1 files changed, 22 insertions, 0 deletions
diff --git a/src/main/scala/chisel3/util/experimental/decode/DecodeTableAnnotation.scala b/src/main/scala/chisel3/util/experimental/decode/DecodeTableAnnotation.scala
new file mode 100644
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--- /dev/null
+++ b/src/main/scala/chisel3/util/experimental/decode/DecodeTableAnnotation.scala
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+// SPDX-License-Identifier: Apache-2.0
+
+package chisel3.util.experimental.decode
+
+import firrtl.annotations.{Annotation, ReferenceTarget, SingleTargetAnnotation}
+
+/** DecodeTableAnnotation used to store a decode result for a specific [[TruthTable]].
+  * This is useful for saving large [[TruthTable]] during a elaboration time.
+  *
+  * @note user should manage the correctness of [[minimizedTable]].
+  *
+  * @param target output wire of a decoder.
+  * @param truthTable input [[TruthTable]] encoded in a serialized [[TruthTable]].
+  * @param minimizedTable minimized [[truthTable]] encoded in a serialized [[TruthTable]].
+  */
+case class DecodeTableAnnotation(
+  target:         ReferenceTarget,
+  truthTable:     String,
+  minimizedTable: String)
+    extends SingleTargetAnnotation[ReferenceTarget] {
+  override def duplicate(n: ReferenceTarget): Annotation = this.copy(target = n)
+}