Module name used instead of Instance name for generic cells

[ganeshgore]

The output for the following JSON code is different in the demo and locally compiled code. in the demo, the blocks are named module2_1 and module2_2 whereas in the local run it's module2 and module2. The demo representation is correct, why the locally compiled version shows a different output.

{
  "creator": "Yosys 0.10.0 (git sha1 UNKNOWN, clang 12.0.1 -fPIC -Os)",
  "modules": {
    "module1": {
      "attributes": {
        "cells_not_processed": "00000000000000000000000000000001",
        "src": "nested_hierarchy.v:14.1-24.10"
      },
      "ports": {
        "in0": {
          "direction": "input",
          "bits": [ 2 ]
        },
        "in1": {
          "direction": "input",
          "bits": [ 3 ]
        },
        "out": {
          "direction": "output",
          "bits": [ 4 ]
        }
      },
      "cells": {
        "module2_0": {
          "hide_name": 0,
          "type": "module2",
          "parameters": {
          },
          "attributes": {
            "module_not_derived": "00000000000000000000000000000001",
            "src": "nested_hierarchy.v:21.13-21.61"
          },
          "port_directions": {
            "in0": "input",
            "in1": "input",
            "out": "output"
          },
          "connections": {
            "in0": [ 2 ],
            "in1": [ 3 ],
            "out": [ 5 ]
          }
        },
        "module2_1": {
          "hide_name": 0,
          "type": "module2",
          "parameters": {
          },
          "attributes": {
            "module_not_derived": "00000000000000000000000000000001",
            "src": "nested_hierarchy.v:22.13-22.61"
          },
          "port_directions": {
            "in0": "input",
            "in1": "input",
            "out": "output"
          },
          "connections": {
            "in0": [ 3 ],
            "in1": [ 5 ],
            "out": [ 4 ]
          }
        }
      },
      "netnames": {
        "in0": {
          "hide_name": 0,
          "bits": [ 2 ],
          "attributes": {
            "src": "nested_hierarchy.v:15.11-15.14"
          }
        },
        "in1": {
          "hide_name": 0,
          "bits": [ 3 ],
          "attributes": {
            "src": "nested_hierarchy.v:16.11-16.14"
          }
        },
        "internal": {
          "hide_name": 0,
          "bits": [ 5 ],
          "attributes": {
            "src": "nested_hierarchy.v:19.10-19.18"
          }
        },
        "out": {
          "hide_name": 0,
          "bits": [ 4 ],
          "attributes": {
            "src": "nested_hierarchy.v:17.12-17.15"
          }
        }
      }
    },
    "module2": {
      "attributes": {
        "blackbox": "00000000000000000000000000000001",
        "cells_not_processed": "00000000000000000000000000000001",
        "src": "nested_hierarchy.v:28.1-33.10"
      },
      "ports": {
        "in0": {
          "direction": "input",
          "bits": [ 2 ]
        },
        "in1": {
          "direction": "input",
          "bits": [ 3 ]
        },
        "out": {
          "direction": "output",
          "bits": [ 4 ]
        }
      },
      "cells": {
      },
      "netnames": {
        "in0": {
          "hide_name": 0,
          "bits": [ 2 ],
          "attributes": {
            "src": "nested_hierarchy.v:29.11-29.14"
          }
        },
        "in1": {
          "hide_name": 0,
          "bits": [ 3 ],
          "attributes": {
            "src": "nested_hierarchy.v:30.11-30.14"
          }
        },
        "out": {
          "hide_name": 0,
          "bits": [ 4 ],
          "attributes": {
            "src": "nested_hierarchy.v:31.12-31.15"
          }
        }
      }
    },
    "top": {
      "attributes": {
        "cells_not_processed": "00000000000000000000000000000001",
        "src": "nested_hierarchy.v:2.1-12.10"
      },
      "ports": {
        "in0": {
          "direction": "input",
          "bits": [ 2 ]
        },
        "in1": {
          "direction": "input",
          "bits": [ 3 ]
        },
        "out0": {
          "direction": "output",
          "bits": [ 4 ]
        }
      },
      "cells": {
        "inst_1_0": {
          "hide_name": 0,
          "type": "module1",
          "parameters": {
          },
          "attributes": {
            "module_not_derived": "00000000000000000000000000000001",
            "src": "nested_hierarchy.v:9.13-9.57"
          },
          "port_directions": {
            "in0": "input",
            "in1": "input",
            "out": "output"
          },
          "connections": {
            "in0": [ 2 ],
            "in1": [ 3 ],
            "out": [ 5 ]
          }
        },
        "inst_1_1": {
          "hide_name": 0,
          "type": "module1",
          "parameters": {
          },
          "attributes": {
            "module_not_derived": "00000000000000000000000000000001",
            "src": "nested_hierarchy.v:10.13-10.58"
          },
          "port_directions": {
            "in0": "input",
            "in1": "input",
            "out": "output"
          },
          "connections": {
            "in0": [ 5 ],
            "in1": [ 2 ],
            "out": [ 4 ]
          }
        }
      },
      "netnames": {
        "in0": {
          "hide_name": 0,
          "bits": [ 2 ],
          "attributes": {
            "src": "nested_hierarchy.v:3.11-3.14"
          }
        },
        "in1": {
          "hide_name": 0,
          "bits": [ 3 ],
          "attributes": {
            "src": "nested_hierarchy.v:4.11-4.14"
          }
        },
        "out0": {
          "hide_name": 0,
          "bits": [ 4 ],
          "attributes": {
            "src": "nested_hierarchy.v:5.12-5.16"
          }
        },
        "wire0": {
          "hide_name": 0,
          "bits": [ 5 ],
          "attributes": {
            "src": "nested_hierarchy.v:7.10-7.15"
          }
        }
      }
    }
  }
}