From 701af684f65ddb91b7eef54c0a0d2e93cc2ea4cf Mon Sep 17 00:00:00 2001
From: Daniel Sanders <daniel_l_sanders@apple.com>
Date: Fri, 17 Apr 2020 11:42:53 -0700
Subject: [PATCH] [globalisel][legalizer] Expect to lose DebugLocs in dead code

There's not really anything else that can be done with them.
Fortunately, this dead code cleanup doesn't seem to trigger
very often.
---
 llvm/lib/CodeGen/GlobalISel/Legalizer.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/CodeGen/GlobalISel/Legalizer.cpp b/llvm/lib/CodeGen/GlobalISel/Legalizer.cpp
index e00d4fb..0a2d71c 100644
--- a/llvm/lib/CodeGen/GlobalISel/Legalizer.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/Legalizer.cpp
@@ -225,7 +225,7 @@ Legalizer::legalizeMachineFunction(MachineFunction &MF, const LegalizerInfo &LI,
       if (isTriviallyDead(MI, MRI)) {
         LLVM_DEBUG(dbgs() << MI << "Is dead; erasing.\n");
         MI.eraseFromParentAndMarkDBGValuesForRemoval();
-        LocObserver.checkpoint();
+        LocObserver.checkpoint(false);
         continue;
       }
 
@@ -275,7 +275,7 @@ Legalizer::legalizeMachineFunction(MachineFunction &MF, const LegalizerInfo &LI,
         LLVM_DEBUG(dbgs() << MI << "Is dead\n");
         RemoveDeadInstFromLists(&MI);
         MI.eraseFromParentAndMarkDBGValuesForRemoval();
-        LocObserver.checkpoint();
+        LocObserver.checkpoint(false);
         continue;
       }
       SmallVector<MachineInstr *, 4> DeadInstructions;
-- 
2.7.4