Index: lldb/trunk/include/lldb/Core/Logging.h
===================================================================
--- lldb/trunk/include/lldb/Core/Logging.h
+++ lldb/trunk/include/lldb/Core/Logging.h
@@ -47,6 +47,7 @@
 #define LIBLLDB_LOG_PLATFORM            (1u << 25)
 #define LIBLLDB_LOG_SYSTEM_RUNTIME      (1u << 26)
 #define LIBLLDB_LOG_JIT_LOADER          (1u << 27)
+#define LIBLLDB_LOG_LANGUAGE            (1u << 28)
 #define LIBLLDB_LOG_ALL                 (UINT32_MAX)
 #define LIBLLDB_LOG_DEFAULT             (LIBLLDB_LOG_PROCESS              |\
                                          LIBLLDB_LOG_THREAD               |\
Index: lldb/trunk/source/Core/Logging.cpp
===================================================================
--- lldb/trunk/source/Core/Logging.cpp
+++ lldb/trunk/source/Core/Logging.cpp
@@ -147,6 +147,7 @@
                 else if (0 == ::strncasecmp(arg, "mmap", 4))    flag_bits &= ~LIBLLDB_LOG_MMAP;
                 else if (0 == ::strcasecmp(arg, "os"))          flag_bits &= ~LIBLLDB_LOG_OS;
                 else if (0 == ::strcasecmp(arg, "jit"))         flag_bits &= ~LIBLLDB_LOG_JIT_LOADER;
+                else if (0 == ::strcasecmp(arg, "language"))    flag_bits &= ~LIBLLDB_LOG_LANGUAGE;
                 else
                 {
                     feedback_strm->Printf ("error:  unrecognized log category '%s'\n", arg);
@@ -222,6 +223,7 @@
             else if (0 == ::strcasecmp(arg, "verbose"))     flag_bits |= LIBLLDB_LOG_VERBOSE;
             else if (0 == ::strncasecmp(arg, "watch", 5))   flag_bits |= LIBLLDB_LOG_WATCHPOINTS;
             else if (0 == ::strcasecmp(arg, "jit"))         flag_bits |= LIBLLDB_LOG_JIT_LOADER;
+            else if (0 == ::strcasecmp(arg, "language"))    flag_bits |= LIBLLDB_LOG_LANGUAGE;
             else
             {
                 feedback_strm->Printf("error: unrecognized log category '%s'\n", arg);
@@ -254,6 +256,7 @@
                  "  expr - log expressions\n"
                  "  host - log host activities\n"
                  "  jit - log JIT events in the target\n"
+                 "  language - log language runtime events\n"
                  "  mmap - log mmap related activities\n"
                  "  module - log module activities such as when modules are created, destroyed, replaced, and more\n"
                  "  object - log object construction/destruction for important objects\n"