diff --git a/include/llvm/InstrTypes.h b/include/llvm/InstrTypes.h
index 9e9052c..6b84857 100644
--- a/include/llvm/InstrTypes.h
+++ b/include/llvm/InstrTypes.h
@@ -718,6 +718,18 @@
   /// @brief Determine if this is an equals/not equals predicate.
   bool isEquality();
 
+  /// @returns true if the comparison is signed, false otherwise.
+  /// @brief Determine if this instruction is using a signed comparison.
+  bool isSigned() const {
+    return isSigned(getPredicate());
+  }
+
+  /// @returns true if the comparison is unsigned, false otherwise.
+  /// @brief Determine if this instruction is using an unsigned comparison.
+  bool isUnsigned() const {
+    return isUnsigned(getPredicate());
+  }
+
   /// This is just a convenience.
   /// @brief Determine if this is true when both operands are the same.
   bool isTrueWhenEqual() const {
diff --git a/include/llvm/Instructions.h b/include/llvm/Instructions.h
index 43f0929..1e2c93f 100644
--- a/include/llvm/Instructions.h
+++ b/include/llvm/Instructions.h
@@ -693,14 +693,6 @@
     return !isEquality(P);
   }
 
-  /// @returns true if the predicate of this ICmpInst is signed, false otherwise
-  /// @brief Determine if this instruction's predicate is signed.
-  bool isSignedPredicate() const { return isSignedPredicate(getPredicate()); }
-
-  /// @returns true if the predicate provided is signed, false otherwise
-  /// @brief Determine if the predicate is signed.
-  static bool isSignedPredicate(Predicate pred);
-
   /// Initialize a set of values that all satisfy the predicate with C.
   /// @brief Make a ConstantRange for a relation with a constant value.
   static ConstantRange makeConstantRange(Predicate pred, const APInt &C);
diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index cbf769b..27ed5c3 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -1627,7 +1627,7 @@
   }
   
   // Should this be a signed comparison?  If so, convert to signed.
-  bool castIsSigned = Cmp.isSignedPredicate();
+  bool castIsSigned = Cmp.isSigned();
 
   // If the operand was a pointer, convert to a large integer type.
   const Type* OpTy = Operand->getType();
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index be4f775..81423b7 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -3511,9 +3511,9 @@
 /// PredicatesFoldable - Return true if both predicates match sign or if at
 /// least one of them is an equality comparison (which is signless).
 static bool PredicatesFoldable(ICmpInst::Predicate p1, ICmpInst::Predicate p2) {
-  return (ICmpInst::isSignedPredicate(p1) == ICmpInst::isSignedPredicate(p2)) ||
-         (ICmpInst::isSignedPredicate(p1) && ICmpInst::isEquality(p2)) ||
-         (ICmpInst::isSignedPredicate(p2) && ICmpInst::isEquality(p1));
+  return (CmpInst::isSigned(p1) == CmpInst::isSigned(p2)) ||
+         (CmpInst::isSigned(p1) && ICmpInst::isEquality(p2)) ||
+         (CmpInst::isSigned(p2) && ICmpInst::isEquality(p1));
 }
 
 namespace { 
@@ -3550,9 +3550,7 @@
     default: llvm_unreachable("Illegal logical opcode!"); return 0;
     }
 
-    bool isSigned = ICmpInst::isSignedPredicate(RHSICI->getPredicate()) || 
-                    ICmpInst::isSignedPredicate(ICI->getPredicate());
-      
+    bool isSigned = RHSICI->isSigned() || ICI->isSigned();
     Value *RV = getICmpValue(isSigned, Code, LHS, RHS, IC.getContext());
     if (Instruction *I = dyn_cast<Instruction>(RV))
       return I;
@@ -3849,9 +3847,9 @@
     
   // Ensure that the larger constant is on the RHS.
   bool ShouldSwap;
-  if (ICmpInst::isSignedPredicate(LHSCC) ||
+  if (CmpInst::isSigned(LHSCC) ||
       (ICmpInst::isEquality(LHSCC) && 
-       ICmpInst::isSignedPredicate(RHSCC)))
+       CmpInst::isSigned(RHSCC)))
     ShouldSwap = LHSCst->getValue().sgt(RHSCst->getValue());
   else
     ShouldSwap = LHSCst->getValue().ugt(RHSCst->getValue());
@@ -4537,9 +4535,9 @@
   
   // Ensure that the larger constant is on the RHS.
   bool ShouldSwap;
-  if (ICmpInst::isSignedPredicate(LHSCC) ||
+  if (CmpInst::isSigned(LHSCC) ||
       (ICmpInst::isEquality(LHSCC) && 
-       ICmpInst::isSignedPredicate(RHSCC)))
+       CmpInst::isSigned(RHSCC)))
     ShouldSwap = LHSCst->getValue().sgt(RHSCst->getValue());
   else
     ShouldSwap = LHSCst->getValue().ugt(RHSCst->getValue());
@@ -6088,7 +6086,7 @@
     // EQ and NE we use unsigned values.
     APInt Op0Min(BitWidth, 0), Op0Max(BitWidth, 0);
     APInt Op1Min(BitWidth, 0), Op1Max(BitWidth, 0);
-    if (ICmpInst::isSignedPredicate(I.getPredicate())) {
+    if (I.isSigned()) {
       ComputeSignedMinMaxValuesFromKnownBits(Op0KnownZero, Op0KnownOne,
                                              Op0Min, Op0Max);
       ComputeSignedMinMaxValuesFromKnownBits(Op1KnownZero, Op1KnownOne,
@@ -6218,7 +6216,7 @@
 
     // Turn a signed comparison into an unsigned one if both operands
     // are known to have the same sign.
-    if (I.isSignedPredicate() &&
+    if (I.isSigned() &&
         ((Op0KnownZero.isNegative() && Op1KnownZero.isNegative()) ||
          (Op0KnownOne.isNegative() && Op1KnownOne.isNegative())))
       return new ICmpInst(I.getUnsignedPredicate(), Op0, Op1);
@@ -6398,7 +6396,7 @@
           // icmp u/s (a ^ signbit), (b ^ signbit) --> icmp s/u a, b
           if (ConstantInt *CI = dyn_cast<ConstantInt>(Op0I->getOperand(1))) {
             if (CI->getValue().isSignBit()) {
-              ICmpInst::Predicate Pred = I.isSignedPredicate()
+              ICmpInst::Predicate Pred = I.isSigned()
                                              ? I.getUnsignedPredicate()
                                              : I.getSignedPredicate();
               return new ICmpInst(Pred, Op0I->getOperand(0),
@@ -6406,7 +6404,7 @@
             }
             
             if (CI->getValue().isMaxSignedValue()) {
-              ICmpInst::Predicate Pred = I.isSignedPredicate()
+              ICmpInst::Predicate Pred = I.isSigned()
                                              ? I.getUnsignedPredicate()
                                              : I.getSignedPredicate();
               Pred = I.getSwappedPredicate(Pred);
@@ -6543,7 +6541,7 @@
   // work. :(  The if statement below tests that condition and bails 
   // if it finds it. 
   bool DivIsSigned = DivI->getOpcode() == Instruction::SDiv;
-  if (!ICI.isEquality() && DivIsSigned != ICI.isSignedPredicate())
+  if (!ICI.isEquality() && DivIsSigned != ICI.isSigned())
     return 0;
   if (DivRHS->isZero())
     return 0; // The ProdOV computation fails on divide by zero.
@@ -6742,7 +6740,7 @@
         // (icmp u/s (xor A SignBit), C) -> (icmp s/u A, (xor C SignBit))
         if (!ICI.isEquality() && XorCST->getValue().isSignBit()) {
           const APInt &SignBit = XorCST->getValue();
-          ICmpInst::Predicate Pred = ICI.isSignedPredicate()
+          ICmpInst::Predicate Pred = ICI.isSigned()
                                          ? ICI.getUnsignedPredicate()
                                          : ICI.getSignedPredicate();
           return new ICmpInst(Pred, LHSI->getOperand(0),
@@ -6752,7 +6750,7 @@
         // (icmp u/s (xor A ~SignBit), C) -> (icmp s/u (xor C ~SignBit), A)
         if (!ICI.isEquality() && XorCST->getValue().isMaxSignedValue()) {
           const APInt &NotSignBit = XorCST->getValue();
-          ICmpInst::Predicate Pred = ICI.isSignedPredicate()
+          ICmpInst::Predicate Pred = ICI.isSigned()
                                          ? ICI.getUnsignedPredicate()
                                          : ICI.getSignedPredicate();
           Pred = ICI.getSwappedPredicate(Pred);
@@ -7010,7 +7008,7 @@
       ConstantRange CR = ICI.makeConstantRange(ICI.getPredicate(), RHSV)
                             .subtract(LHSV);
 
-      if (ICI.isSignedPredicate()) {
+      if (ICI.isSigned()) {
         if (CR.getLower().isSignBit()) {
           return new ICmpInst(ICmpInst::ICMP_SLT, LHSI->getOperand(0),
                               ConstantInt::get(*Context, CR.getUpper()));
@@ -7185,7 +7183,7 @@
     return 0;
 
   bool isSignedExt = LHSCI->getOpcode() == Instruction::SExt;
-  bool isSignedCmp = ICI.isSignedPredicate();
+  bool isSignedCmp = ICI.isSigned();
 
   if (CastInst *CI = dyn_cast<CastInst>(ICI.getOperand(1))) {
     // Not an extension from the same type?
diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp
index 5f9d370..920d85c 100644
--- a/lib/Transforms/Scalar/LoopIndexSplit.cpp
+++ b/lib/Transforms/Scalar/LoopIndexSplit.cpp
@@ -426,7 +426,7 @@
   //      c1 = icmp uge i32 SplitValue, StartValue
   //      c2 = icmp ult i32 SplitValue, ExitValue
   //      and i32 c1, c2 
-  Instruction *C1 = new ICmpInst(BR, ExitCondition->isSignedPredicate() ? 
+  Instruction *C1 = new ICmpInst(BR, ExitCondition->isSigned() ? 
                                  ICmpInst::ICMP_SGE : ICmpInst::ICMP_UGE,
                                  SplitValue, StartValue, "lisplit");
 
@@ -478,7 +478,7 @@
 /// with a loop invariant value. Update loop's lower and upper bound based on 
 /// the loop invariant value.
 bool LoopIndexSplit::restrictLoopBound(ICmpInst &Op) {
-  bool Sign = Op.isSignedPredicate();
+  bool Sign = Op.isSigned();
   Instruction *PHTerm = L->getLoopPreheader()->getTerminator();
 
   if (IVisGT(*ExitCondition) || IVisGE(*ExitCondition)) {
@@ -933,7 +933,7 @@
     return false;
 
   // If the predicate sign does not match then skip.
-  if (ExitCondition->isSignedPredicate() != SplitCondition->isSignedPredicate())
+  if (ExitCondition->isSigned() != SplitCondition->isSigned())
     return false;
 
   unsigned EVOpNum = (ExitCondition->getOperand(1) == IVExitValue);
@@ -963,7 +963,7 @@
   //[*] Calculate new loop bounds.
   Value *AEV = SplitValue;
   Value *BSV = SplitValue;
-  bool Sign = SplitCondition->isSignedPredicate();
+  bool Sign = SplitCondition->isSigned();
   Instruction *PHTerm = L->getLoopPreheader()->getTerminator();
 
   if (IVisLT(*ExitCondition)) {
diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index d8f6cc1..4c305aa 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -1914,7 +1914,7 @@
         continue;
 
       // Watch out for overflow.
-      if (ICmpInst::isSignedPredicate(Predicate) &&
+      if (ICmpInst::isSigned(Predicate) &&
           (CmpVal & SignBit) != (NewCmpVal & SignBit))
         continue;
 
@@ -1956,7 +1956,7 @@
         // Check if it is possible to rewrite it using
         // an iv / stride of a smaller integer type.
         unsigned Bits = NewTyBits;
-        if (ICmpInst::isSignedPredicate(Predicate))
+        if (ICmpInst::isSigned(Predicate))
           --Bits;
         uint64_t Mask = (1ULL << Bits) - 1;
         if (((uint64_t)NewCmpVal & Mask) != (uint64_t)NewCmpVal)
diff --git a/lib/VMCore/Instructions.cpp b/lib/VMCore/Instructions.cpp
index b73ce50..c926547 100644
--- a/lib/VMCore/Instructions.cpp
+++ b/lib/VMCore/Instructions.cpp
@@ -2859,17 +2859,6 @@
   }
 }
 
-bool ICmpInst::isSignedPredicate(Predicate pred) {
-  switch (pred) {
-    default: assert(! "Unknown icmp predicate!");
-    case ICMP_SGT: case ICMP_SLT: case ICMP_SGE: case ICMP_SLE: 
-      return true;
-    case ICMP_EQ:  case ICMP_NE: case ICMP_UGT: case ICMP_ULT: 
-    case ICMP_UGE: case ICMP_ULE:
-      return false;
-  }
-}
-
 /// Initialize a set of values that all satisfy the condition with C.
 ///
 ConstantRange