From 5183ef888274c1d9cc2e22aef95c0e90d86e5122 Mon Sep 17 00:00:00 2001
From: Jack Koenig
Date: Fri, 9 Jul 2021 14:29:45 -0700
Subject: Fix chisel3 <> for Bundles that contain compatibility Bundles (Take
 2) (#2031)

PR #2023 fixed a composition issue for chisel3 biconnects delegating to
FIRRTL partial connect when compatibility mode Bundles are elements of
chisel3 Bundles. It missed an important case though that caused
previously working code to break.

The bug is fixed by doing the automatic flipping for compatibility mode
Bundles that have "Input" as a direction in addition to those that are
"Flipped".---
 .../scala/chiselTests/CompatibilityInteroperabilitySpec.scala | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/test/scala/chiselTests/CompatibilityInteroperabilitySpec.scala b/src/test/scala/chiselTests/CompatibilityInteroperabilitySpec.scala
index 8e9f9e7e..28b8bc80 100644
--- a/src/test/scala/chiselTests/CompatibilityInteroperabilitySpec.scala
+++ b/src/test/scala/chiselTests/CompatibilityInteroperabilitySpec.scala
@@ -294,16 +294,21 @@ class CompatibiltyInteroperabilitySpec extends ChiselFlatSpec {
     compile {
       object Compat {
         import Chisel._
-        class Foo extends Bundle {
+        class BiDir extends Bundle {
           val a = Input(UInt(8.W))
           val b = Output(UInt(8.W))
         }
+        class Struct extends Bundle {
+          val a = UInt(8.W)
+        }
       }
       import chisel3._
       import Compat._
       class Bar extends Bundle {
-        val foo1 = new Foo
-        val foo2 = Flipped(new Foo)
+        val bidir1 = new BiDir
+        val bidir2 = Flipped(new BiDir)
+        val struct1 = Output(new Struct)
+        val struct2 = Input(new Struct)
       }
       // Check every connection both ways to see that chisel3 <>'s commutativity holds
       class Child extends RawModule {
-- 
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