From e087912321e0f130b03040a1406580eb7c57c3d0 Mon Sep 17 00:00:00 2001
From: Fangrui Song <i@maskray.me>
Date: Fri, 12 Aug 2022 12:51:50 -0700
Subject: [PATCH] [BOLT] Use Optional::emplace to avoid move assignment. NFC

(cherry picked from commit 53113515cdaa19a86e4b807808b7b99dc1c91685)
---
 bolt/lib/Core/DebugData.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bolt/lib/Core/DebugData.cpp b/bolt/lib/Core/DebugData.cpp
index c96330796014..f0c59fb69523 100644
--- a/bolt/lib/Core/DebugData.cpp
+++ b/bolt/lib/Core/DebugData.cpp
@@ -1593,7 +1593,7 @@ void DwarfLineTable::emit(BinaryContext &BC, MCStreamer &Streamer) {
   // Some versions of GCC output DWARF5 .debug_info, but DWARF4 or lower
   // .debug_line
   if (LineStrSection) {
-    LineStr = MCDwarfLineStr(*BC.Ctx);
+    LineStr.emplace(*BC.Ctx);
     parseAndPopulateDebugLineStr(*LineStrSection, *LineStr, BC, Streamer);
   }