Index: lib/Transforms/Utils/CloneModule.cpp
===================================================================
--- lib/Transforms/Utils/CloneModule.cpp
+++ lib/Transforms/Utils/CloneModule.cpp
@@ -124,8 +124,11 @@
   for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I) {
     Function *F = cast<Function>(VMap[&*I]);
     if (!ShouldCloneDefinition(&*I)) {
-      // Skip after setting the correct linkage for an external reference.
+      // Skip after setting the correct linkage for an external reference,
       F->setLinkage(GlobalValue::ExternalLinkage);
+      // ... and mapping the personality function.
+      if (I->hasPersonalityFn())
+        F->setPersonalityFn(MapValue(I->getPersonalityFn(), VMap));
       continue;
     }
     if (!I->isDeclaration()) {
Index: test/tools/llvm-split/personality.ll
===================================================================
--- /dev/null
+++ test/tools/llvm-split/personality.ll
@@ -0,0 +1,17 @@
+; Test that "personality" attributes are correctly updated when cloning modules.
+; RUN: llvm-split -o %t %s
+; RUN: llvm-dis -o - %t0 | FileCheck --check-prefix=CHECK0 %s
+; RUN: llvm-dis -o - %t1 | FileCheck --check-prefix=CHECK1 %s
+
+; CHECK0: define void @foo()
+; CHECK1: declare void @foo()
+define void @foo() {
+  ret void
+}
+
+; CHECK0: declare void @bar() personality i8* bitcast (void ()* @foo to i8*)
+; CHECK1: define void @bar() personality i8* bitcast (void ()* @foo to i8*)
+define void @bar() personality i8* bitcast (void ()* @foo to i8*)
+{
+  ret void
+}