Index: llvm/lib/Linker/IRMover.cpp
===================================================================
--- llvm/lib/Linker/IRMover.cpp
+++ llvm/lib/Linker/IRMover.cpp
@@ -628,7 +628,7 @@
                          SGVar->isConstant(), GlobalValue::ExternalLinkage,
                          /*init*/ nullptr, SGVar->getName(),
                          /*insertbefore*/ nullptr, SGVar->getThreadLocalMode(),
-                         SGVar->getType()->getAddressSpace());
+                         SGVar->getAddressSpace());
   NewDGV->setAlignment(MaybeAlign(SGVar->getAlignment()));
   NewDGV->copyAttributesFrom(SGVar);
   return NewDGV;
@@ -654,9 +654,9 @@
 Function *IRLinker::copyFunctionProto(const Function *SF) {
   // If there is no linkage to be performed or we are linking from the source,
   // bring SF over.
-  auto *F =
-      Function::Create(TypeMap.get(SF->getFunctionType()),
-                       GlobalValue::ExternalLinkage, SF->getName(), &DstM);
+  auto *F = Function::Create(TypeMap.get(SF->getFunctionType()),
+                             GlobalValue::ExternalLinkage,
+                             SF->getAddressSpace(), SF->getName(), &DstM);
   F->copyAttributesFrom(SF);
   F->setAttributes(mapAttributeTypes(F->getContext(), F->getAttributes()));
   return F;
@@ -671,11 +671,11 @@
   auto *Ty = TypeMap.get(SGIS->getValueType());
   GlobalIndirectSymbol *GIS;
   if (isa<GlobalAlias>(SGIS))
-    GIS = GlobalAlias::create(Ty, SGIS->getType()->getPointerAddressSpace(),
+    GIS = GlobalAlias::create(Ty, SGIS->getAddressSpace(),
                               GlobalValue::ExternalLinkage, SGIS->getName(),
                               &DstM);
   else
-    GIS = GlobalIFunc::create(Ty, SGIS->getType()->getPointerAddressSpace(),
+    GIS = GlobalIFunc::create(Ty, SGIS->getAddressSpace(),
                               GlobalValue::ExternalLinkage, SGIS->getName(),
                               nullptr, &DstM);
   GIS->copyAttributesFrom(SGIS);
@@ -695,14 +695,15 @@
     else if (SGV->getValueType()->isFunctionTy())
       NewGV =
           Function::Create(cast<FunctionType>(TypeMap.get(SGV->getValueType())),
-                           GlobalValue::ExternalLinkage, SGV->getName(), &DstM);
+                           GlobalValue::ExternalLinkage, SGV->getAddressSpace(),
+                           SGV->getName(), &DstM);
     else
-      NewGV = new GlobalVariable(
-          DstM, TypeMap.get(SGV->getValueType()),
-          /*isConstant*/ false, GlobalValue::ExternalLinkage,
-          /*init*/ nullptr, SGV->getName(),
-          /*insertbefore*/ nullptr, SGV->getThreadLocalMode(),
-          SGV->getType()->getAddressSpace());
+      NewGV =
+          new GlobalVariable(DstM, TypeMap.get(SGV->getValueType()),
+                             /*isConstant*/ false, GlobalValue::ExternalLinkage,
+                             /*init*/ nullptr, SGV->getName(),
+                             /*insertbefore*/ nullptr,
+                             SGV->getThreadLocalMode(), SGV->getAddressSpace());
   }
 
   if (ForDefinition)
@@ -918,7 +919,7 @@
   GlobalVariable *NG = new GlobalVariable(
       DstM, NewType, SrcGV->isConstant(), SrcGV->getLinkage(),
       /*init*/ nullptr, /*name*/ "", DstGV, SrcGV->getThreadLocalMode(),
-      SrcGV->getType()->getAddressSpace());
+      SrcGV->getAddressSpace());
 
   NG->copyAttributesFrom(SrcGV);
   forceRenaming(NG, SrcGV->getName());
Index: llvm/test/Linker/addrspace.ll
===================================================================
--- /dev/null
+++ llvm/test/Linker/addrspace.ll
@@ -0,0 +1,9 @@
+; RUN: llvm-link %s -S | FileCheck %s
+
+@G = addrspace(2) global i32 256 
+; CHECK: @G = addrspace(2) global i32
+
+define void @foo() addrspace(3) {
+; CHECK: define void @foo() addrspace(3)
+  ret void
+}