From 2d6b1e9b5f3b6c49c0a7732583c984d8dcbc8a9d Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Thu, 17 Dec 2020 12:06:28 +0000
Subject: [PATCH] [DebugInfo] Fix MSVC build by adding back necessary
 reverse_iterator != operator

Put back the std::reverse_iterator<DWARFDie::iterator> != operator that was removed in D78938 to fix VS2019 builds
---
 llvm/include/llvm/DebugInfo/DWARF/DWARFDie.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/llvm/include/llvm/DebugInfo/DWARF/DWARFDie.h b/llvm/include/llvm/DebugInfo/DWARF/DWARFDie.h
index 5352dbe4b442..0f76d7f1b31c 100644
--- a/llvm/include/llvm/DebugInfo/DWARF/DWARFDie.h
+++ b/llvm/include/llvm/DebugInfo/DWARF/DWARFDie.h
@@ -463,6 +463,11 @@ inline bool operator==(const std::reverse_iterator<DWARFDie::iterator> &LHS,
   return LHS.equals(RHS);
 }
 
+inline bool operator!=(const std::reverse_iterator<DWARFDie::iterator> &LHS,
+                       const std::reverse_iterator<DWARFDie::iterator> &RHS) {
+  return !(LHS == RHS);
+}
+
 inline std::reverse_iterator<DWARFDie::iterator> DWARFDie::rbegin() const {
   return llvm::make_reverse_iterator(end());
 }