Optimizing code via compiler flags
Emscripten is an LLVM-to-JavaScript compiler. It takes LLVM bitcode (which can be generated from C/C++, using llvm-gcc or clang, or any other language that can be converted into LLVM) and compiles that into JavaScript, which can be run on the web (or anywhere else JavaScript can run).
cross compiler toolchain
Psyco is a Python extension module which can massively speed up the execution of any Python code.
This series of articles is a tutorial on the theory and practice of developing language parsers and compilers. Before we are finished, we will have covered every aspect of compiler construction, designed a new programming language, and built a working compiler.
