(module
 (type $none_=>_none (func))
 (type $none_=>_i32 (func (result i32)))
 (memory $0 1)
 (func $push1
  (local $x i32)
  (block $out
   (br_if $out
    (i32.const 2)
   )
   (local.set $x
    (i32.const 1)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $push2
  (local $x i32)
  (local $y i32)
  (block $out
   (br_if $out
    (i32.const 2)
   )
   (local.set $x
    (i32.const 1)
   )
   (local.set $y
    (i32.const 3)
   )
   (drop
    (local.get $x)
   )
   (drop
    (local.get $y)
   )
  )
 )
 (func $push1-twice
  (local $x i32)
  (block $out
   (br_if $out
    (i32.const 2)
   )
   (br_if $out
    (i32.const 3)
   )
   (local.set $x
    (i32.const 1)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $push1-twiceb
  (local $x i32)
  (block $out
   (br_if $out
    (i32.const 2)
   )
   (nop)
   (br_if $out
    (i32.const 3)
   )
   (local.set $x
    (i32.const 1)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $push2-twice
  (local $x i32)
  (local $y i32)
  (block $out
   (br_if $out
    (i32.const 2)
   )
   (br_if $out
    (i32.const 2)
   )
   (local.set $x
    (i32.const 1)
   )
   (local.set $y
    (i32.const 3)
   )
   (drop
    (local.get $x)
   )
   (drop
    (local.get $y)
   )
  )
 )
 (func $ignore-last
  (local $x i32)
  (block $out
   (local.set $x
    (i32.const 1)
   )
   (br_if $out
    (i32.const 2)
   )
  )
 )
 (func $ignore-last2
  (local $x i32)
  (block $out
   (local.set $x
    (i32.const 1)
   )
   (nop)
   (nop)
   (br_if $out
    (i32.const 2)
   )
  )
 )
 (func $push-if
  (local $x i32)
  (block $out
   (if
    (i32.const 2)
    (nop)
   )
   (local.set $x
    (i32.const 1)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $push-dropped (result i32)
  (local $x i32)
  (block $out (result i32)
   (drop
    (br_if $out
     (i32.const 2)
     (i32.const 3)
    )
   )
   (local.set $x
    (i32.const 1)
   )
   (drop
    (local.get $x)
   )
   (i32.const 4)
  )
 )
 (func $push-past-stuff
  (local $x i32)
  (block $out
   (call $push-past-stuff)
   (drop
    (i32.const 1)
   )
   (br_if $out
    (i32.const 2)
   )
   (local.set $x
    (i32.const 1)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $fail-then-push
  (local $x i32)
  (local $y i32)
  (block $out
   (local.set $x
    (i32.const 1)
   )
   (drop
    (local.get $x)
   )
   (br_if $out
    (i32.const 2)
   )
   (br_if $out
    (i32.const 3)
   )
   (local.set $y
    (i32.const 1)
   )
   (drop
    (local.get $x)
   )
   (drop
    (local.get $y)
   )
  )
 )
 (func $used
  (local $x i32)
  (block $out
   (local.set $x
    (i32.const 1)
   )
   (br_if $out
    (local.get $x)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $not-sfa
  (local $x i32)
  (local.set $x
   (i32.const 1)
  )
  (block $out
   (local.set $x
    (i32.const 1)
   )
   (br_if $out
    (i32.const 2)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $not-sfa2
  (local $x i32)
  (drop
   (local.get $x)
  )
  (block $out
   (local.set $x
    (i32.const 1)
   )
   (br_if $out
    (i32.const 2)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $used-out
  (local $x i32)
  (block $out
   (local.set $x
    (i32.const 1)
   )
   (br_if $out
    (i32.const 2)
   )
   (drop
    (local.get $x)
   )
  )
  (drop
   (local.get $x)
  )
 )
 (func $value-might-interfere
  (local $x i32)
  (block $out
   (br_if $out
    (i32.const 2)
   )
   (local.set $x
    (i32.load
     (i32.const 0)
    )
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $value-interferes
  (local $x i32)
  (block $out
   (local.set $x
    (i32.load
     (i32.const 0)
    )
   )
   (i32.store
    (i32.const 1)
    (i32.const 3)
   )
   (br_if $out
    (i32.const 2)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $value-interferes-accumulation
  (local $x i32)
  (block $out
   (local.set $x
    (i32.load
     (i32.const 0)
    )
   )
   (nop)
   (i32.store
    (i32.const 1)
    (i32.const 3)
   )
   (nop)
   (br_if $out
    (i32.const 2)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $value-interferes-in-pushpoint
  (local $x i32)
  (block $out
   (local.set $x
    (i32.load
     (i32.const 0)
    )
   )
   (if
    (i32.const 1)
    (call $value-interferes)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $values-might-interfere
  (local $x i32)
  (local $y i32)
  (block $out
   (local.set $x
    (call $push-dropped)
   )
   (local.set $y
    (call $push-dropped)
   )
   (br_if $out
    (i32.const 2)
   )
   (drop
    (local.get $x)
   )
   (drop
    (local.get $y)
   )
  )
 )
 (func $unpushed-interferes
  (local $x i32)
  (local $y i32)
  (block $out
   (local.set $x
    (call $push-dropped)
   )
   (local.set $y
    (call $push-dropped)
   )
   (br_if $out
    (i32.const 2)
   )
   (drop
    (local.get $x)
   )
   (drop
    (local.get $y)
   )
  )
  (drop
   (local.get $y)
  )
 )
 (func $unpushed-ignorable
  (local $x i32)
  (local $y i32)
  (block $out
   (local.set $x
    (i32.const 1)
   )
   (br_if $out
    (i32.const 2)
   )
   (local.set $y
    (i32.const 3)
   )
   (drop
    (local.get $x)
   )
   (drop
    (local.get $y)
   )
  )
  (drop
   (local.get $x)
  )
 )
 (func $unpushed-ignorable-side-effect
  (local $x i32)
  (local $y i32)
  (block $out
   (local.set $x
    (call $push-dropped)
   )
   (br_if $out
    (i32.const 2)
   )
   (local.set $y
    (i32.const 3)
   )
   (drop
    (local.get $x)
   )
   (drop
    (local.get $y)
   )
  )
 )
 (func $unpushed-side-effect-into-drop
  (local $x i32)
  (block $out
   (local.set $x
    (call $push-dropped)
   )
   (br_if $out
    (i32.const 1)
   )
   (drop
    (local.get $x)
   )
  )
 )
 (func $unpushed-side-effect-into-if
  (local $x i32)
  (block $out
   (local.set $x
    (call $push-dropped)
   )
   (br_if $out
    (i32.const 1)
   )
   (if
    (local.get $x)
    (nop)
   )
  )
 )
)