diff --git a/include/llvm/Constants.h b/include/llvm/Constants.h
index caa13f6ac68..7440f99c50d 100644
--- a/include/llvm/Constants.h
+++ b/include/llvm/Constants.h
@@ -692,6 +692,7 @@ public:
   static Constant *getIntToPtr(Constant *C, const Type *Ty);
   static Constant *getBitCast (Constant *C, const Type *Ty);
 
+  static Constant *getNSWNeg(Constant *C);
   static Constant *getNSWAdd(Constant *C1, Constant *C2);
   static Constant *getNSWSub(Constant *C1, Constant *C2);
   static Constant *getExactSDiv(Constant *C1, Constant *C2);
diff --git a/include/llvm/InstrTypes.h b/include/llvm/InstrTypes.h
index bc899699d90..b25290226bb 100644
--- a/include/llvm/InstrTypes.h
+++ b/include/llvm/InstrTypes.h
@@ -308,6 +308,10 @@ public:
                                    Instruction *InsertBefore = 0);
   static BinaryOperator *CreateNeg(Value *Op, const Twine &Name,
                                    BasicBlock *InsertAtEnd);
+  static BinaryOperator *CreateNSWNeg(Value *Op, const Twine &Name = "",
+                                      Instruction *InsertBefore = 0);
+  static BinaryOperator *CreateNSWNeg(Value *Op, const Twine &Name,
+                                      BasicBlock *InsertAtEnd);
   static BinaryOperator *CreateFNeg(Value *Op, const Twine &Name = "",
                                     Instruction *InsertBefore = 0);
   static BinaryOperator *CreateFNeg(Value *Op, const Twine &Name,
diff --git a/include/llvm/Support/ConstantFolder.h b/include/llvm/Support/ConstantFolder.h
index b73cea04aba..eea33dfff61 100644
--- a/include/llvm/Support/ConstantFolder.h
+++ b/include/llvm/Support/ConstantFolder.h
@@ -109,6 +109,9 @@ public:
   Constant *CreateNeg(Constant *C) const {
     return ConstantExpr::getNeg(C);
   }
+  Constant *CreateNSWNeg(Constant *C) const {
+    return ConstantExpr::getNSWNeg(C);
+  }
   Constant *CreateFNeg(Constant *C) const {
     return ConstantExpr::getFNeg(C);
   }
diff --git a/include/llvm/Support/IRBuilder.h b/include/llvm/Support/IRBuilder.h
index 1310d70545f..22b05d6a10d 100644
--- a/include/llvm/Support/IRBuilder.h
+++ b/include/llvm/Support/IRBuilder.h
@@ -478,6 +478,11 @@ public:
       return Folder.CreateNeg(VC);
     return Insert(BinaryOperator::CreateNeg(V), Name);
   }
+  Value *CreateNSWNeg(Value *V, const Twine &Name = "") {
+    if (Constant *VC = dyn_cast<Constant>(V))
+      return Folder.CreateNSWNeg(VC);
+    return Insert(BinaryOperator::CreateNSWNeg(V), Name);
+  }
   Value *CreateFNeg(Value *V, const Twine &Name = "") {
     if (Constant *VC = dyn_cast<Constant>(V))
       return Folder.CreateFNeg(VC);
diff --git a/include/llvm/Support/NoFolder.h b/include/llvm/Support/NoFolder.h
index 7f2f1497f39..f6f4c5b3c85 100644
--- a/include/llvm/Support/NoFolder.h
+++ b/include/llvm/Support/NoFolder.h
@@ -115,6 +115,9 @@ public:
   Value *CreateNeg(Constant *C) const {
     return BinaryOperator::CreateNeg(C);
   }
+  Value *CreateNSWNeg(Constant *C) const {
+    return BinaryOperator::CreateNSWNeg(C);
+  }
   Value *CreateNot(Constant *C) const {
     return BinaryOperator::CreateNot(C);
   }
diff --git a/include/llvm/Support/TargetFolder.h b/include/llvm/Support/TargetFolder.h
index afed853e867..9aa762570e8 100644
--- a/include/llvm/Support/TargetFolder.h
+++ b/include/llvm/Support/TargetFolder.h
@@ -122,6 +122,9 @@ public:
   Constant *CreateNeg(Constant *C) const {
     return Fold(ConstantExpr::getNeg(C));
   }
+  Constant *CreateNSWNeg(Constant *C) const {
+    return Fold(ConstantExpr::getNSWNeg(C));
+  }
   Constant *CreateFNeg(Constant *C) const {
     return Fold(ConstantExpr::getFNeg(C));
   }
diff --git a/lib/VMCore/Constants.cpp b/lib/VMCore/Constants.cpp
index a62f75b1c80..2507402f899 100644
--- a/lib/VMCore/Constants.cpp
+++ b/lib/VMCore/Constants.cpp
@@ -627,6 +627,12 @@ Constant* ConstantVector::get(Constant* const* Vals, unsigned NumVals) {
   return get(std::vector<Constant*>(Vals, Vals+NumVals));
 }
 
+Constant* ConstantExpr::getNSWNeg(Constant* C) {
+  assert(C->getType()->isIntOrIntVector() &&
+         "Cannot NEG a nonintegral value!");
+  return getNSWSub(ConstantFP::getZeroValueForNegation(C->getType()), C);
+}
+
 Constant* ConstantExpr::getNSWAdd(Constant* C1, Constant* C2) {
   return getTy(C1->getType(), Instruction::Add, C1, C2,
                OverflowingBinaryOperator::NoSignedWrap);
diff --git a/lib/VMCore/Instructions.cpp b/lib/VMCore/Instructions.cpp
index b03ee93dbe7..97fec399e48 100644
--- a/lib/VMCore/Instructions.cpp
+++ b/lib/VMCore/Instructions.cpp
@@ -1772,6 +1772,18 @@ BinaryOperator *BinaryOperator::CreateNeg(Value *Op, const Twine &Name,
                             Op->getType(), Name, InsertAtEnd);
 }
 
+BinaryOperator *BinaryOperator::CreateNSWNeg(Value *Op, const Twine &Name,
+                                             Instruction *InsertBefore) {
+  Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
+  return BinaryOperator::CreateNSWSub(zero, Op, Name, InsertBefore);
+}
+
+BinaryOperator *BinaryOperator::CreateNSWNeg(Value *Op, const Twine &Name,
+                                             BasicBlock *InsertAtEnd) {
+  Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());
+  return BinaryOperator::CreateNSWSub(zero, Op, Name, InsertAtEnd);
+}
+
 BinaryOperator *BinaryOperator::CreateFNeg(Value *Op, const Twine &Name,
                                            Instruction *InsertBefore) {
   Value *zero = ConstantFP::getZeroValueForNegation(Op->getType());