diff --git a/include/llvm/CodeGen/RegAllocPBQP.h b/include/llvm/CodeGen/RegAllocPBQP.h
index b617c145585..dd7638e762c 100644
--- a/include/llvm/CodeGen/RegAllocPBQP.h
+++ b/include/llvm/CodeGen/RegAllocPBQP.h
@@ -17,6 +17,7 @@
 #define LLVM_CODEGEN_REGALLOCPBQP_H
 
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/OwningPtr.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/CodeGen/PBQP/Graph.h"
 #include "llvm/CodeGen/PBQP/Solution.h"
@@ -123,11 +124,10 @@ namespace llvm {
 
     /// Build a PBQP instance to represent the register allocation problem for
     /// the given MachineFunction.
-    virtual std::auto_ptr<PBQPRAProblem> build(
-                                              MachineFunction *mf,
-                                              const LiveIntervals *lis,
-                                              const MachineLoopInfo *loopInfo,
-                                              const RegSet &vregs);
+    virtual OwningPtr<PBQPRAProblem> build(MachineFunction *mf,
+                                           const LiveIntervals *lis,
+                                           const MachineLoopInfo *loopInfo,
+                                           const RegSet &vregs);
   private:
 
     void addSpillCosts(PBQP::Vector &costVec, PBQP::PBQPNum spillCost);
@@ -144,11 +144,10 @@ namespace llvm {
  
     /// Build a PBQP instance to represent the register allocation problem for
     /// the given MachineFunction.
-    virtual std::auto_ptr<PBQPRAProblem> build(
-                                              MachineFunction *mf,
-                                              const LiveIntervals *lis,
-                                              const MachineLoopInfo *loopInfo,
-                                              const RegSet &vregs);   
+    virtual OwningPtr<PBQPRAProblem> build(MachineFunction *mf,
+                                           const LiveIntervals *lis,
+                                           const MachineLoopInfo *loopInfo,
+                                           const RegSet &vregs);   
 
   private:
 
@@ -161,7 +160,7 @@ namespace llvm {
                             PBQP::PBQPNum benefit);
   };
 
-  FunctionPass* createPBQPRegisterAllocator(std::auto_ptr<PBQPBuilder> builder,
+  FunctionPass* createPBQPRegisterAllocator(OwningPtr<PBQPBuilder> builder,
                                             char *customPassID=0);
 }
 
diff --git a/lib/CodeGen/RegAllocBasic.cpp b/lib/CodeGen/RegAllocBasic.cpp
index 0b6dc68cdf0..7fcfe9e88be 100644
--- a/lib/CodeGen/RegAllocBasic.cpp
+++ b/lib/CodeGen/RegAllocBasic.cpp
@@ -63,7 +63,7 @@ class RABasic : public MachineFunctionPass, public RegAllocBase
   MachineFunction *MF;
 
   // state
-  std::auto_ptr<Spiller> SpillerInstance;
+  OwningPtr<Spiller> SpillerInstance;
   std::priority_queue<LiveInterval*, std::vector<LiveInterval*>,
                       CompSpillWeight> Queue;
 
diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp
index 6d84176af26..9eed1fc62ac 100644
--- a/lib/CodeGen/RegAllocGreedy.cpp
+++ b/lib/CodeGen/RegAllocGreedy.cpp
@@ -78,7 +78,7 @@ class RAGreedy : public MachineFunctionPass,
   LiveDebugVariables *DebugVars;
 
   // state
-  std::auto_ptr<Spiller> SpillerInstance;
+  OwningPtr<Spiller> SpillerInstance;
   std::priority_queue<std::pair<unsigned, unsigned> > Queue;
   unsigned NextCascade;
 
@@ -166,8 +166,8 @@ class RAGreedy : public MachineFunctionPass,
   };
 
   // splitting state.
-  std::auto_ptr<SplitAnalysis> SA;
-  std::auto_ptr<SplitEditor> SE;
+  OwningPtr<SplitAnalysis> SA;
+  OwningPtr<SplitEditor> SE;
 
   /// Cached per-block interference maps
   InterferenceCache IntfCache;
diff --git a/lib/CodeGen/RegAllocPBQP.cpp b/lib/CodeGen/RegAllocPBQP.cpp
index 607edac24bd..42cdc649c22 100644
--- a/lib/CodeGen/RegAllocPBQP.cpp
+++ b/lib/CodeGen/RegAllocPBQP.cpp
@@ -89,8 +89,8 @@ public:
   static char ID;
 
   /// Construct a PBQP register allocator.
-  RegAllocPBQP(std::auto_ptr<PBQPBuilder> b, char *cPassID=0)
-      : MachineFunctionPass(ID), builder(b), customPassID(cPassID) {
+  RegAllocPBQP(OwningPtr<PBQPBuilder> b, char *cPassID=0)
+      : MachineFunctionPass(ID), builder(b.take()), customPassID(cPassID) {
     initializeSlotIndexesPass(*PassRegistry::getPassRegistry());
     initializeLiveIntervalsPass(*PassRegistry::getPassRegistry());
     initializeCalculateSpillWeightsPass(*PassRegistry::getPassRegistry());
@@ -121,7 +121,7 @@ private:
   typedef std::set<unsigned> RegSet;
 
 
-  std::auto_ptr<PBQPBuilder> builder;
+  OwningPtr<PBQPBuilder> builder;
 
   char *customPassID;
 
@@ -132,7 +132,7 @@ private:
   const MachineLoopInfo *loopInfo;
   MachineRegisterInfo *mri;
 
-  std::auto_ptr<Spiller> spiller;
+  OwningPtr<Spiller> spiller;
   LiveIntervals *lis;
   LiveStacks *lss;
   VirtRegMap *vrm;
@@ -186,16 +186,16 @@ unsigned PBQPRAProblem::getPRegForOption(unsigned vreg, unsigned option) const {
   return allowedSet[option - 1];
 }
 
-std::auto_ptr<PBQPRAProblem> PBQPBuilder::build(MachineFunction *mf,
-                                                const LiveIntervals *lis,
-                                                const MachineLoopInfo *loopInfo,
-                                                const RegSet &vregs) {
+OwningPtr<PBQPRAProblem> PBQPBuilder::build(MachineFunction *mf,
+                                            const LiveIntervals *lis,
+                                            const MachineLoopInfo *loopInfo,
+                                            const RegSet &vregs) {
 
   LiveIntervals *LIS = const_cast<LiveIntervals*>(lis);
   MachineRegisterInfo *mri = &mf->getRegInfo();
   const TargetRegisterInfo *tri = mf->getTarget().getRegisterInfo();
 
-  std::auto_ptr<PBQPRAProblem> p(new PBQPRAProblem());
+  OwningPtr<PBQPRAProblem> p(new PBQPRAProblem());
   PBQP::Graph &g = p->getGraph();
   RegSet pregs;
 
@@ -311,13 +311,13 @@ void PBQPBuilder::addInterferenceCosts(
   }
 }
 
-std::auto_ptr<PBQPRAProblem> PBQPBuilderWithCoalescing::build(
+OwningPtr<PBQPRAProblem> PBQPBuilderWithCoalescing::build(
                                                 MachineFunction *mf,
                                                 const LiveIntervals *lis,
                                                 const MachineLoopInfo *loopInfo,
                                                 const RegSet &vregs) {
 
-  std::auto_ptr<PBQPRAProblem> p = PBQPBuilder::build(mf, lis, loopInfo, vregs);
+  OwningPtr<PBQPRAProblem> p = PBQPBuilder::build(mf, lis, loopInfo, vregs);
   PBQP::Graph &g = p->getGraph();
 
   const TargetMachine &tm = mf->getTarget();
@@ -584,7 +584,7 @@ bool RegAllocPBQP::runOnMachineFunction(MachineFunction &MF) {
     while (!pbqpAllocComplete) {
       DEBUG(dbgs() << "  PBQP Regalloc round " << round << ":\n");
 
-      std::auto_ptr<PBQPRAProblem> problem =
+      OwningPtr<PBQPRAProblem> problem =
         builder->build(mf, lis, loopInfo, vregsToAlloc);
 
 #ifndef NDEBUG
@@ -621,18 +621,18 @@ bool RegAllocPBQP::runOnMachineFunction(MachineFunction &MF) {
 }
 
 FunctionPass* llvm::createPBQPRegisterAllocator(
-                                           std::auto_ptr<PBQPBuilder> builder,
+                                           OwningPtr<PBQPBuilder> builder,
                                            char *customPassID) {
-  return new RegAllocPBQP(builder, customPassID);
+  return new RegAllocPBQP(OwningPtr<PBQPBuilder>(builder.take()), customPassID);
 }
 
 FunctionPass* llvm::createDefaultPBQPRegisterAllocator() {
   if (pbqpCoalescing) {
     return createPBQPRegisterAllocator(
-             std::auto_ptr<PBQPBuilder>(new PBQPBuilderWithCoalescing()));
+             OwningPtr<PBQPBuilder>(new PBQPBuilderWithCoalescing()));
   } // else
   return createPBQPRegisterAllocator(
-           std::auto_ptr<PBQPBuilder>(new PBQPBuilder()));
+           OwningPtr<PBQPBuilder>(new PBQPBuilder()));
 }
 
 #undef DEBUG_TYPE
diff --git a/tools/bugpoint/BugDriver.cpp b/tools/bugpoint/BugDriver.cpp
index e49a96b1e0c..937d86a5b8a 100644
--- a/tools/bugpoint/BugDriver.cpp
+++ b/tools/bugpoint/BugDriver.cpp
@@ -122,7 +122,7 @@ bool BugDriver::addSources(const std::vector<std::string> &Filenames) {
   outs() << "Read input file      : '" << Filenames[0] << "'\n";
 
   for (unsigned i = 1, e = Filenames.size(); i != e; ++i) {
-    std::auto_ptr<Module> M(ParseInputFile(Filenames[i], Context));
+    OwningPtr<Module> M(ParseInputFile(Filenames[i], Context));
     if (M.get() == 0) return true;
 
     outs() << "Linking in input file: '" << Filenames[i] << "'\n";
diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp
index 1dce9d7b601..8a462c608a8 100644
--- a/tools/llc/llc.cpp
+++ b/tools/llc/llc.cpp
@@ -200,7 +200,7 @@ int main(int argc, char **argv) {
 static int compileModule(char **argv, LLVMContext &Context) {
   // Load the module to be compiled...
   SMDiagnostic Err;
-  std::auto_ptr<Module> M;
+  OwningPtr<Module> M;
   Module *mod = 0;
   Triple TheTriple;
 
@@ -281,7 +281,7 @@ static int compileModule(char **argv, LLVMContext &Context) {
   Options.UseInitArray = UseInitArray;
   Options.SSPBufferSize = SSPBufferSize;
 
-  std::auto_ptr<TargetMachine>
+  OwningPtr<TargetMachine>
     target(TheTarget->createTargetMachine(TheTriple.getTriple(),
                                           MCPU, FeaturesStr, Options,
                                           RelocModel, CMModel, OLvl));
diff --git a/tools/llvm-as/llvm-as.cpp b/tools/llvm-as/llvm-as.cpp
index 273c4274b5d..d6f191961da 100644
--- a/tools/llvm-as/llvm-as.cpp
+++ b/tools/llvm-as/llvm-as.cpp
@@ -94,7 +94,7 @@ int main(int argc, char **argv) {
 
   // Parse the file now...
   SMDiagnostic Err;
-  std::auto_ptr<Module> M(ParseAssemblyFile(InputFilename, Err, Context));
+  OwningPtr<Module> M(ParseAssemblyFile(InputFilename, Err, Context));
   if (M.get() == 0) {
     Err.print(argv[0], errs());
     return 1;
diff --git a/tools/llvm-dis/llvm-dis.cpp b/tools/llvm-dis/llvm-dis.cpp
index 2baa91da509..067955e5cc6 100644
--- a/tools/llvm-dis/llvm-dis.cpp
+++ b/tools/llvm-dis/llvm-dis.cpp
@@ -123,7 +123,7 @@ int main(int argc, char **argv) {
   cl::ParseCommandLineOptions(argc, argv, "llvm .bc -> .ll disassembler\n");
 
   std::string ErrorMessage;
-  std::auto_ptr<Module> M;
+  OwningPtr<Module> M;
 
   // Use the bitcode streaming interface
   DataStreamer *streamer = getDataFileStreamer(InputFilename, &ErrorMessage);
diff --git a/tools/llvm-extract/llvm-extract.cpp b/tools/llvm-extract/llvm-extract.cpp
index fd0a3818078..2f45b4eae5b 100644
--- a/tools/llvm-extract/llvm-extract.cpp
+++ b/tools/llvm-extract/llvm-extract.cpp
@@ -100,7 +100,7 @@ int main(int argc, char **argv) {
 
   // Use lazy loading, since we only care about selected global values.
   SMDiagnostic Err;
-  std::auto_ptr<Module> M;
+  OwningPtr<Module> M;
   M.reset(getLazyIRFileModule(InputFilename, Err, Context));
 
   if (M.get() == 0) {
diff --git a/tools/llvm-link/llvm-link.cpp b/tools/llvm-link/llvm-link.cpp
index 83665cc1758..b195ca88de7 100644
--- a/tools/llvm-link/llvm-link.cpp
+++ b/tools/llvm-link/llvm-link.cpp
@@ -53,13 +53,13 @@ DumpAsm("d", cl::desc("Print assembly as linked"), cl::Hidden);
 // LoadFile - Read the specified bitcode file in and return it.  This routine
 // searches the link path for the specified file to try to find it...
 //
-static inline std::auto_ptr<Module> LoadFile(const char *argv0,
-                                             const std::string &FN, 
-                                             LLVMContext& Context) {
+static inline OwningPtr<Module> LoadFile(const char *argv0,
+                                         const std::string &FN, 
+                                         LLVMContext& Context) {
   sys::Path Filename;
   if (!Filename.set(FN)) {
     errs() << "Invalid file name: '" << FN << "'\n";
-    return std::auto_ptr<Module>();
+    return OwningPtr<Module>();
   }
 
   SMDiagnostic Err;
@@ -68,10 +68,10 @@ static inline std::auto_ptr<Module> LoadFile(const char *argv0,
   
   const std::string &FNStr = Filename.str();
   Result = ParseIRFile(FNStr, Err, Context);
-  if (Result) return std::auto_ptr<Module>(Result);   // Load successful!
+  if (Result) return OwningPtr<Module>(Result);   // Load successful!
 
   Err.print(argv0, errs());
-  return std::auto_ptr<Module>();
+  return OwningPtr<Module>();
 }
 
 int main(int argc, char **argv) {
@@ -86,8 +86,8 @@ int main(int argc, char **argv) {
   unsigned BaseArg = 0;
   std::string ErrorMessage;
 
-  std::auto_ptr<Module> Composite(LoadFile(argv[0],
-                                           InputFilenames[BaseArg], Context));
+  OwningPtr<Module> Composite(LoadFile(argv[0],
+                                       InputFilenames[BaseArg], Context));
   if (Composite.get() == 0) {
     errs() << argv[0] << ": error loading file '"
            << InputFilenames[BaseArg] << "'\n";
@@ -95,8 +95,7 @@ int main(int argc, char **argv) {
   }
 
   for (unsigned i = BaseArg+1; i < InputFilenames.size(); ++i) {
-    std::auto_ptr<Module> M(LoadFile(argv[0],
-                                     InputFilenames[i], Context));
+    OwningPtr<Module> M(LoadFile(argv[0], InputFilenames[i], Context));
     if (M.get() == 0) {
       errs() << argv[0] << ": error loading file '" <<InputFilenames[i]<< "'\n";
       return 1;
diff --git a/tools/llvm-ranlib/llvm-ranlib.cpp b/tools/llvm-ranlib/llvm-ranlib.cpp
index fe9d3e2954a..e3e3bad8d63 100644
--- a/tools/llvm-ranlib/llvm-ranlib.cpp
+++ b/tools/llvm-ranlib/llvm-ranlib.cpp
@@ -78,7 +78,7 @@ int main(int argc, char **argv) {
   }
 
   std::string err_msg;
-  std::auto_ptr<Archive>
+  OwningPtr<Archive>
     AutoArchive(Archive::OpenAndLoad(ArchivePath, Context, &err_msg));
   Archive* TheArchive = AutoArchive.get();
   if (!TheArchive) {
diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index ba82bded2bc..e385d7f5771 100644
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -589,7 +589,7 @@ int main(int argc, char **argv) {
   SMDiagnostic Err;
 
   // Load the input module...
-  std::auto_ptr<Module> M;
+  OwningPtr<Module> M;
   M.reset(ParseIRFile(InputFilename, Err, Context));
 
   if (M.get() == 0) {
@@ -656,7 +656,7 @@ int main(int argc, char **argv) {
   TargetMachine *Machine = 0;
   if (ModuleTriple.getArch())
     Machine = GetTargetMachine(Triple(ModuleTriple));
-  std::auto_ptr<TargetMachine> TM(Machine);
+  OwningPtr<TargetMachine> TM(Machine);
 
   // Add internal analysis passes from the target machine.
   if (TM.get())