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...was the problem you were hitting? I don't have isolated example code, but it really shouldn't take much code to set up the event listener. All that PG (which is what I added the perf listener for) is doing is: https://github.com/postgres/postgres/blob/master/src/backend/jit/llvm/llvmjit.c#L676 When taking a profile of a program you need to specify -k 1 to perf, to have compatible clocks. E.g. you need to take it like $ perf record -k 1 --call-graph dwarf -o /tmp/perf.data -p 22950 and then you need to inject the JIT information into the profile: $ perf inject -v --jit -i /tmp/perf.data...

Hi All, Just a couple of updates this week: First: there is a preview patch up at https://reviews.llvm.org/D75838 to enable use of JITEventListeners in RTDyldObjectLinkingLayer. I've only done very preliminary testing on it, but was able to debug simple JIT'd programs on Linux using the GDB registration listener. If you've been wanting to move to ORC but held up by lack of debugger /