$7ec14918 block-function-declaration-order.js:1:1
  Registers: 7
  Blocks:    1
  Constants:
    [0] = Undefined

block0:
  [   0] GetLexicalEnvironment dst:reg4
  [   8] CreateLexicalEnvironment dst:reg5, parent:reg4, capacity:0
  [  18] CreateMutableBinding environment:reg5, `f1`, can_be_deleted:false
  [  28] NewFunction dst:reg6, shared_function_data_index:0
  [  40] InitializeLexicalBinding `f1`, src:reg6
  [  58] CreateMutableBinding environment:reg5, `f2`, can_be_deleted:false
  [  68] NewFunction dst:reg6, shared_function_data_index:1
  [  80] InitializeLexicalBinding `f2`, src:reg6
  [  98] GetBinding dst:reg6, `f1`
  [  b0] SetVariableBinding `f1`, src:reg6
  [  c8] GetBinding dst:reg6, `f2`
  [  e0] SetVariableBinding `f2`, src:reg6
  [  f8] SetLexicalEnvironment environment:reg4
  [ 100] End value:Undefined