Add a convenience method to tell if two things are equal.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140946 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMConstantPoolValue.h b/lib/Target/ARM/ARMConstantPoolValue.h
index f1176f6..0d0def3 100644
--- a/lib/Target/ARM/ARMConstantPoolValue.h
+++ b/lib/Target/ARM/ARMConstantPoolValue.h
@@ -93,6 +93,12 @@
   /// constantpool entry as another ARM constpool value.
   virtual bool hasSameValue(ARMConstantPoolValue *ACPV);
 
+  bool equals(const ARMConstantPoolValue *A) const {
+    return this->LabelId == A->LabelId &&
+      this->PCAdjust == A->PCAdjust &&
+      this->Modifier == A->Modifier;
+  }
+
   virtual void print(raw_ostream &O) const;
   void print(raw_ostream *O) const { if (O) print(*O); }
   void dump() const;