Update reference types (#3084)

Align with the current state of the reference types proposal:
* Remove `nullref`
* Remove `externref` and `funcref` subtyping
* A `Literal` of a nullable reference type can now represent `null` (previously was type `nullref`)
* Update the tests and temporarily comment out those tests relying on subtyping

1 files changed, 5 insertions, 5 deletions

diff --git a/test/passes/dce_all-features.wast b/test/passes/dce_all-features.wast
index 77e781097..78324b941 100644
--- a/test/passes/dce_all-features.wast
+++ b/test/passes/dce_all-features.wast
@@ -779,7 +779,7 @@
 
   (func $throw
     (drop
-      (block $label$0 (result nullref)
+      (block $label$0 (result externref)
         (if
           (i32.clz
             (block $label$1 (result i32)
@@ -788,25 +788,25 @@
           )
           (nop)
         )
-        (ref.null)
+        (ref.null extern)
       )
     )
   )
 
   (func $rethrow
     (drop
-      (block $label$0 (result nullref)
+      (block $label$0 (result externref)
         (if
           (i32.clz
             (block $label$1 (result i32)
               (rethrow
-                (ref.null)
+                (ref.null exn)
               )
             )
           )
           (nop)
         )
-        (ref.null)
+        (ref.null extern)
       )
     )
   )