jit.t

local C = terralib.includecstring [[
  #include <stdio.h>
]]

function makeAdder(x)
  print("makeAdder(" .. x .. ")")
  return terra(y : int)
    return x + y
  end
end

local jitAdder = terralib.cast({int} -> {int} -> int, terralib.memoize(function(x)
  return terralib.cast({int} -> int,  makeAdder(x):compile())
end))

terra main()
  for i = 0, 5 do
    var f = jitAdder(i)
    C.printf("%d\n", f(100))
  end
  for i = 0, 10 do
    var f = jitAdder(i)
    C.printf("%d\n", f(200))
  end
end

main()

output

makeAdder(0)
100
makeAdder(1)
101
makeAdder(2)
102
makeAdder(3)
103
makeAdder(4)
104
200
201
202
203
204
makeAdder(5)
205
makeAdder(6)
206
makeAdder(7)
207
makeAdder(8)
208
makeAdder(9)
209