2 files changed, 2 insertions, 46 deletions

diff --git a/tools/lto/LTOModule.cpp b/tools/lto/LTOModule.cpp
index 4e9e74f..4cfe9ad 100644
--- a/tools/lto/LTOModule.cpp
+++ b/tools/lto/LTOModule.cpp
@@ -178,16 +178,6 @@ void LTOModule::setTargetTriple(const char *triple) {
 void LTOModule::addDefinedFunctionSymbol(Function *f, Mangler &mangler) {
   // add to list of defined symbols
   addDefinedSymbol(f, mangler, true);
-
-  // add external symbols referenced by this function.
-  for (Function::iterator b = f->begin(); b != f->end(); ++b) {
-    for (BasicBlock::iterator i = b->begin(); i != b->end(); ++i) {
-      for (unsigned count = 0, total = i->getNumOperands();
-           count != total; ++count) {
-        findExternalRefs(i->getOperand(count), mangler);
-      }
-    }
-  }
 }
 
 // Get string that data pointer points to.
@@ -328,12 +318,6 @@ void LTOModule::addDefinedDataSymbol(GlobalValue *v, Mangler &mangler) {
       }
     }
   }
-
-  // add external symbols referenced by this data.
-  for (unsigned count = 0, total = v->getNumOperands();
-       count != total; ++count) {
-    findExternalRefs(v->getOperand(count), mangler);
-  }
 }
 
 
@@ -343,10 +327,6 @@ void LTOModule::addDefinedSymbol(GlobalValue *def, Mangler &mangler,
   if (def->getName().startswith("llvm."))
     return;
 
-  // ignore available_externally
-  if (def->hasAvailableExternallyLinkage())
-    return;
-
   // string is owned by _defines
   SmallString<64> Buffer;
   mangler.getNameWithPrefix(Buffer, def, false);
@@ -471,28 +451,6 @@ void LTOModule::addPotentialUndefinedSymbol(GlobalValue *decl,
 }
 
 
-
-// Find external symbols referenced by VALUE. This is a recursive function.
-void LTOModule::findExternalRefs(Value *value, Mangler &mangler) {
-  if (GlobalValue *gv = dyn_cast<GlobalValue>(value)) {
-    if (!gv->hasExternalLinkage())
-      addPotentialUndefinedSymbol(gv, mangler);
-    // If this is a variable definition, do not recursively process
-    // initializer.  It might contain a reference to this variable
-    // and cause an infinite loop.  The initializer will be
-    // processed in addDefinedDataSymbol().
-    return;
-  }
-
-  // GlobalValue, even with InternalLinkage type, may have operands with
-  // ExternalLinkage type. Do not ignore these operands.
-  if (Constant *c = dyn_cast<Constant>(value)) {
-    // Handle ConstantExpr, ConstantStruct, ConstantArry etc.
-    for (unsigned i = 0, e = c->getNumOperands(); i != e; ++i)
-      findExternalRefs(c->getOperand(i), mangler);
-  }
-}
-
 namespace {
   class RecordStreamer : public MCStreamer {
   public:
@@ -687,7 +645,7 @@ bool LTOModule::ParseSymbols() {
 
   // add functions
   for (Module::iterator f = _module->begin(); f != _module->end(); ++f) {
-    if (f->isDeclaration())
+    if (f->isDeclaration() || f->hasAvailableExternallyLinkage())
       addPotentialUndefinedSymbol(f, mangler);
     else
       addDefinedFunctionSymbol(f, mangler);
@@ -696,7 +654,7 @@ bool LTOModule::ParseSymbols() {
   // add data
   for (Module::global_iterator v = _module->global_begin(),
          e = _module->global_end(); v !=  e; ++v) {
-    if (v->isDeclaration())
+    if (v->isDeclaration() || v->hasAvailableExternallyLinkage())
       addPotentialUndefinedSymbol(v, mangler);
     else
       addDefinedDataSymbol(v, mangler);
diff --git a/tools/lto/LTOModule.h b/tools/lto/LTOModule.h
index 3031512..0b64a90 100644
--- a/tools/lto/LTOModule.h
+++ b/tools/lto/LTOModule.h
@@ -82,8 +82,6 @@ private:
                                                     bool isFunction);
     void                    addPotentialUndefinedSymbol(llvm::GlobalValue* decl, 
                                                         llvm::Mangler &mangler);
-    void                    findExternalRefs(llvm::Value* value, 
-                                                llvm::Mangler& mangler);
     void                    addDefinedFunctionSymbol(llvm::Function* f, 
                                                         llvm::Mangler &mangler);
     void                    addDefinedDataSymbol(llvm::GlobalValue* v,