Comment by ncruces

You have a grammar file in a formal language, and want to generate a faster parser in another formal language.

What's wrong with the source language that it's better to use a sufficiently smart random code generator for the target language, and then fuzz the hell out of the output of it until it behaves the same as the slow translated code, than to create a sufficiently smart compiler from the source to target languages?

I mean this sounds like if we replaced GCC with a really smart random assembly generator and a fuzzer for the output.