Extend -Wuninitialized to warn when accessing uninitialized base classes in a
constructor.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@222503 91177308-0d34-0410-b5e6-96231b3b80d8
PR21323: Fix iterator invalidation issue when looking for redeclarations of a
special member function.

No test yet: the only testcases we have for this issue are extremely complex.
Testcase will be added once I get a reasonable reduction.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@222506 91177308-0d34-0410-b5e6-96231b3b80d8
[modules] When explicitly importing a module, it's fine for the imported module
to be newer than we were expecting. That happens if .pcm's get moved between
file systems during a distributed build. (It's still not OK for them to actually
be different, though, so we still check the size and signature matches.)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@222507 91177308-0d34-0410-b5e6-96231b3b80d8
Fix missing diagnostic for unsupported TLS for some thread_local variables.

Clang r181627 moved a check for block-scope variables into this code for
handling thread storage class specifiers, but in the process, it broke the
logic for checking if the target supports TLS. Fix this with some simple
restructuring of the code. rdar://problem/18796883

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@222512 91177308-0d34-0410-b5e6-96231b3b80d8
MS ABI: Mangle char16_t and char32_t types

These mangling make clang more compatible with MSVC 2015.
Correctly mangling char16_t and char32_t will take a little more work.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@222515 91177308-0d34-0410-b5e6-96231b3b80d8
Merge branch 'master', remote-tracking branch 'trunk/master'