Goto symex: remove unused functions

Author: smowton

src/goto-symex/goto_symex.h

@@ -223,14 +223,6 @@ class goto_symext
   virtual void dereference(exprt &, statet &, bool write);
 
   void dereference_rec(exprt &, statet &, guardt &, bool write);
-
-  void dereference_rec_address_of(
-    exprt &,
-    statet &,
-    guardt &);
-
-  static bool is_index_member_symbol_if(const exprt &expr);
-
   exprt address_arithmetic(
     const exprt &,
     statet &,

src/goto-symex/symex_dereference.cpp

@@ -23,71 +23,6 @@ Author: Daniel Kroening, [email protected]
 
 #include "symex_dereference_state.h"
 
-void goto_symext::dereference_rec_address_of(
-  exprt &expr,
-  statet &state,
-  guardt &guard)
-{
-  // Could be member, could be if, could be index.
-
-  if(expr.id()==ID_member)
-    dereference_rec_address_of(
-      to_member_expr(expr).struct_op(), state, guard);
-  else if(expr.id()==ID_if)
-  {
-    // the condition is not an address
-    dereference_rec(
-      to_if_expr(expr).cond(), state, guard, false);
-
-    // add to guard?
-    dereference_rec_address_of(
-      to_if_expr(expr).true_case(), state, guard);
-    dereference_rec_address_of(
-      to_if_expr(expr).false_case(), state, guard);
-  }
-  else if(expr.id()==ID_index)
-  {
-    // the index is not an address
-    dereference_rec(
-      to_index_expr(expr).index(), state, guard, false);
-
-    // the array _is_ an address
-    dereference_rec_address_of(
-      to_index_expr(expr).array(), state, guard);
-  }
-  else
-  {
-    // give up and dereference
-
-    dereference_rec(expr, state, guard, false);
-  }
-}
-
-bool goto_symext::is_index_member_symbol_if(const exprt &expr)
-{
-  // Could be member, could be if, could be index.
-
-  if(expr.id()==ID_member)
-  {
-    return is_index_member_symbol_if(
-      to_member_expr(expr).struct_op());
-  }
-  else if(expr.id()==ID_if)
-  {
-    return
-      is_index_member_symbol_if(to_if_expr(expr).true_case()) &&
-      is_index_member_symbol_if(to_if_expr(expr).false_case());
-  }
-  else if(expr.id()==ID_index)
-  {
-    return is_index_member_symbol_if(to_index_expr(expr).array());
-  }
-  else if(expr.id()==ID_symbol)
-    return true;
-  else
-    return false;
-}
-
 /// Evaluate an ID_address_of expression
 exprt goto_symext::address_arithmetic(
   const exprt &expr,