$bfb1383b default-param-self-reference.js:2:1
  Registers: 7
  Blocks:    1
  Constants:
    [0] = Undefined
    [1] = Int32(1)

block0:
  [   0] GetGlobal dst:reg6, `f`
  [  18] Call dst:reg5, callee:reg6, this_value:Undefined, f, arguments:[Int32(1)]
  [  40] End value:reg5


f$e162c485 default-param-self-reference.js:1:16
  Registers: 5
  Blocks:    3
  Constants:
    [0] = <Empty>
    [1] = Undefined

block0:
  [   0] JumpUndefined condition:arg0, true_target:block1, false_target:block2

block1:
  [  10] Mov dst:arg0, src:<Empty>
  [  20] ThrowIfTDZ src:arg0
  [  28] Mov dst:arg0, src:arg0

block2:
  [  38] End value:Undefined