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Diffstat (limited to 'src')
| -rw-r--r-- | src/main/scala/firrtl/transforms/DeadCodeElimination.scala | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/main/scala/firrtl/transforms/DeadCodeElimination.scala b/src/main/scala/firrtl/transforms/DeadCodeElimination.scala index 8f9fad46..deb7299d 100644 --- a/src/main/scala/firrtl/transforms/DeadCodeElimination.scala +++ b/src/main/scala/firrtl/transforms/DeadCodeElimination.scala @@ -212,6 +212,11 @@ class DeadCodeElimination extends Transform with ResolvedAnnotationPaths with Re var emptyBody = true renames.setModule(mod.name) + def deleteIfNotEnabled(stmt: Statement, en: Expression): Statement = en match { + case UIntLiteral(v, _) if v == BigInt(0) => EmptyStmt + case _ => stmt + } + def onStmt(stmt: Statement): Statement = { val stmtx = stmt match { case inst: WDefInstance => @@ -230,6 +235,8 @@ class DeadCodeElimination extends Transform with ResolvedAnnotationPaths with Re EmptyStmt } else decl + case print: Print => deleteIfNotEnabled(print, print.en) + case stop: Stop => deleteIfNotEnabled(stop, stop.en) case con: Connect => val node = getDeps(con.loc) match { case Seq(elt) => elt } if (deadNodes.contains(node)) EmptyStmt else con |