Update LLDB snapshot to upstream r202189

Highlights include (upstream revs in parens):

- Improvements to the remote GDB protocol client
  (r196610, r197579, r197857, r200072, and others)

- Bug fixes for big-endian targets
  (r196808)

- Initial support for libdispatch (GCD) queues in the debuggee
  (r197190)

- Add "step-avoid-libraries" setting
  (r199943)

- IO subsystem improvements (including initial work on a curses gui)
  (r200263)

- Support hardware watchpoints on FreeBSD
  (r201706)

- Improved unwinding through hand-written assembly functions
  (r201839)

- Handle DW_TAG_unspecified_parameters for variadic functions
  (r202061)

- Fix Ctrl+C interrupting a running inferior process
  (r202086, r202154)

- Various bug fixes for memory leaks, LLDB segfaults, the C++ demangler,
  ELF core files, DWARF debug info, and others.

Sponsored by:	DARPA, AFRL

1 files changed, 120 insertions, 0 deletions

diff --git a/contrib/llvm/tools/lldb/source/API/SBQueueItem.cpp b/contrib/llvm/tools/lldb/source/API/SBQueueItem.cpp
new file mode 100644
index 0000000..481d51e
--- /dev/null
+++ b/contrib/llvm/tools/lldb/source/API/SBQueueItem.cpp
@@ -0,0 +1,120 @@
+//===-- SBQueueItem.cpp -----------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/lldb-python.h"
+#include "lldb/lldb-forward.h"
+
+#include "lldb/API/SBAddress.h"
+#include "lldb/API/SBQueueItem.h"
+#include "lldb/API/SBThread.h"
+#include "lldb/Core/Address.h"
+#include "lldb/Target/QueueItem.h"
+#include "lldb/Target/Thread.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+//----------------------------------------------------------------------
+// Constructors
+//----------------------------------------------------------------------
+SBQueueItem::SBQueueItem () :
+    m_queue_item_sp()
+{
+}
+
+SBQueueItem::SBQueueItem (const QueueItemSP& queue_item_sp) :
+    m_queue_item_sp (queue_item_sp)
+{
+}
+
+//----------------------------------------------------------------------
+// Destructor
+//----------------------------------------------------------------------
+SBQueueItem::~SBQueueItem()
+{
+    m_queue_item_sp.reset();
+}
+
+bool
+SBQueueItem::IsValid() const
+{
+    return m_queue_item_sp.get() != NULL;
+}
+
+
+void
+SBQueueItem::Clear ()
+{
+    m_queue_item_sp.reset();
+}
+
+
+void
+SBQueueItem::SetQueueItem (const QueueItemSP& queue_item_sp)
+{
+    m_queue_item_sp = queue_item_sp;
+}
+
+
+lldb::QueueItemKind
+SBQueueItem::GetKind () const
+{
+    QueueItemKind result = eQueueItemKindUnknown;
+    if (m_queue_item_sp)
+    {
+        result = m_queue_item_sp->GetKind ();
+    }
+    return result;
+}
+
+void
+SBQueueItem::SetKind (lldb::QueueItemKind kind)
+{
+    if (m_queue_item_sp)
+    {
+        m_queue_item_sp->SetKind (kind);
+    }
+}
+
+SBAddress
+SBQueueItem::GetAddress () const
+{
+    SBAddress result;
+    if (m_queue_item_sp)
+    {
+        result.SetAddress (&m_queue_item_sp->GetAddress());
+    }
+    return result;
+}
+
+void
+SBQueueItem::SetAddress (SBAddress addr)
+{
+    if (m_queue_item_sp)
+    {
+        m_queue_item_sp->SetAddress (addr.ref());
+    }
+}
+
+SBThread
+SBQueueItem::GetExtendedBacktraceThread (const char *type)
+{
+    SBThread result;
+    if (m_queue_item_sp)
+    {
+        ThreadSP thread_sp;
+        ConstString type_const (type);
+        thread_sp = m_queue_item_sp->GetExtendedBacktraceThread (type_const);
+        if (thread_sp)
+        {
+            result.SetThread (thread_sp);
+        }
+    }
+    return result;
+}