From 69760d421dddbb45cfccf7f18f6d20d89680c30e Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Wed, 1 Jul 2020 12:37:47 +0100
Subject: [PATCH] Pass stripNonLineTableDebugInfo remapDebugLoc lambda DebugLoc
 arg by const reference not value.

Noticed by clang-tidy performance-unnecessary-value-param warning.
---
 lib/IR/DebugInfo.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/IR/DebugInfo.cpp b/lib/IR/DebugInfo.cpp
index 254b6fe563e..190b220dc9a 100644
--- a/lib/IR/DebugInfo.cpp
+++ b/lib/IR/DebugInfo.cpp
@@ -647,7 +647,7 @@ bool llvm::stripNonLineTableDebugInfo(Module &M) {
     }
     for (auto &BB : F) {
       for (auto &I : BB) {
-        auto remapDebugLoc = [&](DebugLoc DL) -> DebugLoc {
+        auto remapDebugLoc = [&](const DebugLoc &DL) -> DebugLoc {
           auto *Scope = DL.getScope();
           MDNode *InlinedAt = DL.getInlinedAt();
           Scope = remap(Scope);