The direct x86 backend (in fact we have two, one is direct ASR->x86, but it only supports a few things so far; the other one is ASR->WASM->x86, which is a lot m

The direct x86 backend (in fact we have two, one is direct ASR->x86, but it only supports a few things so far; the other one is ASR->WASM->x86, which is a lot more complete and even supports 64bits) seems comparable to LLVM without any optimizations. The main added value of LLVM are all the low level optimizations that it can do. Also our LLVM backend is the most complete, it's our main backend. We will eventually catch up with the other backends. I think we only require C++11, I don't think we use anything newer than that. If we do, it wouldn't be difficult to change. I think we use `std::filesystem`, which is C++17, but if that is a problem, we could add some emulation of this for C++11.