diff --git a/lib/CodeGen/ShadowStackGC.cpp b/lib/CodeGen/ShadowStackGC.cpp
index 0e6d479..5240bef 100644
--- a/lib/CodeGen/ShadowStackGC.cpp
+++ b/lib/CodeGen/ShadowStackGC.cpp
@@ -160,7 +160,7 @@
           Args.clear();
           Args.append(CI->op_begin() + 1, CI->op_end());
 
-          InvokeInst *II = InvokeInst::Create(CI->getOperand(0),
+          InvokeInst *II = InvokeInst::Create(CI->getCalledValue(),
                                               NewBB, CleanupBB,
                                               Args.begin(), Args.end(),
                                               CI->getName(), CallBB);
diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp
index 0d51be7..b429213 100644
--- a/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/lib/Transforms/IPO/GlobalOpt.cpp
@@ -2295,10 +2295,10 @@
       }
 
       // Cannot handle inline asm.
-      if (isa<InlineAsm>(CI->getOperand(0))) return false;
+      if (isa<InlineAsm>(CI->getCalledValue())) return false;
 
       // Resolve function pointers.
-      Function *Callee = dyn_cast<Function>(getVal(Values, CI->getOperand(0)));
+      Function *Callee = dyn_cast<Function>(getVal(Values, CI->getCalledValue()));
       if (!Callee) return false;  // Cannot resolve.
 
       SmallVector<Constant*, 8> Formals;
diff --git a/lib/Transforms/InstCombine/InstCombineCalls.cpp b/lib/Transforms/InstCombine/InstCombineCalls.cpp
index e025b05..5e98d5b 100644
--- a/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -287,7 +287,7 @@
           const Type *Tys[3] = { CI.getOperand(1)->getType(),
                                  CI.getOperand(2)->getType(),
                                  CI.getOperand(3)->getType() };
-          CI.setOperand(0, 
+          CI.setCalledFunction( 
                         Intrinsic::getDeclaration(M, MemCpyID, Tys, 3));
           Changed = true;
         }
@@ -526,7 +526,7 @@
       // X + 0 -> {X, false}
       if (RHS->isZero()) {
         Constant *V[] = {
-          UndefValue::get(II->getOperand(0)->getType()),
+          UndefValue::get(II->getCalledValue()->getType()),
           ConstantInt::getFalse(II->getContext())
         };
         Constant *Struct = ConstantStruct::get(II->getContext(), V, 2, false);
diff --git a/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/lib/Transforms/Scalar/MemCpyOptimizer.cpp
index 3b305ae..3611b8e 100644
--- a/lib/Transforms/Scalar/MemCpyOptimizer.cpp
+++ b/lib/Transforms/Scalar/MemCpyOptimizer.cpp
@@ -744,7 +744,7 @@
   const Type *ArgTys[3] = { M->getRawDest()->getType(),
                             M->getRawSource()->getType(),
                             M->getLength()->getType() };
-  M->setOperand(0,Intrinsic::getDeclaration(Mod, Intrinsic::memcpy, ArgTys, 3));
+  M->setCalledFunction(Intrinsic::getDeclaration(Mod, Intrinsic::memcpy, ArgTys, 3));
 
   // MemDep may have over conservative information about this instruction, just
   // conservatively flush it from the cache.
diff --git a/lib/Transforms/Scalar/ScalarReplAggregates.cpp b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
index 27c954b..5ca9ce3 100644
--- a/lib/Transforms/Scalar/ScalarReplAggregates.cpp
+++ b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
@@ -1316,7 +1316,7 @@
   }
   
   // Process each element of the aggregate.
-  Value *TheFn = MI->getOperand(0);
+  Value *TheFn = MI->getCalledValue();
   const Type *BytePtrTy = MI->getRawDest()->getType();
   bool SROADest = MI->getRawDest() == Inst;