Convert PreservesAll to explicit invalidates=false

Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/src/main/scala/firrtl/options/phases/ConvertLegacyAnnotations.scala b/src/main/scala/firrtl/options/phases/ConvertLegacyAnnotations.scala
index 1eb4c2d9..559b5d28 100644
--- a/src/main/scala/firrtl/options/phases/ConvertLegacyAnnotations.scala
+++ b/src/main/scala/firrtl/options/phases/ConvertLegacyAnnotations.scala
@@ -4,15 +4,17 @@ package firrtl.options.phases
 
 import firrtl.AnnotationSeq
 import firrtl.annotations.LegacyAnnotation
-import firrtl.options.{Dependency, Phase, PreservesAll}
+import firrtl.options.{Dependency, Phase}
 
 /** Convert any [[firrtl.annotations.LegacyAnnotation LegacyAnnotation]]s to non-legacy variants */
-class ConvertLegacyAnnotations extends Phase with PreservesAll[Phase] {
+class ConvertLegacyAnnotations extends Phase {
 
   override def prerequisites = Seq(Dependency[GetIncludes])
 
   override def optionalPrerequisiteOf = Seq.empty
 
+  override def invalidates(a: Phase) = false
+
   def transform(annotations: AnnotationSeq): AnnotationSeq = LegacyAnnotation.convertLegacyAnnos(annotations)
 
 }