question about llvm C++ standard?

Hello :
Thnks for watch my question,

LLVM does not define it's own C++ standard. You are asking for the
coding style, I guess? Or you're really asking about the C++ standard?
You have to pay for current C++ standard if I remember correctly. Or
you can find the working draft copy which is close to the standard one.

  http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1905.pdf

This kind of question is more related to clang (a compiler frontend
for LLVM). Clang has it's own ML.

  http://clang.llvm.org/

HTH,
chenwj