$c7ca75d8 switch-local-only-let.js:15:1
  Registers: 11
  Blocks:    1
  Constants:
    [0] = Undefined
    [1] = Int32(1)
    [2] = Int32(2)
    [3] = Int32(3)

block0:
  [   0] GetGlobal dst:reg6, `console`
  [  18] GetById dst:reg7, base:reg6, `log` (console.log)
  [  38] GetGlobal dst:reg9, `switchLocalOnly`
  [  50] Call dst:reg8, callee:reg9, this_value:Undefined, switchLocalOnly, arguments:[Int32(1)]
  [  78] Call dst:reg5, callee:reg7, this_value:reg6, console.log, arguments:[reg8]
  [  a0] GetGlobal dst:reg6, `console`
  [  b8] GetById dst:reg8, base:reg6, `log` (console.log)
  [  d8] GetGlobal dst:reg10, `switchLocalOnly`
  [  f0] Call dst:reg9, callee:reg10, this_value:Undefined, switchLocalOnly, arguments:[Int32(2)]
  [ 118] Call dst:reg7, callee:reg8, this_value:reg6, console.log, arguments:[reg9]
  [ 140] GetGlobal dst:reg8, `console`
  [ 158] GetById dst:reg6, base:reg8, `log` (console.log)
  [ 178] GetGlobal dst:reg10, `switchLocalOnly`
  [ 190] Call dst:reg9, callee:reg10, this_value:Undefined, switchLocalOnly, arguments:[Int32(3)]
  [ 1b8] Call dst:reg5, callee:reg6, this_value:reg8, console.log, arguments:[reg9]
  [ 1e0] End value:reg5


switchLocalOnly$fc47fb27 switch-local-only-let.js:4:5
  Registers: 6
  Blocks:    7
  Locals:    a~0, b~1
  Constants:
    [0] = Int32(1)
    [1] = Int32(2)
    [2] = Int32(10)
    [3] = Int32(20)
    [4] = Int32(0)
    [5] = Undefined

block0:
  [   0] JumpStrictlyEquals lhs:Int32(1), rhs:arg0, true_target:block3, false_target:block1

block1:
  [  18] JumpStrictlyEquals lhs:Int32(2), rhs:arg0, true_target:block4, false_target:block2

block2:
  [  30] Return value:Int32(0)

block3:
  [  38] Mov dst:a~0, src:Int32(10)
  [  48] Return value:a~0

block4:
  [  50] Mov dst:b~1, src:Int32(20)
  [  60] Return value:b~1

block5:
  [  68] Return value:Int32(0)

block6:
  [  70] End value:Undefined


10
20
0