Made lldb_private::ArchSpec contain much more than just an architecture. It
now, in addition to cpu type/subtype and architecture flavor, contains:
- byte order (big endian, little endian)
- address size in bytes
- llvm::Triple for true target triple support and for more powerful plug-in
  selection.




git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@125602 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Symbol/UnwindTable.cpp b/source/Symbol/UnwindTable.cpp
index 697098d..4b30980 100644
--- a/source/Symbol/UnwindTable.cpp
+++ b/source/Symbol/UnwindTable.cpp
@@ -58,12 +58,11 @@
     }
     
     ArchSpec arch;
-    ConstString str;
-    m_object_file.GetTargetTriple (str);
-    arch.SetArchFromTargetTriple (str.GetCString());
-    m_assembly_profiler = UnwindAssemblyProfiler::FindPlugin (arch);
-
-    m_initialized = true;
+    if (m_object_file.GetArchitecture (arch))
+    {
+        m_assembly_profiler = UnwindAssemblyProfiler::FindPlugin (arch);
+        m_initialized = true;
+    }
 }
 
 UnwindTable::~UnwindTable ()