(module
 (type $0 (func))
 (func $a (; 0 ;) (type $0)
  (if
   (i32.const 1)
   (unreachable)
  )
 )
 (func $b (; 1 ;) (type $0)
  (if
   (i32.const 1)
   (unreachable)
   (unreachable)
  )
 )
 (func $a-block (; 2 ;) (type $0)
  (block $block
   (if
    (i32.const 1)
    (unreachable)
   )
  )
 )
 (func $b-block (; 3 ;) (type $0)
  (block $block
   (if
    (i32.const 1)
    (unreachable)
    (unreachable)
   )
  )
 )
 (func $a-prepost (; 4 ;) (type $0)
  (nop)
  (if
   (i32.const 1)
   (unreachable)
  )
  (nop)
 )
 (func $b-prepost (; 5 ;) (type $0)
  (nop)
  (if
   (i32.const 1)
   (unreachable)
   (unreachable)
  )
  (nop)
 )
 (func $a-block-prepost (; 6 ;) (type $0)
  (nop)
  (block $block
   (if
    (i32.const 1)
    (unreachable)
   )
  )
  (nop)
 )
 (func $b-block-prepost (; 7 ;) (type $0)
  (nop)
  (block $block
   (if
    (i32.const 1)
    (unreachable)
    (unreachable)
   )
  )
  (nop)
 )
 (func $recurse (; 8 ;) (type $0)
  (block $a
   (nop)
   (block $b
    (nop)
    (br $b)
    (nop)
   )
   (nop)
  )
 )
 (func $recurse-b (; 9 ;) (type $0)
  (block $a
   (nop)
   (block $b
    (nop)
    (br $a)
    (nop)
   )
   (nop)
  )
 )
)