Move deprecated debug into compatibility

2 files changed, 10 insertions, 2 deletions

diff --git a/src/main/scala/chisel/compatibility.scala b/src/main/scala/chisel/compatibility.scala
index 54cf033d..56088562 100644
--- a/src/main/scala/chisel/compatibility.scala
+++ b/src/main/scala/chisel/compatibility.scala
@@ -8,7 +8,7 @@ package object Chisel {
   val INPUT = chisel.core.INPUT
   val OUTPUT = chisel.core.OUTPUT
   val NO_DIR = chisel.core.NO_DIR
-  val debug = chisel.core.debug
+
   type Flipped = chisel.core.Flipped
   type Data = chisel.core.Data
   val Wire = chisel.core.Wire
@@ -60,7 +60,7 @@ package object Chisel {
   val ImplicitConversions = chisel.util.ImplicitConversions
   val chiselMain = chisel.compatibility.chiselMain
   val throwException = chisel.compatibility.throwException
-
+  val debug = chisel.compatibility.debug
 
   object testers {
     type BasicTester = chisel.testers.BasicTester
diff --git a/src/main/scala/chisel/compatibility/debug.scala b/src/main/scala/chisel/compatibility/debug.scala
new file mode 100644
index 00000000..8850c76b
--- /dev/null
+++ b/src/main/scala/chisel/compatibility/debug.scala
@@ -0,0 +1,8 @@
+package chisel.compatibility
+
+import chisel.core._
+
+@deprecated("debug doesn't do anything in Chisel3 as no pruning happens in the frontend", "chisel3")
+object debug {  // scalastyle:ignore object.name
+  def apply (arg: Data): Data = arg
+}