diff --git a/lib/ExecutionEngine/ExecutionEngine.cpp b/lib/ExecutionEngine/ExecutionEngine.cpp
index cc3cc38..02b94cc 100644
--- a/lib/ExecutionEngine/ExecutionEngine.cpp
+++ b/lib/ExecutionEngine/ExecutionEngine.cpp
@@ -39,12 +39,6 @@
   assert(P && "ModuleProvider is null?");
 }
 
-ExecutionEngine::ExecutionEngine(Module *M) : LazyFunctionCreator(0) {
-  LazyCompilationDisabled = false;
-  assert(M && "Module is null?");
-  Modules.push_back(new ExistingModuleProvider(M));
-}
-
 ExecutionEngine::~ExecutionEngine() {
   clearAllGlobalMappings();
   for (unsigned i = 0, e = Modules.size(); i != e; ++i)
diff --git a/lib/ExecutionEngine/Interpreter/Interpreter.cpp b/lib/ExecutionEngine/Interpreter/Interpreter.cpp
index 3a156bf..65ca012 100644
--- a/lib/ExecutionEngine/Interpreter/Interpreter.cpp
+++ b/lib/ExecutionEngine/Interpreter/Interpreter.cpp
@@ -33,26 +33,18 @@
 ///
 ExecutionEngine *Interpreter::create(ModuleProvider *MP, std::string* ErrStr) {
   // Tell this ModuleProvide to materialize and release the module
-  Module *M = MP->releaseModule(ErrStr);
-  if (!M)
+  if (!MP->materializeModule(ErrStr))
     // We got an error, just return 0
     return 0;
 
-  // This is a bit nasty, but the ExecutionEngine won't be able to delete the
-  // module due to use/def issues if we don't delete this MP here. Below we
-  // construct a new Interpreter with the Module we just got. This creates a
-  // new ExistingModuleProvider in the EE instance. Consequently, MP is left
-  // dangling and it contains references into the module which cause problems
-  // when the module is deleted via the ExistingModuleProvide via EE.
-  delete MP;
-  
-  return new Interpreter(M);
+  return new Interpreter(MP);
 }
 
 //===----------------------------------------------------------------------===//
 // Interpreter ctor - Initialize stuff
 //
-Interpreter::Interpreter(Module *M) : ExecutionEngine(M), TD(M) {
+Interpreter::Interpreter(ModuleProvider *M)
+  : ExecutionEngine(M), TD(M->getModule()) {
       
   memset(&ExitValue.Untyped, 0, sizeof(ExitValue.Untyped));
   setTargetData(&TD);
diff --git a/lib/ExecutionEngine/Interpreter/Interpreter.h b/lib/ExecutionEngine/Interpreter/Interpreter.h
index 9ad837c..3c5d4b1 100644
--- a/lib/ExecutionEngine/Interpreter/Interpreter.h
+++ b/lib/ExecutionEngine/Interpreter/Interpreter.h
@@ -94,7 +94,7 @@
   std::vector<Function*> AtExitHandlers;
 
 public:
-  explicit Interpreter(Module *M);
+  explicit Interpreter(ModuleProvider *M);
   ~Interpreter();
 
   /// runAtExitHandlers - Run any functions registered by the program's calls to
diff --git a/lib/ExecutionEngine/JIT/JIT.cpp b/lib/ExecutionEngine/JIT/JIT.cpp
index 5b04124..b599497 100644
--- a/lib/ExecutionEngine/JIT/JIT.cpp
+++ b/lib/ExecutionEngine/JIT/JIT.cpp
@@ -66,7 +66,7 @@
   setTargetData(TM.getTargetData());
 
   // Initialize MCE
-  MCE = createEmitter(*this);
+  MCE = createEmitter(*this, 0);
 
   // Add target data
   MutexGuard locked(lock);
diff --git a/lib/ExecutionEngine/JIT/JIT.h b/lib/ExecutionEngine/JIT/JIT.h
index 5a3d661..6453740 100644
--- a/lib/ExecutionEngine/JIT/JIT.h
+++ b/lib/ExecutionEngine/JIT/JIT.h
@@ -121,7 +121,7 @@
   /// getCodeEmitter - Return the code emitter this JIT is emitting into.
   MachineCodeEmitter *getCodeEmitter() const { return MCE; }
 private:
-  static MachineCodeEmitter *createEmitter(JIT &J);
+  static MachineCodeEmitter *createEmitter(JIT &J, JITMemoryManager *JMM);
   void runJITOnFunction (Function *F);
 };
 
diff --git a/lib/ExecutionEngine/JIT/JITEmitter.cpp b/lib/ExecutionEngine/JIT/JITEmitter.cpp
index d08bf0b..a1b4b00 100644
--- a/lib/ExecutionEngine/JIT/JITEmitter.cpp
+++ b/lib/ExecutionEngine/JIT/JITEmitter.cpp
@@ -312,8 +312,8 @@
     /// Resolver - This contains info about the currently resolved functions.
     JITResolver Resolver;
   public:
-    JITEmitter(JIT &jit) : Resolver(jit) {
-      MemMgr = JITMemoryManager::CreateDefaultMemManager();
+    JITEmitter(JIT &jit, JITMemoryManager *JMM) : Resolver(jit) {
+      MemMgr = JMM ? JMM : JITMemoryManager::CreateDefaultMemManager();
       if (jit.getJITInfo().needsGOT()) {
         MemMgr->AllocateGOT();
         DOUT << "JIT is managing a GOT\n";
@@ -637,8 +637,8 @@
 //  Public interface to this file
 //===----------------------------------------------------------------------===//
 
-MachineCodeEmitter *JIT::createEmitter(JIT &jit) {
-  return new JITEmitter(jit);
+MachineCodeEmitter *JIT::createEmitter(JIT &jit, JITMemoryManager *JMM) {
+  return new JITEmitter(jit, JMM);
 }
 
 // getPointerToNamedFunction - This function is used as a global wrapper to