From d35248c8efc8c7afb1b99ddea631be5e6537d46d Mon Sep 17 00:00:00 2001
From: Kevin Laeufer
Date: Fri, 21 May 2021 12:58:02 -0700
Subject: Annotation: override getTargets for SingleTargetAnnotation (#2241)

---
 src/main/scala/firrtl/annotations/Annotation.scala | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/scala/firrtl/annotations/Annotation.scala b/src/main/scala/firrtl/annotations/Annotation.scala
index b5c9c7e0..8722c4fa 100644
--- a/src/main/scala/firrtl/annotations/Annotation.scala
+++ b/src/main/scala/firrtl/annotations/Annotation.scala
@@ -48,6 +48,9 @@ trait NoTargetAnnotation extends Annotation {
 trait SingleTargetAnnotation[T <: Named] extends Annotation {
   val target: T
 
+  // we can implement getTargets more efficiently since we know that we have exactly one target
+  override def getTargets: Seq[Target] = Seq(target)
+
   /** Create another instance of this Annotation */
   def duplicate(n: T): Annotation
 
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