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| -rw-r--r-- | src/main/scala/firrtl/options/Phase.scala | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/main/scala/firrtl/options/Phase.scala b/src/main/scala/firrtl/options/Phase.scala index e4bb6f0d..e5aa87ec 100644 --- a/src/main/scala/firrtl/options/Phase.scala +++ b/src/main/scala/firrtl/options/Phase.scala @@ -86,6 +86,15 @@ trait DependencyAPI[A <: DependencyAPI[A]] { this: TransformLike[_] => } +/** A trait indicating that no invalidations occur, i.e., all previous transforms are preserved + * @tparam A some [[TransformLike]] + */ +trait PreservesAll[A <: DependencyAPI[A]] { this: DependencyAPI[A] => + + override def invalidates(a: A): Boolean = false + +} + /** A mathematical transformation of an [[AnnotationSeq]]. * * A [[firrtl.options.Phase Phase]] forms one unit in the Chisel/FIRRTL Hardware Compiler Framework (HCF). The HCF is |