M. Rosario 2014-09-17 17:26 GMT-03:00 Jonathan Roelofs <jonathan at codesourcery.com>: > I think if you do this, you're quickly going to realize that there's quite > a lot of overhead in getting the time stamps needed to record basic block > duration, so you're not goin...

...asic block of a program? I tried to use some profiling tools like gcov and perf, but as far as I know they can only give me the frequency that each basic block is executed. I was thinking about writing a pass to add PAPI instructions in each LLVM basic block. Do you think is a good idea? Thanks Vanderson M. Rosario -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140917/b704227d/attachment.html>