merge-blocks.txt

(module
 (type $0 (func))
 (type $1 (func (param i32)))
 (type $2 (func (result i32)))
 (type $3 (func (result f32)))
 (global $global$0 (mut i32) (i32.const 10))
 (func $drop-block (; 0 ;) (type $0)
  (block $block
   (drop
    (i32.const 0)
   )
  )
 )
 (func $drop-block-br (; 1 ;) (type $0)
  (block $block
   (drop
    (block $x (result i32)
     (br $x
      (i32.const 1)
     )
     (i32.const 0)
    )
   )
  )
 )
 (func $drop-block-br-if (; 2 ;) (type $0)
  (block $block
   (drop
    (i32.const 1)
   )
   (block $x
    (br_if $x
     (i32.const 2)
    )
    (drop
     (i32.const 0)
    )
   )
  )
 )
 (func $undroppable-block-br-if (; 3 ;) (type $1) (param $0 i32)
  (block $block
   (drop
    (block $x (result i32)
     (call $undroppable-block-br-if
      (br_if $x
       (i32.const 1)
       (i32.const 2)
      )
     )
     (i32.const 0)
    )
   )
  )
 )
 (func $drop-block-nested-br-if (; 4 ;) (type $0)
  (block $block
   (block $x
    (if
     (i32.const 100)
     (block $block0
      (drop
       (i32.const 1)
      )
      (br_if $x
       (i32.const 2)
      )
      (nop)
     )
    )
    (drop
     (i32.const 0)
    )
   )
  )
 )
 (func $drop-unreachable-br_if (; 5 ;) (type $2) (result i32)
  (block $label$0 (result i32)
   (block $label$2 (result i32)
    (br_if $label$2
     (br $label$0
      (i32.const 538976371)
     )
     (i32.const 1918987552)
    )
   )
  )
 )
 (func $drop-block-squared-iloop (; 6 ;) (type $0)
  (drop
   (block $label$0 (result i32)
    (drop
     (block $label$1
      (loop $label$2
       (br $label$2)
      )
     )
    )
   )
  )
 )
 (func $br-goes-away-label2-becomes-unreachable (; 7 ;) (type $0)
  (block $block
   (drop
    (block $label$1 (result i32)
     (block $label$2
      (drop
       (br_if $label$1
        (unreachable)
        (i32.eqz
         (br $label$2)
        )
       )
      )
     )
     (i32.const 1)
    )
   )
  )
 )
 (func $loop-block-drop-block-return (; 8 ;) (type $0)
  (loop $label$4
   (block $label$5
    (drop
     (block $label$6 (result i32)
      (return)
     )
    )
   )
  )
 )
 (func $if-block (; 9 ;) (type $0)
  (block $label
   (if
    (i32.const 1)
    (block $block
     (drop
      (i32.const 2)
     )
     (drop
      (i32.const 3)
     )
    )
   )
  )
 )
 (func $if-block-bad (; 10 ;) (type $0)
  (block $label
   (if
    (br $label)
    (block $block
     (drop
      (i32.const 2)
     )
     (drop
      (i32.const 3)
     )
    )
   )
  )
 )
 (func $if-block-br (; 11 ;) (type $0)
  (block $label
   (if
    (i32.const 1)
    (br $label)
   )
  )
 )
 (func $if-block-br-1 (; 12 ;) (type $0)
  (block $label
   (if
    (i32.const 1)
    (br $label)
    (drop
     (i32.const 3)
    )
   )
  )
 )
 (func $if-block-br-2 (; 13 ;) (type $0)
  (block $label
   (if
    (i32.const 1)
    (drop
     (i32.const 3)
    )
    (br $label)
   )
  )
 )
 (func $if-block-br-3 (; 14 ;) (type $0)
  (block $label
   (if
    (i32.const 1)
    (br $label)
    (br $label)
   )
  )
 )
 (func $if-block-br-4-eithre (; 15 ;) (type $0)
  (block $label
   (if
    (i32.const 1)
    (drop
     (i32.const 2)
    )
    (drop
     (i32.const 3)
    )
   )
  )
 )
 (func $if-block-br-5-value (; 16 ;) (type $2) (result i32)
  (block $label (result i32)
   (if (result i32)
    (i32.const 1)
    (i32.const 2)
    (i32.const 3)
   )
  )
 )
 (func $restructure-if-outerType-change (; 17 ;) (type $0)
  (loop $label$1
   (br_if $label$1
    (block $label$2
     (block $label$3
      (if
       (block $label$4
        (unreachable)
       )
       (br $label$3)
      )
     )
     (unreachable)
    )
   )
  )
 )
 (func $if-arm-unreachable (; 18 ;) (type $0)
  (block $label$1
   (if
    (unreachable)
    (nop)
    (unreachable)
   )
  )
 )
 (func $propagate-type-if-we-optimize (; 19 ;) (type $0)
  (if
   (i32.const 1)
   (nop)
   (block $block
    (drop
     (loop $label$3 (result i64)
      (br_if $label$3
       (block $label$4 (result i32)
        (if
         (i32.const 0)
         (unreachable)
         (unreachable)
        )
       )
      )
      (i64.const -9)
     )
    )
    (unreachable)
   )
  )
 )
 (func $br-value-blocktypechange (; 20 ;) (type $3) (result f32)
  (global.set $global$0
   (i32.const 0)
  )
  (block $label$1 (result f32)
   (global.set $global$0
    (i32.const 0)
   )
   (br_if $label$1
    (unreachable)
    (i32.const 0)
   )
  )
 )
)