really? LLVM based toolchains compile hairy native code faster than any other tools i've seen... GCC, MS, Intel compilers for C/C++ are all very slow by compar

really? LLVM based toolchains compile hairy native code faster than any other tools i've seen... GCC, MS, Intel compilers for C/C++ are all very slow by comparison and the benefits are marginal (but still valuable). for JIT or dynamic stuff LLVM is a poor fit. it doesn't surprise me that JS VMs do better with JS than LLVM, because there is no actual compilation involved as such - its a completely different class of problem, and its just not designed for that kind of language and environment, which is highly derivative, dynamically late binding and built in many layers, the vast majority of which are themselves compiled with C/C++ toolchains like Clang/LLVM, GCC or the MS compiler from necessity... quoting that first article you link: "it isn’t specifically designed for the optimization challenges of dynamic languages like JavaScript."