Write out global initializers and data rel directly to ELF file.

src/IceTargetLoweringX8632.h

Index: src/IceTargetLoweringX8632.h
diff --git a/src/IceTargetLoweringX8632.h b/src/IceTargetLoweringX8632.h
index cd82d7ae9427c266e67906f2374e901727f492ba..3cb266ccef597171b0aa1dbe5432f3a3b6e8e506 100644
--- a/src/IceTargetLoweringX8632.h
+++ b/src/IceTargetLoweringX8632.h
@@ -499,7 +499,9 @@ public:
     return new TargetGlobalInitX8632(Ctx);
   }
 
-  virtual void lower(const VariableDeclaration &Var) final;
+  void lower(const VariableDeclaration &Var) final;
+
+  void lowerGlobalsELF(const VariableDeclarationList &Vars) final;
 
 protected:
   TargetGlobalInitX8632(GlobalContext *Ctx);