From 39ccd24126fcb99e95f15e49278a88adece2319a Mon Sep 17 00:00:00 2001
From: Davide Italiano <davide@freebsd.org>
Date: Tue, 13 Sep 2016 18:45:13 +0000
Subject: [LTO] Don't pass SF_Undefined symbols to the IRmover.

This should fix PR 30363.

llvm-svn: 281366
---
 llvm/lib/LTO/LTO.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'llvm/lib/LTO/LTO.cpp')

diff --git a/llvm/lib/LTO/LTO.cpp b/llvm/lib/LTO/LTO.cpp
index f495774b033..0323bb83858 100644
--- a/llvm/lib/LTO/LTO.cpp
+++ b/llvm/lib/LTO/LTO.cpp
@@ -337,6 +337,8 @@ Error LTO::addRegularLTO(std::unique_ptr<InputFile> Input,
     addSymbolToGlobalRes(Obj.get(), Used, Sym, Res, 0);
 
     GlobalValue *GV = Obj->getSymbolGV(Sym.I->getRawDataRefImpl());
+    if (Sym.getFlags() & object::BasicSymbolRef::SF_Undefined)
+      continue;
     if (Res.Prevailing && GV) {
       Keep.push_back(GV);
       switch (GV->getLinkage()) {
-- 
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