test/passes/remove-unused-brs_generate-stack-ir_print-stack-ir.txt

(module
 (type $0 (func (param i64)))
 (func $0 (param $var$0 i64)
  (block $label$1
   (block $label$2
    (loop $label$3
     (local.tee $var$0
      (block $label$4
       (unreachable)
      )
     )
    )
    (unreachable)
   )
  )
 )
)
(module
 (type $0 (func (param i64)))
 (func $0 (param $var$0 i64)
  block $label$2
   loop $label$3
    block $label$4
     unreachable
    end
    unreachable
   end
   unreachable
  end
  unreachable
 )
)