MCAD seems to be slow

[svkeerthy]

Hi,

I was able to get the tool working by using the broker-improvements branch and dev-incremental-mca of custom LLVM. Using MCAD with QEMU to analyze trivial programs like Bellman-Ford takes about a minute whereas the actual runtime is <1s. Qemu process ends within few seconds and then MCAD takes a while to complete the analysis.

Can you please let me know if this is expected or am I going wrong somewhere?

Here are the commands I am running -

./llvm-mcad -mtriple="x86_64-unknown-linux-gnu" -mcpu="skylake" --load-broker-plugin=$PWD/plugins/qemu-broker/libMCADQemuBroker.so -broker-plugin-arg-host="localhost:9487"

./qemu-x86_64 -plugin /home/vk/LLVM-MCA-Daemon/build_llvm/plugins/qemu-broker/Qemu/libQemuRelay.so,arg="-addr=127.0.0.1",arg="-port=9487" -d plugin ~/a.out

I tried compiling the binary with both g++ (11.4.0) and clang++ (17.0.6).