MFC r258054: Update LLDB to upstream r194122 snapshot

  Inludes minor changes relative to upstream, for compatibility with
  FreeBSD's in-tree LLVM 3.3:

  - Reverted LLDB r191806, restoring use of previous API.
  - Reverted part of LLDB r189317, restoring previous enum names.
  - Work around missing LLVM r192504, using previous registerEHFrames API
    (limited functionality).
  - Removed PlatformWindows header include and init/terminate calls.

Sponsored by:	DARPA, AFRL

1 files changed, 10 insertions, 2 deletions

diff --git a/contrib/llvm/tools/lldb/source/Utility/SharingPtr.cpp b/contrib/llvm/tools/lldb/source/Utility/SharingPtr.cpp
index f64d7e3..be237ce 100644
--- a/contrib/llvm/tools/lldb/source/Utility/SharingPtr.cpp
+++ b/contrib/llvm/tools/lldb/source/Utility/SharingPtr.cpp
@@ -138,13 +138,21 @@ namespace imp
     void
     shared_count::add_shared()
     {
-        increment(shared_owners_);
+#ifdef _MSC_VER
+        _InterlockedIncrement(&shared_owners_);
+#else
+        ++shared_owners_;
+#endif
     }
 
     void
     shared_count::release_shared()
     {
-        if (decrement(shared_owners_) == -1)
+#ifdef _MSC_VER
+        if (_InterlockedDecrement(&shared_owners_) == -1)
+#else
+        if (--shared_owners_ == -1)
+#endif
         {
             on_zero_shared();
             delete this;