Index: llvm/trunk/unittests/ExecutionEngine/MCJIT/MCJITTestAPICommon.h
===================================================================
--- llvm/trunk/unittests/ExecutionEngine/MCJIT/MCJITTestAPICommon.h
+++ llvm/trunk/unittests/ExecutionEngine/MCJIT/MCJITTestAPICommon.h
@@ -21,13 +21,14 @@
 #include "llvm/InitializePasses.h"
 #include "llvm/Support/Host.h"
 #include "llvm/Support/TargetSelect.h"
+#include "llvm/Support/TargetRegistry.h"
 
 // Used to skip tests on unsupported architectures and operating systems.
 // To skip a test, add this macro at the top of a test-case in a suite that
 // inherits from MCJITTestBase. See MCJITTest.cpp for examples.
 #define SKIP_UNSUPPORTED_PLATFORM \
   do \
-    if (!ArchSupportsMCJIT() || !OSSupportsMCJIT()) \
+    if (!ArchSupportsMCJIT() || !OSSupportsMCJIT() || !HostCanBeTargeted()) \
       return; \
   while(0)
 
@@ -52,6 +53,11 @@
     HostTriple = Triple::normalize(HostTriple);
   }
 
+  bool HostCanBeTargeted() {
+    std::string Error;
+    return TargetRegistry::lookupTarget(HostTriple, Error) != nullptr;
+  }
+
   /// Returns true if the host architecture is known to support MCJIT
   bool ArchSupportsMCJIT() {
     Triple Host(HostTriple);