Comments for r189494

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189504 91177308-0d34-0410-b5e6-96231b3b80d8
[doxygen] Added code for generating doxygen documentation for clang for cmake.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189508 91177308-0d34-0410-b5e6-96231b3b80d8
[doxygen] Added support for doxygen external search.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189509 91177308-0d34-0410-b5e6-96231b3b80d8
Improve error for assignment to incomplete class.

PR7681.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189510 91177308-0d34-0410-b5e6-96231b3b80d8
Handle -D arguments ending in a backslash.

We translate these into #define directives; to preserve gcc-compatible
semantics (where the expanded macro includes the backslash), we add
an extra "\\\n" to the end of the synthesized "#define".

<rdar://problem/14810220>

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189511 91177308-0d34-0410-b5e6-96231b3b80d8
For methods where clang automatically infers instancetype from the selector 
(e.g., all -init* methods), no need to suggest "instancetype" because it 
is redundant.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189514 91177308-0d34-0410-b5e6-96231b3b80d8
Fix "//" comments with -traditional-cpp in C++.

Apparently, gcc's -traditional-cpp behaves slightly differently in C++ mode;
specifically, it discards "//" comments.  Match gcc's behavior.

<rdar://problem/14808126>

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189515 91177308-0d34-0410-b5e6-96231b3b80d8