diff options
Diffstat (limited to 'src/main')
| -rw-r--r-- | src/main/scala/firrtl/transforms/DeadCodeElimination.scala | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/main/scala/firrtl/transforms/DeadCodeElimination.scala b/src/main/scala/firrtl/transforms/DeadCodeElimination.scala index 8a3d0a4f..c98b892c 100644 --- a/src/main/scala/firrtl/transforms/DeadCodeElimination.scala +++ b/src/main/scala/firrtl/transforms/DeadCodeElimination.scala @@ -178,7 +178,8 @@ class DeadCodeElimination extends Transform { deadNodes: collection.Set[LogicNode], moduleMap: collection.Map[String, DefModule], renames: RenameMap, - topName: String) + topName: String, + doTouchExtMods: Set[String]) (mod: DefModule): Option[DefModule] = { // For log-level debug def deleteMsg(decl: IsDeclaration): String = { @@ -257,7 +258,7 @@ class DeadCodeElimination extends Transform { Some(Module(info, name, portsx, bodyx)) } case ext: ExtModule => - if (portsx.isEmpty) { + if (portsx.isEmpty && doTouchExtMods.contains(ext.name)) { logger.debug(deleteMsg(mod)) None } @@ -308,7 +309,7 @@ class DeadCodeElimination extends Transform { // current status of the modulesxMap is used to either delete instances or update their types val modulesxMap = mutable.HashMap.empty[String, DefModule] topoSortedModules.foreach { case mod => - deleteDeadCode(moduleDeps(mod.name), deadNodes, modulesxMap, renames, c.main)(mod) match { + deleteDeadCode(moduleDeps(mod.name), deadNodes, modulesxMap, renames, c.main, doTouchExtMods)(mod) match { case Some(m) => modulesxMap += m.name -> m case None => renames.delete(ModuleName(mod.name, CircuitName(c.main))) } |