MonoAotLLVMToolChain in BenchmarkDotNet is apparently only used by this repo. dotnet/BenchmarkDotNet#2965 looked at adding integration tests for it, but it's not even an officially supported workload, so we can't reliably test it. Is it still used by this repo? If so, can it be implemented here rather than in BDN? I'd like to remove it from BDN either way.