Interesting. Google uses gcc for all its C++ code internally, and I would say that it has way more gcc expertise internally than LLVM. I heard some figures once

Interesting. Google uses gcc for all its C++ code internally, and I would say that it has way more gcc expertise internally than LLVM. I heard some figures once that each extra percent of performance they get out of gcc is worth $1m dollars per product, for each of their 10 most important products. I think that's per year. (eg a 4% improvement in the speed of gcc-compiled code would save them $40m a year).