$49b95e06 eval-same-function.js:10:1
  Registers: 7
  Blocks:    1
  Constants:
    [0] = Undefined

block0:
  [   0] GetGlobal dst:reg6, `foo`
  [  10] Call dst:reg5, callee:reg6, this_value:Undefined, foo
  [  30] End value:reg5


foo$3e35f384 eval-same-function.js:6:9
  Registers: 8
  Blocks:    1
  Constants:
    [0] = String("var x = 1")
    [1] = Undefined
    [2] = Int32(42)

block0:
  [   0] CreateArguments is_immutable:false
  [  10] DynamicGetCalleeAndThisFromEnvironment callee:reg6, this_value:reg7, `eval`
  [  28] CallDirectEval dst:reg5, callee:reg6, this_value:reg7, eval, arguments:[String("var x = 1")]
  [  50] DynamicGetBinding dst:reg6, `Number`
  [  60] CallConstruct dst:reg5, callee:reg6, Number, arguments:[Int32(42)]
  [  80] Return value:reg5


eval$e1340763 line 1, column 1
  Registers: 6
  Blocks:    1
  Constants:
    [0] = Int32(1)
    [1] = Undefined

block0:
  [   0] ResolveBinding dst:reg5, `x`
  [  10] SetResolvedBinding environment:reg5, `x`, src:Int32(1)
  [  20] End value:Undefined