(module
 (type $0 (func))
 (func $a (type $0)
  (if
   (i32.const 1)
   (unreachable)
  )
 )
 (func $b (type $0)
  (if
   (i32.const 1)
   (unreachable)
   (unreachable)
  )
 )
 (func $a-block (type $0)
  (if
   (i32.const 1)
   (unreachable)
  )
 )
 (func $b-block (type $0)
  (if
   (i32.const 1)
   (unreachable)
   (unreachable)
  )
 )
 (func $a-prepost (type $0)
  (nop)
  (if
   (i32.const 1)
   (unreachable)
  )
  (nop)
 )
 (func $b-prepost (type $0)
  (nop)
  (if
   (i32.const 1)
   (unreachable)
   (unreachable)
  )
  (nop)
 )
 (func $a-block-prepost (type $0)
  (nop)
  (block
   (if
    (i32.const 1)
    (unreachable)
   )
  )
  (nop)
 )
 (func $b-block-prepost (type $0)
  (nop)
  (block
   (if
    (i32.const 1)
    (unreachable)
    (unreachable)
   )
  )
  (nop)
 )
 (func $recurse (type $0)
  (block $a
   (nop)
   (block $b
    (nop)
    (br $b)
    (nop)
   )
   (nop)
  )
 )
 (func $recurse-b (type $0)
  (block $a
   (nop)
   (block $b
    (nop)
    (br $a)
    (nop)
   )
   (nop)
  )
 )
)