From ead2aa7098cfd693ed1842a88346ba67cfccd7df Mon Sep 17 00:00:00 2001
From: Adrian Kuegel <akuegel@google.com>
Date: Thu, 15 Oct 2020 12:48:35 +0200
Subject: [PATCH] Fix unused variable warning when compiling with asserts
 disabled.

Differential Revision: https://reviews.llvm.org/D89454
---
 llvm/lib/CodeGen/MachineFunction.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/llvm/lib/CodeGen/MachineFunction.cpp b/llvm/lib/CodeGen/MachineFunction.cpp
index 60af65834947..2568448f3c92 100644
--- a/llvm/lib/CodeGen/MachineFunction.cpp
+++ b/llvm/lib/CodeGen/MachineFunction.cpp
@@ -967,11 +967,10 @@ void MachineFunction::substituteDebugValuesForInst(const MachineInstr &Old,
   // MIR output.
   for (unsigned int I = 0; I < Old.getNumOperands(); ++I) {
     const auto &OldMO = Old.getOperand(I);
-    auto &NewMO = Old.getOperand(I);
 
     if (!OldMO.isReg() || !OldMO.isDef())
       continue;
-    assert(NewMO.isDef());
+    assert(Old.getOperand(I).isDef());
 
     unsigned NewInstrNum = New.getDebugInstrNum();
     makeDebugValueSubstitution(std::make_pair(OldInstrNum, I),