[llvm] 701af68 - [globalisel][legalizer] Expect to lose DebugLocs in dead code

[Daniel Sanders via llvm-commits]

Author: Daniel Sanders
Date: 2020-04-17T13:45:44-07:00
New Revision: 701af684f65ddb91b7eef54c0a0d2e93cc2ea4cf

URL: https://github.com/llvm/llvm-project/commit/701af684f65ddb91b7eef54c0a0d2e93cc2ea4cf
DIFF: https://github.com/llvm/llvm-project/commit/701af684f65ddb91b7eef54c0a0d2e93cc2ea4cf.diff

LOG: [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.

Added: 
    

Modified: 
    llvm/lib/CodeGen/GlobalISel/Legalizer.cpp

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/GlobalISel/Legalizer.cpp b/llvm/lib/CodeGen/GlobalISel/Legalizer.cpp
index e00d4fb7428a..0a2d71c275d5 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;