Merge branch 'master' into 3.5-release

1 files changed, 7 insertions, 2 deletions

diff --git a/src/main/scala/chisel3/compatibility.scala b/src/main/scala/chisel3/compatibility.scala
index dde2321d..ccb4ec1f 100644
--- a/src/main/scala/chisel3/compatibility.scala
+++ b/src/main/scala/chisel3/compatibility.scala
@@ -33,7 +33,10 @@ package object Chisel {
   implicit class AddDirectionToData[T<:Data](target: T) {
     def asInput: T = Input(target)
     def asOutput: T = Output(target)
-    def flip(): T = Flipped(target)
+    def flip: T = Flipped(target)
+
+    @deprecated("Calling this function with an empty argument list is invalid in Scala 3. Use the form without parentheses instead", "Chisel 3.5")
+    def flip(dummy: Int*): T = flip
   }
 
   implicit class AddDirMethodToData[T<:Data](target: T) {
@@ -362,7 +365,8 @@ package object Chisel {
   implicit class fromBooleanToLiteral(x: Boolean) extends chisel3.fromBooleanToLiteral(x)
   implicit class fromIntToWidth(x: Int) extends chisel3.fromIntToWidth(x)
 
-  type BackendCompilationUtilities = firrtl.util.BackendCompilationUtilities
+  @deprecated("Use object firrtl.util.BackendCompilationUtilities instead", "Chisel 3.5")
+  type BackendCompilationUtilities = chisel3.BackendCompilationUtilities
   val ImplicitConversions = chisel3.util.ImplicitConversions
 
   // Deprecated as of Chisel3
@@ -634,6 +638,7 @@ package object Chisel {
 
     final def toUInt(implicit compileOptions: CompileOptions): UInt = a.do_asUInt(DeprecatedSourceInfo, compileOptions)
 
+    final def toBools(implicit compileOptions: CompileOptions): Seq[Bool] = a.do_asBools(DeprecatedSourceInfo, compileOptions)
   }
 
 }