remove old code (#81)

Author: aviatesk

src/LoweredCodeUtils.jl

@@ -13,7 +13,7 @@ using JuliaInterpreter
 using JuliaInterpreter: SSAValue, SlotNumber, Frame
 using JuliaInterpreter: @lookup, moduleof, pc_expr, step_expr!, is_global_ref, is_quotenode_egal, whichtt,
                         next_until!, finish_and_return!, get_return, nstatements, codelocation, linetable,
-                        is_return, lookup_return, is_GotoIfNot, is_ReturnNode
+                        is_return, lookup_return
 
 include("packagedef.jl")
 

src/codeedges.jl

@@ -307,10 +307,10 @@ function add_links!(target::Pair{Union{SSAValue,SlotNumber,NamedVar},Links}, @no
         for i in arng
             add_links!(target, stmt.args[i], cl)
         end
-    elseif is_GotoIfNot(stmt)
-        add_links!(target, (stmt::Core.GotoIfNot).cond, cl)
-    elseif is_ReturnNode(stmt)
-        add_links!(target, (stmt::Core.ReturnNode).val, cl)
+    elseif stmt isa Core.GotoIfNot
+        add_links!(target, stmt.cond, cl)
+    elseif stmt isa Core.ReturnNode
+        add_links!(target, stmt.val, cl)
     end
     return nothing
 end