diff --git a/lib/CodeGen/MachineModuleInfo.cpp b/lib/CodeGen/MachineModuleInfo.cpp
index f813a55..2bc3941 100644
--- a/lib/CodeGen/MachineModuleInfo.cpp
+++ b/lib/CodeGen/MachineModuleInfo.cpp
@@ -315,18 +315,18 @@
 
 /// AnalyzeModule - Scan the module for global debug information.
 ///
-void MachineModuleInfo::AnalyzeModule(Module &M) {
+void MachineModuleInfo::AnalyzeModule(const Module &M) {
   // Insert functions in the llvm.used array (but not llvm.compiler.used) into
   // UsedFunctions.
-  GlobalVariable *GV = M.getGlobalVariable("llvm.used");
+  const GlobalVariable *GV = M.getGlobalVariable("llvm.used");
   if (!GV || !GV->hasInitializer()) return;
 
   // Should be an array of 'i8*'.
-  ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
+  const ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
   if (InitList == 0) return;
 
   for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
-    if (Function *F =
+    if (const Function *F =
           dyn_cast<Function>(InitList->getOperand(i)->stripPointerCasts()))
       UsedFunctions.insert(F);
 }
@@ -407,7 +407,7 @@
 /// addPersonality - Provide the personality function for the exception
 /// information.
 void MachineModuleInfo::addPersonality(MachineBasicBlock *LandingPad,
-                                       Function *Personality) {
+                                       const Function *Personality) {
   LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
   LP.Personality = Personality;
 
@@ -426,7 +426,7 @@
 /// addCatchTypeInfo - Provide the catch typeinfo for a landing pad.
 ///
 void MachineModuleInfo::addCatchTypeInfo(MachineBasicBlock *LandingPad,
-                                        std::vector<GlobalVariable *> &TyInfo) {
+                                  std::vector<const GlobalVariable *> &TyInfo) {
   LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
   for (unsigned N = TyInfo.size(); N; --N)
     LP.TypeIds.push_back(getTypeIDFor(TyInfo[N - 1]));
@@ -435,7 +435,7 @@
 /// addFilterTypeInfo - Provide the filter typeinfo for a landing pad.
 ///
 void MachineModuleInfo::addFilterTypeInfo(MachineBasicBlock *LandingPad,
-                                        std::vector<GlobalVariable *> &TyInfo) {
+                                  std::vector<const GlobalVariable *> &TyInfo) {
   LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
   std::vector<unsigned> IdsInFilter(TyInfo.size());
   for (unsigned I = 0, E = TyInfo.size(); I != E; ++I)
@@ -492,7 +492,7 @@
 
 /// getTypeIDFor - Return the type id for the specified typeinfo.  This is
 /// function wide.
-unsigned MachineModuleInfo::getTypeIDFor(GlobalVariable *TI) {
+unsigned MachineModuleInfo::getTypeIDFor(const GlobalVariable *TI) {
   for (unsigned i = 0, N = TypeInfos.size(); i != N; ++i)
     if (TypeInfos[i] == TI) return i + 1;
 
@@ -532,7 +532,7 @@
 }
 
 /// getPersonality - Return the personality function for the current function.
-Function *MachineModuleInfo::getPersonality() const {
+const Function *MachineModuleInfo::getPersonality() const {
   // FIXME: Until PR1414 will be fixed, we're using 1 personality function per
   // function
   return !LandingPads.empty() ? LandingPads[0].Personality : NULL;