Add a convenience method for creating EE's.

llvm-svn: 43206
diff --git a/llvm/lib/ExecutionEngine/ExecutionEngine.cpp b/llvm/lib/ExecutionEngine/ExecutionEngine.cpp
index 512c452..192caa8 100644
--- a/llvm/lib/ExecutionEngine/ExecutionEngine.cpp
+++ b/llvm/lib/ExecutionEngine/ExecutionEngine.cpp
@@ -328,6 +328,10 @@
   return EE;
 }
 
+ExecutionEngine *ExecutionEngine::create(Module *M) {
+  return create(new ExistingModuleProvider(M));
+}
+
 /// getPointerToGlobal - This returns the address of the specified global
 /// value.  This may involve code generation if it's a function.
 ///