Merge pull request #8678 from The-OpenROAD-Project-staging/dbsta-original-name

dbSta: save the original name of a module in "original_name" string prop

Author: maliberty

src/dbSta/src/dbReadVerilog.cc

@@ -6,6 +6,7 @@
 #include <odb/dbSet.h>
 
 #include <cstddef>
+#include <cstring>
 #include <fstream>
 #include <map>
 #include <memory>
@@ -368,9 +369,12 @@ void Verilog2db::makeDbModule(
   if (parent == nullptr) {
     module = block_->getTopModule();
   } else {
+    const char* name = network_->name(cell);
     // This uniquifies the cell
-    module = dbModule::makeUniqueDbModule(
-        network_->name(cell), network_->name(inst), block_);
+    module = dbModule::makeUniqueDbModule(name, network_->name(inst), block_);
+    if (strcmp(name, module->getName()) != 0) {
+      odb::dbStringProperty::create(module, "original_name", name);
+    }
 
     registerHierModule(module);
 

src/dbSta/test/read_verilog10.ok

@@ -9,3 +9,4 @@ b2/r1 snl_ffqx1
 b2/u1 snl_bufx1
 b2/u2 snl_bufx1
 Found filename prop src_file_0 on block
+block1_b2 block1

src/dbSta/test/read_verilog10.tcl

@@ -29,3 +29,9 @@ if { $found_prop != 0 } {
 } else {
   error "Didn't find filename prop on block"
 }
+foreach module [$block getModules] {
+  set prop [odb::dbStringProperty_find $module "original_name"]
+  if { $prop != "NULL" } {
+    puts "[$module getName] [$prop getValue]"
+  }
+}