Eliminate the dependency of ExecutionEngine on the JIT/Interpreter libraries.

Now you can build a tool with just the JIT or just the interpreter.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26946 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/Interpreter/Interpreter.cpp b/lib/ExecutionEngine/Interpreter/Interpreter.cpp
index af23bf1..0f73189 100644
--- a/lib/ExecutionEngine/Interpreter/Interpreter.cpp
+++ b/lib/ExecutionEngine/Interpreter/Interpreter.cpp
@@ -17,11 +17,24 @@
 #include "llvm/CodeGen/IntrinsicLowering.h"
 #include "llvm/DerivedTypes.h"
 #include "llvm/Module.h"
+#include "llvm/ModuleProvider.h"
 using namespace llvm;
 
+static struct RegisterInterp {
+  RegisterInterp() { Interpreter::Register(); }
+} InterpRegistrator;
+
 /// create - Create a new interpreter object.  This can never fail.
 ///
-ExecutionEngine *Interpreter::create(Module *M, IntrinsicLowering *IL) {
+ExecutionEngine *Interpreter::create(ModuleProvider *MP,
+                                     IntrinsicLowering *IL) {
+  Module *M;
+  try {
+    M = MP->materializeModule();
+  } catch (...) {
+    return 0;  // error materializing the module.
+  }
+  
   bool isLittleEndian = false;
   switch (M->getEndianness()) {
   case Module::LittleEndian: isLittleEndian = true; break;
diff --git a/lib/ExecutionEngine/Interpreter/Interpreter.h b/lib/ExecutionEngine/Interpreter/Interpreter.h
index e45b4c6..1b547a6 100644
--- a/lib/ExecutionEngine/Interpreter/Interpreter.h
+++ b/lib/ExecutionEngine/Interpreter/Interpreter.h
@@ -102,11 +102,15 @@
   ///
   void runAtExitHandlers();
 
+  static void Register() {
+    InterpCtor = create;
+  }
+  
   /// create - Create an interpreter ExecutionEngine. This can never fail.  The
   /// specified IntrinsicLowering implementation will be deleted when the
   /// Interpreter execution engine is destroyed.
   ///
-  static ExecutionEngine *create(Module *M, IntrinsicLowering *IL);
+  static ExecutionEngine *create(ModuleProvider *M, IntrinsicLowering *IL);
 
   /// run - Start execution with the specified function and arguments.
   ///