Teach ModuleLinker::getLinkageResult about materialisable functions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143316 91177308-0d34-0410-b5e6-96231b3b80d8

Author: pcc

lib/Linker/LinkModules.cpp

@@ -446,7 +446,7 @@ bool ModuleLinker::getLinkageResult(GlobalValue *Dest, const GlobalValue *Src,
   assert(!Src->hasLocalLinkage() &&
          "If Src has internal linkage, Dest shouldn't be set!");
 
-  bool SrcIsDeclaration = Src->isDeclaration();
+  bool SrcIsDeclaration = Src->isDeclaration() && !Src->isMaterializable();
   bool DestIsDeclaration = Dest->isDeclaration();
 
   if (SrcIsDeclaration) {