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<h3 id='___replace_sub_module_svf'>replace_sub_module_svf</h3>
<pre>Replace sub-module SVF in the design by a new re-synthesized sub-module SVF file content
<b>Usage:</b> replace_sub_module_svf($new_top_design_svf);
$new_top_design_svf: The replaced and new top level full SVF file to be written out

<b>Examples:</b>

#1. Replace sub-module 'mem_controller', 'ahb_arb' hierarchically in netlist and SVF, replace 'mem_ahb_top' module only,
    and write out to a new full SVF file and a new netlist

read_library("tsmc.lib");
read_svf("-imp", "top_ref.svf");
read_design("-imp", "top_ref.gv");
read_sub_module_svf("new_mem_controller.svf", "-module", "mem_controller");
read_sub_module_svf("new_ahb_arb.svf", "-module", "ahb_arb");
read_sub_module_netlist("new_mem_controller.gv", "-module", "mem_controller");
read_sub_module_netlist("new_ahb_arb.gv", "-module", "ahb_arb");
read_sub_module_netlist("new_mem_ahb_top.v", "-module", "mem_ahb_top", "-sub_only"); # This module is parent module with instantiation only

replace_sub_module_netlist("new_top_ref.gv"); # Run netlist replacement first 
replace_sub_module_svf("new_top_ref.svf");    # Then SVF replacement

</pre>