[LKH] Add a new IRCompileLayer.

llvm-svn: 333127
diff --git a/llvm/lib/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.cpp b/llvm/lib/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.cpp
index c635ab0..3e5336ca 100644
--- a/llvm/lib/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.cpp
@@ -22,7 +22,7 @@
 void RTDyldObjectLinkingLayer2::emit(MaterializationResponsibility R,
                                      VModuleKey K,
                                      std::unique_ptr<MemoryBuffer> O) {
-  assert(O && "Object has already been materialized");
+  assert(O && "Object must not be null");
 
   auto &ES = getExecutionSession();