diff --git a/llvm/lib/CodeGen/MIRParser/MIParser.cpp b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
index f1d3ce9a56340..7aaa0f409d5ef 100644
--- a/llvm/lib/CodeGen/MIRParser/MIParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIParser.cpp
@@ -1786,6 +1786,7 @@ bool MIParser::parseRegisterOperand(MachineOperand &Dest,
 
         MRI.setRegClassOrRegBank(Reg, static_cast<RegisterBank *>(nullptr));
         MRI.setType(Reg, Ty);
+        MRI.noteNewVirtualRegister(Reg);
       }
     }
   } else if (consumeIfPresent(MIToken::lparen)) {
diff --git a/llvm/lib/CodeGen/MIRParser/MIRParser.cpp b/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
index 0c8a3eb6c2d83..10d3cdcf0c1ce 100644
--- a/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
@@ -705,6 +705,7 @@ bool MIRParserImpl::parseRegisterInfo(PerFunctionMIParsingState &PFS,
                          FlagStringValue.Value + "'");
       Info.Flags.push_back(FlagValue);
     }
+    RegInfo.noteNewVirtualRegister(Info.VReg);
   }
 
   // Parse the liveins.