Remove unused blackbox modules in opt_clean.

diff --git a/passes/opt/opt_clean.cc b/passes/opt/opt_clean.cc
index 16d6add8e706e791dd5eab18df51543900901e18..3f1d83b9c7e9c8b468aa5b7ac8dd2202c5325da3 100644 (file)
--- a/passes/opt/opt_clean.cc
+++ b/passes/opt/opt_clean.cc
@@ -350,6 +350,11 @@ struct OptCleanPass : public Pass {
                ct.setup_stdcells();
                ct.setup_stdcells_mem();
 
+               for (auto module : design->modules()) {
+                       if (module->get_bool_attribute("\\blackbox"))
+                               ct.setup_module(module);
+               }
+
                ct_reg.setup_internals_mem();
                ct_reg.setup_stdcells_mem();
 
@@ -406,6 +411,11 @@ struct CleanPass : public Pass {
                ct.setup_stdcells();
                ct.setup_stdcells_mem();
 
+               for (auto module : design->modules()) {
+                       if (module->get_bool_attribute("\\blackbox"))
+                               ct.setup_module(module);
+               }
+
                ct_reg.setup_internals_mem();
                ct_reg.setup_stdcells_mem();