diff --git a/include/llvm/Instructions.h b/include/llvm/Instructions.h
index 1ae495f..d2f7404 100644
--- a/include/llvm/Instructions.h
+++ b/include/llvm/Instructions.h
@@ -591,7 +591,7 @@
           "Both operands to ICmp instruction are not of the same type!");
     // Check that the operands are the right type
     assert((getOperand(0)->getType()->isIntOrIntVectorTy() ||
-            isa<PointerType>(getOperand(0)->getType())) &&
+            getOperand(0)->getType()->isPointerTy()) &&
            "Invalid operand types for ICmp instruction");
   }
 
@@ -612,7 +612,7 @@
           "Both operands to ICmp instruction are not of the same type!");
     // Check that the operands are the right type
     assert((getOperand(0)->getType()->isIntOrIntVectorTy() ||
-            isa<PointerType>(getOperand(0)->getType())) &&
+            getOperand(0)->getType()->isPointerTy()) &&
            "Invalid operand types for ICmp instruction");
   }
 
@@ -631,7 +631,7 @@
           "Both operands to ICmp instruction are not of the same type!");
     // Check that the operands are the right type
     assert((getOperand(0)->getType()->isIntOrIntVectorTy() ||
-            isa<PointerType>(getOperand(0)->getType())) &&
+            getOperand(0)->getType()->isPointerTy()) &&
            "Invalid operand types for ICmp instruction");
   }
 
diff --git a/include/llvm/Type.h b/include/llvm/Type.h
index c52419c..8780db7 100644
--- a/include/llvm/Type.h
+++ b/include/llvm/Type.h
@@ -243,6 +243,10 @@
   ///
   bool isStructTy() const { return ID == StructTyID; }
 
+  /// isUnionTy - True if this is an instance of UnionType.
+  ///
+  bool isUnionTy() const { return ID == UnionTyID; }
+
   /// isArrayTy - True if this is an instance of ArrayType.
   ///
   bool isArrayTy() const { return ID == ArrayTyID; }
diff --git a/lib/Analysis/AliasAnalysisEvaluator.cpp b/lib/Analysis/AliasAnalysisEvaluator.cpp
index 6b0a956..308b9e3 100644
--- a/lib/Analysis/AliasAnalysisEvaluator.cpp
+++ b/lib/Analysis/AliasAnalysisEvaluator.cpp
@@ -115,11 +115,11 @@
   SetVector<CallSite> CallSites;
 
   for (Function::arg_iterator I = F.arg_begin(), E = F.arg_end(); I != E; ++I)
-    if (isa<PointerType>(I->getType()))    // Add all pointer arguments
+    if (I->getType()->isPointerTy())    // Add all pointer arguments
       Pointers.insert(I);
 
   for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I) {
-    if (isa<PointerType>(I->getType())) // Add all pointer instructions
+    if (I->getType()->isPointerTy()) // Add all pointer instructions
       Pointers.insert(&*I);
     Instruction &Inst = *I;
     User::op_iterator OI = Inst.op_begin();
@@ -128,7 +128,7 @@
         isa<Function>(CS.getCalledValue()))
       ++OI;  // Skip actual functions for direct function calls.
     for (; OI != Inst.op_end(); ++OI)
-      if (isa<PointerType>((*OI)->getType()) && !isa<ConstantPointerNull>(*OI))
+      if ((*OI)->getType()->isPointerTy() && !isa<ConstantPointerNull>(*OI))
         Pointers.insert(*OI);
 
     if (CS.getInstruction()) CallSites.insert(CS);
diff --git a/lib/Analysis/BasicAliasAnalysis.cpp b/lib/Analysis/BasicAliasAnalysis.cpp
index 36b831c..31a649d 100644
--- a/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/lib/Analysis/BasicAliasAnalysis.cpp
@@ -290,7 +290,7 @@
     for (CallSite::arg_iterator CI = CS.arg_begin(), CE = CS.arg_end();
          CI != CE; ++CI, ++ArgNo) {
       // Only look at the no-capture pointer arguments.
-      if (!isa<PointerType>((*CI)->getType()) ||
+      if (!(*CI)->getType()->isPointerTy() ||
           !CS.paramHasAttr(ArgNo+1, Attribute::NoCapture))
         continue;
       
@@ -662,7 +662,7 @@
   // Are we checking for alias of the same value?
   if (V1 == V2) return MustAlias;
 
-  if (!isa<PointerType>(V1->getType()) || !isa<PointerType>(V2->getType()))
+  if (!V1->getType()->isPointerTy() || !V2->getType()->isPointerTy())
     return NoAlias;  // Scalars cannot alias each other
 
   // Figure out what objects these things are pointing to if we can.
diff --git a/lib/Analysis/CaptureTracking.cpp b/lib/Analysis/CaptureTracking.cpp
index 10a8b11..8767c18 100644
--- a/lib/Analysis/CaptureTracking.cpp
+++ b/lib/Analysis/CaptureTracking.cpp
@@ -44,7 +44,7 @@
 /// counts as capturing it or not.
 bool llvm::PointerMayBeCaptured(const Value *V,
                                 bool ReturnCaptures, bool StoreCaptures) {
-  assert(isa<PointerType>(V->getType()) && "Capture is for pointers only!");
+  assert(V->getType()->isPointerTy() && "Capture is for pointers only!");
   SmallVector<Use*, Threshold> Worklist;
   SmallSet<Use*, Threshold> Visited;
   int Count = 0;
diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp
index 808e6fa..6bab5ec 100644
--- a/lib/Analysis/ConstantFolding.cpp
+++ b/lib/Analysis/ConstantFolding.cpp
@@ -359,7 +359,7 @@
       MapTy = Type::getInt32PtrTy(C->getContext());
     else if (LoadTy->isDoubleTy())
       MapTy = Type::getInt64PtrTy(C->getContext());
-    else if (isa<VectorType>(LoadTy)) {
+    else if (LoadTy->isVectorTy()) {
       MapTy = IntegerType::get(C->getContext(),
                                TD.getTypeAllocSizeInBits(LoadTy));
       MapTy = PointerType::getUnqual(MapTy);
@@ -605,7 +605,7 @@
   SmallVector<Constant*, 32> NewIdxs;
   do {
     if (const SequentialType *ATy = dyn_cast<SequentialType>(Ty)) {
-      if (isa<PointerType>(ATy)) {
+      if (ATy->isPointerTy()) {
         // The only pointer indexing we'll do is on the first index of the GEP.
         if (!NewIdxs.empty())
           break;
diff --git a/lib/Analysis/IPA/Andersens.cpp b/lib/Analysis/IPA/Andersens.cpp
index 4180206..2e35a56 100644
--- a/lib/Analysis/IPA/Andersens.cpp
+++ b/lib/Analysis/IPA/Andersens.cpp
@@ -750,7 +750,7 @@
     // The function itself is a memory object.
     unsigned First = NumObjects;
     ValueNodes[F] = NumObjects++;
-    if (isa<PointerType>(F->getFunctionType()->getReturnType()))
+    if (F->getFunctionType()->getReturnType()->isPointerTy())
       ReturnNodes[F] = NumObjects++;
     if (F->getFunctionType()->isVarArg())
       VarargNodes[F] = NumObjects++;
@@ -760,7 +760,7 @@
     for (Function::arg_iterator I = F->arg_begin(), E = F->arg_end();
          I != E; ++I)
       {
-        if (isa<PointerType>(I->getType()))
+        if (I->getType()->isPointerTy())
           ValueNodes[I] = NumObjects++;
       }
     MaxK[First] = NumObjects - First;
@@ -771,7 +771,7 @@
     for (inst_iterator II = inst_begin(F), E = inst_end(F); II != E; ++II) {
       // If this is an heap or stack allocation, create a node for the memory
       // object.
-      if (isa<PointerType>(II->getType())) {
+      if (II->getType()->isPointerTy()) {
         ValueNodes[&*II] = NumObjects++;
         if (AllocaInst *AI = dyn_cast<AllocaInst>(&*II))
           ObjectNodes[AI] = NumObjects++;
@@ -801,7 +801,7 @@
 /// getNodeForConstantPointer - Return the node corresponding to the constant
 /// pointer itself.
 unsigned Andersens::getNodeForConstantPointer(Constant *C) {
-  assert(isa<PointerType>(C->getType()) && "Not a constant pointer!");
+  assert(C->getType()->isPointerTy() && "Not a constant pointer!");
 
   if (isa<ConstantPointerNull>(C) || isa<UndefValue>(C))
     return NullPtr;
@@ -828,7 +828,7 @@
 /// getNodeForConstantPointerTarget - Return the node POINTED TO by the
 /// specified constant pointer.
 unsigned Andersens::getNodeForConstantPointerTarget(Constant *C) {
-  assert(isa<PointerType>(C->getType()) && "Not a constant pointer!");
+  assert(C->getType()->isPointerTy() && "Not a constant pointer!");
 
   if (isa<ConstantPointerNull>(C))
     return NullObject;
@@ -857,7 +857,7 @@
 void Andersens::AddGlobalInitializerConstraints(unsigned NodeIndex,
                                                 Constant *C) {
   if (C->getType()->isSingleValueType()) {
-    if (isa<PointerType>(C->getType()))
+    if (C->getType()->isPointerTy())
       Constraints.push_back(Constraint(Constraint::Copy, NodeIndex,
                                        getNodeForConstantPointer(C)));
   } else if (C->isNullValue()) {
@@ -878,7 +878,7 @@
 /// returned by this function.
 void Andersens::AddConstraintsForNonInternalLinkage(Function *F) {
   for (Function::arg_iterator I = F->arg_begin(), E = F->arg_end(); I != E; ++I)
-    if (isa<PointerType>(I->getType()))
+    if (I->getType()->isPointerTy())
       // If this is an argument of an externally accessible function, the
       // incoming pointer might point to anything.
       Constraints.push_back(Constraint(Constraint::Copy, getNode(I),
@@ -940,8 +940,8 @@
 
     const FunctionType *FTy = F->getFunctionType();
     if (FTy->getNumParams() > 1 && 
-        isa<PointerType>(FTy->getParamType(0)) &&
-        isa<PointerType>(FTy->getParamType(1))) {
+        FTy->getParamType(0)->isPointerTy() &&
+        FTy->getParamType(1)->isPointerTy()) {
 
       // *Dest = *Src, which requires an artificial graph node to represent the
       // constraint.  It is broken up into *Dest = temp, temp = *Src
@@ -966,7 +966,7 @@
       F->getName() == "strtok") {
     const FunctionType *FTy = F->getFunctionType();
     if (FTy->getNumParams() > 0 && 
-        isa<PointerType>(FTy->getParamType(0))) {
+        FTy->getParamType(0)->isPointerTy()) {
       Constraints.push_back(Constraint(Constraint::Copy,
                                        getNode(CS.getInstruction()),
                                        getNode(CS.getArgument(0))));
@@ -984,7 +984,7 @@
 /// true.
 bool Andersens::AnalyzeUsesOfFunction(Value *V) {
 
-  if (!isa<PointerType>(V->getType())) return true;
+  if (!V->getType()->isPointerTy()) return true;
 
   for (Value::use_iterator UI = V->use_begin(), E = V->use_end(); UI != E; ++UI)
     if (isa<LoadInst>(*UI)) {
@@ -1063,7 +1063,7 @@
 
   for (Module::iterator F = M.begin(), E = M.end(); F != E; ++F) {
     // Set up the return value node.
-    if (isa<PointerType>(F->getFunctionType()->getReturnType()))
+    if (F->getFunctionType()->getReturnType()->isPointerTy())
       GraphNodes[getReturnNode(F)].setValue(F);
     if (F->getFunctionType()->isVarArg())
       GraphNodes[getVarargNode(F)].setValue(F);
@@ -1071,7 +1071,7 @@
     // Set up incoming argument nodes.
     for (Function::arg_iterator I = F->arg_begin(), E = F->arg_end();
          I != E; ++I)
-      if (isa<PointerType>(I->getType()))
+      if (I->getType()->isPointerTy())
         getNodeValue(*I);
 
     // At some point we should just add constraints for the escaping functions
@@ -1087,7 +1087,7 @@
       visit(F);
     } else {
       // External functions that return pointers return the universal set.
-      if (isa<PointerType>(F->getFunctionType()->getReturnType()))
+      if (F->getFunctionType()->getReturnType()->isPointerTy())
         Constraints.push_back(Constraint(Constraint::Copy,
                                          getReturnNode(F),
                                          UniversalSet));
@@ -1096,7 +1096,7 @@
       // stored into them.
       for (Function::arg_iterator I = F->arg_begin(), E = F->arg_end();
            I != E; ++I)
-        if (isa<PointerType>(I->getType())) {
+        if (I->getType()->isPointerTy()) {
           // Pointers passed into external functions could have anything stored
           // through them.
           Constraints.push_back(Constraint(Constraint::Store, getNode(I),
@@ -1159,7 +1159,7 @@
 }
 
 void Andersens::visitReturnInst(ReturnInst &RI) {
-  if (RI.getNumOperands() && isa<PointerType>(RI.getOperand(0)->getType()))
+  if (RI.getNumOperands() && RI.getOperand(0)->getType()->isPointerTy())
     // return V   -->   <Copy/retval{F}/v>
     Constraints.push_back(Constraint(Constraint::Copy,
                                      getReturnNode(RI.getParent()->getParent()),
@@ -1167,14 +1167,14 @@
 }
 
 void Andersens::visitLoadInst(LoadInst &LI) {
-  if (isa<PointerType>(LI.getType()))
+  if (LI.getType()->isPointerTy())
     // P1 = load P2  -->  <Load/P1/P2>
     Constraints.push_back(Constraint(Constraint::Load, getNodeValue(LI),
                                      getNode(LI.getOperand(0))));
 }
 
 void Andersens::visitStoreInst(StoreInst &SI) {
-  if (isa<PointerType>(SI.getOperand(0)->getType()))
+  if (SI.getOperand(0)->getType()->isPointerTy())
     // store P1, P2  -->  <Store/P2/P1>
     Constraints.push_back(Constraint(Constraint::Store,
                                      getNode(SI.getOperand(1)),
@@ -1188,7 +1188,7 @@
 }
 
 void Andersens::visitPHINode(PHINode &PN) {
-  if (isa<PointerType>(PN.getType())) {
+  if (PN.getType()->isPointerTy()) {
     unsigned PNN = getNodeValue(PN);
     for (unsigned i = 0, e = PN.getNumIncomingValues(); i != e; ++i)
       // P1 = phi P2, P3  -->  <Copy/P1/P2>, <Copy/P1/P3>, ...
@@ -1199,8 +1199,8 @@
 
 void Andersens::visitCastInst(CastInst &CI) {
   Value *Op = CI.getOperand(0);
-  if (isa<PointerType>(CI.getType())) {
-    if (isa<PointerType>(Op->getType())) {
+  if (CI.getType()->isPointerTy()) {
+    if (Op->getType()->isPointerTy()) {
       // P1 = cast P2  --> <Copy/P1/P2>
       Constraints.push_back(Constraint(Constraint::Copy, getNodeValue(CI),
                                        getNode(CI.getOperand(0))));
@@ -1213,7 +1213,7 @@
       getNodeValue(CI);
 #endif
     }
-  } else if (isa<PointerType>(Op->getType())) {
+  } else if (Op->getType()->isPointerTy()) {
     // int = cast P1 --> <Copy/Univ/P1>
 #if 0
     Constraints.push_back(Constraint(Constraint::Copy,
@@ -1226,7 +1226,7 @@
 }
 
 void Andersens::visitSelectInst(SelectInst &SI) {
-  if (isa<PointerType>(SI.getType())) {
+  if (SI.getType()->isPointerTy()) {
     unsigned SIN = getNodeValue(SI);
     // P1 = select C, P2, P3   ---> <Copy/P1/P2>, <Copy/P1/P3>
     Constraints.push_back(Constraint(Constraint::Copy, SIN,
@@ -1254,9 +1254,9 @@
   if (F && F->isDeclaration() && AddConstraintsForExternalCall(CS, F))
     return;
 
-  if (isa<PointerType>(CS.getType())) {
+  if (CS.getType()->isPointerTy()) {
     unsigned CSN = getNode(CS.getInstruction());
-    if (!F || isa<PointerType>(F->getFunctionType()->getReturnType())) {
+    if (!F || F->getFunctionType()->getReturnType()->isPointerTy()) {
       if (IsDeref)
         Constraints.push_back(Constraint(Constraint::Load, CSN,
                                          getNode(CallValue), CallReturnPos));
@@ -1269,7 +1269,7 @@
       Constraints.push_back(Constraint(Constraint::Copy, CSN,
                                        UniversalSet));
     }
-  } else if (F && isa<PointerType>(F->getFunctionType()->getReturnType())) {
+  } else if (F && F->getFunctionType()->getReturnType()->isPointerTy()) {
 #if FULL_UNIVERSAL
     Constraints.push_back(Constraint(Constraint::Copy,
                                      UniversalSet,
@@ -1291,7 +1291,7 @@
     for (; AI != AE && ArgI != ArgE; ++AI, ++ArgI) 
       {
 #if !FULL_UNIVERSAL
-        if (external && isa<PointerType>((*ArgI)->getType())) 
+        if (external && (*ArgI)->getType()->isPointerTy()) 
           {
             // Add constraint that ArgI can now point to anything due to
             // escaping, as can everything it points to. The second portion of
@@ -1301,8 +1301,8 @@
                                              UniversalSet));
           }
 #endif
-        if (isa<PointerType>(AI->getType())) {
-          if (isa<PointerType>((*ArgI)->getType())) {
+        if (AI->getType()->isPointerTy()) {
+          if ((*ArgI)->getType()->isPointerTy()) {
             // Copy the actual argument into the formal argument.
             Constraints.push_back(Constraint(Constraint::Copy, getNode(AI),
                                              getNode(*ArgI)));
@@ -1310,7 +1310,7 @@
             Constraints.push_back(Constraint(Constraint::Copy, getNode(AI),
                                              UniversalSet));
           }
-        } else if (isa<PointerType>((*ArgI)->getType())) {
+        } else if ((*ArgI)->getType()->isPointerTy()) {
 #if FULL_UNIVERSAL
           Constraints.push_back(Constraint(Constraint::Copy,
                                            UniversalSet,
@@ -1326,7 +1326,7 @@
     //Indirect Call
     unsigned ArgPos = CallFirstArgPos;
     for (; ArgI != ArgE; ++ArgI) {
-      if (isa<PointerType>((*ArgI)->getType())) {
+      if ((*ArgI)->getType()->isPointerTy()) {
         // Copy the actual argument into the formal argument.
         Constraints.push_back(Constraint(Constraint::Store,
                                          getNode(CallValue),
@@ -1341,14 +1341,14 @@
   // Copy all pointers passed through the varargs section to the varargs node.
   if (F && F->getFunctionType()->isVarArg())
     for (; ArgI != ArgE; ++ArgI)
-      if (isa<PointerType>((*ArgI)->getType()))
+      if ((*ArgI)->getType()->isPointerTy())
         Constraints.push_back(Constraint(Constraint::Copy, getVarargNode(F),
                                          getNode(*ArgI)));
   // If more arguments are passed in than we track, just drop them on the floor.
 }
 
 void Andersens::visitCallSite(CallSite CS) {
-  if (isa<PointerType>(CS.getType()))
+  if (CS.getType()->isPointerTy())
     getNodeValue(*CS.getInstruction());
 
   if (Function *F = CS.getCalledFunction()) {
@@ -2782,7 +2782,7 @@
   assert(N->getValue() != 0 && "Never set node label!");
   Value *V = N->getValue();
   if (Function *F = dyn_cast<Function>(V)) {
-    if (isa<PointerType>(F->getFunctionType()->getReturnType()) &&
+    if (F->getFunctionType()->getReturnType()->isPointerTy() &&
         N == &GraphNodes[getReturnNode(F)]) {
       dbgs() << F->getName() << ":retval";
       return;
diff --git a/lib/Analysis/IPA/GlobalsModRef.cpp b/lib/Analysis/IPA/GlobalsModRef.cpp
index ec94bc8..7b43089 100644
--- a/lib/Analysis/IPA/GlobalsModRef.cpp
+++ b/lib/Analysis/IPA/GlobalsModRef.cpp
@@ -213,7 +213,7 @@
         ++NumNonAddrTakenGlobalVars;
 
         // If this global holds a pointer type, see if it is an indirect global.
-        if (isa<PointerType>(I->getType()->getElementType()) &&
+        if (I->getType()->getElementType()->isPointerTy() &&
             AnalyzeIndirectGlobalMemory(I))
           ++NumIndirectGlobalVars;
       }
@@ -231,7 +231,7 @@
                                          std::vector<Function*> &Readers,
                                          std::vector<Function*> &Writers,
                                          GlobalValue *OkayStoreDest) {
-  if (!isa<PointerType>(V->getType())) return true;
+  if (!V->getType()->isPointerTy()) return true;
 
   for (Value::use_iterator UI = V->use_begin(), E = V->use_end(); UI != E; ++UI)
     if (LoadInst *LI = dyn_cast<LoadInst>(*UI)) {
diff --git a/lib/Analysis/InlineCost.cpp b/lib/Analysis/InlineCost.cpp
index 972d034..ca50a17 100644
--- a/lib/Analysis/InlineCost.cpp
+++ b/lib/Analysis/InlineCost.cpp
@@ -84,7 +84,7 @@
 //
 unsigned InlineCostAnalyzer::FunctionInfo::
          CountCodeReductionForAlloca(Value *V) {
-  if (!isa<PointerType>(V->getType())) return 0;  // Not a pointer
+  if (!V->getType()->isPointerTy()) return 0;  // Not a pointer
   unsigned Reduction = 0;
   for (Value::use_iterator UI = V->use_begin(), E = V->use_end(); UI != E;++UI){
     Instruction *I = cast<Instruction>(*UI);
@@ -175,7 +175,7 @@
         this->usesDynamicAlloca = true;
     }
 
-    if (isa<ExtractElementInst>(II) || isa<VectorType>(II->getType()))
+    if (isa<ExtractElementInst>(II) || II->getType()->isVectorTy())
       ++NumVectorInsts; 
     
     if (const CastInst *CI = dyn_cast<CastInst>(II)) {
diff --git a/lib/Analysis/MemoryDependenceAnalysis.cpp b/lib/Analysis/MemoryDependenceAnalysis.cpp
index 2d74709d..183edf4 100644
--- a/lib/Analysis/MemoryDependenceAnalysis.cpp
+++ b/lib/Analysis/MemoryDependenceAnalysis.cpp
@@ -580,7 +580,7 @@
 void MemoryDependenceAnalysis::
 getNonLocalPointerDependency(Value *Pointer, bool isLoad, BasicBlock *FromBB,
                              SmallVectorImpl<NonLocalDepResult> &Result) {
-  assert(isa<PointerType>(Pointer->getType()) &&
+  assert(Pointer->getType()->isPointerTy() &&
          "Can't get pointer deps of a non-pointer!");
   Result.clear();
   
@@ -1009,7 +1009,7 @@
 /// in more places that cached info does not necessarily keep.
 void MemoryDependenceAnalysis::invalidateCachedPointerInfo(Value *Ptr) {
   // If Ptr isn't really a pointer, just ignore it.
-  if (!isa<PointerType>(Ptr->getType())) return;
+  if (!Ptr->getType()->isPointerTy()) return;
   // Flush store info for the pointer.
   RemoveCachedNonLocalPointerDependencies(ValueIsLoadPair(Ptr, false));
   // Flush load info for the pointer.
@@ -1050,7 +1050,7 @@
   
   // Remove it from both the load info and the store info.  The instruction
   // can't be in either of these maps if it is non-pointer.
-  if (isa<PointerType>(RemInst->getType())) {
+  if (RemInst->getType()->isPointerTy()) {
     RemoveCachedNonLocalPointerDependencies(ValueIsLoadPair(RemInst, false));
     RemoveCachedNonLocalPointerDependencies(ValueIsLoadPair(RemInst, true));
   }
diff --git a/lib/Analysis/PointerTracking.cpp b/lib/Analysis/PointerTracking.cpp
index 8da07e7..ce7ac89 100644
--- a/lib/Analysis/PointerTracking.cpp
+++ b/lib/Analysis/PointerTracking.cpp
@@ -231,7 +231,7 @@
   // this should be safe for the same reason its safe for SCEV.
   PointerTracking &PT = *const_cast<PointerTracking*>(this);
   for (inst_iterator I=inst_begin(*FF), E=inst_end(*FF); I != E; ++I) {
-    if (!isa<PointerType>(I->getType()))
+    if (!I->getType()->isPointerTy())
       continue;
     Value *Base;
     const SCEV *Limit, *Offset;
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index 9ee7d3a..82200cd 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -214,8 +214,8 @@
 SCEVTruncateExpr::SCEVTruncateExpr(const FoldingSetNodeID &ID,
                                    const SCEV *op, const Type *ty)
   : SCEVCastExpr(ID, scTruncate, op, ty) {
-  assert((Op->getType()->isIntegerTy() || isa<PointerType>(Op->getType())) &&
-         (Ty->isIntegerTy() || isa<PointerType>(Ty)) &&
+  assert((Op->getType()->isIntegerTy() || Op->getType()->isPointerTy()) &&
+         (Ty->isIntegerTy() || Ty->isPointerTy()) &&
          "Cannot truncate non-integer value!");
 }
 
@@ -226,8 +226,8 @@
 SCEVZeroExtendExpr::SCEVZeroExtendExpr(const FoldingSetNodeID &ID,
                                        const SCEV *op, const Type *ty)
   : SCEVCastExpr(ID, scZeroExtend, op, ty) {
-  assert((Op->getType()->isIntegerTy() || isa<PointerType>(Op->getType())) &&
-         (Ty->isIntegerTy() || isa<PointerType>(Ty)) &&
+  assert((Op->getType()->isIntegerTy() || Op->getType()->isPointerTy()) &&
+         (Ty->isIntegerTy() || Ty->isPointerTy()) &&
          "Cannot zero extend non-integer value!");
 }
 
@@ -238,8 +238,8 @@
 SCEVSignExtendExpr::SCEVSignExtendExpr(const FoldingSetNodeID &ID,
                                        const SCEV *op, const Type *ty)
   : SCEVCastExpr(ID, scSignExtend, op, ty) {
-  assert((Op->getType()->isIntegerTy() || isa<PointerType>(Op->getType())) &&
-         (Ty->isIntegerTy() || isa<PointerType>(Ty)) &&
+  assert((Op->getType()->isIntegerTy() || Op->getType()->isPointerTy()) &&
+         (Ty->isIntegerTy() || Ty->isPointerTy()) &&
          "Cannot sign extend non-integer value!");
 }
 
@@ -416,7 +416,7 @@
             cast<PointerType>(CE->getOperand(0)->getType())->getElementType();
           // Ignore vector types here so that ScalarEvolutionExpander doesn't
           // emit getelementptrs that index into vectors.
-          if (isa<StructType>(Ty) || isa<ArrayType>(Ty)) {
+          if (Ty->isStructTy() || Ty->isArrayTy()) {
             CTy = Ty;
             FieldNo = CE->getOperand(2);
             return true;
@@ -518,9 +518,9 @@
 
         // Order pointer values after integer values. This helps SCEVExpander
         // form GEPs.
-        if (isa<PointerType>(LU->getType()) && !isa<PointerType>(RU->getType()))
+        if (LU->getType()->isPointerTy() && !RU->getType()->isPointerTy())
           return false;
-        if (isa<PointerType>(RU->getType()) && !isa<PointerType>(LU->getType()))
+        if (RU->getType()->isPointerTy() && !LU->getType()->isPointerTy())
           return true;
 
         // Compare getValueID values.
@@ -2308,7 +2308,7 @@
 /// has access to target-specific information.
 bool ScalarEvolution::isSCEVable(const Type *Ty) const {
   // Integers and pointers are always SCEVable.
-  return Ty->isIntegerTy() || isa<PointerType>(Ty);
+  return Ty->isIntegerTy() || Ty->isPointerTy();
 }
 
 /// getTypeSizeInBits - Return the size in bits of the specified type,
@@ -2326,7 +2326,7 @@
 
   // The only other support type is pointer. Without TargetData, conservatively
   // assume pointers are 64-bit.
-  assert(isa<PointerType>(Ty) && "isSCEVable permitted a non-SCEVable type!");
+  assert(Ty->isPointerTy() && "isSCEVable permitted a non-SCEVable type!");
   return 64;
 }
 
@@ -2341,7 +2341,7 @@
     return Ty;
 
   // The only other support type is pointer.
-  assert(isa<PointerType>(Ty) && "Unexpected non-pointer non-integer type!");
+  assert(Ty->isPointerTy() && "Unexpected non-pointer non-integer type!");
   if (TD) return TD->getIntPtrType(getContext());
 
   // Without TargetData, conservatively assume pointers are 64-bit.
@@ -2412,8 +2412,8 @@
 ScalarEvolution::getTruncateOrZeroExtend(const SCEV *V,
                                          const Type *Ty) {
   const Type *SrcTy = V->getType();
-  assert((SrcTy->isIntegerTy() || isa<PointerType>(SrcTy)) &&
-         (Ty->isIntegerTy() || isa<PointerType>(Ty)) &&
+  assert((SrcTy->isIntegerTy() || SrcTy->isPointerTy()) &&
+         (Ty->isIntegerTy() || Ty->isPointerTy()) &&
          "Cannot truncate or zero extend with non-integer arguments!");
   if (getTypeSizeInBits(SrcTy) == getTypeSizeInBits(Ty))
     return V;  // No conversion
@@ -2429,8 +2429,8 @@
 ScalarEvolution::getTruncateOrSignExtend(const SCEV *V,
                                          const Type *Ty) {
   const Type *SrcTy = V->getType();
-  assert((SrcTy->isIntegerTy() || isa<PointerType>(SrcTy)) &&
-         (Ty->isIntegerTy() || isa<PointerType>(Ty)) &&
+  assert((SrcTy->isIntegerTy() || SrcTy->isPointerTy()) &&
+         (Ty->isIntegerTy() || Ty->isPointerTy()) &&
          "Cannot truncate or zero extend with non-integer arguments!");
   if (getTypeSizeInBits(SrcTy) == getTypeSizeInBits(Ty))
     return V;  // No conversion
@@ -2445,8 +2445,8 @@
 const SCEV *
 ScalarEvolution::getNoopOrZeroExtend(const SCEV *V, const Type *Ty) {
   const Type *SrcTy = V->getType();
-  assert((SrcTy->isIntegerTy() || isa<PointerType>(SrcTy)) &&
-         (Ty->isIntegerTy() || isa<PointerType>(Ty)) &&
+  assert((SrcTy->isIntegerTy() || SrcTy->isPointerTy()) &&
+         (Ty->isIntegerTy() || Ty->isPointerTy()) &&
          "Cannot noop or zero extend with non-integer arguments!");
   assert(getTypeSizeInBits(SrcTy) <= getTypeSizeInBits(Ty) &&
          "getNoopOrZeroExtend cannot truncate!");
@@ -2461,8 +2461,8 @@
 const SCEV *
 ScalarEvolution::getNoopOrSignExtend(const SCEV *V, const Type *Ty) {
   const Type *SrcTy = V->getType();
-  assert((SrcTy->isIntegerTy() || isa<PointerType>(SrcTy)) &&
-         (Ty->isIntegerTy() || isa<PointerType>(Ty)) &&
+  assert((SrcTy->isIntegerTy() || SrcTy->isPointerTy()) &&
+         (Ty->isIntegerTy() || Ty->isPointerTy()) &&
          "Cannot noop or sign extend with non-integer arguments!");
   assert(getTypeSizeInBits(SrcTy) <= getTypeSizeInBits(Ty) &&
          "getNoopOrSignExtend cannot truncate!");
@@ -2478,8 +2478,8 @@
 const SCEV *
 ScalarEvolution::getNoopOrAnyExtend(const SCEV *V, const Type *Ty) {
   const Type *SrcTy = V->getType();
-  assert((SrcTy->isIntegerTy() || isa<PointerType>(SrcTy)) &&
-         (Ty->isIntegerTy() || isa<PointerType>(Ty)) &&
+  assert((SrcTy->isIntegerTy() || SrcTy->isPointerTy()) &&
+         (Ty->isIntegerTy() || Ty->isPointerTy()) &&
          "Cannot noop or any extend with non-integer arguments!");
   assert(getTypeSizeInBits(SrcTy) <= getTypeSizeInBits(Ty) &&
          "getNoopOrAnyExtend cannot truncate!");
@@ -2493,8 +2493,8 @@
 const SCEV *
 ScalarEvolution::getTruncateOrNoop(const SCEV *V, const Type *Ty) {
   const Type *SrcTy = V->getType();
-  assert((SrcTy->isIntegerTy() || isa<PointerType>(SrcTy)) &&
-         (Ty->isIntegerTy() || isa<PointerType>(Ty)) &&
+  assert((SrcTy->isIntegerTy() || SrcTy->isPointerTy()) &&
+         (Ty->isIntegerTy() || Ty->isPointerTy()) &&
          "Cannot truncate or noop with non-integer arguments!");
   assert(getTypeSizeInBits(SrcTy) >= getTypeSizeInBits(Ty) &&
          "getTruncateOrNoop cannot extend!");
diff --git a/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp b/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp
index 498c4a8..564ec4b 100644
--- a/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp
+++ b/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp
@@ -89,7 +89,7 @@
   } else if (const SCEVAddExpr *A = dyn_cast<SCEVAddExpr>(S)) {
     // If there's a pointer operand, it'll be sorted at the end of the list.
     const SCEV *Last = A->getOperand(A->getNumOperands()-1);
-    if (isa<PointerType>(Last->getType()))
+    if (Last->getType()->isPointerTy())
       return GetBaseValue(Last);
   } else if (const SCEVUnknown *U = dyn_cast<SCEVUnknown>(S)) {
     // This is a leaf node.
diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp
index c2e1f89..ccd6d6b 100644
--- a/lib/Analysis/ScalarEvolutionExpander.cpp
+++ b/lib/Analysis/ScalarEvolutionExpander.cpp
@@ -536,7 +536,7 @@
   // pointer type, if there is one, or the last operand otherwise.
   int PIdx = 0;
   for (; PIdx != NumOperands - 1; ++PIdx)
-    if (isa<PointerType>(S->getOperand(PIdx)->getType())) break;
+    if (S->getOperand(PIdx)->getType()->isPointerTy()) break;
 
   // Expand code for the operand that we chose.
   Value *V = expand(S->getOperand(PIdx));
@@ -702,7 +702,7 @@
   // negative, insert a sub instead of an add for the increment (unless it's a
   // constant, because subtracts of constants are canonicalized to adds).
   const SCEV *Step = Normalized->getStepRecurrence(SE);
-  bool isPointer = isa<PointerType>(ExpandTy);
+  bool isPointer = ExpandTy->isPointerTy();
   bool isNegative = !isPointer && isNonConstantNegative(Step);
   if (isNegative)
     Step = SE.getNegativeSCEV(Step);
@@ -852,7 +852,7 @@
   PHINode *CanonicalIV = 0;
   if (PHINode *PN = L->getCanonicalInductionVariable())
     if (SE.isSCEVable(PN->getType()) &&
-        isa<IntegerType>(SE.getEffectiveSCEVType(PN->getType())) &&
+        SE.getEffectiveSCEVType(PN->getType())->isIntegerTy() &&
         SE.getTypeSizeInBits(PN->getType()) >= SE.getTypeSizeInBits(Ty))
       CanonicalIV = PN;
 
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 7cc9c0d..09344a3 100644
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -49,7 +49,7 @@
   assert(V && "No Value?");
   assert(Depth <= MaxDepth && "Limit Search Depth");
   unsigned BitWidth = Mask.getBitWidth();
-  assert((V->getType()->isIntOrIntVectorTy() || isa<PointerType>(V->getType()))
+  assert((V->getType()->isIntOrIntVectorTy() || V->getType()->isPointerTy())
          && "Not integer or pointer type!");
   assert((!TD ||
           TD->getTypeSizeInBits(V->getType()->getScalarType()) == BitWidth) &&
@@ -249,7 +249,7 @@
     unsigned SrcBitWidth;
     // Note that we handle pointer operands here because of inttoptr/ptrtoint
     // which fall through here.
-    if (isa<PointerType>(SrcTy))
+    if (SrcTy->isPointerTy())
       SrcBitWidth = TD->getTypeSizeInBits(SrcTy);
     else
       SrcBitWidth = SrcTy->getScalarSizeInBits();
@@ -269,10 +269,10 @@
   }
   case Instruction::BitCast: {
     const Type *SrcTy = I->getOperand(0)->getType();
-    if ((SrcTy->isIntegerTy() || isa<PointerType>(SrcTy)) &&
+    if ((SrcTy->isIntegerTy() || SrcTy->isPointerTy()) &&
         // TODO: For now, not handling conversions like:
         // (bitcast i64 %x to <2 x i32>)
-        !isa<VectorType>(I->getType())) {
+        !I->getType()->isVectorTy()) {
       ComputeMaskedBits(I->getOperand(0), Mask, KnownZero, KnownOne, TD,
                         Depth+1);
       return;
@@ -980,7 +980,7 @@
 /// may not be represented in the result.
 static Value *GetLinearExpression(Value *V, APInt &Scale, APInt &Offset,
                                   const TargetData *TD, unsigned Depth) {
-  assert(isa<IntegerType>(V->getType()) && "Not an integer value");
+  assert(V->getType()->isIntegerTy() && "Not an integer value");
 
   // Limit our recursion depth.
   if (Depth == 6) {
@@ -1253,7 +1253,7 @@
   if (idx_begin == idx_end)
     return V;
   // We have indices, so V should have an indexable type
-  assert((isa<StructType>(V->getType()) || isa<ArrayType>(V->getType()))
+  assert((V->getType()->isStructTy() || V->getType()->isArrayTy())
          && "Not looking at a struct or array?");
   assert(ExtractValueInst::getIndexedType(V->getType(), idx_begin, idx_end)
          && "Invalid indices for type?");
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index 9cae0d2..89ab270 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -614,7 +614,7 @@
     Aliasee = ID.ConstantVal;
   }
 
-  if (!isa<PointerType>(Aliasee->getType()))
+  if (!Aliasee->getType()->isPointerTy())
     return Error(AliaseeLoc, "alias must have pointer type");
 
   // Okay, create the alias but do not insert it into the module yet.
@@ -685,7 +685,7 @@
       return true;
   }
 
-  if (isa<FunctionType>(Ty) || Ty->isLabelTy())
+  if (Ty->isFunctionTy() || Ty->isLabelTy())
     return Error(TyLoc, "invalid type for global variable");
 
   GlobalVariable *GV = 0;
@@ -2256,7 +2256,7 @@
     } else {
       assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
       if (!Val0->getType()->isIntOrIntVectorTy() &&
-          !isa<PointerType>(Val0->getType()))
+          !Val0->getType()->isPointerTy())
         return Error(ID.Loc, "icmp requires pointer or integer operands");
       ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
     }
@@ -2370,7 +2370,7 @@
       return true;
 
     if (Opc == Instruction::GetElementPtr) {
-      if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
+      if (Elts.size() == 0 || !Elts[0]->getType()->isPointerTy())
         return Error(ID.Loc, "getelementptr requires pointer operand");
 
       if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
@@ -2470,7 +2470,7 @@
 
 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
                                    PerFunctionState *PFS) {
-  if (isa<FunctionType>(Ty))
+  if (Ty->isFunctionTy())
     return Error(ID.Loc, "functions are not values, refer to them as pointers");
 
   switch (ID.Kind) {
@@ -2509,7 +2509,7 @@
     V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
     return V == 0;
   case ValID::t_APSInt:
-    if (!isa<IntegerType>(Ty))
+    if (!Ty->isIntegerTy())
       return Error(ID.Loc, "integer constant must have integer type");
     ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
     V = ConstantInt::get(Context, ID.APSIntVal);
@@ -2535,7 +2535,7 @@
 
     return false;
   case ValID::t_Null:
-    if (!isa<PointerType>(Ty))
+    if (!Ty->isPointerTy())
       return Error(ID.Loc, "null must be a pointer type");
     V = ConstantPointerNull::get(cast<PointerType>(Ty));
     return false;
@@ -2547,7 +2547,7 @@
     V = UndefValue::get(Ty);
     return false;
   case ValID::t_EmptyArray:
-    if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
+    if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
       return Error(ID.Loc, "invalid empty array initializer");
     V = UndefValue::get(Ty);
     return false;
@@ -3186,7 +3186,7 @@
       ParseToken(lltok::lsquare, "expected '[' with switch table"))
     return true;
 
-  if (!isa<IntegerType>(Cond->getType()))
+  if (!Cond->getType()->isIntegerTy())
     return Error(CondLoc, "switch condition must have integer type");
 
   // Parse the jump table pairs.
@@ -3229,7 +3229,7 @@
       ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
     return true;
   
-  if (!isa<PointerType>(Address->getType()))
+  if (!Address->getType()->isPointerTy())
     return Error(AddrLoc, "indirectbr address must have pointer type");
   
   // Parse the destination list.
@@ -3436,7 +3436,7 @@
   } else {
     assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
     if (!LHS->getType()->isIntOrIntVectorTy() &&
-        !isa<PointerType>(LHS->getType()))
+        !LHS->getType()->isPointerTy())
       return Error(Loc, "icmp requires integer operands");
     Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
   }
@@ -3761,7 +3761,7 @@
                          BasicBlock* BB) {
   Value *Val; LocTy Loc;
   if (ParseTypeAndValue(Val, Loc, PFS)) return true;
-  if (!isa<PointerType>(Val->getType()))
+  if (!Val->getType()->isPointerTy())
     return Error(Loc, "operand to free must be a pointer");
   Inst = CallInst::CreateFree(Val, BB);
   return false;
@@ -3778,7 +3778,7 @@
       ParseOptionalCommaAlign(Alignment, AteExtraComma))
     return true;
 
-  if (!isa<PointerType>(Val->getType()) ||
+  if (!Val->getType()->isPointerTy() ||
       !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
     return Error(Loc, "load operand must be a pointer to a first class type");
 
@@ -3799,7 +3799,7 @@
       ParseOptionalCommaAlign(Alignment, AteExtraComma))
     return true;
 
-  if (!isa<PointerType>(Ptr->getType()))
+  if (!Ptr->getType()->isPointerTy())
     return Error(PtrLoc, "store operand must be a pointer");
   if (!Val->getType()->isFirstClassType())
     return Error(Loc, "store operand must be a first class value");
@@ -3821,7 +3821,7 @@
       ParseUInt32(Element, EltLoc))
     return true;
 
-  if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
+  if (!Val->getType()->isStructTy() && !Val->getType()->isArrayTy())
     return Error(ValLoc, "getresult inst requires an aggregate operand");
   if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
     return Error(EltLoc, "invalid getresult index for value");
@@ -3838,7 +3838,7 @@
 
   if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
 
-  if (!isa<PointerType>(Ptr->getType()))
+  if (!Ptr->getType()->isPointerTy())
     return Error(Loc, "base of getelementptr must be a pointer");
 
   SmallVector<Value*, 16> Indices;
@@ -3849,7 +3849,7 @@
       break;
     }
     if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
-    if (!isa<IntegerType>(Val->getType()))
+    if (!Val->getType()->isIntegerTy())
       return Error(EltLoc, "getelementptr index must be an integer");
     Indices.push_back(Val);
   }
diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index cebfbf6..4ac5069 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -963,12 +963,12 @@
       V = Constant::getNullValue(CurTy);
       break;
     case bitc::CST_CODE_INTEGER:   // INTEGER: [intval]
-      if (!isa<IntegerType>(CurTy) || Record.empty())
+      if (!CurTy->isIntegerTy() || Record.empty())
         return Error("Invalid CST_INTEGER record");
       V = ConstantInt::get(CurTy, DecodeSignRotatedValue(Record[0]));
       break;
     case bitc::CST_CODE_WIDE_INTEGER: {// WIDE_INTEGER: [n x intval]
-      if (!isa<IntegerType>(CurTy) || Record.empty())
+      if (!CurTy->isIntegerTy() || Record.empty())
         return Error("Invalid WIDE_INTEGER record");
 
       unsigned NumWords = Record.size();
@@ -1407,7 +1407,7 @@
       if (Record.size() < 6)
         return Error("Invalid MODULE_CODE_GLOBALVAR record");
       const Type *Ty = getTypeByID(Record[0]);
-      if (!isa<PointerType>(Ty))
+      if (!Ty->isPointerTy())
         return Error("Global not a pointer type!");
       unsigned AddressSpace = cast<PointerType>(Ty)->getAddressSpace();
       Ty = cast<PointerType>(Ty)->getElementType();
@@ -1450,7 +1450,7 @@
       if (Record.size() < 8)
         return Error("Invalid MODULE_CODE_FUNCTION record");
       const Type *Ty = getTypeByID(Record[0]);
-      if (!isa<PointerType>(Ty))
+      if (!Ty->isPointerTy())
         return Error("Function not a pointer type!");
       const FunctionType *FTy =
         dyn_cast<FunctionType>(cast<PointerType>(Ty)->getElementType());
@@ -1491,7 +1491,7 @@
       if (Record.size() < 3)
         return Error("Invalid MODULE_ALIAS record");
       const Type *Ty = getTypeByID(Record[0]);
-      if (!isa<PointerType>(Ty))
+      if (!Ty->isPointerTy())
         return Error("Function not a pointer type!");
 
       GlobalAlias *NewGA = new GlobalAlias(Ty, GetDecodedLinkage(Record[2]),
@@ -1932,7 +1932,7 @@
 
         const Type *ReturnType = F->getReturnType();
         if (Vs.size() > 1 ||
-            (isa<StructType>(ReturnType) &&
+            (ReturnType->isStructTy() &&
              (Vs.empty() || Vs[0]->getType() != ReturnType))) {
           Value *RV = UndefValue::get(ReturnType);
           for (unsigned i = 0, e = Vs.size(); i != e; ++i) {
diff --git a/lib/Bitcode/Writer/ValueEnumerator.cpp b/lib/Bitcode/Writer/ValueEnumerator.cpp
index 595497f..b56c862 100644
--- a/lib/Bitcode/Writer/ValueEnumerator.cpp
+++ b/lib/Bitcode/Writer/ValueEnumerator.cpp
@@ -27,7 +27,7 @@
 }
 
 static bool isIntegerValue(const std::pair<const Value*, unsigned> &V) {
-  return isa<IntegerType>(V.first->getType());
+  return V.first->getType()->isIntegerTy();
 }
 
 static bool CompareByFrequency(const std::pair<const llvm::Type*,
diff --git a/lib/CodeGen/ScheduleDAGInstrs.cpp b/lib/CodeGen/ScheduleDAGInstrs.cpp
index 56dd533..badf34e 100644
--- a/lib/CodeGen/ScheduleDAGInstrs.cpp
+++ b/lib/CodeGen/ScheduleDAGInstrs.cpp
@@ -72,7 +72,7 @@
     } else {
       return V;
     }
-    assert(isa<IntegerType>(V->getType()) && "Unexpected operand type!");
+    assert(V->getType()->isIntegerTy() && "Unexpected operand type!");
   } while (1);
 }
 
@@ -87,7 +87,7 @@
       break;
     const Value *O = getUnderlyingObjectFromInt(cast<User>(V)->getOperand(0));
     // If that succeeded in finding a pointer, continue the search.
-    if (!isa<PointerType>(O->getType()))
+    if (!O->getType()->isPointerTy())
       break;
     V = O;
   } while (1);
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 43cf37e..30591d2 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1345,7 +1345,7 @@
 }
 
 SDValue SelectionDAG::getSrcValue(const Value *V) {
-  assert((!V || isa<PointerType>(V->getType())) &&
+  assert((!V || V->getType()->isPointerTy()) &&
          "SrcValue is not a pointer?");
 
   FoldingSetNodeID ID;
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 85ecb95..15f17b6 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -680,7 +680,7 @@
                                 getCurDebugLoc());
     }
 
-    if (isa<StructType>(C->getType()) || isa<ArrayType>(C->getType())) {
+    if (C->getType()->isStructTy() || C->getType()->isArrayTy()) {
       assert((isa<ConstantAggregateZero>(C) || isa<UndefValue>(C)) &&
              "Unknown struct or array constant!");
 
@@ -2080,7 +2080,7 @@
 void SelectionDAGBuilder::visitFSub(User &I) {
   // -0.0 - X --> fneg
   const Type *Ty = I.getType();
-  if (isa<VectorType>(Ty)) {
+  if (Ty->isVectorTy()) {
     if (ConstantVector *CV = dyn_cast<ConstantVector>(I.getOperand(0))) {
       const VectorType *DestTy = cast<VectorType>(I.getType());
       const Type *ElTy = DestTy->getElementType();
@@ -2117,7 +2117,7 @@
 void SelectionDAGBuilder::visitShift(User &I, unsigned Opcode) {
   SDValue Op1 = getValue(I.getOperand(0));
   SDValue Op2 = getValue(I.getOperand(1));
-  if (!isa<VectorType>(I.getType()) &&
+  if (!I.getType()->isVectorTy() &&
       Op2.getValueType() != TLI.getShiftAmountTy()) {
     // If the operand is smaller than the shift count type, promote it.
     EVT PTy = TLI.getPointerTy();
@@ -4287,8 +4287,8 @@
     // Check for a truly no-op bitcast.
     if (isa<BitCastInst>(U) &&
         (U->getOperand(0)->getType() == U->getType() ||
-         (isa<PointerType>(U->getOperand(0)->getType()) &&
-          isa<PointerType>(U->getType()))))
+         (U->getOperand(0)->getType()->isPointerTy() &&
+          U->getType()->isPointerTy())))
       continue;
     // Otherwise it's not a true no-op.
     return false;
@@ -4541,9 +4541,9 @@
     return false;
 
   Value *LHS = I.getOperand(1), *RHS = I.getOperand(2);
-  if (!isa<PointerType>(LHS->getType()) || !isa<PointerType>(RHS->getType()) ||
-      !isa<IntegerType>(I.getOperand(3)->getType()) ||
-      !isa<IntegerType>(I.getType()))
+  if (!LHS->getType()->isPointerTy() || !RHS->getType()->isPointerTy() ||
+      !I.getOperand(3)->getType()->isIntegerTy() ||
+      !I.getType()->isIntegerTy())
     return false;
 
   ConstantInt *Size = dyn_cast<ConstantInt>(I.getOperand(3));
diff --git a/lib/ExecutionEngine/ExecutionEngine.cpp b/lib/ExecutionEngine/ExecutionEngine.cpp
index 6db3ef9..b2e2a04 100644
--- a/lib/ExecutionEngine/ExecutionEngine.cpp
+++ b/lib/ExecutionEngine/ExecutionEngine.cpp
@@ -344,7 +344,7 @@
    }
    // FALLS THROUGH
   case 0:
-   if (!isa<IntegerType>(FTy->getReturnType()) &&
+   if (!FTy->getReturnType()->isIntegerTy() &&
        !FTy->getReturnType()->isVoidTy()) {
      llvm_report_error("Invalid return type of main() supplied");
    }
@@ -614,7 +614,7 @@
           GV.IntVal.doubleToBits(GV.DoubleVal);
           break;
         case Type::PointerTyID:
-          assert(isa<PointerType>(DestTy) && "Invalid bitcast");
+          assert(DestTy->isPointerTy() && "Invalid bitcast");
           break; // getConstantValue(Op0)  above already converted it
       }
       return GV;
diff --git a/lib/ExecutionEngine/Interpreter/Execution.cpp b/lib/ExecutionEngine/Interpreter/Execution.cpp
index e234cf1..a2aad5a 100644
--- a/lib/ExecutionEngine/Interpreter/Execution.cpp
+++ b/lib/ExecutionEngine/Interpreter/Execution.cpp
@@ -761,7 +761,7 @@
 GenericValue Interpreter::executeGEPOperation(Value *Ptr, gep_type_iterator I,
                                               gep_type_iterator E,
                                               ExecutionContext &SF) {
-  assert(isa<PointerType>(Ptr->getType()) &&
+  assert(Ptr->getType()->isPointerTy() &&
          "Cannot getElementOffset of a nonpointer type!");
 
   uint64_t Total = 0;
@@ -1031,7 +1031,7 @@
                                               ExecutionContext &SF) {
   uint32_t DBitWidth = cast<IntegerType>(DstTy)->getBitWidth();
   GenericValue Dest, Src = getOperandValue(SrcVal, SF);
-  assert(isa<PointerType>(SrcVal->getType()) && "Invalid PtrToInt instruction");
+  assert(SrcVal->getType()->isPointerTy() && "Invalid PtrToInt instruction");
 
   Dest.IntVal = APInt(DBitWidth, (intptr_t) Src.PointerVal);
   return Dest;
@@ -1040,7 +1040,7 @@
 GenericValue Interpreter::executeIntToPtrInst(Value *SrcVal, const Type *DstTy,
                                               ExecutionContext &SF) {
   GenericValue Dest, Src = getOperandValue(SrcVal, SF);
-  assert(isa<PointerType>(DstTy) && "Invalid PtrToInt instruction");
+  assert(DstTy->isPointerTy() && "Invalid PtrToInt instruction");
 
   uint32_t PtrSize = TD.getPointerSizeInBits();
   if (PtrSize != Src.IntVal.getBitWidth())
@@ -1055,8 +1055,8 @@
   
   const Type *SrcTy = SrcVal->getType();
   GenericValue Dest, Src = getOperandValue(SrcVal, SF);
-  if (isa<PointerType>(DstTy)) {
-    assert(isa<PointerType>(SrcTy) && "Invalid BitCast");
+  if (DstTy->isPointerTy()) {
+    assert(SrcTy->isPointerTy() && "Invalid BitCast");
     Dest.PointerVal = Src.PointerVal;
   } else if (DstTy->isIntegerTy()) {
     if (SrcTy->isFloatTy()) {
diff --git a/lib/ExecutionEngine/JIT/JIT.cpp b/lib/ExecutionEngine/JIT/JIT.cpp
index 18a996e..dd74d73 100644
--- a/lib/ExecutionEngine/JIT/JIT.cpp
+++ b/lib/ExecutionEngine/JIT/JIT.cpp
@@ -415,8 +415,8 @@
     switch (ArgValues.size()) {
     case 3:
       if (FTy->getParamType(0)->isIntegerTy(32) &&
-          isa<PointerType>(FTy->getParamType(1)) &&
-          isa<PointerType>(FTy->getParamType(2))) {
+          FTy->getParamType(1)->isPointerTy() &&
+          FTy->getParamType(2)->isPointerTy()) {
         int (*PF)(int, char **, const char **) =
           (int(*)(int, char **, const char **))(intptr_t)FPtr;
 
@@ -430,7 +430,7 @@
       break;
     case 2:
       if (FTy->getParamType(0)->isIntegerTy(32) &&
-          isa<PointerType>(FTy->getParamType(1))) {
+          FTy->getParamType(1)->isPointerTy()) {
         int (*PF)(int, char **) = (int(*)(int, char **))(intptr_t)FPtr;
 
         // Call the function.
diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index c1c1d80..c753555 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -385,8 +385,8 @@
     
     // If this isn't a struct or array type, remove it from our set of types
     // to name. This simplifies emission later.
-    if (!isa<StructType>(I->second) && !isa<OpaqueType>(I->second) &&
-        !isa<ArrayType>(I->second)) {
+    if (!I->second->isStructTy() && !isa<OpaqueType>(I->second) &&
+        !I->second->isArrayTy()) {
       TST.remove(I);
     } else {
       // If this is not used, remove it from the symbol table.
@@ -405,7 +405,7 @@
   unsigned RenameCounter = 0;
   for (std::set<const Type *>::const_iterator I = UT.begin(), E = UT.end();
        I != E; ++I)
-    if (isa<StructType>(*I) || isa<ArrayType>(*I)) {
+    if ((*I)->isStructTy() || (*I)->isArrayTy()) {
       while (M.addTypeName("unnamed"+utostr(RenameCounter), *I))
         ++RenameCounter;
       Changed = true;
@@ -470,7 +470,7 @@
       FunctionInnards << ", ";
     const Type *ArgTy = *I;
     if (PAL.paramHasAttr(Idx, Attribute::ByVal)) {
-      assert(isa<PointerType>(ArgTy));
+      assert(ArgTy->isPointerTy());
       ArgTy = cast<PointerType>(ArgTy)->getElementType();
     }
     printType(FunctionInnards, ArgTy,
@@ -493,7 +493,7 @@
 CWriter::printSimpleType(formatted_raw_ostream &Out, const Type *Ty,
                          bool isSigned,
                          const std::string &NameSoFar) {
-  assert((Ty->isPrimitiveType() || Ty->isIntegerTy() || isa<VectorType>(Ty)) && 
+  assert((Ty->isPrimitiveType() || Ty->isIntegerTy() || Ty->isVectorTy()) && 
          "Invalid type for printSimpleType");
   switch (Ty->getTypeID()) {
   case Type::VoidTyID:   return Out << "void " << NameSoFar;
@@ -540,7 +540,7 @@
 std::ostream &
 CWriter::printSimpleType(std::ostream &Out, const Type *Ty, bool isSigned,
                          const std::string &NameSoFar) {
-  assert((Ty->isPrimitiveType() || Ty->isIntegerTy() || isa<VectorType>(Ty)) && 
+  assert((Ty->isPrimitiveType() || Ty->isIntegerTy() || Ty->isVectorTy()) && 
          "Invalid type for printSimpleType");
   switch (Ty->getTypeID()) {
   case Type::VoidTyID:   return Out << "void " << NameSoFar;
@@ -591,7 +591,7 @@
                                 const Type *Ty,
                                 bool isSigned, const std::string &NameSoFar,
                                 bool IgnoreName, const AttrListPtr &PAL) {
-  if (Ty->isPrimitiveType() || Ty->isIntegerTy() || isa<VectorType>(Ty)) {
+  if (Ty->isPrimitiveType() || Ty->isIntegerTy() || Ty->isVectorTy()) {
     printSimpleType(Out, Ty, isSigned, NameSoFar);
     return Out;
   }
@@ -612,7 +612,7 @@
            E = FTy->param_end(); I != E; ++I) {
       const Type *ArgTy = *I;
       if (PAL.paramHasAttr(Idx, Attribute::ByVal)) {
-        assert(isa<PointerType>(ArgTy));
+        assert(ArgTy->isPointerTy());
         ArgTy = cast<PointerType>(ArgTy)->getElementType();
       }
       if (I != FTy->param_begin())
@@ -653,8 +653,8 @@
     const PointerType *PTy = cast<PointerType>(Ty);
     std::string ptrName = "*" + NameSoFar;
 
-    if (isa<ArrayType>(PTy->getElementType()) ||
-        isa<VectorType>(PTy->getElementType()))
+    if (PTy->getElementType()->isArrayTy() ||
+        PTy->getElementType()->isVectorTy())
       ptrName = "(" + ptrName + ")";
 
     if (!PAL.isEmpty())
@@ -694,7 +694,7 @@
 std::ostream &CWriter::printType(std::ostream &Out, const Type *Ty,
                                  bool isSigned, const std::string &NameSoFar,
                                  bool IgnoreName, const AttrListPtr &PAL) {
-  if (Ty->isPrimitiveType() || Ty->isIntegerTy() || isa<VectorType>(Ty)) {
+  if (Ty->isPrimitiveType() || Ty->isIntegerTy() || Ty->isVectorTy()) {
     printSimpleType(Out, Ty, isSigned, NameSoFar);
     return Out;
   }
@@ -715,7 +715,7 @@
            E = FTy->param_end(); I != E; ++I) {
       const Type *ArgTy = *I;
       if (PAL.paramHasAttr(Idx, Attribute::ByVal)) {
-        assert(isa<PointerType>(ArgTy));
+        assert(ArgTy->isPointerTy());
         ArgTy = cast<PointerType>(ArgTy)->getElementType();
       }
       if (I != FTy->param_begin())
@@ -756,8 +756,8 @@
     const PointerType *PTy = cast<PointerType>(Ty);
     std::string ptrName = "*" + NameSoFar;
 
-    if (isa<ArrayType>(PTy->getElementType()) ||
-        isa<VectorType>(PTy->getElementType()))
+    if (PTy->getElementType()->isArrayTy() ||
+        PTy->getElementType()->isVectorTy())
       ptrName = "(" + ptrName + ")";
 
     if (!PAL.isEmpty())
@@ -1144,7 +1144,7 @@
     Out << "((";
     printType(Out, CPV->getType()); // sign doesn't matter
     Out << ")/*UNDEF*/";
-    if (!isa<VectorType>(CPV->getType())) {
+    if (!CPV->getType()->isVectorTy()) {
       Out << "0)";
     } else {
       Out << "{})";
@@ -1660,7 +1660,7 @@
 
   // If the operand was a pointer, convert to a large integer type.
   const Type* OpTy = Operand->getType();
-  if (isa<PointerType>(OpTy))
+  if (OpTy->isPointerTy())
     OpTy = TD->getIntPtrType(Operand->getContext());
   
   Out << "((";
@@ -2102,10 +2102,10 @@
           // complete.  If the value is an aggregate, print out { 0 }, and let
           // the compiler figure out the rest of the zeros.
           Out << " = " ;
-          if (isa<StructType>(I->getInitializer()->getType()) ||
-              isa<VectorType>(I->getInitializer()->getType())) {
+          if (I->getInitializer()->getType()->isStructTy() ||
+              I->getInitializer()->getType()->isVectorTy()) {
             Out << "{ 0 }";
-          } else if (isa<ArrayType>(I->getInitializer()->getType())) {
+          } else if (I->getInitializer()->getType()->isArrayTy()) {
             // As with structs and vectors, but with an extra set of braces
             // because arrays are wrapped in structs.
             Out << "{ { 0 } }";
@@ -2274,7 +2274,7 @@
   //
   Out << "/* Structure contents */\n";
   for (I = TST.begin(); I != End; ++I)
-    if (isa<StructType>(I->second) || isa<ArrayType>(I->second))
+    if (I->second->isStructTy() || I->second->isArrayTy())
       // Only print out used types!
       printContainedStructs(I->second, StructPrinted);
 }
@@ -2287,7 +2287,7 @@
 void CWriter::printContainedStructs(const Type *Ty,
                                     std::set<const Type*> &StructPrinted) {
   // Don't walk through pointers.
-  if (isa<PointerType>(Ty) || Ty->isPrimitiveType() || Ty->isIntegerTy())
+  if (Ty->isPointerTy() || Ty->isPrimitiveType() || Ty->isIntegerTy())
     return;
   
   // Print all contained types first.
@@ -2295,7 +2295,7 @@
        E = Ty->subtype_end(); I != E; ++I)
     printContainedStructs(*I, StructPrinted);
   
-  if (isa<StructType>(Ty) || isa<ArrayType>(Ty)) {
+  if (Ty->isStructTy() || Ty->isArrayTy()) {
     // Check to see if we have already printed this struct.
     if (StructPrinted.insert(Ty).second) {
       // Print structure type out.
@@ -2383,7 +2383,7 @@
       if (PrintedArg) FunctionInnards << ", ";
       const Type *ArgTy = *I;
       if (PAL.paramHasAttr(Idx, Attribute::ByVal)) {
-        assert(isa<PointerType>(ArgTy));
+        assert(ArgTy->isPointerTy());
         ArgTy = cast<PointerType>(ArgTy)->getElementType();
       }
       printType(FunctionInnards, ArgTy,
@@ -2714,7 +2714,7 @@
 
 void CWriter::visitBinaryOperator(Instruction &I) {
   // binary instructions, shift instructions, setCond instructions.
-  assert(!isa<PointerType>(I.getType()));
+  assert(!I.getType()->isPointerTy());
 
   // We must cast the results of binary operations which might be promoted.
   bool needsCast = false;
@@ -3490,7 +3490,7 @@
     // exposed, like a global, avoid emitting (&foo)[0], just emit foo instead.
     if (isAddressExposed(Ptr)) {
       writeOperandInternal(Ptr, Static);
-    } else if (I != E && isa<StructType>(*I)) {
+    } else if (I != E && (*I)->isStructTy()) {
       // If we didn't already emit the first operand, see if we can print it as
       // P->f instead of "P[0].f"
       writeOperand(Ptr);
@@ -3505,13 +3505,13 @@
   }
 
   for (; I != E; ++I) {
-    if (isa<StructType>(*I)) {
+    if ((*I)->isStructTy()) {
       Out << ".field" << cast<ConstantInt>(I.getOperand())->getZExtValue();
-    } else if (isa<ArrayType>(*I)) {
+    } else if ((*I)->isArrayTy()) {
       Out << ".array[";
       writeOperandWithCast(I.getOperand(), Instruction::GetElementPtr);
       Out << ']';
-    } else if (!isa<VectorType>(*I)) {
+    } else if (!(*I)->isVectorTy()) {
       Out << '[';
       writeOperandWithCast(I.getOperand(), Instruction::GetElementPtr);
       Out << ']';
@@ -3669,7 +3669,7 @@
        i != e; ++i) {
     const Type *IndexedTy =
       ExtractValueInst::getIndexedType(IVI.getOperand(0)->getType(), b, i+1);
-    if (isa<ArrayType>(IndexedTy))
+    if (IndexedTy->isArrayTy())
       Out << ".array[" << *i << "]";
     else
       Out << ".field" << *i;
@@ -3690,7 +3690,7 @@
          i != e; ++i) {
       const Type *IndexedTy =
         ExtractValueInst::getIndexedType(EVI.getOperand(0)->getType(), b, i+1);
-      if (isa<ArrayType>(IndexedTy))
+      if (IndexedTy->isArrayTy())
         Out << ".array[" << *i << "]";
       else
         Out << ".field" << *i;
diff --git a/lib/Target/MSIL/MSILWriter.cpp b/lib/Target/MSIL/MSILWriter.cpp
index 3330d09..6f94800 100644
--- a/lib/Target/MSIL/MSILWriter.cpp
+++ b/lib/Target/MSIL/MSILWriter.cpp
@@ -57,7 +57,7 @@
   TypeSymbolTable& Table = M.getTypeSymbolTable();
   std::set<const Type *> Types = getAnalysis<FindUsedTypes>().getTypes();
   for (TypeSymbolTable::iterator I = Table.begin(), E = Table.end(); I!=E; ) {
-    if (!isa<StructType>(I->second) && !isa<OpaqueType>(I->second))
+    if (!I->second->isStructTy() && !isa<OpaqueType>(I->second))
       Table.remove(I++);
     else {
       std::set<const Type *>::iterator T = Types.find(I->second);
@@ -1459,7 +1459,7 @@
   for (std::set<const Type*>::const_iterator
        UI = UsedTypes->begin(), UE = UsedTypes->end(); UI!=UE; ++UI) {
     const Type* Ty = *UI;
-    if (isa<ArrayType>(Ty) || isa<VectorType>(Ty) || isa<StructType>(Ty))
+    if (Ty->isArrayTy() || Ty->isVectorTy() || Ty->isStructTy())
       Name = getTypeName(Ty, false, true);
     // Type with no need to declare.
     else continue;
diff --git a/lib/Target/TargetData.cpp b/lib/Target/TargetData.cpp
index 295b30f..9a16808 100644
--- a/lib/Target/TargetData.cpp
+++ b/lib/Target/TargetData.cpp
@@ -580,7 +580,7 @@
 uint64_t TargetData::getIndexedOffset(const Type *ptrTy, Value* const* Indices,
                                       unsigned NumIndices) const {
   const Type *Ty = ptrTy;
-  assert(isa<PointerType>(Ty) && "Illegal argument for getIndexedOffset()");
+  assert(Ty->isPointerTy() && "Illegal argument for getIndexedOffset()");
   uint64_t Result = 0;
 
   generic_gep_type_iterator<Value* const*>
diff --git a/lib/Transforms/IPO/ArgumentPromotion.cpp b/lib/Transforms/IPO/ArgumentPromotion.cpp
index 325d353..e769d17 100644
--- a/lib/Transforms/IPO/ArgumentPromotion.cpp
+++ b/lib/Transforms/IPO/ArgumentPromotion.cpp
@@ -124,7 +124,7 @@
   unsigned ArgNo = 0;
   for (Function::arg_iterator I = F->arg_begin(), E = F->arg_end();
        I != E; ++I, ++ArgNo)
-    if (isa<PointerType>(I->getType()))
+    if (I->getType()->isPointerTy())
       PointerArgs.push_back(std::pair<Argument*, unsigned>(I, ArgNo));
   if (PointerArgs.empty()) return 0;
 
@@ -673,7 +673,7 @@
                  IE = SI->end(); II != IE; ++II) {
               // Use i32 to index structs, and i64 for others (pointers/arrays).
               // This satisfies GEP constraints.
-              const Type *IdxTy = (isa<StructType>(ElTy) ?
+              const Type *IdxTy = (ElTy->isStructTy() ?
                     Type::getInt32Ty(F->getContext()) : 
                     Type::getInt64Ty(F->getContext()));
               Ops.push_back(ConstantInt::get(IdxTy, *II));
diff --git a/lib/Transforms/IPO/DeadArgumentElimination.cpp b/lib/Transforms/IPO/DeadArgumentElimination.cpp
index 1749b1e..f386ed7 100644
--- a/lib/Transforms/IPO/DeadArgumentElimination.cpp
+++ b/lib/Transforms/IPO/DeadArgumentElimination.cpp
@@ -796,7 +796,7 @@
         // Replace by null for now.
         Call->replaceAllUsesWith(Constant::getNullValue(Call->getType()));
       } else {
-        assert(isa<StructType>(RetTy) &&
+        assert(RetTy->isStructTy() &&
                "Return type changed, but not into a void. The old return type"
                " must have been a struct!");
         Instruction *InsertPt = Call;
@@ -870,7 +870,7 @@
         if (NFTy->getReturnType() == Type::getVoidTy(F->getContext())) {
           RetVal = 0;
         } else {
-          assert (isa<StructType>(RetTy));
+          assert (RetTy->isStructTy());
           // The original return value was a struct, insert
           // extractvalue/insertvalue chains to extract only the values we need
           // to return and insert them into our new result.
diff --git a/lib/Transforms/IPO/FunctionAttrs.cpp b/lib/Transforms/IPO/FunctionAttrs.cpp
index 64a6d78..298d5cf 100644
--- a/lib/Transforms/IPO/FunctionAttrs.cpp
+++ b/lib/Transforms/IPO/FunctionAttrs.cpp
@@ -175,7 +175,7 @@
             for (CallSite::arg_iterator CI = CS.arg_begin(), CE = CS.arg_end();
                  CI != CE; ++CI) {
               Value *Arg = *CI;
-              if (isa<PointerType>(Arg->getType()) && !PointsToLocalMemory(Arg))
+              if (Arg->getType()->isPointerTy() && !PointsToLocalMemory(Arg))
                 // Writes memory.  Just give up.
                 return false;
             }
@@ -257,7 +257,7 @@
       continue;
 
     for (Function::arg_iterator A = F->arg_begin(), E = F->arg_end(); A!=E; ++A)
-      if (isa<PointerType>(A->getType()) && !A->hasNoCaptureAttr() &&
+      if (A->getType()->isPointerTy() && !A->hasNoCaptureAttr() &&
           !PointerMayBeCaptured(A, true, /*StoreCaptures=*/false)) {
         A->addAttr(Attribute::NoCapture);
         ++NumNoCapture;
@@ -362,7 +362,7 @@
 
     // We annotate noalias return values, which are only applicable to 
     // pointer types.
-    if (!isa<PointerType>(F->getReturnType()))
+    if (!F->getReturnType()->isPointerTy())
       continue;
 
     if (!IsFunctionMallocLike(F, SCCNodes))
@@ -372,7 +372,7 @@
   bool MadeChange = false;
   for (unsigned i = 0, e = SCC.size(); i != e; ++i) {
     Function *F = SCC[i]->getFunction();
-    if (F->doesNotAlias(0) || !isa<PointerType>(F->getReturnType()))
+    if (F->doesNotAlias(0) || !F->getReturnType()->isPointerTy())
       continue;
 
     F->setDoesNotAlias(0);
diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp
index df060eb..d4aaf9e 100644
--- a/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/lib/Transforms/IPO/GlobalOpt.cpp
@@ -303,7 +303,7 @@
           SubInit = ConstantFoldLoadThroughGEPConstantExpr(Init, CE);
         Changed |= CleanupConstantGlobalUsers(CE, SubInit);
       } else if (CE->getOpcode() == Instruction::BitCast && 
-                 isa<PointerType>(CE->getType())) {
+                 CE->getType()->isPointerTy()) {
         // Pointer cast, delete any stores and memsets to the global.
         Changed |= CleanupConstantGlobalUsers(CE, 0);
       }
@@ -431,7 +431,7 @@
       else if (const VectorType *SubVectorTy = dyn_cast<VectorType>(*GEPI))
         NumElements = SubVectorTy->getNumElements();
       else {
-        assert(isa<StructType>(*GEPI) &&
+        assert((*GEPI)->isStructTy() &&
                "Indexed GEP type is not array, vector, or struct!");
         continue;
       }
@@ -1556,7 +1556,7 @@
   // only has one (non-null) value stored into it, then we can optimize any
   // users of the loaded value (often calls and loads) that would trap if the
   // value was null.
-  if (isa<PointerType>(GV->getInitializer()->getType()) &&
+  if (GV->getInitializer()->getType()->isPointerTy() &&
       GV->getInitializer()->isNullValue()) {
     if (Constant *SOVC = dyn_cast<Constant>(StoredOnceVal)) {
       if (GV->getInitializer()->getType() != SOVC->getType())
@@ -1591,7 +1591,7 @@
   // where v1 and v2 both require constant pool loads, a big loss.
   if (GVElType == Type::getInt1Ty(GV->getContext()) ||
       GVElType->isFloatingPointTy() ||
-      isa<PointerType>(GVElType) || isa<VectorType>(GVElType))
+      GVElType->isPointerTy() || GVElType->isVectorTy())
     return false;
   
   // Walk the use list of the global seeing if all the uses are load or store.
@@ -2148,7 +2148,7 @@
     Elts[CI->getZExtValue()] =
       EvaluateStoreInto(Elts[CI->getZExtValue()], Val, Addr, OpNo+1);
     
-    if (isa<ArrayType>(Init->getType()))
+    if (Init->getType()->isArrayTy())
       return ConstantArray::get(cast<ArrayType>(InitTy), Elts);
     else
       return ConstantVector::get(&Elts[0], Elts.size());
diff --git a/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp b/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
index 5e47953..8ddaa16 100644
--- a/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
+++ b/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
@@ -1618,7 +1618,7 @@
     // (A & (C0?-1:0)) | (B & ~(C0?-1:0)) ->  C0 ? A : B, and commuted variants.
     // Don't do this for vector select idioms, the code generator doesn't handle
     // them well yet.
-    if (!isa<VectorType>(I.getType())) {
+    if (!I.getType()->isVectorTy()) {
       if (Instruction *Match = MatchSelectFromAndOr(A, B, C, D))
         return Match;
       if (Instruction *Match = MatchSelectFromAndOr(B, A, D, C))
@@ -1755,7 +1755,7 @@
   // purpose is to compute bits we don't care about.
   if (SimplifyDemandedInstructionBits(I))
     return &I;
-  if (isa<VectorType>(I.getType()))
+  if (I.getType()->isVectorTy())
     if (isa<ConstantAggregateZero>(Op1))
       return ReplaceInstUsesWith(I, Op0);  // X ^ <0,0> -> X
 
diff --git a/lib/Transforms/InstCombine/InstCombineCalls.cpp b/lib/Transforms/InstCombine/InstCombineCalls.cpp
index d7efdcf..b944504 100644
--- a/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -831,7 +831,7 @@
   const Type *OldRetTy = Caller->getType();
   const Type *NewRetTy = FT->getReturnType();
 
-  if (isa<StructType>(NewRetTy))
+  if (NewRetTy->isStructTy())
     return false; // TODO: Handle multiple return values.
 
   // Check to see if we are changing the return type...
@@ -839,9 +839,9 @@
     if (Callee->isDeclaration() &&
         // Conversion is ok if changing from one pointer type to another or from
         // a pointer to an integer of the same size.
-        !((isa<PointerType>(OldRetTy) || !TD ||
+        !((OldRetTy->isPointerTy() || !TD ||
            OldRetTy == TD->getIntPtrType(Caller->getContext())) &&
-          (isa<PointerType>(NewRetTy) || !TD ||
+          (NewRetTy->isPointerTy() || !TD ||
            NewRetTy == TD->getIntPtrType(Caller->getContext()))))
       return false;   // Cannot transform this return value.
 
@@ -888,9 +888,9 @@
     // Converting from one pointer type to another or between a pointer and an
     // integer of the same size is safe even if we do not have a body.
     bool isConvertible = ActTy == ParamTy ||
-      (TD && ((isa<PointerType>(ParamTy) ||
+      (TD && ((ParamTy->isPointerTy() ||
       ParamTy == TD->getIntPtrType(Caller->getContext())) &&
-              (isa<PointerType>(ActTy) ||
+              (ActTy->isPointerTy() ||
               ActTy == TD->getIntPtrType(Caller->getContext()))));
     if (Callee->isDeclaration() && !isConvertible) return false;
   }
diff --git a/lib/Transforms/InstCombine/InstCombineCasts.cpp b/lib/Transforms/InstCombine/InstCombineCasts.cpp
index bb4a0e9..a68fc6d 100644
--- a/lib/Transforms/InstCombine/InstCombineCasts.cpp
+++ b/lib/Transforms/InstCombine/InstCombineCasts.cpp
@@ -272,7 +272,7 @@
   
   // If this is a vector sext from a compare, then we don't want to break the
   // idiom where each element of the extended vector is either zero or all ones.
-  if (opc == Instruction::SExt && isa<CmpInst>(V) && isa<VectorType>(Ty))
+  if (opc == Instruction::SExt && isa<CmpInst>(V) && Ty->isVectorTy())
     return false;
   
   return true;
@@ -303,8 +303,8 @@
   if (isa<PHINode>(Src)) {
     // We don't do this if this would create a PHI node with an illegal type if
     // it is currently legal.
-    if (!isa<IntegerType>(Src->getType()) ||
-        !isa<IntegerType>(CI.getType()) ||
+    if (!Src->getType()->isIntegerTy() ||
+        !CI.getType()->isIntegerTy() ||
         ShouldChangeType(CI.getType(), Src->getType()))
       if (Instruction *NV = FoldOpIntoPhi(CI))
         return NV;
@@ -436,7 +436,7 @@
   // type.   Only do this if the dest type is a simple type, don't convert the
   // expression tree to something weird like i93 unless the source is also
   // strange.
-  if ((isa<VectorType>(DestTy) || ShouldChangeType(SrcTy, DestTy)) &&
+  if ((DestTy->isVectorTy() || ShouldChangeType(SrcTy, DestTy)) &&
       CanEvaluateTruncated(Src, DestTy)) {
       
     // If this cast is a truncate, evaluting in a different type always
@@ -728,7 +728,7 @@
   // expression tree to something weird like i93 unless the source is also
   // strange.
   unsigned BitsToClear;
-  if ((isa<VectorType>(DestTy) || ShouldChangeType(SrcTy, DestTy)) &&
+  if ((DestTy->isVectorTy() || ShouldChangeType(SrcTy, DestTy)) &&
       CanEvaluateZExtd(Src, DestTy, BitsToClear)) { 
     assert(BitsToClear < SrcTy->getScalarSizeInBits() &&
            "Unreasonable BitsToClear");
@@ -936,7 +936,7 @@
   // type.   Only do this if the dest type is a simple type, don't convert the
   // expression tree to something weird like i93 unless the source is also
   // strange.
-  if ((isa<VectorType>(DestTy) || ShouldChangeType(SrcTy, DestTy)) &&
+  if ((DestTy->isVectorTy() || ShouldChangeType(SrcTy, DestTy)) &&
       CanEvaluateSExtd(Src, DestTy)) {
     // Okay, we can transform this!  Insert the new expression now.
     DEBUG(dbgs() << "ICE: EvaluateInDifferentType converting expression type"
@@ -1289,7 +1289,7 @@
       Constant::getNullValue(Type::getInt32Ty(CI.getContext()));
     unsigned NumZeros = 0;
     while (SrcElTy != DstElTy && 
-           isa<CompositeType>(SrcElTy) && !isa<PointerType>(SrcElTy) &&
+           isa<CompositeType>(SrcElTy) && !SrcElTy->isPointerTy() &&
            SrcElTy->getNumContainedTypes() /* not "{}" */) {
       SrcElTy = cast<CompositeType>(SrcElTy)->getTypeAtIndex(ZeroUInt);
       ++NumZeros;
@@ -1304,7 +1304,7 @@
   }
 
   if (const VectorType *DestVTy = dyn_cast<VectorType>(DestTy)) {
-    if (DestVTy->getNumElements() == 1 && !isa<VectorType>(SrcTy)) {
+    if (DestVTy->getNumElements() == 1 && !SrcTy->isVectorTy()) {
       Value *Elem = Builder->CreateBitCast(Src, DestVTy->getElementType());
       return InsertElementInst::Create(UndefValue::get(DestTy), Elem,
                      Constant::getNullValue(Type::getInt32Ty(CI.getContext())));
@@ -1313,7 +1313,7 @@
   }
 
   if (const VectorType *SrcVTy = dyn_cast<VectorType>(SrcTy)) {
-    if (SrcVTy->getNumElements() == 1 && !isa<VectorType>(DestTy)) {
+    if (SrcVTy->getNumElements() == 1 && !DestTy->isVectorTy()) {
       Value *Elem = 
         Builder->CreateExtractElement(Src,
                    Constant::getNullValue(Type::getInt32Ty(CI.getContext())));
@@ -1324,7 +1324,7 @@
   if (ShuffleVectorInst *SVI = dyn_cast<ShuffleVectorInst>(Src)) {
     // Okay, we have (bitcast (shuffle ..)).  Check to see if this is
     // a bitconvert to a vector with the same # elts.
-    if (SVI->hasOneUse() && isa<VectorType>(DestTy) && 
+    if (SVI->hasOneUse() && DestTy->isVectorTy() && 
         cast<VectorType>(DestTy)->getNumElements() ==
               SVI->getType()->getNumElements() &&
         SVI->getType()->getNumElements() ==
@@ -1346,7 +1346,7 @@
     }
   }
   
-  if (isa<PointerType>(SrcTy))
+  if (SrcTy->isPointerTy())
     return commonPointerCastTransforms(CI);
   return commonCastTransforms(CI);
 }
diff --git a/lib/Transforms/InstCombine/InstCombineCompares.cpp b/lib/Transforms/InstCombine/InstCombineCompares.cpp
index 72af80f..5a1cb36 100644
--- a/lib/Transforms/InstCombine/InstCombineCompares.cpp
+++ b/lib/Transforms/InstCombine/InstCombineCompares.cpp
@@ -1988,7 +1988,7 @@
   // values.  If the ptr->ptr cast can be stripped off both arguments, we do so
   // now.
   if (BitCastInst *CI = dyn_cast<BitCastInst>(Op0)) {
-    if (isa<PointerType>(Op0->getType()) && 
+    if (Op0->getType()->isPointerTy() && 
         (isa<Constant>(Op1) || isa<BitCastInst>(Op1))) { 
       // We keep moving the cast from the left operand over to the right
       // operand, where it can often be eliminated completely.
diff --git a/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp b/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
index e6c59c7..0f2a24f 100644
--- a/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
+++ b/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
@@ -87,8 +87,8 @@
 
     const Type *SrcPTy = SrcTy->getElementType();
 
-    if (DestPTy->isIntegerTy() || isa<PointerType>(DestPTy) || 
-         isa<VectorType>(DestPTy)) {
+    if (DestPTy->isIntegerTy() || DestPTy->isPointerTy() || 
+         DestPTy->isVectorTy()) {
       // If the source is an array, the code below will not succeed.  Check to
       // see if a trivial 'gep P, 0, 0' will help matters.  Only do this for
       // constants.
@@ -104,11 +104,11 @@
           }
 
       if (IC.getTargetData() &&
-          (SrcPTy->isIntegerTy() || isa<PointerType>(SrcPTy) || 
-            isa<VectorType>(SrcPTy)) &&
+          (SrcPTy->isIntegerTy() || SrcPTy->isPointerTy() || 
+            SrcPTy->isVectorTy()) &&
           // Do not allow turning this into a load of an integer, which is then
           // casted to a pointer, this pessimizes pointer analysis a lot.
-          (isa<PointerType>(SrcPTy) == isa<PointerType>(LI.getType())) &&
+          (SrcPTy->isPointerTy() == LI.getType()->isPointerTy()) &&
           IC.getTargetData()->getTypeSizeInBits(SrcPTy) ==
                IC.getTargetData()->getTypeSizeInBits(DestPTy)) {
 
@@ -243,7 +243,7 @@
   
   const Type *SrcPTy = SrcTy->getElementType();
 
-  if (!DestPTy->isIntegerTy() && !isa<PointerType>(DestPTy))
+  if (!DestPTy->isIntegerTy() && !DestPTy->isPointerTy())
     return 0;
   
   /// NewGEPIndices - If SrcPTy is an aggregate type, we can emit a "noop gep"
@@ -255,7 +255,7 @@
   // If the source is an array, the code below will not succeed.  Check to
   // see if a trivial 'gep P, 0, 0' will help matters.  Only do this for
   // constants.
-  if (isa<ArrayType>(SrcPTy) || isa<StructType>(SrcPTy)) {
+  if (SrcPTy->isArrayTy() || SrcPTy->isStructTy()) {
     // Index through pointer.
     Constant *Zero = Constant::getNullValue(Type::getInt32Ty(SI.getContext()));
     NewGEPIndices.push_back(Zero);
@@ -277,7 +277,7 @@
     SrcTy = PointerType::get(SrcPTy, SrcTy->getAddressSpace());
   }
 
-  if (!SrcPTy->isIntegerTy() && !isa<PointerType>(SrcPTy))
+  if (!SrcPTy->isIntegerTy() && !SrcPTy->isPointerTy())
     return 0;
   
   // If the pointers point into different address spaces or if they point to
@@ -297,11 +297,11 @@
   Instruction::CastOps opcode = Instruction::BitCast;
   const Type* CastSrcTy = SIOp0->getType();
   const Type* CastDstTy = SrcPTy;
-  if (isa<PointerType>(CastDstTy)) {
+  if (CastDstTy->isPointerTy()) {
     if (CastSrcTy->isIntegerTy())
       opcode = Instruction::IntToPtr;
-  } else if (isa<IntegerType>(CastDstTy)) {
-    if (isa<PointerType>(SIOp0->getType()))
+  } else if (CastDstTy->isIntegerTy()) {
+    if (SIOp0->getType()->isPointerTy())
       opcode = Instruction::PtrToInt;
   }
   
@@ -413,7 +413,7 @@
     // Don't count debug info directives, lest they affect codegen,
     // and we skip pointer-to-pointer bitcasts, which are NOPs.
     if (isa<DbgInfoIntrinsic>(BBI) ||
-        (isa<BitCastInst>(BBI) && isa<PointerType>(BBI->getType()))) {
+        (isa<BitCastInst>(BBI) && BBI->getType()->isPointerTy())) {
       ScanInsts++;
       continue;
     }    
@@ -483,7 +483,7 @@
   do {
     ++BBI;
   } while (isa<DbgInfoIntrinsic>(BBI) ||
-           (isa<BitCastInst>(BBI) && isa<PointerType>(BBI->getType())));
+           (isa<BitCastInst>(BBI) && BBI->getType()->isPointerTy()));
   if (BranchInst *BI = dyn_cast<BranchInst>(BBI))
     if (BI->isUnconditional())
       if (SimplifyStoreAtEndOfBlock(SI))
@@ -544,7 +544,7 @@
     --BBI;
     // Skip over debugging info.
     while (isa<DbgInfoIntrinsic>(BBI) ||
-           (isa<BitCastInst>(BBI) && isa<PointerType>(BBI->getType()))) {
+           (isa<BitCastInst>(BBI) && BBI->getType()->isPointerTy())) {
       if (BBI==OtherBB->begin())
         return false;
       --BBI;
diff --git a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
index 668c34f..380e1f8 100644
--- a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
+++ b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
@@ -76,7 +76,7 @@
         return BinaryOperator::CreateShl(Op0,
                  ConstantInt::get(Op0->getType(), Val.logBase2()));
       }
-    } else if (isa<VectorType>(Op1C->getType())) {
+    } else if (Op1C->getType()->isVectorTy()) {
       if (Op1C->isNullValue())
         return ReplaceInstUsesWith(I, Op1C);
 
@@ -173,7 +173,7 @@
   // If one of the operands of the multiply is a cast from a boolean value, then
   // we know the bool is either zero or one, so this is a 'masking' multiply.
   //   X * Y (where Y is 0 or 1) -> X & (0-Y)
-  if (!isa<VectorType>(I.getType())) {
+  if (!I.getType()->isVectorTy()) {
     // -2 is "-1 << 1" so it is all bits set except the low one.
     APInt Negative2(I.getType()->getPrimitiveSizeInBits(), (uint64_t)-2, true);
     
@@ -204,7 +204,7 @@
       // ANSI says we can drop signals, so we can do this anyway." (from GCC)
       if (Op1F->isExactlyValue(1.0))
         return ReplaceInstUsesWith(I, Op0);  // Eliminate 'mul double %X, 1.0'
-    } else if (isa<VectorType>(Op1C->getType())) {
+    } else if (Op1C->getType()->isVectorTy()) {
       if (ConstantVector *Op1V = dyn_cast<ConstantVector>(Op1C)) {
         // As above, vector X*splat(1.0) -> X in all defined cases.
         if (Constant *Splat = Op1V->getSplatValue()) {
diff --git a/lib/Transforms/InstCombine/InstCombinePHI.cpp b/lib/Transforms/InstCombine/InstCombinePHI.cpp
index bb7632f..fba8354 100644
--- a/lib/Transforms/InstCombine/InstCombinePHI.cpp
+++ b/lib/Transforms/InstCombine/InstCombinePHI.cpp
@@ -371,7 +371,7 @@
 
     // Be careful about transforming integer PHIs.  We don't want to pessimize
     // the code by turning an i32 into an i1293.
-    if (isa<IntegerType>(PN.getType()) && isa<IntegerType>(CastSrcTy)) {
+    if (PN.getType()->isIntegerTy() && CastSrcTy->isIntegerTy()) {
       if (!ShouldChangeType(PN.getType(), CastSrcTy))
         return 0;
     }
@@ -832,7 +832,7 @@
   // it is only used by trunc or trunc(lshr) operations.  If so, we split the
   // PHI into the various pieces being extracted.  This sort of thing is
   // introduced when SROA promotes an aggregate to a single large integer type.
-  if (isa<IntegerType>(PN.getType()) && TD &&
+  if (PN.getType()->isIntegerTy() && TD &&
       !TD->isLegalInteger(PN.getType()->getPrimitiveSizeInBits()))
     if (Instruction *Res = SliceUpIllegalIntegerPHI(PN))
       return Res;
diff --git a/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp b/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
index 5e9a52f..cd41844 100644
--- a/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
+++ b/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
@@ -104,7 +104,7 @@
   assert(Depth <= 6 && "Limit Search Depth");
   uint32_t BitWidth = DemandedMask.getBitWidth();
   const Type *VTy = V->getType();
-  assert((TD || !isa<PointerType>(VTy)) &&
+  assert((TD || !VTy->isPointerTy()) &&
          "SimplifyDemandedBits needs to know bit widths!");
   assert((!TD || TD->getTypeSizeInBits(VTy->getScalarType()) == BitWidth) &&
          (!VTy->isIntOrIntVectorTy() ||
@@ -413,7 +413,7 @@
       } else
         // Don't touch a scalar-to-vector bitcast.
         return 0;
-    } else if (isa<VectorType>(I->getOperand(0)->getType()))
+    } else if (I->getOperand(0)->getType()->isVectorTy())
       // Don't touch a vector-to-scalar bitcast.
       return 0;
 
diff --git a/lib/Transforms/InstCombine/InstCombineVectorOps.cpp b/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
index 20fda1a..a58124d 100644
--- a/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
+++ b/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
@@ -78,7 +78,7 @@
 /// value is already around as a register, for example if it were inserted then
 /// extracted from the vector.
 static Value *FindScalarElement(Value *V, unsigned EltNo) {
-  assert(isa<VectorType>(V->getType()) && "Not looking at a vector?");
+  assert(V->getType()->isVectorTy() && "Not looking at a vector?");
   const VectorType *PTy = cast<VectorType>(V->getType());
   unsigned Width = PTy->getNumElements();
   if (EltNo >= Width)  // Out of range access.
@@ -322,7 +322,7 @@
 /// that computes V and the LHS value of the shuffle.
 static Value *CollectShuffleElements(Value *V, std::vector<Constant*> &Mask,
                                      Value *&RHS) {
-  assert(isa<VectorType>(V->getType()) && 
+  assert(V->getType()->isVectorTy() && 
          (RHS == 0 || V->getType() == RHS->getType()) &&
          "Invalid shuffle!");
   unsigned NumElts = cast<VectorType>(V->getType())->getNumElements();
diff --git a/lib/Transforms/InstCombine/InstructionCombining.cpp b/lib/Transforms/InstCombine/InstructionCombining.cpp
index 96c0342..af9ec5c 100644
--- a/lib/Transforms/InstCombine/InstructionCombining.cpp
+++ b/lib/Transforms/InstCombine/InstructionCombining.cpp
@@ -73,7 +73,7 @@
 /// from 'From' to 'To'.  We don't want to convert from a legal to an illegal
 /// type for example, or from a smaller to a larger illegal type.
 bool InstCombiner::ShouldChangeType(const Type *From, const Type *To) const {
-  assert(isa<IntegerType>(From) && isa<IntegerType>(To));
+  assert(From->isIntegerTy() && To->isIntegerTy());
   
   // If we don't have TD, we don't know if the source/dest are legal.
   if (!TD) return false;
@@ -478,7 +478,7 @@
     bool EndsWithSequential = false;
     for (gep_type_iterator I = gep_type_begin(*Src), E = gep_type_end(*Src);
          I != E; ++I)
-      EndsWithSequential = !isa<StructType>(*I);
+      EndsWithSequential = !(*I)->isStructTy();
 
     // Can we combine the two pointer arithmetics offsets?
     if (EndsWithSequential) {
@@ -578,7 +578,7 @@
       // into:  %t1 = getelementptr [2 x i32]* %str, i32 0, i32 %V; bitcast
       const Type *SrcElTy = StrippedPtrTy->getElementType();
       const Type *ResElTy=cast<PointerType>(PtrOp->getType())->getElementType();
-      if (TD && isa<ArrayType>(SrcElTy) &&
+      if (TD && SrcElTy->isArrayTy() &&
           TD->getTypeAllocSize(cast<ArrayType>(SrcElTy)->getElementType()) ==
           TD->getTypeAllocSize(ResElTy)) {
         Value *Idx[2];
@@ -596,7 +596,7 @@
       //   (where tmp = 8*tmp2) into:
       // getelementptr [100 x double]* %arr, i32 0, i32 %tmp2; bitcast
       
-      if (TD && isa<ArrayType>(SrcElTy) && ResElTy->isIntegerTy(8)) {
+      if (TD && SrcElTy->isArrayTy() && ResElTy->isIntegerTy(8)) {
         uint64_t ArrayEltSize =
             TD->getTypeAllocSize(cast<ArrayType>(SrcElTy)->getElementType());
         
diff --git a/lib/Transforms/Scalar/ABCD.cpp b/lib/Transforms/Scalar/ABCD.cpp
index cf5e8c0..ea8e5c3 100644
--- a/lib/Transforms/Scalar/ABCD.cpp
+++ b/lib/Transforms/Scalar/ABCD.cpp
@@ -505,7 +505,7 @@
       continue;
 
     ICmpInst *ICI = dyn_cast<ICmpInst>(TI->getOperand(0));
-    if (!ICI || !isa<IntegerType>(ICI->getOperand(0)->getType()))
+    if (!ICI || !ICI->getOperand(0)->getType()->isIntegerTy())
       continue;
 
     createConstraintCmpInst(ICI, TI);
@@ -713,7 +713,7 @@
   Value *V_op1 = ICI->getOperand(0);
   Value *V_op2 = ICI->getOperand(1);
 
-  if (!isa<IntegerType>(V_op1->getType()))
+  if (!V_op1->getType()->isIntegerTy())
     return;
 
   Instruction *I_op1 = dyn_cast<Instruction>(V_op1);
diff --git a/lib/Transforms/Scalar/CodeGenPrepare.cpp b/lib/Transforms/Scalar/CodeGenPrepare.cpp
index 21e6f89..7ceda1f 100644
--- a/lib/Transforms/Scalar/CodeGenPrepare.cpp
+++ b/lib/Transforms/Scalar/CodeGenPrepare.cpp
@@ -612,7 +612,7 @@
     // we'd end up sinking both muls.
     if (AddrMode.BaseReg) {
       Value *V = AddrMode.BaseReg;
-      if (isa<PointerType>(V->getType()))
+      if (V->getType()->isPointerTy())
         V = new PtrToIntInst(V, IntPtrTy, "sunkaddr", InsertPt);
       if (V->getType() != IntPtrTy)
         V = CastInst::CreateIntegerCast(V, IntPtrTy, /*isSigned=*/true,
@@ -625,7 +625,7 @@
       Value *V = AddrMode.ScaledReg;
       if (V->getType() == IntPtrTy) {
         // done.
-      } else if (isa<PointerType>(V->getType())) {
+      } else if (V->getType()->isPointerTy()) {
         V = new PtrToIntInst(V, IntPtrTy, "sunkaddr", InsertPt);
       } else if (cast<IntegerType>(IntPtrTy)->getBitWidth() <
                  cast<IntegerType>(V->getType())->getBitWidth()) {
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index 3ce7482..bf46892 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -836,9 +836,9 @@
                                             const TargetData &TD) {
   // If the loaded or stored value is an first class array or struct, don't try
   // to transform them.  We need to be able to bitcast to integer.
-  if (isa<StructType>(LoadTy) || isa<ArrayType>(LoadTy) ||
-      isa<StructType>(StoredVal->getType()) ||
-      isa<ArrayType>(StoredVal->getType()))
+  if (LoadTy->isStructTy() || LoadTy->isArrayTy() ||
+      StoredVal->getType()->isStructTy() ||
+      StoredVal->getType()->isArrayTy())
     return false;
   
   // The store has to be at least as big as the load.
@@ -870,26 +870,26 @@
   
   // If the store and reload are the same size, we can always reuse it.
   if (StoreSize == LoadSize) {
-    if (isa<PointerType>(StoredValTy) && isa<PointerType>(LoadedTy)) {
+    if (StoredValTy->isPointerTy() && LoadedTy->isPointerTy()) {
       // Pointer to Pointer -> use bitcast.
       return new BitCastInst(StoredVal, LoadedTy, "", InsertPt);
     }
     
     // Convert source pointers to integers, which can be bitcast.
-    if (isa<PointerType>(StoredValTy)) {
+    if (StoredValTy->isPointerTy()) {
       StoredValTy = TD.getIntPtrType(StoredValTy->getContext());
       StoredVal = new PtrToIntInst(StoredVal, StoredValTy, "", InsertPt);
     }
     
     const Type *TypeToCastTo = LoadedTy;
-    if (isa<PointerType>(TypeToCastTo))
+    if (TypeToCastTo->isPointerTy())
       TypeToCastTo = TD.getIntPtrType(StoredValTy->getContext());
     
     if (StoredValTy != TypeToCastTo)
       StoredVal = new BitCastInst(StoredVal, TypeToCastTo, "", InsertPt);
     
     // Cast to pointer if the load needs a pointer type.
-    if (isa<PointerType>(LoadedTy))
+    if (LoadedTy->isPointerTy())
       StoredVal = new IntToPtrInst(StoredVal, LoadedTy, "", InsertPt);
     
     return StoredVal;
@@ -901,13 +901,13 @@
   assert(StoreSize >= LoadSize && "CanCoerceMustAliasedValueToLoad fail");
   
   // Convert source pointers to integers, which can be manipulated.
-  if (isa<PointerType>(StoredValTy)) {
+  if (StoredValTy->isPointerTy()) {
     StoredValTy = TD.getIntPtrType(StoredValTy->getContext());
     StoredVal = new PtrToIntInst(StoredVal, StoredValTy, "", InsertPt);
   }
   
   // Convert vectors and fp to integer, which can be manipulated.
-  if (!isa<IntegerType>(StoredValTy)) {
+  if (!StoredValTy->isIntegerTy()) {
     StoredValTy = IntegerType::get(StoredValTy->getContext(), StoreSize);
     StoredVal = new BitCastInst(StoredVal, StoredValTy, "", InsertPt);
   }
@@ -927,7 +927,7 @@
     return StoredVal;
   
   // If the result is a pointer, inttoptr.
-  if (isa<PointerType>(LoadedTy))
+  if (LoadedTy->isPointerTy())
     return new IntToPtrInst(StoredVal, LoadedTy, "inttoptr", InsertPt);
   
   // Otherwise, bitcast.
@@ -989,7 +989,7 @@
                                           const TargetData &TD) {
   // If the loaded or stored value is an first class array or struct, don't try
   // to transform them.  We need to be able to bitcast to integer.
-  if (isa<StructType>(LoadTy) || isa<ArrayType>(LoadTy))
+  if (LoadTy->isStructTy() || LoadTy->isArrayTy())
     return -1;
   
   int64_t StoreOffset = 0, LoadOffset = 0;
@@ -1064,8 +1064,8 @@
                                           StoreInst *DepSI,
                                           const TargetData &TD) {
   // Cannot handle reading from store of first-class aggregate yet.
-  if (isa<StructType>(DepSI->getOperand(0)->getType()) ||
-      isa<ArrayType>(DepSI->getOperand(0)->getType()))
+  if (DepSI->getOperand(0)->getType()->isStructTy() ||
+      DepSI->getOperand(0)->getType()->isArrayTy())
     return -1;
 
   Value *StorePtr = DepSI->getPointerOperand();
@@ -1136,9 +1136,9 @@
   
   // Compute which bits of the stored value are being used by the load.  Convert
   // to an integer type to start with.
-  if (isa<PointerType>(SrcVal->getType()))
+  if (SrcVal->getType()->isPointerTy())
     SrcVal = Builder.CreatePtrToInt(SrcVal, TD.getIntPtrType(Ctx), "tmp");
-  if (!isa<IntegerType>(SrcVal->getType()))
+  if (!SrcVal->getType()->isIntegerTy())
     SrcVal = Builder.CreateBitCast(SrcVal, IntegerType::get(Ctx, StoreSize*8),
                                    "tmp");
   
@@ -1323,7 +1323,7 @@
   Value *V = SSAUpdate.GetValueInMiddleOfBlock(LI->getParent());
   
   // If new PHI nodes were created, notify alias analysis.
-  if (isa<PointerType>(V->getType()))
+  if (V->getType()->isPointerTy())
     for (unsigned i = 0, e = NewPHIs.size(); i != e; ++i)
       AA->copyValue(LI, NewPHIs[i]);
 
@@ -1491,7 +1491,7 @@
 
     if (isa<PHINode>(V))
       V->takeName(LI);
-    if (isa<PointerType>(V->getType()))
+    if (V->getType()->isPointerTy())
       MD->invalidateCachedPointerInfo(V);
     toErase.push_back(LI);
     NumGVNLoad++;
@@ -1705,7 +1705,7 @@
   LI->replaceAllUsesWith(V);
   if (isa<PHINode>(V))
     V->takeName(LI);
-  if (isa<PointerType>(V->getType()))
+  if (V->getType()->isPointerTy())
     MD->invalidateCachedPointerInfo(V);
   toErase.push_back(LI);
   NumPRELoad++;
@@ -1765,7 +1765,7 @@
       
       // Replace the load!
       L->replaceAllUsesWith(AvailVal);
-      if (isa<PointerType>(AvailVal->getType()))
+      if (AvailVal->getType()->isPointerTy())
         MD->invalidateCachedPointerInfo(AvailVal);
       toErase.push_back(L);
       NumGVNLoad++;
@@ -1810,7 +1810,7 @@
 
     // Remove it!
     L->replaceAllUsesWith(StoredVal);
-    if (isa<PointerType>(StoredVal->getType()))
+    if (StoredVal->getType()->isPointerTy())
       MD->invalidateCachedPointerInfo(StoredVal);
     toErase.push_back(L);
     NumGVNLoad++;
@@ -1839,7 +1839,7 @@
     
     // Remove it!
     L->replaceAllUsesWith(AvailableVal);
-    if (isa<PointerType>(DepLI->getType()))
+    if (DepLI->getType()->isPointerTy())
       MD->invalidateCachedPointerInfo(DepLI);
     toErase.push_back(L);
     NumGVNLoad++;
@@ -1943,7 +1943,7 @@
 
     if (constVal) {
       p->replaceAllUsesWith(constVal);
-      if (MD && isa<PointerType>(constVal->getType()))
+      if (MD && constVal->getType()->isPointerTy())
         MD->invalidateCachedPointerInfo(constVal);
       VN.erase(p);
 
@@ -1964,7 +1964,7 @@
     // Remove it!
     VN.erase(I);
     I->replaceAllUsesWith(repl);
-    if (MD && isa<PointerType>(repl->getType()))
+    if (MD && repl->getType()->isPointerTy())
       MD->invalidateCachedPointerInfo(repl);
     toErase.push_back(I);
     return true;
@@ -2204,7 +2204,7 @@
       localAvail[CurrentBlock]->table[ValNo] = Phi;
 
       CurInst->replaceAllUsesWith(Phi);
-      if (MD && isa<PointerType>(Phi->getType()))
+      if (MD && Phi->getType()->isPointerTy())
         MD->invalidateCachedPointerInfo(Phi);
       VN.erase(CurInst);
 
diff --git a/lib/Transforms/Scalar/IndVarSimplify.cpp b/lib/Transforms/Scalar/IndVarSimplify.cpp
index 5302fdc..432e7ea 100644
--- a/lib/Transforms/Scalar/IndVarSimplify.cpp
+++ b/lib/Transforms/Scalar/IndVarSimplify.cpp
@@ -248,8 +248,8 @@
         Value *InVal = PN->getIncomingValue(i);
         if (!isa<Instruction>(InVal) ||
             // SCEV only supports integer expressions for now.
-            (!isa<IntegerType>(InVal->getType()) &&
-             !isa<PointerType>(InVal->getType())))
+            (!InVal->getType()->isIntegerTy() &&
+             !InVal->getType()->isPointerTy()))
           continue;
 
         // If this pred is for a subloop, not L itself, skip it.
diff --git a/lib/Transforms/Scalar/JumpThreading.cpp b/lib/Transforms/Scalar/JumpThreading.cpp
index 8f21aac..a6489ec 100644
--- a/lib/Transforms/Scalar/JumpThreading.cpp
+++ b/lib/Transforms/Scalar/JumpThreading.cpp
@@ -201,7 +201,7 @@
     if (isa<DbgInfoIntrinsic>(I)) continue;
     
     // If this is a pointer->pointer bitcast, it is free.
-    if (isa<BitCastInst>(I) && isa<PointerType>(I->getType()))
+    if (isa<BitCastInst>(I) && I->getType()->isPointerTy())
       continue;
     
     // All other instructions count for at least one unit.
@@ -214,7 +214,7 @@
     if (const CallInst *CI = dyn_cast<CallInst>(I)) {
       if (!isa<IntrinsicInst>(CI))
         Size += 3;
-      else if (!isa<VectorType>(CI->getType()))
+      else if (!CI->getType()->isVectorTy())
         Size += 1;
     }
   }
diff --git a/lib/Transforms/Scalar/LICM.cpp b/lib/Transforms/Scalar/LICM.cpp
index 81f9ae6..d7ace34 100644
--- a/lib/Transforms/Scalar/LICM.cpp
+++ b/lib/Transforms/Scalar/LICM.cpp
@@ -678,7 +678,7 @@
     // If we are promoting a pointer value, update alias information for the
     // inserted load.
     Value *LoadValue = 0;
-    if (isa<PointerType>(cast<PointerType>(Ptr->getType())->getElementType())) {
+    if (cast<PointerType>(Ptr->getType())->getElementType()->isPointerTy()) {
       // Locate a load or store through the pointer, and assign the same value
       // to LI as we are loading or storing.  Since we know that the value is
       // stored in this loop, this will always succeed.
@@ -751,7 +751,7 @@
       LoadInst *LI = new LoadInst(PromotedValues[i].first, "", InsertPos);
 
       // If this is a pointer type, update alias info appropriately.
-      if (isa<PointerType>(LI->getType()))
+      if (LI->getType()->isPointerTy())
         CurAST->copyValue(PointerValueNumbers[PVN++], LI);
 
       // Store into the memory we promoted.
diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 240b298..48d8919 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -925,7 +925,7 @@
   case ICmpZero: OS << "ICmpZero"; break;
   case Address:
     OS << "Address of ";
-    if (isa<PointerType>(AccessTy))
+    if (AccessTy->isPointerTy())
       OS << "pointer"; // the full pointer type could be really verbose
     else
       OS << *AccessTy;
diff --git a/lib/Transforms/Scalar/LoopUnswitch.cpp b/lib/Transforms/Scalar/LoopUnswitch.cpp
index 990e0c4..071e9b7 100644
--- a/lib/Transforms/Scalar/LoopUnswitch.cpp
+++ b/lib/Transforms/Scalar/LoopUnswitch.cpp
@@ -170,7 +170,7 @@
 /// Otherwise, return null.
 static Value *FindLIVLoopCondition(Value *Cond, Loop *L, bool &Changed) {
   // We can never unswitch on vector conditions.
-  if (isa<VectorType>(Cond->getType()))
+  if (Cond->getType()->isVectorTy())
     return 0;
 
   // Constants should be folded, not unswitched on!
diff --git a/lib/Transforms/Scalar/Reassociate.cpp b/lib/Transforms/Scalar/Reassociate.cpp
index 187216a..12827b6 100644
--- a/lib/Transforms/Scalar/Reassociate.cpp
+++ b/lib/Transforms/Scalar/Reassociate.cpp
@@ -930,7 +930,7 @@
 
     // Reject cases where it is pointless to do this.
     if (!isa<BinaryOperator>(BI) || BI->getType()->isFloatingPointTy() || 
-        isa<VectorType>(BI->getType()))
+        BI->getType()->isVectorTy())
       continue;  // Floating point ops are not associative.
 
     // Do not reassociate boolean (i1) expressions.  We want to preserve the
diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp
index 02b45a1..8d06690 100644
--- a/lib/Transforms/Scalar/SCCP.cpp
+++ b/lib/Transforms/Scalar/SCCP.cpp
@@ -295,7 +295,7 @@
   }
 
   void markOverdefined(Value *V) {
-    assert(!isa<StructType>(V->getType()) && "Should use other method");
+    assert(!V->getType()->isStructTy() && "Should use other method");
     markOverdefined(ValueState[V], V);
   }
 
@@ -321,12 +321,12 @@
   }
   
   void markConstant(Value *V, Constant *C) {
-    assert(!isa<StructType>(V->getType()) && "Should use other method");
+    assert(!V->getType()->isStructTy() && "Should use other method");
     markConstant(ValueState[V], V, C);
   }
 
   void markForcedConstant(Value *V, Constant *C) {
-    assert(!isa<StructType>(V->getType()) && "Should use other method");
+    assert(!V->getType()->isStructTy() && "Should use other method");
     ValueState[V].markForcedConstant(C);
     DEBUG(dbgs() << "markForcedConstant: " << *C << ": " << *V << '\n');
     InstWorkList.push_back(V);
@@ -360,7 +360,7 @@
   }
   
   void mergeInValue(Value *V, LatticeVal MergeWithV) {
-    assert(!isa<StructType>(V->getType()) && "Should use other method");
+    assert(!V->getType()->isStructTy() && "Should use other method");
     mergeInValue(ValueState[V], V, MergeWithV);
   }
 
@@ -369,7 +369,7 @@
   /// value.  This function handles the case when the value hasn't been seen yet
   /// by properly seeding constants etc.
   LatticeVal &getValueState(Value *V) {
-    assert(!isa<StructType>(V->getType()) && "Should use getStructValueState");
+    assert(!V->getType()->isStructTy() && "Should use getStructValueState");
 
     std::pair<DenseMap<Value*, LatticeVal>::iterator, bool> I =
       ValueState.insert(std::make_pair(V, LatticeVal()));
@@ -392,7 +392,7 @@
   /// value/field pair.  This function handles the case when the value hasn't
   /// been seen yet by properly seeding constants etc.
   LatticeVal &getStructValueState(Value *V, unsigned i) {
-    assert(isa<StructType>(V->getType()) && "Should use getValueState");
+    assert(V->getType()->isStructTy() && "Should use getValueState");
     assert(i < cast<StructType>(V->getType())->getNumElements() &&
            "Invalid element #");
 
@@ -666,7 +666,7 @@
 void SCCPSolver::visitPHINode(PHINode &PN) {
   // If this PN returns a struct, just mark the result overdefined.
   // TODO: We could do a lot better than this if code actually uses this.
-  if (isa<StructType>(PN.getType()))
+  if (PN.getType()->isStructTy())
     return markAnythingOverdefined(&PN);
   
   if (getValueState(&PN).isOverdefined()) {
@@ -742,7 +742,7 @@
   Value *ResultOp = I.getOperand(0);
   
   // If we are tracking the return value of this function, merge it in.
-  if (!TrackedRetVals.empty() && !isa<StructType>(ResultOp->getType())) {
+  if (!TrackedRetVals.empty() && !ResultOp->getType()->isStructTy()) {
     DenseMap<Function*, LatticeVal>::iterator TFRVI =
       TrackedRetVals.find(F);
     if (TFRVI != TrackedRetVals.end()) {
@@ -787,7 +787,7 @@
 void SCCPSolver::visitExtractValueInst(ExtractValueInst &EVI) {
   // If this returns a struct, mark all elements over defined, we don't track
   // structs in structs.
-  if (isa<StructType>(EVI.getType()))
+  if (EVI.getType()->isStructTy())
     return markAnythingOverdefined(&EVI);
     
   // If this is extracting from more than one level of struct, we don't know.
@@ -795,7 +795,7 @@
     return markOverdefined(&EVI);
 
   Value *AggVal = EVI.getAggregateOperand();
-  if (isa<StructType>(AggVal->getType())) {
+  if (AggVal->getType()->isStructTy()) {
     unsigned i = *EVI.idx_begin();
     LatticeVal EltVal = getStructValueState(AggVal, i);
     mergeInValue(getValueState(&EVI), &EVI, EltVal);
@@ -828,7 +828,7 @@
     }
     
     Value *Val = IVI.getInsertedValueOperand();
-    if (isa<StructType>(Val->getType()))
+    if (Val->getType()->isStructTy())
       // We don't track structs in structs.
       markOverdefined(getStructValueState(&IVI, i), &IVI);
     else {
@@ -841,7 +841,7 @@
 void SCCPSolver::visitSelectInst(SelectInst &I) {
   // If this select returns a struct, just mark the result overdefined.
   // TODO: We could do a lot better than this if code actually uses this.
-  if (isa<StructType>(I.getType()))
+  if (I.getType()->isStructTy())
     return markAnythingOverdefined(&I);
   
   LatticeVal CondValue = getValueState(I.getCondition());
@@ -1166,7 +1166,7 @@
 
 void SCCPSolver::visitStoreInst(StoreInst &SI) {
   // If this store is of a struct, ignore it.
-  if (isa<StructType>(SI.getOperand(0)->getType()))
+  if (SI.getOperand(0)->getType()->isStructTy())
     return;
   
   if (TrackedGlobals.empty() || !isa<GlobalVariable>(SI.getOperand(1)))
@@ -1187,7 +1187,7 @@
 // global, we can replace the load with the loaded constant value!
 void SCCPSolver::visitLoadInst(LoadInst &I) {
   // If this load is of a struct, just mark the result overdefined.
-  if (isa<StructType>(I.getType()))
+  if (I.getType()->isStructTy())
     return markAnythingOverdefined(&I);
   
   LatticeVal PtrVal = getValueState(I.getOperand(0));
@@ -1241,7 +1241,7 @@
     
     // Otherwise, if we have a single return value case, and if the function is
     // a declaration, maybe we can constant fold it.
-    if (F && F->isDeclaration() && !isa<StructType>(I->getType()) &&
+    if (F && F->isDeclaration() && !I->getType()->isStructTy() &&
         canConstantFoldCallTo(F)) {
       
       SmallVector<Constant*, 8> Operands;
@@ -1352,7 +1352,7 @@
       // since all of its users will have already been marked as overdefined.
       // Update all of the users of this instruction's value.
       //
-      if (isa<StructType>(I->getType()) || !getValueState(I).isOverdefined())
+      if (I->getType()->isStructTy() || !getValueState(I).isOverdefined())
         for (Value::use_iterator UI = I->use_begin(), E = I->use_end();
              UI != E; ++UI)
           if (Instruction *I = dyn_cast<Instruction>(*UI))
@@ -1418,7 +1418,7 @@
       if (!LV.isUndefined()) continue;
 
       // No instructions using structs need disambiguation.
-      if (isa<StructType>(I->getOperand(0)->getType()))
+      if (I->getOperand(0)->getType()->isStructTy())
         continue;
 
       // Get the lattice values of the first two operands for use below.
@@ -1426,7 +1426,7 @@
       LatticeVal Op1LV;
       if (I->getNumOperands() == 2) {
         // No instructions using structs need disambiguation.
-        if (isa<StructType>(I->getOperand(1)->getType()))
+        if (I->getOperand(1)->getType()->isStructTy())
           continue;
         
         // If this is a two-operand instruction, and if both operands are
@@ -1656,7 +1656,7 @@
         continue;
       
       // TODO: Reconstruct structs from their elements.
-      if (isa<StructType>(Inst->getType()))
+      if (Inst->getType()->isStructTy())
         continue;
       
       LatticeVal IV = Solver.getLatticeValueFor(Inst);
@@ -1792,7 +1792,7 @@
     if (Solver.isBlockExecutable(F->begin())) {
       for (Function::arg_iterator AI = F->arg_begin(), E = F->arg_end();
            AI != E; ++AI) {
-        if (AI->use_empty() || isa<StructType>(AI->getType())) continue;
+        if (AI->use_empty() || AI->getType()->isStructTy()) continue;
         
         // TODO: Could use getStructLatticeValueFor to find out if the entire
         // result is a constant and replace it entirely if so.
@@ -1835,7 +1835,7 @@
       
       for (BasicBlock::iterator BI = BB->begin(), E = BB->end(); BI != E; ) {
         Instruction *Inst = BI++;
-        if (Inst->getType()->isVoidTy() || isa<StructType>(Inst->getType()))
+        if (Inst->getType()->isVoidTy() || Inst->getType()->isStructTy())
           continue;
         
         // TODO: Could use getStructLatticeValueFor to find out if the entire
diff --git a/lib/Transforms/Scalar/ScalarReplAggregates.cpp b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
index 822712e..bbe6270 100644
--- a/lib/Transforms/Scalar/ScalarReplAggregates.cpp
+++ b/lib/Transforms/Scalar/ScalarReplAggregates.cpp
@@ -302,7 +302,7 @@
       // random stuff that doesn't use vectors (e.g. <9 x double>) because then
       // we just get a lot of insert/extracts.  If at least one vector is
       // involved, then we probably really do have a union of vector/array.
-      if (VectorTy && isa<VectorType>(VectorTy) && HadAVector) {
+      if (VectorTy && VectorTy->isVectorTy() && HadAVector) {
         DEBUG(dbgs() << "CONVERT TO VECTOR: " << *AI << "\n  TYPE = "
                      << *VectorTy << '\n');
         
@@ -449,7 +449,7 @@
   // into.
   for (; GEPIt != E; ++GEPIt) {
     // Ignore struct elements, no extra checking needed for these.
-    if (isa<StructType>(*GEPIt))
+    if ((*GEPIt)->isStructTy())
       continue;
 
     ConstantInt *IdxVal = dyn_cast<ConstantInt>(GEPIt.getOperand());
@@ -480,7 +480,7 @@
     // (which are essentially the same as the MemIntrinsics, especially with
     // regard to copying padding between elements), or references using the
     // aggregate type of the alloca.
-    if (!MemOpType || isa<IntegerType>(MemOpType) || UsesAggregateType) {
+    if (!MemOpType || MemOpType->isIntegerTy() || UsesAggregateType) {
       if (!UsesAggregateType) {
         if (isStore)
           Info.isMemCpyDst = true;
@@ -565,7 +565,7 @@
         }
         LI->replaceAllUsesWith(Insert);
         DeadInsts.push_back(LI);
-      } else if (isa<IntegerType>(LIType) &&
+      } else if (LIType->isIntegerTy() &&
                  TD->getTypeAllocSize(LIType) ==
                  TD->getTypeAllocSize(AI->getAllocatedType())) {
         // If this is a load of the entire alloca to an integer, rewrite it.
@@ -588,7 +588,7 @@
           new StoreInst(Extract, NewElts[i], SI);
         }
         DeadInsts.push_back(SI);
-      } else if (isa<IntegerType>(SIType) &&
+      } else if (SIType->isIntegerTy() &&
                  TD->getTypeAllocSize(SIType) ==
                  TD->getTypeAllocSize(AI->getAllocatedType())) {
         // If this is a store of the entire alloca from an integer, rewrite it.
@@ -833,7 +833,7 @@
           
           // Convert the integer value to the appropriate type.
           StoreVal = ConstantInt::get(Context, TotalVal);
-          if (isa<PointerType>(ValTy))
+          if (ValTy->isPointerTy())
             StoreVal = ConstantExpr::getIntToPtr(StoreVal, ValTy);
           else if (ValTy->isFloatingPointTy())
             StoreVal = ConstantExpr::getBitCast(StoreVal, ValTy);
@@ -939,7 +939,7 @@
       Value *DestField = NewElts[i];
       if (EltVal->getType() == FieldTy) {
         // Storing to an integer field of this size, just do it.
-      } else if (FieldTy->isFloatingPointTy() || isa<VectorType>(FieldTy)) {
+      } else if (FieldTy->isFloatingPointTy() || FieldTy->isVectorTy()) {
         // Bitcast to the right element type (for fp/vector values).
         EltVal = new BitCastInst(EltVal, FieldTy, "", SI);
       } else {
@@ -984,7 +984,7 @@
       if (EltVal->getType() == ArrayEltTy) {
         // Storing to an integer field of this size, just do it.
       } else if (ArrayEltTy->isFloatingPointTy() ||
-                 isa<VectorType>(ArrayEltTy)) {
+                 ArrayEltTy->isVectorTy()) {
         // Bitcast to the right element type (for fp/vector values).
         EltVal = new BitCastInst(EltVal, ArrayEltTy, "", SI);
       } else {
@@ -1044,8 +1044,8 @@
     
     const IntegerType *FieldIntTy = IntegerType::get(LI->getContext(), 
                                                      FieldSizeBits);
-    if (!isa<IntegerType>(FieldTy) && !FieldTy->isFloatingPointTy() &&
-        !isa<VectorType>(FieldTy))
+    if (!FieldTy->isIntegerTy() && !FieldTy->isFloatingPointTy() &&
+        !FieldTy->isVectorTy())
       SrcField = new BitCastInst(SrcField,
                                  PointerType::getUnqual(FieldIntTy),
                                  "", LI);
@@ -1183,7 +1183,7 @@
         return;
       }
     } else if (In->isFloatTy() || In->isDoubleTy() ||
-               (isa<IntegerType>(In) && In->getPrimitiveSizeInBits() >= 8 &&
+               (In->isIntegerTy() && In->getPrimitiveSizeInBits() >= 8 &&
                 isPowerOf2_32(In->getPrimitiveSizeInBits()))) {
       // If we're accessing something that could be an element of a vector, see
       // if the implied vector agrees with what we already have and if Offset is
@@ -1227,7 +1227,7 @@
         return false;
       MergeInType(LI->getType(), Offset, VecTy,
                   AllocaSize, *TD, V->getContext());
-      SawVec |= isa<VectorType>(LI->getType());
+      SawVec |= LI->getType()->isVectorTy();
       continue;
     }
     
@@ -1236,7 +1236,7 @@
       if (SI->getOperand(0) == V || SI->isVolatile()) return 0;
       MergeInType(SI->getOperand(0)->getType(), Offset,
                   VecTy, AllocaSize, *TD, V->getContext());
-      SawVec |= isa<VectorType>(SI->getOperand(0)->getType());
+      SawVec |= SI->getOperand(0)->getType()->isVectorTy();
       continue;
     }
     
@@ -1438,7 +1438,7 @@
   // If the result alloca is a vector type, this is either an element
   // access or a bitcast to another vector type of the same size.
   if (const VectorType *VTy = dyn_cast<VectorType>(FromVal->getType())) {
-    if (isa<VectorType>(ToType))
+    if (ToType->isVectorTy())
       return Builder.CreateBitCast(FromVal, ToType, "tmp");
 
     // Otherwise it must be an element access.
@@ -1521,9 +1521,9 @@
                                                     LIBitWidth), "tmp");
 
   // If the result is an integer, this is a trunc or bitcast.
-  if (isa<IntegerType>(ToType)) {
+  if (ToType->isIntegerTy()) {
     // Should be done.
-  } else if (ToType->isFloatingPointTy() || isa<VectorType>(ToType)) {
+  } else if (ToType->isFloatingPointTy() || ToType->isVectorTy()) {
     // Just do a bitcast, we know the sizes match up.
     FromVal = Builder.CreateBitCast(FromVal, ToType, "tmp");
   } else {
@@ -1601,10 +1601,10 @@
   unsigned DestWidth = TD->getTypeSizeInBits(AllocaType);
   unsigned SrcStoreWidth = TD->getTypeStoreSizeInBits(SV->getType());
   unsigned DestStoreWidth = TD->getTypeStoreSizeInBits(AllocaType);
-  if (SV->getType()->isFloatingPointTy() || isa<VectorType>(SV->getType()))
+  if (SV->getType()->isFloatingPointTy() || SV->getType()->isVectorTy())
     SV = Builder.CreateBitCast(SV,
                             IntegerType::get(SV->getContext(),SrcWidth), "tmp");
-  else if (isa<PointerType>(SV->getType()))
+  else if (SV->getType()->isPointerTy())
     SV = Builder.CreatePtrToInt(SV, TD->getIntPtrType(SV->getContext()), "tmp");
 
   // Zero extend or truncate the value if needed.
diff --git a/lib/Transforms/Scalar/SimplifyLibCalls.cpp b/lib/Transforms/Scalar/SimplifyLibCalls.cpp
index 54b4380..cde214b 100644
--- a/lib/Transforms/Scalar/SimplifyLibCalls.cpp
+++ b/lib/Transforms/Scalar/SimplifyLibCalls.cpp
@@ -357,7 +357,7 @@
   AWI[0] = AttributeWithIndex::get(2, Attribute::NoCapture);
   AWI[1] = AttributeWithIndex::get(~0u, Attribute::NoUnwind);
   Constant *F;
-  if (isa<PointerType>(File->getType()))
+  if (File->getType()->isPointerTy())
     F = M->getOrInsertFunction("fputc", AttrListPtr::get(AWI, 2),
                                Type::getInt32Ty(*Context),
                                Type::getInt32Ty(*Context), File->getType(),
@@ -384,7 +384,7 @@
   AWI[1] = AttributeWithIndex::get(2, Attribute::NoCapture);
   AWI[2] = AttributeWithIndex::get(~0u, Attribute::NoUnwind);
   Constant *F;
-  if (isa<PointerType>(File->getType()))
+  if (File->getType()->isPointerTy())
     F = M->getOrInsertFunction("fputs", AttrListPtr::get(AWI, 3),
                                Type::getInt32Ty(*Context),
                                Type::getInt8PtrTy(*Context),
@@ -409,7 +409,7 @@
   AWI[1] = AttributeWithIndex::get(4, Attribute::NoCapture);
   AWI[2] = AttributeWithIndex::get(~0u, Attribute::NoUnwind);
   Constant *F;
-  if (isa<PointerType>(File->getType()))
+  if (File->getType()->isPointerTy())
     F = M->getOrInsertFunction("fwrite", AttrListPtr::get(AWI, 3),
                                TD->getIntPtrType(*Context),
                                Type::getInt8PtrTy(*Context),
@@ -548,7 +548,7 @@
 /// GetStringLength - If we can compute the length of the string pointed to by
 /// the specified pointer, return 'len+1'.  If we can't, return 0.
 static uint64_t GetStringLength(Value *V) {
-  if (!isa<PointerType>(V->getType())) return 0;
+  if (!V->getType()->isPointerTy()) return 0;
 
   SmallPtrSet<PHINode*, 32> PHIs;
   uint64_t Len = GetStringLengthH(V, PHIs);
@@ -638,7 +638,7 @@
         FT->getReturnType() != Type::getInt8PtrTy(*Context) ||
         FT->getParamType(0) != FT->getReturnType() ||
         FT->getParamType(1) != FT->getReturnType() ||
-        !isa<IntegerType>(FT->getParamType(2)))
+        !FT->getParamType(2)->isIntegerTy())
       return 0;
 
     // Extract some information from the instruction
@@ -790,7 +790,7 @@
 	!FT->getReturnType()->isIntegerTy(32) ||
         FT->getParamType(0) != FT->getParamType(1) ||
         FT->getParamType(0) != Type::getInt8PtrTy(*Context) ||
-        !isa<IntegerType>(FT->getParamType(2)))
+        !FT->getParamType(2)->isIntegerTy())
       return 0;
 
     Value *Str1P = CI->getOperand(1), *Str2P = CI->getOperand(2);
@@ -866,7 +866,7 @@
     if (FT->getNumParams() != 3 || FT->getReturnType() != FT->getParamType(0) ||
         FT->getParamType(0) != FT->getParamType(1) ||
         FT->getParamType(0) != Type::getInt8PtrTy(*Context) ||
-        !isa<IntegerType>(FT->getParamType(2)))
+        !FT->getParamType(2)->isIntegerTy())
       return 0;
 
     Value *Dst = CI->getOperand(1);
@@ -915,7 +915,7 @@
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 1 ||
         FT->getParamType(0) != Type::getInt8PtrTy(*Context) ||
-        !isa<IntegerType>(FT->getReturnType()))
+        !FT->getReturnType()->isIntegerTy())
       return 0;
 
     Value *Src = CI->getOperand(1);
@@ -939,8 +939,8 @@
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     const FunctionType *FT = Callee->getFunctionType();
     if ((FT->getNumParams() != 2 && FT->getNumParams() != 3) ||
-        !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<PointerType>(FT->getParamType(1)))
+        !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isPointerTy())
       return 0;
 
     Value *EndPtr = CI->getOperand(2);
@@ -960,9 +960,9 @@
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 2 ||
-        !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<PointerType>(FT->getParamType(1)) ||
-        !isa<PointerType>(FT->getReturnType()))
+        !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isPointerTy() ||
+        !FT->getReturnType()->isPointerTy())
       return 0;
 
     // fold strstr(x, x) -> x.
@@ -1006,8 +1006,8 @@
 struct MemCmpOpt : public LibCallOptimization {
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     const FunctionType *FT = Callee->getFunctionType();
-    if (FT->getNumParams() != 3 || !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<PointerType>(FT->getParamType(1)) ||
+    if (FT->getNumParams() != 3 || !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isPointerTy() ||
         !FT->getReturnType()->isIntegerTy(32))
       return 0;
 
@@ -1055,8 +1055,8 @@
 
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 3 || FT->getReturnType() != FT->getParamType(0) ||
-        !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<PointerType>(FT->getParamType(1)) ||
+        !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isPointerTy() ||
         FT->getParamType(2) != TD->getIntPtrType(*Context))
       return 0;
 
@@ -1076,8 +1076,8 @@
 
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 3 || FT->getReturnType() != FT->getParamType(0) ||
-        !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<PointerType>(FT->getParamType(1)) ||
+        !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isPointerTy() ||
         FT->getParamType(2) != TD->getIntPtrType(*Context))
       return 0;
 
@@ -1097,8 +1097,8 @@
 
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 3 || FT->getReturnType() != FT->getParamType(0) ||
-        !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<IntegerType>(FT->getParamType(1)) ||
+        !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isIntegerTy() ||
         FT->getParamType(2) != TD->getIntPtrType(*Context))
       return 0;
 
@@ -1124,9 +1124,9 @@
 
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 4 || FT->getReturnType() != FT->getParamType(0) ||
-        !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<PointerType>(FT->getParamType(1)) ||
-        !isa<IntegerType>(FT->getParamType(3)) ||
+        !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isPointerTy() ||
+        !FT->getParamType(3)->isIntegerTy() ||
         FT->getParamType(2) != TD->getIntPtrType(*Context))
       return 0;
 
@@ -1152,9 +1152,9 @@
 
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 4 || FT->getReturnType() != FT->getParamType(0) ||
-        !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<IntegerType>(FT->getParamType(1)) ||
-        !isa<IntegerType>(FT->getParamType(3)) ||
+        !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isIntegerTy() ||
+        !FT->getParamType(3)->isIntegerTy() ||
         FT->getParamType(2) != TD->getIntPtrType(*Context))
       return 0;
 
@@ -1182,9 +1182,9 @@
 
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 4 || FT->getReturnType() != FT->getParamType(0) ||
-        !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<PointerType>(FT->getParamType(1)) ||
-        !isa<IntegerType>(FT->getParamType(3)) ||
+        !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isPointerTy() ||
+        !FT->getParamType(3)->isIntegerTy() ||
         FT->getParamType(2) != TD->getIntPtrType(*Context))
       return 0;
 
@@ -1205,8 +1205,8 @@
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     const FunctionType *FT = Callee->getFunctionType();
     if (FT->getNumParams() != 3 || FT->getReturnType() != FT->getParamType(0) ||
-        !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<PointerType>(FT->getParamType(1)))
+        !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isPointerTy())
       return 0;
 
     ConstantInt *SizeCI = dyn_cast<ConstantInt>(CI->getOperand(3));
@@ -1376,7 +1376,7 @@
     // result type.
     if (FT->getNumParams() != 1 ||
 	!FT->getReturnType()->isIntegerTy(32) ||
-        !isa<IntegerType>(FT->getParamType(0)))
+        !FT->getParamType(0)->isIntegerTy())
       return 0;
 
     Value *Op = CI->getOperand(1);
@@ -1410,7 +1410,7 @@
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     const FunctionType *FT = Callee->getFunctionType();
     // We require integer(i32)
-    if (FT->getNumParams() != 1 || !isa<IntegerType>(FT->getReturnType()) ||
+    if (FT->getNumParams() != 1 || !FT->getReturnType()->isIntegerTy() ||
         !FT->getParamType(0)->isIntegerTy(32))
       return 0;
 
@@ -1431,7 +1431,7 @@
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     const FunctionType *FT = Callee->getFunctionType();
     // We require integer(i32)
-    if (FT->getNumParams() != 1 || !isa<IntegerType>(FT->getReturnType()) ||
+    if (FT->getNumParams() != 1 || !FT->getReturnType()->isIntegerTy() ||
         !FT->getParamType(0)->isIntegerTy(32))
       return 0;
 
@@ -1450,7 +1450,7 @@
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     const FunctionType *FT = Callee->getFunctionType();
     // We require integer(integer) where the types agree.
-    if (FT->getNumParams() != 1 || !isa<IntegerType>(FT->getReturnType()) ||
+    if (FT->getNumParams() != 1 || !FT->getReturnType()->isIntegerTy() ||
         FT->getParamType(0) != FT->getReturnType())
       return 0;
 
@@ -1493,8 +1493,8 @@
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     // Require one fixed pointer argument and an integer/void result.
     const FunctionType *FT = Callee->getFunctionType();
-    if (FT->getNumParams() < 1 || !isa<PointerType>(FT->getParamType(0)) ||
-        !(isa<IntegerType>(FT->getReturnType()) ||
+    if (FT->getNumParams() < 1 || !FT->getParamType(0)->isPointerTy() ||
+        !(FT->getReturnType()->isIntegerTy() ||
           FT->getReturnType()->isVoidTy()))
       return 0;
 
@@ -1534,7 +1534,7 @@
     // Optimize specific format strings.
     // printf("%c", chr) --> putchar(*(i8*)dst)
     if (FormatStr == "%c" && CI->getNumOperands() > 2 &&
-        isa<IntegerType>(CI->getOperand(2)->getType())) {
+        CI->getOperand(2)->getType()->isIntegerTy()) {
       Value *Res = EmitPutChar(CI->getOperand(2), B);
 
       if (CI->use_empty()) return CI;
@@ -1543,7 +1543,7 @@
 
     // printf("%s\n", str) --> puts(str)
     if (FormatStr == "%s\n" && CI->getNumOperands() > 2 &&
-        isa<PointerType>(CI->getOperand(2)->getType()) &&
+        CI->getOperand(2)->getType()->isPointerTy() &&
         CI->use_empty()) {
       EmitPutS(CI->getOperand(2), B);
       return CI;
@@ -1559,9 +1559,9 @@
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     // Require two fixed pointer arguments and an integer result.
     const FunctionType *FT = Callee->getFunctionType();
-    if (FT->getNumParams() != 2 || !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<PointerType>(FT->getParamType(1)) ||
-        !isa<IntegerType>(FT->getReturnType()))
+    if (FT->getNumParams() != 2 || !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isPointerTy() ||
+        !FT->getReturnType()->isIntegerTy())
       return 0;
 
     // Check for a fixed format string.
@@ -1595,7 +1595,7 @@
     // Decode the second character of the format string.
     if (FormatStr[1] == 'c') {
       // sprintf(dst, "%c", chr) --> *(i8*)dst = chr; *((i8*)dst+1) = 0
-      if (!isa<IntegerType>(CI->getOperand(3)->getType())) return 0;
+      if (!CI->getOperand(3)->getType()->isIntegerTy()) return 0;
       Value *V = B.CreateTrunc(CI->getOperand(3),
 			       Type::getInt8Ty(*Context), "char");
       Value *Ptr = CastToCStr(CI->getOperand(1), B);
@@ -1612,7 +1612,7 @@
       if (!TD) return 0;
 
       // sprintf(dest, "%s", str) -> llvm.memcpy(dest, str, strlen(str)+1, 1)
-      if (!isa<PointerType>(CI->getOperand(3)->getType())) return 0;
+      if (!CI->getOperand(3)->getType()->isPointerTy()) return 0;
 
       Value *Len = EmitStrLen(CI->getOperand(3), B);
       Value *IncLen = B.CreateAdd(Len,
@@ -1634,11 +1634,11 @@
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     // Require a pointer, an integer, an integer, a pointer, returning integer.
     const FunctionType *FT = Callee->getFunctionType();
-    if (FT->getNumParams() != 4 || !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<IntegerType>(FT->getParamType(1)) ||
-        !isa<IntegerType>(FT->getParamType(2)) ||
-        !isa<PointerType>(FT->getParamType(3)) ||
-        !isa<IntegerType>(FT->getReturnType()))
+    if (FT->getNumParams() != 4 || !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isIntegerTy() ||
+        !FT->getParamType(2)->isIntegerTy() ||
+        !FT->getParamType(3)->isPointerTy() ||
+        !FT->getReturnType()->isIntegerTy())
       return 0;
 
     // Get the element size and count.
@@ -1672,8 +1672,8 @@
 
     // Require two pointers.  Also, we can't optimize if return value is used.
     const FunctionType *FT = Callee->getFunctionType();
-    if (FT->getNumParams() != 2 || !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<PointerType>(FT->getParamType(1)) ||
+    if (FT->getNumParams() != 2 || !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isPointerTy() ||
         !CI->use_empty())
       return 0;
 
@@ -1694,9 +1694,9 @@
   virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
     // Require two fixed paramters as pointers and integer result.
     const FunctionType *FT = Callee->getFunctionType();
-    if (FT->getNumParams() != 2 || !isa<PointerType>(FT->getParamType(0)) ||
-        !isa<PointerType>(FT->getParamType(1)) ||
-        !isa<IntegerType>(FT->getReturnType()))
+    if (FT->getNumParams() != 2 || !FT->getParamType(0)->isPointerTy() ||
+        !FT->getParamType(1)->isPointerTy() ||
+        !FT->getReturnType()->isIntegerTy())
       return 0;
 
     // All the optimizations depend on the format string.
@@ -1728,14 +1728,14 @@
     // Decode the second character of the format string.
     if (FormatStr[1] == 'c') {
       // fprintf(F, "%c", chr) --> *(i8*)dst = chr
-      if (!isa<IntegerType>(CI->getOperand(3)->getType())) return 0;
+      if (!CI->getOperand(3)->getType()->isIntegerTy()) return 0;
       EmitFPutC(CI->getOperand(3), CI->getOperand(1), B);
       return ConstantInt::get(CI->getType(), 1);
     }
 
     if (FormatStr[1] == 's') {
       // fprintf(F, "%s", str) -> fputs(str, F)
-      if (!isa<PointerType>(CI->getOperand(3)->getType()) || !CI->use_empty())
+      if (!CI->getOperand(3)->getType()->isPointerTy() || !CI->use_empty())
         return 0;
       EmitFPutS(CI->getOperand(3), CI->getOperand(1), B);
       return CI;
@@ -2000,7 +2000,7 @@
       case 's':
         if (Name == "strlen") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setOnlyReadsMemory(F);
           setDoesNotThrow(F);
@@ -2018,14 +2018,14 @@
                    Name == "strncpy" ||
                    Name == "strtoull") {
           if (FTy->getNumParams() < 2 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 2);
         } else if (Name == "strxfrm") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2038,8 +2038,8 @@
                    Name == "strcasecmp" ||
                    Name == "strncasecmp") {
           if (FTy->getNumParams() < 2 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setOnlyReadsMemory(F);
           setDoesNotThrow(F);
@@ -2048,7 +2048,7 @@
         } else if (Name == "strstr" ||
                    Name == "strpbrk") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setOnlyReadsMemory(F);
           setDoesNotThrow(F);
@@ -2056,7 +2056,7 @@
         } else if (Name == "strtok" ||
                    Name == "strtok_r") {
           if (FTy->getNumParams() < 2 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 2);
@@ -2064,15 +2064,15 @@
                    Name == "setbuf" ||
                    Name == "setvbuf") {
           if (FTy->getNumParams() < 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
         } else if (Name == "strdup" ||
                    Name == "strndup") {
           if (FTy->getNumParams() < 1 ||
-              !isa<PointerType>(FTy->getReturnType()) ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getReturnType()->isPointerTy() ||
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
@@ -2082,31 +2082,31 @@
                    Name == "sprintf" ||
                    Name == "statvfs") {
           if (FTy->getNumParams() < 2 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
           setDoesNotCapture(F, 2);
         } else if (Name == "snprintf") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(2)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(2)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
           setDoesNotCapture(F, 3);
         } else if (Name == "setitimer") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(1)) ||
-              !isa<PointerType>(FTy->getParamType(2)))
+              !FTy->getParamType(1)->isPointerTy() ||
+              !FTy->getParamType(2)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 2);
           setDoesNotCapture(F, 3);
         } else if (Name == "system") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           // May throw; "system" is a valid pthread cancellation point.
           setDoesNotCapture(F, 1);
@@ -2115,14 +2115,14 @@
       case 'm':
         if (Name == "malloc") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getReturnType()))
+              !FTy->getReturnType()->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
         } else if (Name == "memcmp") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setOnlyReadsMemory(F);
           setDoesNotThrow(F);
@@ -2141,18 +2141,18 @@
                    Name == "memccpy" ||
                    Name == "memmove") {
           if (FTy->getNumParams() < 2 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 2);
         } else if (Name == "memalign") {
-          if (!isa<PointerType>(FTy->getReturnType()))
+          if (!FTy->getReturnType()->isPointerTy())
             continue;
           setDoesNotAlias(F, 0);
         } else if (Name == "mkdir" ||
                    Name == "mktime") {
           if (FTy->getNumParams() == 0 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2161,15 +2161,15 @@
       case 'r':
         if (Name == "realloc") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getReturnType()))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getReturnType()->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
           setDoesNotCapture(F, 1);
         } else if (Name == "read") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           // May throw; "read" is a valid pthread cancellation point.
           setDoesNotCapture(F, 2);
@@ -2178,15 +2178,15 @@
                    Name == "remove" ||
                    Name == "realpath") {
           if (FTy->getNumParams() < 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
         } else if (Name == "rename" ||
                    Name == "readlink") {
           if (FTy->getNumParams() < 2 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2196,7 +2196,7 @@
       case 'w':
         if (Name == "write") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           // May throw; "write" is a valid pthread cancellation point.
           setDoesNotCapture(F, 2);
@@ -2205,16 +2205,16 @@
       case 'b':
         if (Name == "bcopy") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
           setDoesNotCapture(F, 2);
         } else if (Name == "bcmp") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setOnlyReadsMemory(F);
@@ -2222,7 +2222,7 @@
           setDoesNotCapture(F, 2);
         } else if (Name == "bzero") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2231,7 +2231,7 @@
       case 'c':
         if (Name == "calloc") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getReturnType()))
+              !FTy->getReturnType()->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
@@ -2241,7 +2241,7 @@
                    Name == "clearerr" ||
                    Name == "closedir") {
           if (FTy->getNumParams() == 0 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2253,14 +2253,14 @@
             Name == "atof" ||
             Name == "atoll") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setOnlyReadsMemory(F);
           setDoesNotCapture(F, 1);
         } else if (Name == "access") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2269,9 +2269,9 @@
       case 'f':
         if (Name == "fopen") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getReturnType()) ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getReturnType()->isPointerTy() ||
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
@@ -2279,8 +2279,8 @@
           setDoesNotCapture(F, 2);
         } else if (Name == "fdopen") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getReturnType()) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getReturnType()->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
@@ -2300,13 +2300,13 @@
                    Name == "funlockfile" ||
                    Name == "ftrylockfile") {
           if (FTy->getNumParams() == 0 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
         } else if (Name == "ferror") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2318,22 +2318,22 @@
                    Name == "frexpl" ||
                    Name == "fstatvfs") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 2);
         } else if (Name == "fgets") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(2)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(2)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 3);
         } else if (Name == "fread" ||
                    Name == "fwrite") {
           if (FTy->getNumParams() != 4 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(3)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(3)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2343,8 +2343,8 @@
                    Name == "fprintf" ||
                    Name == "fgetpos") {
           if (FTy->getNumParams() < 2 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2356,13 +2356,13 @@
             Name == "getlogin_r" ||
             Name == "getc_unlocked") {
           if (FTy->getNumParams() == 0 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
         } else if (Name == "getenv") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setOnlyReadsMemory(F);
@@ -2372,13 +2372,13 @@
           setDoesNotThrow(F);
         } else if (Name == "getitimer") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 2);
         } else if (Name == "getpwnam") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2387,7 +2387,7 @@
       case 'u':
         if (Name == "ungetc") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 2);
@@ -2395,15 +2395,15 @@
                    Name == "unlink" ||
                    Name == "unsetenv") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
         } else if (Name == "utime" ||
                    Name == "utimes") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2413,7 +2413,7 @@
       case 'p':
         if (Name == "putc") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 2);
@@ -2421,14 +2421,14 @@
                    Name == "printf" ||
                    Name == "perror") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
         } else if (Name == "pread" ||
                    Name == "pwrite") {
           if (FTy->getNumParams() != 4 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           // May throw; these are valid pthread cancellation points.
           setDoesNotCapture(F, 2);
@@ -2436,9 +2436,9 @@
           setDoesNotThrow(F);
         } else if (Name == "popen") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getReturnType()) ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getReturnType()->isPointerTy() ||
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
@@ -2446,7 +2446,7 @@
           setDoesNotCapture(F, 2);
         } else if (Name == "pclose") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2455,43 +2455,43 @@
       case 'v':
         if (Name == "vscanf") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
         } else if (Name == "vsscanf" ||
                    Name == "vfscanf") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(1)) ||
-              !isa<PointerType>(FTy->getParamType(2)))
+              !FTy->getParamType(1)->isPointerTy() ||
+              !FTy->getParamType(2)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
           setDoesNotCapture(F, 2);
         } else if (Name == "valloc") {
-          if (!isa<PointerType>(FTy->getReturnType()))
+          if (!FTy->getReturnType()->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
         } else if (Name == "vprintf") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
         } else if (Name == "vfprintf" ||
                    Name == "vsprintf") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
           setDoesNotCapture(F, 2);
         } else if (Name == "vsnprintf") {
           if (FTy->getNumParams() != 4 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(2)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(2)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2501,14 +2501,14 @@
       case 'o':
         if (Name == "open") {
           if (FTy->getNumParams() < 2 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           // May throw; "open" is a valid pthread cancellation point.
           setDoesNotCapture(F, 1);
         } else if (Name == "opendir") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getReturnType()) ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getReturnType()->isPointerTy() ||
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
@@ -2517,13 +2517,13 @@
         break;
       case 't':
         if (Name == "tmpfile") {
-          if (!isa<PointerType>(FTy->getReturnType()))
+          if (!FTy->getReturnType()->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
         } else if (Name == "times") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2546,15 +2546,15 @@
       case 'l':
         if (Name == "lstat") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
           setDoesNotCapture(F, 2);
         } else if (Name == "lchown") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2563,7 +2563,7 @@
       case 'q':
         if (Name == "qsort") {
           if (FTy->getNumParams() != 4 ||
-              !isa<PointerType>(FTy->getParamType(3)))
+              !FTy->getParamType(3)->isPointerTy())
             continue;
           // May throw; places call through function pointer.
           setDoesNotCapture(F, 4);
@@ -2573,27 +2573,27 @@
         if (Name == "__strdup" ||
             Name == "__strndup") {
           if (FTy->getNumParams() < 1 ||
-              !isa<PointerType>(FTy->getReturnType()) ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getReturnType()->isPointerTy() ||
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
           setDoesNotCapture(F, 1);
         } else if (Name == "__strtok_r") {
           if (FTy->getNumParams() != 3 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 2);
         } else if (Name == "_IO_getc") {
           if (FTy->getNumParams() != 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
         } else if (Name == "_IO_putc") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 2);
@@ -2602,7 +2602,7 @@
       case 1:
         if (Name == "\1__isoc99_scanf") {
           if (FTy->getNumParams() < 1 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
@@ -2611,17 +2611,17 @@
                    Name == "\1statvfs64" ||
                    Name == "\1__isoc99_sscanf") {
           if (FTy->getNumParams() < 1 ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
           setDoesNotCapture(F, 2);
         } else if (Name == "\1fopen64") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getReturnType()) ||
-              !isa<PointerType>(FTy->getParamType(0)) ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getReturnType()->isPointerTy() ||
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
@@ -2630,25 +2630,25 @@
         } else if (Name == "\1fseeko64" ||
                    Name == "\1ftello64") {
           if (FTy->getNumParams() == 0 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
         } else if (Name == "\1tmpfile64") {
-          if (!isa<PointerType>(FTy->getReturnType()))
+          if (!FTy->getReturnType()->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotAlias(F, 0);
         } else if (Name == "\1fstat64" ||
                    Name == "\1fstatvfs64") {
           if (FTy->getNumParams() != 2 ||
-              !isa<PointerType>(FTy->getParamType(1)))
+              !FTy->getParamType(1)->isPointerTy())
             continue;
           setDoesNotThrow(F);
           setDoesNotCapture(F, 2);
         } else if (Name == "\1open64") {
           if (FTy->getNumParams() < 2 ||
-              !isa<PointerType>(FTy->getParamType(0)))
+              !FTy->getParamType(0)->isPointerTy())
             continue;
           // May throw; "open" is a valid pthread cancellation point.
           setDoesNotCapture(F, 1);
diff --git a/lib/Transforms/Utils/AddrModeMatcher.cpp b/lib/Transforms/Utils/AddrModeMatcher.cpp
index 8c4aa59..be6b383 100644
--- a/lib/Transforms/Utils/AddrModeMatcher.cpp
+++ b/lib/Transforms/Utils/AddrModeMatcher.cpp
@@ -125,7 +125,7 @@
     // Don't touch identity bitcasts.
     if (I->getType() == I->getOperand(0)->getType())
       return false;
-    return isa<PointerType>(I->getType()) || isa<IntegerType>(I->getType());
+    return I->getType()->isPointerTy() || I->getType()->isIntegerTy();
   case Instruction::PtrToInt:
     // PtrToInt is always a noop, as we know that the int type is pointer sized.
     return true;
@@ -167,8 +167,8 @@
   case Instruction::BitCast:
     // BitCast is always a noop, and we can handle it as long as it is
     // int->int or pointer->pointer (we don't want int<->fp or something).
-    if ((isa<PointerType>(AddrInst->getOperand(0)->getType()) ||
-         isa<IntegerType>(AddrInst->getOperand(0)->getType())) &&
+    if ((AddrInst->getOperand(0)->getType()->isPointerTy() ||
+         AddrInst->getOperand(0)->getType()->isIntegerTy()) &&
         // Don't touch identity bitcasts.  These were probably put here by LSR,
         // and we don't want to mess around with them.  Assume it knows what it
         // is doing.
@@ -569,7 +569,7 @@
     // Get the access type of this use.  If the use isn't a pointer, we don't
     // know what it accesses.
     Value *Address = User->getOperand(OpNo);
-    if (!isa<PointerType>(Address->getType()))
+    if (!Address->getType()->isPointerTy())
       return false;
     const Type *AddressAccessTy =
       cast<PointerType>(Address->getType())->getElementType();
diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp
index 57ad459..d03f7a6 100644
--- a/lib/Transforms/Utils/Local.cpp
+++ b/lib/Transforms/Utils/Local.cpp
@@ -46,7 +46,7 @@
 static Value *getUnderlyingObjectWithOffset(Value *V, const TargetData *TD,
                                             uint64_t &ByteOffset,
                                             unsigned MaxLookup = 6) {
-  if (!isa<PointerType>(V->getType()))
+  if (!V->getType()->isPointerTy())
     return V;
   for (unsigned Count = 0; MaxLookup == 0 || Count < MaxLookup; ++Count) {
     if (GEPOperator *GEP = dyn_cast<GEPOperator>(V)) {
@@ -65,7 +65,7 @@
     } else {
       return V;
     }
-    assert(isa<PointerType>(V->getType()) && "Unexpected operand type!");
+    assert(V->getType()->isPointerTy() && "Unexpected operand type!");
   }
   return V;
 }
diff --git a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
index 544e20b..4f5a70b 100644
--- a/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
+++ b/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
@@ -518,7 +518,7 @@
       
       // If this PHI node merges one value and/or undefs, get the value.
       if (Value *V = PN->hasConstantValue(&DT)) {
-        if (AST && isa<PointerType>(PN->getType()))
+        if (AST && PN->getType()->isPointerTy())
           AST->deleteValue(PN);
         PN->replaceAllUsesWith(V);
         PN->eraseFromParent();
@@ -780,7 +780,7 @@
     if (ReplVal == LI)
       ReplVal = UndefValue::get(LI->getType());
     LI->replaceAllUsesWith(ReplVal);
-    if (AST && isa<PointerType>(LI->getType()))
+    if (AST && LI->getType()->isPointerTy())
       AST->deleteValue(LI);
     LI->eraseFromParent();
     LBI.deleteValue(LI);
@@ -838,7 +838,7 @@
     for (Value::use_iterator UI = AI->use_begin(), E = AI->use_end(); UI != E;) 
       if (LoadInst *LI = dyn_cast<LoadInst>(*UI++)) {
         LI->replaceAllUsesWith(UndefValue::get(LI->getType()));
-        if (AST && isa<PointerType>(LI->getType()))
+        if (AST && LI->getType()->isPointerTy())
           AST->deleteValue(LI);
         LBI.deleteValue(LI);
         LI->eraseFromParent();
@@ -874,7 +874,7 @@
     // Otherwise, there was a store before this load, the load takes its value.
     --I;
     LI->replaceAllUsesWith(I->second->getOperand(0));
-    if (AST && isa<PointerType>(LI->getType()))
+    if (AST && LI->getType()->isPointerTy())
       AST->deleteValue(LI);
     LI->eraseFromParent();
     LBI.deleteValue(LI);
@@ -922,7 +922,7 @@
   
   InsertedPHINodes.insert(PN);
 
-  if (AST && isa<PointerType>(PN->getType()))
+  if (AST && PN->getType()->isPointerTy())
     AST->copyValue(PointerAllocaValues[AllocaNo], PN);
 
   return true;
@@ -996,7 +996,7 @@
 
       // Anything using the load now uses the current value.
       LI->replaceAllUsesWith(V);
-      if (AST && isa<PointerType>(LI->getType()))
+      if (AST && LI->getType()->isPointerTy())
         AST->deleteValue(LI);
       BB->getInstList().erase(LI);
     } else if (StoreInst *SI = dyn_cast<StoreInst>(I)) {
diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp
index 2215059..f343c38 100644
--- a/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -271,7 +271,7 @@
 ConstantInt *SimplifyCFGOpt::GetConstantInt(Value *V) {
   // Normal constant int.
   ConstantInt *CI = dyn_cast<ConstantInt>(V);
-  if (CI || !TD || !isa<Constant>(V) || !isa<PointerType>(V->getType()))
+  if (CI || !TD || !isa<Constant>(V) || !V->getType()->isPointerTy())
     return CI;
 
   // This is some kind of pointer constant. Turn it into a pointer-sized
@@ -701,7 +701,7 @@
         AddPredecessorToBlock(NewSuccessors[i], Pred, BB);
 
       // Convert pointer to int before we switch.
-      if (isa<PointerType>(CV->getType())) {
+      if (CV->getType()->isPointerTy()) {
         assert(TD && "Cannot switch on pointer without TargetData");
         CV = new PtrToIntInst(CV, TD->getIntPtrType(CV->getContext()),
                               "magicptr", PTI);
@@ -915,7 +915,7 @@
   case Instruction::Add:
   case Instruction::Sub:
     // Not worth doing for vector ops.
-    if (isa<VectorType>(HInst->getType()))
+    if (HInst->getType()->isVectorTy())
       return false;
     break;
   case Instruction::And:
@@ -925,7 +925,7 @@
   case Instruction::LShr:
   case Instruction::AShr:
     // Don't mess with vector operations.
-    if (isa<VectorType>(HInst->getType()))
+    if (HInst->getType()->isVectorTy())
       return false;
     break;   // These are all cheap and non-trapping instructions.
   }
@@ -2068,7 +2068,7 @@
           if (!TrueWhenEqual) std::swap(DefaultBB, EdgeBB);
 
           // Convert pointer to int before we switch.
-          if (isa<PointerType>(CompVal->getType())) {
+          if (CompVal->getType()->isPointerTy()) {
             assert(TD && "Cannot switch on pointer without TargetData");
             CompVal = new PtrToIntInst(CompVal,
                                        TD->getIntPtrType(CompVal->getContext()),
diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp
index f5ba7e7b..82e9a6a 100644
--- a/lib/VMCore/AsmWriter.cpp
+++ b/lib/VMCore/AsmWriter.cpp
@@ -376,7 +376,7 @@
         return;
 
       // If this is a structure or opaque type, add a name for the type.
-      if (((isa<StructType>(Ty) && cast<StructType>(Ty)->getNumElements())
+      if (((Ty->isStructTy() && cast<StructType>(Ty)->getNumElements())
             || isa<OpaqueType>(Ty)) && !TP.hasTypeName(Ty)) {
         TP.addTypeName(Ty, "%"+utostr(unsigned(NumberedTypes.size())));
         NumberedTypes.push_back(Ty);
@@ -1850,8 +1850,8 @@
     //
     Out << ' ';
     if (!FTy->isVarArg() &&
-        (!isa<PointerType>(RetTy) ||
-         !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
+        (!RetTy->isPointerTy() ||
+         !cast<PointerType>(RetTy)->getElementType()->isFunctionTy())) {
       TypePrinter.print(RetTy, Out);
       Out << ' ';
       writeOperand(Operand, false);
@@ -1896,8 +1896,8 @@
     //
     Out << ' ';
     if (!FTy->isVarArg() &&
-        (!isa<PointerType>(RetTy) ||
-         !isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
+        (!RetTy->isPointerTy() ||
+         !cast<PointerType>(RetTy)->getElementType()->isFunctionTy())) {
       TypePrinter.print(RetTy, Out);
       Out << ' ';
       writeOperand(Operand, false);
diff --git a/lib/VMCore/Attributes.cpp b/lib/VMCore/Attributes.cpp
index ff0cc9b..a000aee 100644
--- a/lib/VMCore/Attributes.cpp
+++ b/lib/VMCore/Attributes.cpp
@@ -93,7 +93,7 @@
     // Attributes that only apply to integers.
     Incompatible |= SExt | ZExt;
   
-  if (!isa<PointerType>(Ty))
+  if (!Ty->isPointerTy())
     // Attributes that only apply to pointers.
     Incompatible |= ByVal | Nest | NoAlias | StructRet | NoCapture;
   
diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp
index 78a45e8..2618168 100644
--- a/lib/VMCore/ConstantFold.cpp
+++ b/lib/VMCore/ConstantFold.cpp
@@ -112,7 +112,7 @@
             IdxList.push_back(Zero);
           } else if (const SequentialType *STy = 
                      dyn_cast<SequentialType>(ElTy)) {
-            if (isa<PointerType>(ElTy)) break;  // Can't index into pointers!
+            if (ElTy->isPointerTy()) break;  // Can't index into pointers!
             ElTy = STy->getElementType();
             IdxList.push_back(Zero);
           } else {
@@ -189,7 +189,7 @@
 /// 
 static Constant *ExtractConstantBytes(Constant *C, unsigned ByteStart,
                                       unsigned ByteSize) {
-  assert(isa<IntegerType>(C->getType()) &&
+  assert(C->getType()->isIntegerTy() &&
          (cast<IntegerType>(C->getType())->getBitWidth() & 7) == 0 &&
          "Non-byte sized integer input");
   unsigned CSize = cast<IntegerType>(C->getType())->getBitWidth()/8;
@@ -551,7 +551,7 @@
   // operating on each element. In the cast of bitcasts, the element
   // count may be mismatched; don't attempt to handle that here.
   if (ConstantVector *CV = dyn_cast<ConstantVector>(V))
-    if (isa<VectorType>(DestTy) &&
+    if (DestTy->isVectorTy() &&
         cast<VectorType>(DestTy)->getNumElements() ==
         CV->getType()->getNumElements()) {
       std::vector<Constant*> res;
@@ -634,7 +634,7 @@
               }
             }
           // Handle an offsetof-like expression.
-          if (isa<StructType>(Ty) || isa<ArrayType>(Ty) || isa<VectorType>(Ty)){
+          if (Ty->isStructTy() || Ty->isArrayTy() || Ty->isVectorTy()){
             if (Constant *C = getFoldedOffsetOf(Ty, CE->getOperand(2),
                                                 DestTy, false))
               return C;
@@ -885,7 +885,7 @@
     unsigned numOps;
     if (const ArrayType *AR = dyn_cast<ArrayType>(AggTy))
       numOps = AR->getNumElements();
-    else if (isa<UnionType>(AggTy))
+    else if (AggTy->isUnionTy())
       numOps = 1;
     else
       numOps = cast<StructType>(AggTy)->getNumElements();
@@ -1667,7 +1667,7 @@
       // If the cast is not actually changing bits, and the second operand is a
       // null pointer, do the comparison with the pre-casted value.
       if (V2->isNullValue() &&
-          (isa<PointerType>(CE1->getType()) || CE1->getType()->isIntegerTy())) {
+          (CE1->getType()->isPointerTy() || CE1->getType()->isIntegerTy())) {
         if (CE1->getOpcode() == Instruction::ZExt) isSigned = false;
         if (CE1->getOpcode() == Instruction::SExt) isSigned = true;
         return evaluateICmpRelation(CE1Op0,
@@ -1914,7 +1914,7 @@
       return ConstantInt::get(ResultTy, R==APFloat::cmpGreaterThan ||
                                         R==APFloat::cmpEqual);
     }
-  } else if (isa<VectorType>(C1->getType())) {
+  } else if (C1->getType()->isVectorTy()) {
     SmallVector<Constant*, 16> C1Elts, C2Elts;
     C1->getVectorElements(C1Elts);
     C2->getVectorElements(C2Elts);
@@ -2065,7 +2065,7 @@
     if (ConstantExpr *CE2 = dyn_cast<ConstantExpr>(C2)) {
       Constant *CE2Op0 = CE2->getOperand(0);
       if (CE2->getOpcode() == Instruction::BitCast &&
-          isa<VectorType>(CE2->getType())==isa<VectorType>(CE2Op0->getType())) {
+          CE2->getType()->isVectorTy()==CE2Op0->getType()->isVectorTy()) {
         Constant *Inverse = ConstantExpr::getBitCast(C1, CE2Op0->getType());
         return ConstantExpr::getICmp(pred, Inverse, CE2Op0);
       }
@@ -2184,7 +2184,7 @@
            I != E; ++I)
         LastTy = *I;
 
-      if ((LastTy && isa<ArrayType>(LastTy)) || Idx0->isNullValue()) {
+      if ((LastTy && LastTy->isArrayTy()) || Idx0->isNullValue()) {
         SmallVector<Value*, 16> NewIndices;
         NewIndices.reserve(NumIdx + CE->getNumOperands());
         for (unsigned i = 1, e = CE->getNumOperands()-1; i != e; ++i)
diff --git a/lib/VMCore/Constants.cpp b/lib/VMCore/Constants.cpp
index 98040ea..37f670e 100644
--- a/lib/VMCore/Constants.cpp
+++ b/lib/VMCore/Constants.cpp
@@ -229,7 +229,7 @@
 /// This handles breaking down a vector undef into undef elements, etc.  For
 /// constant exprs and other cases we can't handle, we return an empty vector.
 void Constant::getVectorElements(SmallVectorImpl<Constant*> &Elts) const {
-  assert(isa<VectorType>(getType()) && "Not a vector constant!");
+  assert(getType()->isVectorTy() && "Not a vector constant!");
   
   if (const ConstantVector *CV = dyn_cast<ConstantVector>(this)) {
     for (unsigned i = 0, e = CV->getNumOperands(); i != e; ++i)
@@ -944,7 +944,7 @@
 //                      Factory Function Implementation
 
 ConstantAggregateZero* ConstantAggregateZero::get(const Type* Ty) {
-  assert((isa<StructType>(Ty) || isa<ArrayType>(Ty) || isa<VectorType>(Ty)) &&
+  assert((Ty->isStructTy() || Ty->isArrayTy() || Ty->isVectorTy()) &&
          "Cannot create an aggregate zero of non-aggregate type!");
   
   LLVMContextImpl *pImpl = Ty->getContext().pImpl;
@@ -1239,8 +1239,8 @@
 }
 
 Constant *ConstantExpr::getPointerCast(Constant *S, const Type *Ty) {
-  assert(isa<PointerType>(S->getType()) && "Invalid cast");
-  assert((Ty->isIntegerTy() || isa<PointerType>(Ty)) && "Invalid cast");
+  assert(S->getType()->isPointerTy() && "Invalid cast");
+  assert((Ty->isIntegerTy() || Ty->isPointerTy()) && "Invalid cast");
 
   if (Ty->isIntegerTy())
     return getCast(Instruction::PtrToInt, S, Ty);
@@ -1383,14 +1383,14 @@
 }
 
 Constant *ConstantExpr::getPtrToInt(Constant *C, const Type *DstTy) {
-  assert(isa<PointerType>(C->getType()) && "PtrToInt source must be pointer");
+  assert(C->getType()->isPointerTy() && "PtrToInt source must be pointer");
   assert(DstTy->isIntegerTy() && "PtrToInt destination must be integral");
   return getFoldedCast(Instruction::PtrToInt, C, DstTy);
 }
 
 Constant *ConstantExpr::getIntToPtr(Constant *C, const Type *DstTy) {
   assert(C->getType()->isIntegerTy() && "IntToPtr source must be integral");
-  assert(isa<PointerType>(DstTy) && "IntToPtr destination must be a pointer");
+  assert(DstTy->isPointerTy() && "IntToPtr destination must be a pointer");
   return getFoldedCast(Instruction::IntToPtr, C, DstTy);
 }
 
@@ -1592,7 +1592,7 @@
                                                (Constant**)Idxs, NumIdx))
     return FC;          // Fold a few common cases...
 
-  assert(isa<PointerType>(C->getType()) &&
+  assert(C->getType()->isPointerTy() &&
          "Non-pointer type for constant GetElementPtr expression");
   // Look up the constant in the table first to ensure uniqueness
   std::vector<Constant*> ArgVec;
@@ -1619,7 +1619,7 @@
                                                (Constant**)Idxs, NumIdx))
     return FC;          // Fold a few common cases...
 
-  assert(isa<PointerType>(C->getType()) &&
+  assert(C->getType()->isPointerTy() &&
          "Non-pointer type for constant GetElementPtr expression");
   // Look up the constant in the table first to ensure uniqueness
   std::vector<Constant*> ArgVec;
@@ -1727,7 +1727,7 @@
 }
 
 Constant *ConstantExpr::getExtractElement(Constant *Val, Constant *Idx) {
-  assert(isa<VectorType>(Val->getType()) &&
+  assert(Val->getType()->isVectorTy() &&
          "Tried to create extractelement operation on non-vector type!");
   assert(Idx->getType()->isIntegerTy(32) &&
          "Extractelement index must be i32 type!");
@@ -1751,7 +1751,7 @@
 
 Constant *ConstantExpr::getInsertElement(Constant *Val, Constant *Elt, 
                                          Constant *Idx) {
-  assert(isa<VectorType>(Val->getType()) &&
+  assert(Val->getType()->isVectorTy() &&
          "Tried to create insertelement operation on non-vector type!");
   assert(Elt->getType() == cast<VectorType>(Val->getType())->getElementType()
          && "Insertelement types must match!");
diff --git a/lib/VMCore/Function.cpp b/lib/VMCore/Function.cpp
index f00f6ee..5af5510 100644
--- a/lib/VMCore/Function.cpp
+++ b/lib/VMCore/Function.cpp
@@ -73,35 +73,35 @@
 /// hasByValAttr - Return true if this argument has the byval attribute on it
 /// in its containing function.
 bool Argument::hasByValAttr() const {
-  if (!isa<PointerType>(getType())) return false;
+  if (!getType()->isPointerTy()) return false;
   return getParent()->paramHasAttr(getArgNo()+1, Attribute::ByVal);
 }
 
 /// hasNestAttr - Return true if this argument has the nest attribute on
 /// it in its containing function.
 bool Argument::hasNestAttr() const {
-  if (!isa<PointerType>(getType())) return false;
+  if (!getType()->isPointerTy()) return false;
   return getParent()->paramHasAttr(getArgNo()+1, Attribute::Nest);
 }
 
 /// hasNoAliasAttr - Return true if this argument has the noalias attribute on
 /// it in its containing function.
 bool Argument::hasNoAliasAttr() const {
-  if (!isa<PointerType>(getType())) return false;
+  if (!getType()->isPointerTy()) return false;
   return getParent()->paramHasAttr(getArgNo()+1, Attribute::NoAlias);
 }
 
 /// hasNoCaptureAttr - Return true if this argument has the nocapture attribute
 /// on it in its containing function.
 bool Argument::hasNoCaptureAttr() const {
-  if (!isa<PointerType>(getType())) return false;
+  if (!getType()->isPointerTy()) return false;
   return getParent()->paramHasAttr(getArgNo()+1, Attribute::NoCapture);
 }
 
 /// hasSRetAttr - Return true if this argument has the sret attribute on
 /// it in its containing function.
 bool Argument::hasStructRetAttr() const {
-  if (!isa<PointerType>(getType())) return false;
+  if (!getType()->isPointerTy()) return false;
   if (this != getParent()->arg_begin())
     return false; // StructRet param must be first param
   return getParent()->paramHasAttr(1, Attribute::StructRet);
diff --git a/lib/VMCore/InlineAsm.cpp b/lib/VMCore/InlineAsm.cpp
index ec21773..6355834 100644
--- a/lib/VMCore/InlineAsm.cpp
+++ b/lib/VMCore/InlineAsm.cpp
@@ -220,7 +220,7 @@
     if (!Ty->getReturnType()->isVoidTy()) return false;
     break;
   case 1:
-    if (isa<StructType>(Ty->getReturnType())) return false;
+    if (Ty->getReturnType()->isStructTy()) return false;
     break;
   default:
     const StructType *STy = dyn_cast<StructType>(Ty->getReturnType());
diff --git a/lib/VMCore/Instructions.cpp b/lib/VMCore/Instructions.cpp
index 9d5f7a5..8f4763f 100644
--- a/lib/VMCore/Instructions.cpp
+++ b/lib/VMCore/Instructions.cpp
@@ -562,7 +562,7 @@
                                BasicBlock *InsertAtEnd) {
   assert(((!InsertBefore && InsertAtEnd) || (InsertBefore && !InsertAtEnd)) &&
          "createFree needs either InsertBefore or InsertAtEnd");
-  assert(isa<PointerType>(Source->getType()) &&
+  assert(Source->getType()->isPointerTy() &&
          "Can not free something of nonpointer type!");
 
   BasicBlock* BB = InsertBefore ? InsertBefore->getParent() : InsertAtEnd;
@@ -989,7 +989,7 @@
 //===----------------------------------------------------------------------===//
 
 void LoadInst::AssertOK() {
-  assert(isa<PointerType>(getOperand(0)->getType()) &&
+  assert(getOperand(0)->getType()->isPointerTy() &&
          "Ptr must have pointer type.");
 }
 
@@ -1103,7 +1103,7 @@
 
 void StoreInst::AssertOK() {
   assert(getOperand(0) && getOperand(1) && "Both operands must be non-null!");
-  assert(isa<PointerType>(getOperand(1)->getType()) &&
+  assert(getOperand(1)->getType()->isPointerTy() &&
          "Ptr must have pointer type!");
   assert(getOperand(0)->getType() ==
                  cast<PointerType>(getOperand(1)->getType())->getElementType()
@@ -1285,7 +1285,7 @@
   unsigned CurIdx = 1;
   for (; CurIdx != NumIdx; ++CurIdx) {
     const CompositeType *CT = dyn_cast<CompositeType>(Agg);
-    if (!CT || isa<PointerType>(CT)) return 0;
+    if (!CT || CT->isPointerTy()) return 0;
     IndexTy Index = Idxs[CurIdx];
     if (!CT->indexValid(Index)) return 0;
     Agg = CT->getTypeAtIndex(Index);
@@ -1391,7 +1391,7 @@
 
 
 bool ExtractElementInst::isValidOperands(const Value *Val, const Value *Index) {
-  if (!isa<VectorType>(Val->getType()) || !Index->getType()->isIntegerTy(32))
+  if (!Val->getType()->isVectorTy() || !Index->getType()->isIntegerTy(32))
     return false;
   return true;
 }
@@ -1432,7 +1432,7 @@
 
 bool InsertElementInst::isValidOperands(const Value *Vec, const Value *Elt, 
                                         const Value *Index) {
-  if (!isa<VectorType>(Vec->getType()))
+  if (!Vec->getType()->isVectorTy())
     return false;   // First operand of insertelement must be vector type.
   
   if (Elt->getType() != cast<VectorType>(Vec->getType())->getElementType())
@@ -1485,7 +1485,7 @@
 
 bool ShuffleVectorInst::isValidOperands(const Value *V1, const Value *V2,
                                         const Value *Mask) {
-  if (!isa<VectorType>(V1->getType()) || V1->getType() != V2->getType())
+  if (!V1->getType()->isVectorTy() || V1->getType() != V2->getType())
     return false;
   
   const VectorType *MaskTy = dyn_cast<VectorType>(Mask->getType());
@@ -1602,7 +1602,7 @@
   unsigned CurIdx = 0;
   for (; CurIdx != NumIdx; ++CurIdx) {
     const CompositeType *CT = dyn_cast<CompositeType>(Agg);
-    if (!CT || isa<PointerType>(CT) || isa<VectorType>(CT)) return 0;
+    if (!CT || CT->isPointerTy() || CT->isVectorTy()) return 0;
     unsigned Index = Idxs[CurIdx];
     if (!CT->indexValid(Index)) return 0;
     Agg = CT->getTypeAtIndex(Index);
@@ -1693,7 +1693,7 @@
   case SDiv: 
     assert(getType() == LHS->getType() &&
            "Arithmetic operation should return same type as operands!");
-    assert((getType()->isIntegerTy() || (isa<VectorType>(getType()) && 
+    assert((getType()->isIntegerTy() || (getType()->isVectorTy() && 
             cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
            "Incorrect operand type (not integer) for S/UDIV");
     break;
@@ -1707,7 +1707,7 @@
   case SRem: 
     assert(getType() == LHS->getType() &&
            "Arithmetic operation should return same type as operands!");
-    assert((getType()->isIntegerTy() || (isa<VectorType>(getType()) && 
+    assert((getType()->isIntegerTy() || (getType()->isVectorTy() && 
             cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
            "Incorrect operand type (not integer) for S/UREM");
     break;
@@ -1723,7 +1723,7 @@
     assert(getType() == LHS->getType() &&
            "Shift operation should return same type as operands!");
     assert((getType()->isIntegerTy() ||
-            (isa<VectorType>(getType()) && 
+            (getType()->isVectorTy() && 
              cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
            "Tried to create a shift operation on a non-integral type!");
     break;
@@ -1732,7 +1732,7 @@
     assert(getType() == LHS->getType() &&
            "Logical operation should return same type as operands!");
     assert((getType()->isIntegerTy() ||
-            (isa<VectorType>(getType()) && 
+            (getType()->isVectorTy() && 
              cast<VectorType>(getType())->getElementType()->isIntegerTy())) &&
            "Tried to create a logical operation on a non-integral type!");
     break;
@@ -1977,8 +1977,8 @@
     return true;
   
   // Pointer to pointer is always lossless.
-  if (isa<PointerType>(SrcTy))
-    return isa<PointerType>(DstTy);
+  if (SrcTy->isPointerTy())
+    return DstTy->isPointerTy();
   return false;  // Other types have no identity values
 }
 
@@ -2094,7 +2094,7 @@
       // no-op cast in second op implies firstOp as long as the DestTy 
       // is integer and we are not converting between a vector and a
       // non vector type.
-      if (!isa<VectorType>(SrcTy) && DstTy->isIntegerTy())
+      if (!SrcTy->isVectorTy() && DstTy->isIntegerTy())
         return firstOp;
       return 0;
     case 4:
@@ -2148,12 +2148,12 @@
     case 11:
       // bitcast followed by ptrtoint is allowed as long as the bitcast
       // is a pointer to pointer cast.
-      if (isa<PointerType>(SrcTy) && isa<PointerType>(MidTy))
+      if (SrcTy->isPointerTy() && MidTy->isPointerTy())
         return secondOp;
       return 0;
     case 12:
       // inttoptr, bitcast -> intptr  if bitcast is a ptr to ptr cast
-      if (isa<PointerType>(MidTy) && isa<PointerType>(DstTy))
+      if (MidTy->isPointerTy() && DstTy->isPointerTy())
         return firstOp;
       return 0;
     case 13: {
@@ -2274,8 +2274,8 @@
 CastInst *CastInst::CreatePointerCast(Value *S, const Type *Ty,
                                       const Twine &Name,
                                       BasicBlock *InsertAtEnd) {
-  assert(isa<PointerType>(S->getType()) && "Invalid cast");
-  assert((Ty->isIntegerTy() || isa<PointerType>(Ty)) &&
+  assert(S->getType()->isPointerTy() && "Invalid cast");
+  assert((Ty->isIntegerTy() || Ty->isPointerTy()) &&
          "Invalid cast");
 
   if (Ty->isIntegerTy())
@@ -2287,8 +2287,8 @@
 CastInst *CastInst::CreatePointerCast(Value *S, const Type *Ty, 
                                       const Twine &Name, 
                                       Instruction *InsertBefore) {
-  assert(isa<PointerType>(S->getType()) && "Invalid cast");
-  assert((Ty->isIntegerTy() || isa<PointerType>(Ty)) &&
+  assert(S->getType()->isPointerTy() && "Invalid cast");
+  assert((Ty->isIntegerTy() || Ty->isPointerTy()) &&
          "Invalid cast");
 
   if (Ty->isIntegerTy())
@@ -2373,7 +2373,7 @@
                                                // Casting from vector
       return DestBits == PTy->getBitWidth();
     } else {                                   // Casting from something else
-      return isa<PointerType>(SrcTy);
+      return SrcTy->isPointerTy();
     }
   } else if (DestTy->isFloatingPointTy()) {      // Casting to floating pt
     if (SrcTy->isIntegerTy()) {                  // Casting from integral
@@ -2394,8 +2394,8 @@
     } else {                                    // Casting from something else
       return DestPTy->getBitWidth() == SrcBits;
     }
-  } else if (isa<PointerType>(DestTy)) {        // Casting to pointer
-    if (isa<PointerType>(SrcTy)) {              // Casting from pointer
+  } else if (DestTy->isPointerTy()) {        // Casting to pointer
+    if (SrcTy->isPointerTy()) {              // Casting from pointer
       return true;
     } else if (SrcTy->isIntegerTy()) {            // Casting from integral
       return true;
@@ -2449,7 +2449,7 @@
       PTy = NULL;
       return BitCast;                             // Same size, no-op cast
     } else {
-      assert(isa<PointerType>(SrcTy) &&
+      assert(SrcTy->isPointerTy() &&
              "Casting from a value that is not first-class type");
       return PtrToInt;                              // ptr -> int
     }
@@ -2486,8 +2486,8 @@
     } else {
       assert(!"Illegal cast to vector (wrong type or size)");
     }
-  } else if (isa<PointerType>(DestTy)) {
-    if (isa<PointerType>(SrcTy)) {
+  } else if (DestTy->isPointerTy()) {
+    if (SrcTy->isPointerTy()) {
       return BitCast;                               // ptr -> ptr
     } else if (SrcTy->isIntegerTy()) {
       return IntToPtr;                              // int -> ptr
@@ -2566,13 +2566,13 @@
     }
     return SrcTy->isFPOrFPVectorTy() && DstTy->isIntOrIntVectorTy();
   case Instruction::PtrToInt:
-    return isa<PointerType>(SrcTy) && DstTy->isIntegerTy();
+    return SrcTy->isPointerTy() && DstTy->isIntegerTy();
   case Instruction::IntToPtr:
-    return SrcTy->isIntegerTy() && isa<PointerType>(DstTy);
+    return SrcTy->isIntegerTy() && DstTy->isPointerTy();
   case Instruction::BitCast:
     // BitCast implies a no-op cast of type only. No bits change.
     // However, you can't cast pointers to anything but pointers.
-    if (isa<PointerType>(SrcTy) != isa<PointerType>(DstTy))
+    if (SrcTy->isPointerTy() != DstTy->isPointerTy())
       return false;
 
     // Now we know we're not dealing with a pointer/non-pointer mismatch. In all
@@ -3150,7 +3150,7 @@
 //===----------------------------------------------------------------------===//
 
 void IndirectBrInst::init(Value *Address, unsigned NumDests) {
-  assert(Address && isa<PointerType>(Address->getType()) &&
+  assert(Address && Address->getType()->isPointerTy() &&
          "Address of indirectbr must be a pointer");
   ReservedSpace = 1+NumDests;
   NumOperands = 1;
diff --git a/lib/VMCore/Type.cpp b/lib/VMCore/Type.cpp
index f4cd366..c9987c3 100644
--- a/lib/VMCore/Type.cpp
+++ b/lib/VMCore/Type.cpp
@@ -61,8 +61,8 @@
   // Structures and Functions allocate their contained types past the end of
   // the type object itself. These need to be destroyed differently than the
   // other types.
-  if (isa<FunctionType>(this) || isa<StructType>(this) ||
-      isa<UnionType>(this)) {
+  if (this->isFunctionTy() || this->isStructTy() ||
+      this->isUnionTy()) {
     // First, make sure we destruct any PATypeHandles allocated by these
     // subclasses.  They must be manually destructed. 
     for (unsigned i = 0; i < NumContainedTys; ++i)
@@ -70,9 +70,9 @@
 
     // Now call the destructor for the subclass directly because we're going
     // to delete this as an array of char.
-    if (isa<FunctionType>(this))
+    if (this->isFunctionTy())
       static_cast<const FunctionType*>(this)->FunctionType::~FunctionType();
-    else if (isa<StructType>(this))
+    else if (this->isStructTy())
       static_cast<const StructType*>(this)->StructType::~StructType();
     else
       static_cast<const UnionType*>(this)->UnionType::~UnionType();
@@ -176,8 +176,8 @@
   // At this point we have only various mismatches of the first class types
   // remaining and ptr->ptr. Just select the lossless conversions. Everything
   // else is not lossless.
-  if (isa<PointerType>(this))
-    return isa<PointerType>(Ty);
+  if (this->isPointerTy())
+    return Ty->isPointerTy();
   return false;  // Other types have no identity values
 }
 
@@ -220,7 +220,7 @@
 /// iff all of the members of the type are sized as well.  Since asking for
 /// their size is relatively uncommon, move this operation out of line.
 bool Type::isSizedDerivedType() const {
-  if (isa<IntegerType>(this))
+  if (this->isIntegerTy())
     return true;
 
   if (const ArrayType *ATy = dyn_cast<ArrayType>(this))
@@ -229,7 +229,7 @@
   if (const VectorType *PTy = dyn_cast<VectorType>(this))
     return PTy->getElementType()->isSized();
 
-  if (!isa<StructType>(this) && !isa<UnionType>(this)) 
+  if (!this->isStructTy() && !this->isUnionTy()) 
     return false;
 
   // Okay, our struct is sized if all of the elements are...
@@ -888,7 +888,7 @@
 
 bool ArrayType::isValidElementType(const Type *ElemTy) {
   return ElemTy->getTypeID() != VoidTyID && ElemTy->getTypeID() != LabelTyID &&
-         ElemTy->getTypeID() != MetadataTyID && !isa<FunctionType>(ElemTy);
+         ElemTy->getTypeID() != MetadataTyID && !ElemTy->isFunctionTy();
 }
 
 VectorType *VectorType::get(const Type *ElementType, unsigned NumElements) {
@@ -955,7 +955,7 @@
 
 bool StructType::isValidElementType(const Type *ElemTy) {
   return !ElemTy->isVoidTy() && !ElemTy->isLabelTy() &&
-         !ElemTy->isMetadataTy() && !isa<FunctionType>(ElemTy);
+         !ElemTy->isMetadataTy() && !ElemTy->isFunctionTy();
 }
 
 
@@ -1303,7 +1303,7 @@
 }
 
 bool SequentialType::indexValid(const Value *V) const {
-  if (isa<IntegerType>(V->getType())) 
+  if (V->getType()->isIntegerTy()) 
     return true;
   return false;
 }
diff --git a/lib/VMCore/Value.cpp b/lib/VMCore/Value.cpp
index 3759b8a..1cc3d54 100644
--- a/lib/VMCore/Value.cpp
+++ b/lib/VMCore/Value.cpp
@@ -45,7 +45,7 @@
     UseList(0), Name(0) {
   if (isa<CallInst>(this) || isa<InvokeInst>(this))
     assert((VTy->isFirstClassType() || VTy->isVoidTy() ||
-            isa<OpaqueType>(ty) || VTy->getTypeID() == Type::StructTyID) &&
+            isa<OpaqueType>(ty) || VTy->isStructTy()) &&
            "invalid CallInst  type!");
   else if (!isa<Constant>(this) && !isa<BasicBlock>(this))
     assert((VTy->isFirstClassType() || VTy->isVoidTy() ||
@@ -320,7 +320,7 @@
 }
 
 Value *Value::stripPointerCasts() {
-  if (!isa<PointerType>(getType()))
+  if (!getType()->isPointerTy())
     return this;
   Value *V = this;
   do {
@@ -337,12 +337,12 @@
     } else {
       return V;
     }
-    assert(isa<PointerType>(V->getType()) && "Unexpected operand type!");
+    assert(V->getType()->isPointerTy() && "Unexpected operand type!");
   } while (1);
 }
 
 Value *Value::getUnderlyingObject(unsigned MaxLookup) {
-  if (!isa<PointerType>(getType()))
+  if (!getType()->isPointerTy())
     return this;
   Value *V = this;
   for (unsigned Count = 0; MaxLookup == 0 || Count < MaxLookup; ++Count) {
@@ -357,7 +357,7 @@
     } else {
       return V;
     }
-    assert(isa<PointerType>(V->getType()) && "Unexpected operand type!");
+    assert(V->getType()->isPointerTy() && "Unexpected operand type!");
   }
   return V;
 }
diff --git a/lib/VMCore/ValueTypes.cpp b/lib/VMCore/ValueTypes.cpp
index 62b9034..eff8dec 100644
--- a/lib/VMCore/ValueTypes.cpp
+++ b/lib/VMCore/ValueTypes.cpp
@@ -46,7 +46,7 @@
 
 bool EVT::isExtendedVector() const {
   assert(isExtended() && "Type is not extended!");
-  return isa<VectorType>(LLVMTy);
+  return LLVMTy->isVectorTy();
 }
 
 bool EVT::isExtended64BitVector() const {
diff --git a/lib/VMCore/Verifier.cpp b/lib/VMCore/Verifier.cpp
index 2b4892b..35625a5 100644
--- a/lib/VMCore/Verifier.cpp
+++ b/lib/VMCore/Verifier.cpp
@@ -433,7 +433,7 @@
 
   if (GV.hasAppendingLinkage()) {
     GlobalVariable *GVar = dyn_cast<GlobalVariable>(&GV);
-    Assert1(GVar && isa<ArrayType>(GVar->getType()->getElementType()),
+    Assert1(GVar && GVar->getType()->getElementType()->isArrayTy(),
             "Only global arrays can have appending linkage!", GVar);
   }
 }
@@ -609,7 +609,7 @@
           &F, FT);
   Assert1(F.getReturnType()->isFirstClassType() ||
           F.getReturnType()->isVoidTy() || 
-          isa<StructType>(F.getReturnType()),
+          F.getReturnType()->isStructTy(),
           "Functions cannot return aggregate values!", &F);
 
   Assert1(!F.hasStructRetAttr() || F.getReturnType()->isVoidTy(),
@@ -838,7 +838,7 @@
 
   Assert1(SrcTy->isIntOrIntVectorTy(), "Trunc only operates on integer", &I);
   Assert1(DestTy->isIntOrIntVectorTy(), "Trunc only produces integer", &I);
-  Assert1(isa<VectorType>(SrcTy) == isa<VectorType>(DestTy),
+  Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
           "trunc source and destination must both be a vector or neither", &I);
   Assert1(SrcBitSize > DestBitSize,"DestTy too big for Trunc", &I);
 
@@ -853,7 +853,7 @@
   // Get the size of the types in bits, we'll need this later
   Assert1(SrcTy->isIntOrIntVectorTy(), "ZExt only operates on integer", &I);
   Assert1(DestTy->isIntOrIntVectorTy(), "ZExt only produces an integer", &I);
-  Assert1(isa<VectorType>(SrcTy) == isa<VectorType>(DestTy),
+  Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
           "zext source and destination must both be a vector or neither", &I);
   unsigned SrcBitSize = SrcTy->getScalarSizeInBits();
   unsigned DestBitSize = DestTy->getScalarSizeInBits();
@@ -874,7 +874,7 @@
 
   Assert1(SrcTy->isIntOrIntVectorTy(), "SExt only operates on integer", &I);
   Assert1(DestTy->isIntOrIntVectorTy(), "SExt only produces an integer", &I);
-  Assert1(isa<VectorType>(SrcTy) == isa<VectorType>(DestTy),
+  Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
           "sext source and destination must both be a vector or neither", &I);
   Assert1(SrcBitSize < DestBitSize,"Type too small for SExt", &I);
 
@@ -891,7 +891,7 @@
 
   Assert1(SrcTy->isFPOrFPVectorTy(),"FPTrunc only operates on FP", &I);
   Assert1(DestTy->isFPOrFPVectorTy(),"FPTrunc only produces an FP", &I);
-  Assert1(isa<VectorType>(SrcTy) == isa<VectorType>(DestTy),
+  Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
           "fptrunc source and destination must both be a vector or neither",&I);
   Assert1(SrcBitSize > DestBitSize,"DestTy too big for FPTrunc", &I);
 
@@ -909,7 +909,7 @@
 
   Assert1(SrcTy->isFPOrFPVectorTy(),"FPExt only operates on FP", &I);
   Assert1(DestTy->isFPOrFPVectorTy(),"FPExt only produces an FP", &I);
-  Assert1(isa<VectorType>(SrcTy) == isa<VectorType>(DestTy),
+  Assert1(SrcTy->isVectorTy() == DestTy->isVectorTy(),
           "fpext source and destination must both be a vector or neither", &I);
   Assert1(SrcBitSize < DestBitSize,"DestTy too small for FPExt", &I);
 
@@ -921,8 +921,8 @@
   const Type *SrcTy = I.getOperand(0)->getType();
   const Type *DestTy = I.getType();
 
-  bool SrcVec = isa<VectorType>(SrcTy);
-  bool DstVec = isa<VectorType>(DestTy);
+  bool SrcVec = SrcTy->isVectorTy();
+  bool DstVec = DestTy->isVectorTy();
 
   Assert1(SrcVec == DstVec,
           "UIToFP source and dest must both be vector or scalar", &I);
@@ -944,8 +944,8 @@
   const Type *SrcTy = I.getOperand(0)->getType();
   const Type *DestTy = I.getType();
 
-  bool SrcVec = isa<VectorType>(SrcTy);
-  bool DstVec = isa<VectorType>(DestTy);
+  bool SrcVec = SrcTy->isVectorTy();
+  bool DstVec = DestTy->isVectorTy();
 
   Assert1(SrcVec == DstVec,
           "SIToFP source and dest must both be vector or scalar", &I);
@@ -967,8 +967,8 @@
   const Type *SrcTy = I.getOperand(0)->getType();
   const Type *DestTy = I.getType();
 
-  bool SrcVec = isa<VectorType>(SrcTy);
-  bool DstVec = isa<VectorType>(DestTy);
+  bool SrcVec = SrcTy->isVectorTy();
+  bool DstVec = DestTy->isVectorTy();
 
   Assert1(SrcVec == DstVec,
           "FPToUI source and dest must both be vector or scalar", &I);
@@ -990,8 +990,8 @@
   const Type *SrcTy = I.getOperand(0)->getType();
   const Type *DestTy = I.getType();
 
-  bool SrcVec = isa<VectorType>(SrcTy);
-  bool DstVec = isa<VectorType>(DestTy);
+  bool SrcVec = SrcTy->isVectorTy();
+  bool DstVec = DestTy->isVectorTy();
 
   Assert1(SrcVec == DstVec,
           "FPToSI source and dest must both be vector or scalar", &I);
@@ -1013,7 +1013,7 @@
   const Type *SrcTy = I.getOperand(0)->getType();
   const Type *DestTy = I.getType();
 
-  Assert1(isa<PointerType>(SrcTy), "PtrToInt source must be pointer", &I);
+  Assert1(SrcTy->isPointerTy(), "PtrToInt source must be pointer", &I);
   Assert1(DestTy->isIntegerTy(), "PtrToInt result must be integral", &I);
 
   visitInstruction(I);
@@ -1025,7 +1025,7 @@
   const Type *DestTy = I.getType();
 
   Assert1(SrcTy->isIntegerTy(), "IntToPtr source must be an integral", &I);
-  Assert1(isa<PointerType>(DestTy), "IntToPtr result must be a pointer",&I);
+  Assert1(DestTy->isPointerTy(), "IntToPtr result must be a pointer",&I);
 
   visitInstruction(I);
 }
@@ -1041,7 +1041,7 @@
 
   // BitCast implies a no-op cast of type only. No bits change.
   // However, you can't cast pointers to anything but pointers.
-  Assert1(isa<PointerType>(DestTy) == isa<PointerType>(DestTy),
+  Assert1(DestTy->isPointerTy() == DestTy->isPointerTy(),
           "Bitcast requires both operands to be pointer or neither", &I);
   Assert1(SrcBitSize == DestBitSize, "Bitcast requires types of same width",&I);
 
@@ -1084,11 +1084,11 @@
 void Verifier::VerifyCallSite(CallSite CS) {
   Instruction *I = CS.getInstruction();
 
-  Assert1(isa<PointerType>(CS.getCalledValue()->getType()),
+  Assert1(CS.getCalledValue()->getType()->isPointerTy(),
           "Called function must be a pointer!", I);
   const PointerType *FPTy = cast<PointerType>(CS.getCalledValue()->getType());
 
-  Assert1(isa<FunctionType>(FPTy->getElementType()),
+  Assert1(FPTy->getElementType()->isFunctionTy(),
           "Called function is not pointer to function type!", I);
   const FunctionType *FTy = cast<FunctionType>(FPTy->getElementType());
 
@@ -1219,7 +1219,7 @@
   Assert1(Op0Ty == Op1Ty,
           "Both operands to ICmp instruction are not of the same type!", &IC);
   // Check that the operands are the right type
-  Assert1(Op0Ty->isIntOrIntVectorTy() || isa<PointerType>(Op0Ty),
+  Assert1(Op0Ty->isIntOrIntVectorTy() || Op0Ty->isPointerTy(),
           "Invalid operand types for ICmp instruction", &IC);
 
   visitInstruction(IC);
@@ -1286,7 +1286,7 @@
     GetElementPtrInst::getIndexedType(GEP.getOperand(0)->getType(),
                                       Idxs.begin(), Idxs.end());
   Assert1(ElTy, "Invalid indices for GEP pointer type!", &GEP);
-  Assert2(isa<PointerType>(GEP.getType()) &&
+  Assert2(GEP.getType()->isPointerTy() &&
           cast<PointerType>(GEP.getType())->getElementType() == ElTy,
           "GEP is not of right type for indices!", &GEP, ElTy);
   visitInstruction(GEP);
@@ -1632,7 +1632,7 @@
     if (ID == Intrinsic::gcroot) {
       AllocaInst *AI =
         dyn_cast<AllocaInst>(CI.getOperand(1)->stripPointerCasts());
-      Assert1(AI && isa<PointerType>(AI->getType()->getElementType()),
+      Assert1(AI && AI->getType()->getElementType()->isPointerTy(),
               "llvm.gcroot parameter #1 must be a pointer alloca.", &CI);
       Assert1(isa<Constant>(CI.getOperand(2)),
               "llvm.gcroot parameter #2 must be a constant.", &CI);
@@ -1794,7 +1794,7 @@
     }
     Suffix += ".v" + utostr(NumElts) + EVT::getEVT(EltTy).getEVTString();
   } else if (VT == MVT::iPTR) {
-    if (!isa<PointerType>(Ty)) {
+    if (!Ty->isPointerTy()) {
       CheckFailed(IntrinsicParam(ArgNo, NumRets) + " is not a "
                   "pointer and a pointer is required.", F);
       return false;
diff --git a/tools/bugpoint/CrashDebugger.cpp b/tools/bugpoint/CrashDebugger.cpp
index b348a08..b51bdb4 100644
--- a/tools/bugpoint/CrashDebugger.cpp
+++ b/tools/bugpoint/CrashDebugger.cpp
@@ -295,7 +295,7 @@
 
         TerminatorInst *BBTerm = BB->getTerminator();
         
-        if (isa<StructType>(BBTerm->getType()))
+        if (BBTerm->getType()->isStructTy())
            BBTerm->replaceAllUsesWith(UndefValue::get(BBTerm->getType()));
         else if (BB->getTerminator()->getType() != 
                     Type::getVoidTy(BB->getContext()))
diff --git a/tools/bugpoint/ExtractFunction.cpp b/tools/bugpoint/ExtractFunction.cpp
index 70011a7..eaa2c53 100644
--- a/tools/bugpoint/ExtractFunction.cpp
+++ b/tools/bugpoint/ExtractFunction.cpp
@@ -73,7 +73,7 @@
   Instruction *TheInst = RI;              // Got the corresponding instruction!
 
   // If this instruction produces a value, replace any users with null values
-  if (isa<StructType>(TheInst->getType()))
+  if (TheInst->getType()->isStructTy())
     TheInst->replaceAllUsesWith(UndefValue::get(TheInst->getType()));
   else if (TheInst->getType() != Type::getVoidTy(I->getContext()))
     TheInst->replaceAllUsesWith(Constant::getNullValue(TheInst->getType()));