code: def expected(self):
      @I.ir_module
      class mod:
          @T.prim_func
          def __tvm_main__(
              A: T.Buffer(256, "int8"),
              D: T.Buffer(256, "int8"),
              workspace_var: T.handle("uint8"),
          ):
              workspace = T.match_buffer(
                  workspace_var, 512, "uint8", strides=[1], align=16
              )
              B: T.handle("int8") = T.address_of(workspace[256])
              T.call_extern(
                  "subroutine", A.data, B, workspace.data, dtype="int32"
              )
              C: T.handle("int8") = T.address_of(workspace[0])
              T.call_extern(
                  "subroutine", B, C, workspace.data, dtype="int32"
              )
              T.call_extern(
                  "subroutine", C, D.data, workspace.data, dtype="int32"
              )
  
          @T.prim_func
          def subroutine(
              A: T.Buffer(256, "int8"),
              B: T.Buffer(256, "int8"),
              workspace_var: T.handle("uint8"),
          ):
              workspace = T.match_buffer(
                  workspace_var, 512, "uint8", strides=[1], align=16
              )
              for i in range(256):
                  B[i] = A[i]
  
      return mod
  
imports: import sys
  import pytest
  import tvm
  from tvm import PoolInfoProperties, WorkspacePoolInfo
  from tvm.script import tir, ir
  from tvm.target import Target
  from tvm.tir import stmt_functor
  from tvm.tir.usmp import utils
label_desc: Use image node_id 3 for calling the TestMergeAllocations obj's underlying member method code with example usage: obj.expected() and returns: mod