[AST] FunctionDecl::getBuiltinID() - Eliminate spurious calls to getASTContext
-- which is very much not free -- in the common case.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152165 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed