Fix comment

Author: leewei05

llvm/lib/Transforms/Scalar/ConstraintElimination.cpp

@@ -653,7 +653,7 @@ ConstraintInfo::getConstraint(CmpInst::Predicate Pred, Value *Op0, Value *Op1,
   bool IsEq = false;
   bool IsNe = false;
 
-  // Try to convert Pred to one of ULE/SLT/SLE/SLT.
+  // Try to convert Pred to one of ULE/ULT/SLE/SLT.
   switch (Pred) {
   case CmpInst::ICMP_UGT:
   case CmpInst::ICMP_UGE: