code: def vectorize(f, mod, ctx):
      global loops
  
      tvm.tir.stmt_functor.post_order_visit(f.body, find_width8)
  
      if not loops:
          return f
  
      # The last list arugment indicates what kinds of nodes will be transformed.
      # Thus, in this case only `For` nodes will call `vectorize8`
      return f.with_body(
          tvm.tir.stmt_functor.ir_transform(
              f.body, None, vectorize8, ["tir.For"]
          )
      )
  
imports: import tvm
  from tvm import te
  import numpy
label_desc: Use image node_id 3 for calling a global function with example usage: vectorize(f, mod, ctx) and returns: f, f