fun i32 @fibonacci (i32) {
init:
  bid: b0
  allocations:


block b0:
  %b0:p0:i32:n
  %b0:i0:i32 = add %b0:p0:i32 %b0:p0:i32
  %b0:i1:u1 = cmp ne %b0:i0:i32 0:i32
  br %b0:i1:u1, b2(), b3()

block b2:
  ret %b0:p0:i32

block b3:
  ret undef:i32
}

fun i32 @main () {
init:
  bid: b0
  allocations:


block b0:
  ret 1:i32
}