don't do any linkage, not even type resolution, of symbols that have

internal linkage.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53547 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Linker/LinkModules.cpp b/lib/Linker/LinkModules.cpp
index 5979dc6fbc6f3a578829b0a4e44fc775649af041..1001fbdf6a1dc6a1af3c8f77691dd045b2fbf3e0 100644 (file)
--- a/lib/Linker/LinkModules.cpp
+++ b/lib/Linker/LinkModules.cpp
@@ -548,13 +548,15 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
       DGV = cast_or_null<GlobalValue>(DestSymTab.lookup(SGV->getNameStart(),
                                                         SGV->getNameEnd()));
     
+    // If we found a global with the same name in the dest module, but it has
+    // internal linkage, we are really not doing any linkage here.
+    if (DGV && DGV->hasInternalLinkage())
+      DGV = 0;
+    
     // If types don't agree due to opaque types, try to resolve them.
     if (DGV && DGV->getType() != SGV->getType())
       RecursiveResolveTypes(SGV->getType(), DGV->getType());
 
-    if (DGV && DGV->hasInternalLinkage())
-      DGV = 0;
-
     assert((SGV->hasInitializer() || SGV->hasExternalWeakLinkage() ||
             SGV->hasExternalLinkage() || SGV->hasDLLImportLinkage()) &&
            "Global must either be external or have an initializer!");
@@ -901,13 +903,15 @@ static bool LinkFunctionProtos(Module *Dest, const Module *Src,
       DGV = cast_or_null<GlobalValue>(DestSymTab.lookup(SF->getNameStart(),
                                                         SF->getNameEnd()));
     
+    // If we found a global with the same name in the dest module, but it has
+    // internal linkage, we are really not doing any linkage here.
+    if (DGV && DGV->hasInternalLinkage())
+      DGV = 0;
+
     // If types don't agree due to opaque types, try to resolve them.
     if (DGV && DGV->getType() != SF->getType())
       RecursiveResolveTypes(SF->getType(), DGV->getType());
 
-    if (DGV && DGV->hasInternalLinkage())
-      DGV = 0;
-
     // If there is no linkage to be performed, just bring over SF without
     // modifying it.
     if (DGV == 0) {