From 6b3f41ed88e8e440e11a4fbf20b6600529f80049 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Tue, 16 May 2017 19:46:52 +0000
Subject: Vendor import of llvm trunk r303197:
 https://llvm.org/svn/llvm-project/llvm/trunk@303197

---
 lib/CodeGen/TargetLoweringObjectFileImpl.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'lib/CodeGen/TargetLoweringObjectFileImpl.cpp')

diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 34892680aceb..1d232c71d824 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -232,7 +232,11 @@ static const MCSymbolELF *getAssociatedSymbol(const GlobalObject *GO,
   if (!MD)
     return nullptr;
 
-  auto *VM = dyn_cast<ValueAsMetadata>(MD->getOperand(0));
+  const MDOperand &Op = MD->getOperand(0);
+  if (!Op.get())
+    return nullptr;
+
+  auto *VM = dyn_cast<ValueAsMetadata>(Op);
   if (!VM)
     report_fatal_error("MD_associated operand is not ValueAsMetadata");
 
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