Add opt-in AutoCloneType for Records (backport #2781) (#2785)

* Add opt-in AutoCloneType for Records (#2781)

There is a new trait, chisel3.experimental.AutoCloneType that is mixed
in to Bundle and can optionally be mixed in to user-defined Records. The
compiler plugin prints a deprecation warning on any user-defined
implementation of cloneType, telling the user to mix in AutoCloneType
before upgrading to 3.6.

(cherry picked from commit a234fd48ac8f5942c38fef5797292014e407b586)

# Conflicts:
#	core/src/main/scala/chisel3/Aggregate.scala
#	plugin/src/main/scala/chisel3/internal/plugin/BundleComponent.scala

* Resolve backport conflicts

* Do not make MixedVec extend AutoCloneType

It is a binary incompatible change that can wait for 3.6.

* Waive MiMa false positives

Co-authored-by: Jack Koenig <koenig@sifive.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/build.sbt b/build.sbt
index 49643118..b958b19a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -143,6 +143,13 @@ lazy val plugin = (project in file("plugin")).
     }
   ).
   settings(
+    // Given that the plugin is 1) a compile-time only dependency and 2) package chisel3.internal,
+    // I'm not really sure why we both checking binary compatbility
+    mimaBinaryIssueFilters ++= Seq(
+      // MyTypingTransformer is private (https://github.com/lightbend/mima/issues/53)
+      ProblemFilters.exclude[DirectMissingMethodProblem]("chisel3.internal.plugin.BundleComponent#MyTypingTransformer.isBundle"),
+      ProblemFilters.exclude[DirectMissingMethodProblem]("chisel3.internal.plugin.BundleComponent#MyTypingTransformer.getConstructorAndParams")
+    ),
     mimaPreviousArtifacts := {
       // There are not yet artifacts for 2.12.17, 2.13.9, nor 2.13.10; suppress until 3.5.5 is released
       val skipVersions = Seq("2.12.17", "2.13.9", "2.13.10")