diff --git a/include/llvm/iOther.h b/include/llvm/iOther.h
index 18779f9c328..4e7ef5c1e79 100644
--- a/include/llvm/iOther.h
+++ b/include/llvm/iOther.h
@@ -70,6 +70,7 @@ public:
 class CallInst : public Instruction {
   CallInst(const CallInst &CI);
   void init(Value *Func, const std::vector<Value*> &Params);
+  void init(Value *Func, Value *Actual1, Value *Actual2);
   void init(Value *Func, Value *Actual);
   void init(Value *Func);
 
@@ -79,7 +80,12 @@ public:
   CallInst(Value *F, const std::vector<Value*> &Par,
            const std::string &Name, BasicBlock *InsertAtEnd);
 
-  // Alternate CallInst ctors w/ one actual & no actuals, respectively.
+  // Alternate CallInst ctors w/ two actuals, w/ one actual and no
+  // actuals, respectively.
+  CallInst(Value *F, Value *Actual1, Value *Actual2,
+           const std::string& Name = "", Instruction *InsertBefore = 0);
+  CallInst(Value *F, Value *Actual1, Value *Actual2,
+           const std::string& Name, BasicBlock *InsertAtEnd);
   CallInst(Value *F, Value *Actual, const std::string& Name = "",
            Instruction *InsertBefore = 0);
   CallInst(Value *F, Value *Actual, const std::string& Name,
diff --git a/lib/VMCore/iCall.cpp b/lib/VMCore/iCall.cpp
index 9a81f7948f9..1e88be3e935 100644
--- a/lib/VMCore/iCall.cpp
+++ b/lib/VMCore/iCall.cpp
@@ -38,6 +38,21 @@ void CallInst::init(Value *Func, const std::vector<Value*> &Params)
     Operands.push_back(Use(Params[i], this));
 }
 
+void CallInst::init(Value *Func, Value *Actual1, Value *Actual2)
+{
+  Operands.reserve(3);
+  Operands.push_back(Use(Func, this));
+  
+  const FunctionType *MTy = 
+    cast<FunctionType>(cast<PointerType>(Func->getType())->getElementType());
+
+  assert((MTy->getNumParams() == 2 ||
+          (MTy->isVarArg() && MTy->getNumParams() == 0)) &&
+	 "Calling a function with bad signature");
+  Operands.push_back(Use(Actual1, this));
+  Operands.push_back(Use(Actual2, this));
+}
+
 void CallInst::init(Value *Func, Value *Actual)
 {
   Operands.reserve(2);
@@ -79,6 +94,22 @@ CallInst::CallInst(Value *Func, const std::vector<Value*> &Params,
   init(Func, Params);
 }
 
+CallInst::CallInst(Value *Func, Value *Actual1, Value *Actual2,
+                   const std::string &Name, Instruction  *InsertBefore)
+  : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
+                                   ->getElementType())->getReturnType(),
+                Instruction::Call, Name, InsertBefore) {
+  init(Func, Actual1, Actual2);
+}
+
+CallInst::CallInst(Value *Func, Value *Actual1, Value *Actual2,
+                   const std::string &Name, BasicBlock  *InsertAtEnd)
+  : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())
+                                   ->getElementType())->getReturnType(),
+                Instruction::Call, Name, InsertAtEnd) {
+  init(Func, Actual1, Actual2);
+}
+
 CallInst::CallInst(Value *Func, Value* Actual, const std::string &Name,
                    Instruction  *InsertBefore)
   : Instruction(cast<FunctionType>(cast<PointerType>(Func->getType())