Index: lib/Linker/LinkModules.cpp
===================================================================
--- lib/Linker/LinkModules.cpp
+++ lib/Linker/LinkModules.cpp
@@ -961,7 +961,8 @@
     new GlobalVariable(*DstGV->getParent(), NewType, SrcGV->isConstant(),
                        DstGV->getLinkage(), /*init*/nullptr, /*name*/"", DstGV,
                        DstGV->getThreadLocalMode(),
-                       DstGV->getType()->getAddressSpace());
+                       DstGV->getType()->getAddressSpace(),
+                       DstGV->isExternallyInitialized());
 
   // Propagate alignment, visibility and section info.
   copyGVAttributes(NG, DstGV);
@@ -1100,7 +1101,8 @@
       *DstM, TypeMap.get(SGVar->getType()->getElementType()),
       SGVar->isConstant(), SGVar->getLinkage(), /*init*/ nullptr,
       SGVar->getName(), /*insertbefore*/ nullptr, SGVar->getThreadLocalMode(),
-      SGVar->getType()->getAddressSpace());
+      SGVar->getType()->getAddressSpace(),
+      SGVar->isExternallyInitialized());
 
   if (Alignment)
     NewDGV->setAlignment(Alignment);
Index: test/LTO/obj-c-global-var-selectors.ll
===================================================================
--- /dev/null
+++ test/LTO/obj-c-global-var-selectors.ll
@@ -0,0 +1,68 @@
+; RUN: llvm-as < %s >%t1
+; RUN: llvm-lto -exported-symbol=_main %t1 -o %t2
+; RUN: llvm-objdump -t %t2 | FileCheck %s
+
+; Validate that the OBJC_SELECTOR_REFERENCES aren't pre-evaluated and burned directly into the image
+; Selectors are potentially modified at load time by the ObjectiveC runtime, if they conflict with a
+; another selector in a different .dylib
+
+; CHECK: SYMBOL TABLE:
+; CHECK: {{.*}}bss{{.*}}ZL5MySel
+; CHECK: {{.*}}_GLOBAL__sub_I_test.mm
+
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.9.0"
+
+@_ZL5MySel = internal unnamed_addr global i8* null, align 8
+@"\01L_OBJC_METH_VAR_NAME_" = private global [7 x i8] c"length\00", section "__TEXT,__objc_methname,cstring_literals", align 1
+@"\01L_OBJC_SELECTOR_REFERENCES_" = private externally_initialized global i8* getelementptr inbounds ([7 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i64 0, i64 0), section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
+@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_test.mm, i8* null }]
+@llvm.compiler.used = appending global [2 x i8*] [i8* getelementptr inbounds ([7 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i32 0, i32 0), i8* bitcast (i8** @"\01L_OBJC_SELECTOR_REFERENCES_" to i8*)], section "llvm.metadata"
+@str = private unnamed_addr constant [5 x i8] c"BUG!\00"
+
+; Function Attrs: nounwind ssp uwtable
+define i32 @main(i32 %argc, i8** nocapture readnone %argv) #0 {
+entry:
+  %0 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8, !invariant.load !5
+  %1 = load i8** @_ZL5MySel, align 8, !tbaa !6
+  %cmp = icmp eq i8* %0, %1
+  br i1 %cmp, label %return, label %if.then
+
+if.then:                                          ; preds = %entry
+  %puts = tail call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @str, i64 0, i64 0))
+  br label %return
+
+return:                                           ; preds = %if.then, %entry
+  %retval.0 = phi i32 [ -1, %if.then ], [ 0, %entry ]
+  ret i32 %retval.0
+}
+
+; This function CANNOT be pre-evaluated, because the load i8** is of an externally_initialized structure.
+
+; Function Attrs: nounwind
+define internal void @_GLOBAL__sub_I_test.mm() #1 section "__TEXT,__StaticInit,regular,pure_instructions" {
+entry:
+  %0 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_", align 8, !invariant.load !5
+  store i8* %0, i8** @_ZL5MySel, align 8, !tbaa !6
+  ret void
+}
+
+; Function Attrs: nounwind
+declare i32 @puts(i8* nocapture readonly) #1
+
+attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nounwind }
+
+!llvm.module.flags = !{!0, !1, !2, !3}
+!llvm.ident = !{!4}
+
+!0 = metadata !{i32 1, metadata !"Objective-C Version", i32 2}
+!1 = metadata !{i32 1, metadata !"Objective-C Image Info Version", i32 0}
+!2 = metadata !{i32 1, metadata !"Objective-C Image Info Section", metadata !"__DATA, __objc_imageinfo, regular, no_dead_strip"}
+!3 = metadata !{i32 4, metadata !"Objective-C Garbage Collection", i32 0}
+!4 = metadata !{metadata !"clang version 3.6.0 (ssh://git.vip.facebook.com/data/gitrepos/llvm/clang.git 1183ce584f8d2883adc1cfe48a357cce21edd4dd) (llvm/llvm.git ee129ed18ddc77b3bd12567987af302ec0e25c3a)"}
+!5 = metadata !{}
+!6 = metadata !{metadata !7, metadata !7, i64 0}
+!7 = metadata !{metadata !"any pointer", metadata !8, i64 0}
+!8 = metadata !{metadata !"omnipotent char", metadata !9, i64 0}
+!9 = metadata !{metadata !"Simple C/C++ TBAA"}