Merge pull request #8465 from The-OpenROAD-Project-staging/secure-fix-modinst-swapMaster

Do not remove the dangling dbModNet connected to a dbBTerm.

Author: maliberty

src/odb/src/db/dbModInst.cpp

@@ -664,7 +664,8 @@ dbModInst* dbModInst::swapMaster(dbModule* new_module)
   // Remove any dangling nets
   std::vector<dbNet*> nets_to_delete;
   for (dbNet* net : parent->getOwner()->getNets()) {
-    if (net->getITerms().empty()) {
+    if (net->getITerms().empty() && net->getBTerms().empty()
+        && !net->isSpecial()) {
       nets_to_delete.emplace_back(net);
     }
   }

src/rsz/test/jpeg.v

@@ -16618,7 +16618,7 @@ endmodule
 (* top =  1  *)
 (* dynports =  1  *)
 (* hdlname = "jpeg_encoder" *)
-module jpeg_encoder(clk, ena, rst, dstrb, din, qnt_val, qnt_cnt, size, rlen, amp, douten);
+module jpeg_encoder(clk, ena, rst, unused, dstrb, din, qnt_val, qnt_cnt, size, rlen, amp, douten);
   (* force_downto = 32'b00000000000000000000000000000001 *)
   (* src = "./platforms/gf180/cells_adders.v:6.28-6.29" *)
   wire _00000_;
@@ -36386,6 +36386,8 @@ module jpeg_encoder(clk, ena, rst, dstrb, din, qnt_val, qnt_cnt, size, rlen, amp
   (* src = "/home/cmoon/ORFS/OpenROAD-flow-scripts/flow/designs/src/jpeg/jpeg_encoder.v:134.8-134.11" *)
   input clk;
   wire clk;
+  input unused;
+  wire unused;
   (* src = "/home/cmoon/ORFS/OpenROAD-flow-scripts/flow/designs/src/jpeg/jpeg_encoder.v:205.14-205.25" *)
   wire dc_diff_doe;
   (* src = "/home/cmoon/ORFS/OpenROAD-flow-scripts/flow/designs/src/jpeg/jpeg_encoder.v:139.23-139.26" *)

src/rsz/test/replace_arith_modules1.tcl

@@ -51,3 +51,6 @@ replace_arith_modules -path_count 100
 
 report_wns
 report_tns
+
+set write_sdc_file [make_result_file replace_arith_modules1.sdc]
+write_sdc $write_sdc_file