use recorded tape to impl task copying

Author: KDr2

.github/workflows/MemLayoutGen.yaml

@@ -6,13 +6,12 @@ repo = "https://github.com/TuringLang/Libtask.jl.git"
 version = "0.5.3"
 
 [deps]
-Libdl = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
-Libtask_jll = "3ae2931a-708c-5973-9c38-ccf7496fb450"
+IRTools = "7869d1d1-7146-5819-86e3-90919afe41df"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+MacroTools = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 
 [compat]
-Libtask_jll = "0.5.1"
 julia = "1.3"
 
 [extras]

.github/workflows/tasklayout/memlayout.cpp

@@ -1,21 +1,19 @@
 module Libtask
 
-using Libdl
-using Libtask_jll
+using IRTools
+using MacroTools
 
-export CTask, consume, produce, TArray, tzeros, tfill, TRef
+export CTask, consume, produce
+export TArray, tzeros, tfill, TRef
 
-function __init__()
-    @static if VERSION < v"1.6.0"
-        push!(Libdl.DL_LOAD_PATH,
-              Libtask_jll.get_libtask_julia_path() |> dirname)
-        Libdl.dlopen(Libtask_jll.libtask_julia_path)
-    end
-end
+export TapedTask
+
+include("tapedfunction.jl")
+include("tapedtask.jl")
 
-include("memlayout/main.jl")
-include("ctask.jl")
 include("tarray.jl")
 include("tref.jl")
 
+CTask = TapedTask
+
 end