middle: trans: adt: remove dead code

Author: emberian

src/librustc/middle/trans/adt.rs

@@ -644,25 +644,6 @@ pub fn num_args(r: &Repr, discr: Disr) -> uint {
     }
 }
 
-/// Access a field, at a point when the value's case is known.
-pub fn deref_ty(ccx: &CrateContext, r: &Repr) -> ty::t {
-    match *r {
-        CEnum(..) => {
-            ccx.sess().bug("deref of c-like enum")
-        }
-        Univariant(ref st, _) => {
-            *st.fields.get(0)
-        }
-        General(_, ref cases) => {
-            assert!(cases.len() == 1);
-            *cases.get(0).fields.get(0)
-        }
-        NullablePointer{ .. } => {
-            ccx.sess().bug("deref of nullable ptr")
-        }
-    }
-}
-
 /// Access a field, at a point when the value's case is known.
 pub fn trans_field_ptr(bcx: &Block, r: &Repr, val: ValueRef, discr: Disr,
                        ix: uint) -> ValueRef {
@@ -896,11 +877,3 @@ fn const_struct_field(ccx: &CrateContext, val: ValueRef, ix: uint)
         real_ix = real_ix + 1;
     }
 }
-
-/// Is it safe to bitcast a value to the one field of its one variant?
-pub fn is_newtypeish(r: &Repr) -> bool {
-    match *r {
-        Univariant(ref st, false) => st.fields.len() == 1,
-        _ => false
-    }
-}