Modify FinalizeLinkage to chagen global variables.

Author: s-perron

llvm/lib/Transforms/HLSL/DXILFinalizeLinkage.cpp

@@ -9,7 +9,6 @@
 #include "llvm/Transforms/HLSL/DXILFinalizeLinkage.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/GlobalValue.h"
-#include "llvm/IR/Metadata.h"
 #include "llvm/IR/Module.h"
 
 #define DEBUG_TYPE "dxil-finalize-linkage"
@@ -19,6 +18,12 @@ using namespace llvm;
 static bool finalizeLinkage(Module &M) {
   SmallPtrSet<Function *, 8> Funcs;
 
+  for(auto &Var : M.globals()) {
+    if (Var.getLinkage() == GlobalValue::ExternalLinkage) {
+      Var.setLinkage(GlobalValue::InternalLinkage);
+    }
+  }
+
   // Collect non-entry and non-exported functions to set to internal linkage.
   for (Function &EF : M.functions()) {
     if (EF.isIntrinsic())