Only add DW_AT_prototyped if we're working with a C-like language.
Worth another 45k (1%) off of a large C++ testcase.

rdar://10909458

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151144 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed