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-rw-r--r--src/main/scala/firrtl/passes/VerilogModulusCleanup.scala6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/main/scala/firrtl/passes/VerilogModulusCleanup.scala b/src/main/scala/firrtl/passes/VerilogModulusCleanup.scala
index 6debaf93..36eff379 100644
--- a/src/main/scala/firrtl/passes/VerilogModulusCleanup.scala
+++ b/src/main/scala/firrtl/passes/VerilogModulusCleanup.scala
@@ -7,7 +7,7 @@ import firrtl.ir._
import firrtl.Mappers._
import firrtl.PrimOps.{Bits, Rem}
import firrtl.Utils._
-import firrtl.options.{Dependency, PreservesAll}
+import firrtl.options.Dependency
import scala.collection.mutable
@@ -24,7 +24,7 @@ import scala.collection.mutable
* This is technically incorrect firrtl, but allows the verilog emitter
* to emit correct verilog without needing to add temporary nodes
*/
-object VerilogModulusCleanup extends Pass with PreservesAll[Transform] {
+object VerilogModulusCleanup extends Pass {
override def prerequisites = firrtl.stage.Forms.LowFormMinimumOptimized ++
Seq( Dependency[firrtl.transforms.BlackBoxSourceHelper],
@@ -39,6 +39,8 @@ object VerilogModulusCleanup extends Pass with PreservesAll[Transform] {
override def optionalPrerequisiteOf = Seq.empty
+ override def invalidates(a: Transform) = false
+
private def onModule(m: Module): Module = {
val namespace = Namespace(m)
def onStmt(s: Statement): Statement = {