diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index f25ac97ef5c..99a000fa926 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -4793,6 +4793,9 @@ static bool CanEvaluateInDifferentType(Value *V, const Type *Ty,
   if (!I || !I->hasOneUse()) return false;
   
   switch (I->getOpcode()) {
+  case Instruction::Add:
+  case Instruction::Sub:
+  case Instruction::Mul:
   case Instruction::And:
   case Instruction::Or:
   case Instruction::Xor:
@@ -4824,6 +4827,9 @@ Value *InstCombiner::EvaluateInDifferentType(Value *V, const Type *Ty) {
   Instruction *I = cast<Instruction>(V);
   Instruction *Res;
   switch (I->getOpcode()) {
+  case Instruction::Add:
+  case Instruction::Sub:
+  case Instruction::Mul:
   case Instruction::And:
   case Instruction::Or:
   case Instruction::Xor: {