diff --git a/llvm/include/llvm/CodeGen/Register.h b/llvm/include/llvm/CodeGen/Register.h
--- a/llvm/include/llvm/CodeGen/Register.h
+++ b/llvm/include/llvm/CodeGen/Register.h
@@ -113,6 +113,19 @@
   bool isValid() const {
     return Reg != 0;
   }
+
+  /// Comparisons between register objects
+  bool operator==(const Register &Other) const { return Reg == Other.Reg; }
+  bool operator!=(const Register &Other) const { return Reg != Other.Reg; }
+
+  /// Comparisons against register constants. E.g.
+  /// * R == AArch64::WZR
+  /// * R == 0
+  /// * R == VirtRegMap::NO_PHYS_REG
+  bool operator==(unsigned Other) const { return Reg == Other; }
+  bool operator!=(unsigned Other) const { return Reg != Other; }
+  bool operator==(int Other) const { return Reg == unsigned(Other); }
+  bool operator!=(int Other) const { return Reg != unsigned(Other); }
 };
 
 // Provide DenseMapInfo for Register
diff --git a/llvm/include/llvm/MC/MCRegister.h b/llvm/include/llvm/MC/MCRegister.h
--- a/llvm/include/llvm/MC/MCRegister.h
+++ b/llvm/include/llvm/MC/MCRegister.h
@@ -63,6 +63,19 @@
   bool isValid() const {
     return Reg != 0;
   }
+
+  /// Comparisons between register objects
+  bool operator==(const MCRegister &Other) const { return Reg == Other.Reg; }
+  bool operator!=(const MCRegister &Other) const { return Reg != Other.Reg; }
+
+  /// Comparisons against register constants. E.g.
+  /// * R == AArch64::WZR
+  /// * R == 0
+  /// * R == VirtRegMap::NO_PHYS_REG
+  bool operator==(unsigned Other) const { return Reg == Other; }
+  bool operator!=(unsigned Other) const { return Reg != Other; }
+  bool operator==(int Other) const { return Reg == unsigned(Other); }
+  bool operator!=(int Other) const { return Reg != unsigned(Other); }
 };
 
 // Provide DenseMapInfo for MCRegister