Introduce the notion of function addresses in Subzero.

src/IceTranslator.cpp

Index: src/IceTranslator.cpp
diff --git a/src/IceTranslator.cpp b/src/IceTranslator.cpp
index e86d60a304d6155751ce836693851590270a46d4..2976cd4473d732c9207f0e0d31a47f9a09ab9f6c 100644
--- a/src/IceTranslator.cpp
+++ b/src/IceTranslator.cpp
@@ -54,7 +54,7 @@ bool Translator::checkIfUnnamedNameSafe(const IceString &Name, const char *Kind,
   return false;
 }
 
-void Translator::nameUnnamedGlobalAddresses(llvm::Module *Mod) {
+void Translator::nameUnnamedGlobalVariables(llvm::Module *Mod) {
   const IceString &GlobalPrefix = Flags.DefaultGlobalPrefix;
   if (GlobalPrefix.empty())
     return;
@@ -110,12 +110,12 @@ void Translator::emitConstants() {
     Func->getTarget()->emitConstants();
 }
 
-void Translator::lowerGlobals(const GlobalAddressList &GlobalAddresses) {
+void Translator::lowerGlobals(const GlobalVariableListType &GlobalVariables) {
   llvm::OwningPtr<Ice::TargetGlobalInitLowering> GlobalLowering(
       Ice::TargetGlobalInitLowering::createLowering(Ctx->getTargetArch(), Ctx));
   bool DisableTranslation = Ctx->getFlags().DisableTranslation;
-  for (const Ice::GlobalAddress *Addr : GlobalAddresses) {
-    GlobalLowering->lower(*Addr, DisableTranslation);
+  for (const Ice::GlobalVariable *Global : GlobalVariables) {
+    GlobalLowering->lower(*Global, DisableTranslation);
   }
   GlobalLowering.reset();
 }