fun unit @sink {
init:
  bid: b0
  allocations:

block b0:
  %b0:p0:unit
  ret unit:unit
}

fun i32 @deadcode {
init:
  bid: b0
  allocations:
    %l0:i32:x
    %l1:i32:y

block b0:
  %b0:i0:i32 = add 100:i32 200:i32
  %b0:i1:i32 = add %b0:i0:i32 300:i32
  %b0:i2:i32 = add %b0:i1:i32 400:i32
  %b0:i3:unit = store %l1:i32 %b0:i0:i32

  br undef:i1 b1() b2()

block b1:
  %b1:i0:unit = nop
  %b1:i1:unit = call @sink(%b1:i0:unit)

  j b3()

block b2:
  %b2:i0:unit = store %l1:i32 42:i32

  j b3()

block b3:
  ret 0:i32
}