Allow unnamed_addr on declarations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123529 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 3 deletions

diff --git a/lib/Linker/LinkModules.cpp b/lib/Linker/LinkModules.cpp
index 4b4c72bf27..ec39c93227 100644
--- a/lib/Linker/LinkModules.cpp
+++ b/lib/Linker/LinkModules.cpp
@@ -352,8 +352,6 @@ static void CopyGVAttributes(GlobalValue *DestGV, const GlobalValue *SrcGV) {
   unsigned Alignment = std::max(DestGV->getAlignment(), SrcGV->getAlignment());
   DestGV->copyAttributesFrom(SrcGV);
   DestGV->setAlignment(Alignment);
-  if (SrcGV->hasUnnamedAddr())
-    DestGV->setUnnamedAddr(true);
 }
 
 /// GetLinkageResult - This analyzes the two global values and determines what
@@ -521,6 +519,8 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
       continue;
     }
 
+    bool HasUnnamedAddr = SGV->hasUnnamedAddr() && DGV->hasUnnamedAddr();
+
     // If the visibilities of the symbols disagree and the destination is a
     // prototype, take the visibility of its input.
     if (DGV->isDeclaration())
@@ -565,6 +565,9 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
                            DGV->getName(), 0, false,
                            SGV->getType()->getAddressSpace());
 
+      // Set the unnamed_addr.
+      NewDGV->setUnnamedAddr(HasUnnamedAddr);
+
       // Propagate alignment, section, and visibility info.
       CopyGVAttributes(NewDGV, SGV);
       DGV->replaceAllUsesWith(ConstantExpr::getBitCast(NewDGV,
@@ -609,8 +612,9 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
                      "': symbol multiple defined");
     }
 
-    // Set calculated linkage
+    // Set calculated linkage and unnamed_addr
     DGV->setLinkage(NewLinkage);
+    DGV->setUnnamedAddr(HasUnnamedAddr);
 
     // Make sure to remember this mapping...
     ValueMap[SGV] = ConstantExpr::getBitCast(DGV, SGV->getType());