[IR] Add getNoWrapKind method for OverflowingBinaryOperator (NFC)

Author: antoniofrighetto

llvm/include/llvm/IR/Operator.h

@@ -109,6 +109,18 @@ class OverflowingBinaryOperator : public Operator {
     return (SubclassOptionalData & NoSignedWrap) != 0;
   }
 
+  /// Returns the no-wrap kind of the operation.
+  unsigned getNoWrapKind() const {
+    unsigned NoWrapKind = 0;
+    if (hasNoUnsignedWrap())
+      NoWrapKind |= NoUnsignedWrap;
+
+    if (hasNoSignedWrap())
+      NoWrapKind |= NoSignedWrap;
+
+    return NoWrapKind;
+  }
+
   static bool classof(const Instruction *I) {
     return I->getOpcode() == Instruction::Add ||
            I->getOpcode() == Instruction::Sub ||

llvm/lib/Analysis/LazyValueInfo.cpp

@@ -997,12 +997,7 @@ LazyValueInfoImpl::solveBlockValueBinaryOp(BinaryOperator *BO, BasicBlock *BB) {
   assert(BO->getOperand(0)->getType()->isSized() &&
          "all operands to binary operators are sized");
   if (auto *OBO = dyn_cast<OverflowingBinaryOperator>(BO)) {
-    unsigned NoWrapKind = 0;
-    if (OBO->hasNoUnsignedWrap())
-      NoWrapKind |= OverflowingBinaryOperator::NoUnsignedWrap;
-    if (OBO->hasNoSignedWrap())
-      NoWrapKind |= OverflowingBinaryOperator::NoSignedWrap;
-
+    unsigned NoWrapKind = OBO->getNoWrapKind();
     return solveBlockValueBinaryOpImpl(
         BO, BB,
         [BO, NoWrapKind](const ConstantRange &CR1, const ConstantRange &CR2) {