diff --git a/lib/Transforms/Scalar/ADCE.cpp b/lib/Transforms/Scalar/ADCE.cpp
index 7307ff813a2..65e816e2e81 100644
--- a/lib/Transforms/Scalar/ADCE.cpp
+++ b/lib/Transforms/Scalar/ADCE.cpp
@@ -188,7 +188,8 @@ bool ADCE::doADCE() {
           // after it to the normal destination.
           std::vector<Value*> Args(II->op_begin()+3, II->op_end());
           std::string Name = II->getName(); II->setName("");
-          Instruction *NewCall = new CallInst(F, Args, Name, II);
+          CallInst *NewCall = new CallInst(F, Args, Name, II);
+          NewCall->setCallingConv(II->getCallingConv());
           II->replaceAllUsesWith(NewCall);
           new BranchInst(II->getNormalDest(), II);
 
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 2077b329160..218910feb20 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -4271,10 +4271,12 @@ bool InstCombiner::transformConstExprCastCall(CallSite CS) {
   if (InvokeInst *II = dyn_cast<InvokeInst>(Caller)) {
     NC = new InvokeInst(Callee, II->getNormalDest(), II->getUnwindDest(),
                         Args, Caller->getName(), Caller);
+    cast<InvokeInst>(II)->setCallingConv(II->getCallingConv());
   } else {
     NC = new CallInst(Callee, Args, Caller->getName(), Caller);
     if (cast<CallInst>(Caller)->isTailCall())
       cast<CallInst>(NC)->setTailCall();
+   cast<CallInst>(NC)->setCallingConv(cast<CallInst>(Caller)->getCallingConv());
   }
 
   // Insert a cast of the return type as necessary...