On Jan 16, 2009, at 7:45 PM, Terence Parr wrote: > Wow...56% is parsing/lexing. yeah, that's why the llvm/clang folks spent so much time on their c/c+ + frontend. the compiler itself is plenty fast, but preprocessed code is huge. actually gcc isn't the benchmark any more, for certain things clang is much much faster. cheers, -k