[llvm-dev] Obtain the execution time of one specified library function, such as CUDA library function.
David Blaikie via llvm-dev
llvm-dev at lists.llvm.org
Fri Jul 7 08:36:07 PDT 2017
Sounds like this:
be relevant to your interests. Though I'm not sure there's a supported way
to /only/ collect a profile for a single function.
On Thu, Jul 6, 2017 at 8:20 PM 李阳 via llvm-dev <llvm-dev at lists.llvm.org>
> Hi LLVM-ers,
> I want to obtain the execution time of one specified library function,
> such as CUDA library function.
> My thoughts is: 1) use clang to compile the library function to IR;
> 2) instrument the IR, here is my unknown. I have
> no idea about how to instrument the instruction relative to execution time.
> Or is this approach feasible? If there is function supporting timestamp, I
> want to insert the start-time timestamp to the begin of the library
> function, and insert the stop-time timestamp to the end of the library
> function, then compute the interval between two timestamp.
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
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