Remove legacy WasmGC instructions (#5861)

Remove old, experimental instructions and type encodings that will not be
shipped as part of WasmGC. Updating the encodings and text format to match the
final spec is left as future work.

1 files changed, 0 insertions, 3 deletions

diff --git a/src/passes/RemoveUnusedBrs.cpp b/src/passes/RemoveUnusedBrs.cpp
index 197126f5e..dc7741c0e 100644
--- a/src/passes/RemoveUnusedBrs.cpp
+++ b/src/passes/RemoveUnusedBrs.cpp
@@ -714,9 +714,6 @@ struct RemoveUnusedBrs : public WalkerPass<PostWalker<RemoveUnusedBrs>> {
 
         // First, check for a possible null which would prevent optimizations on
         // null checks.
-        // TODO: Look into using BrOnNonNull here, to replace a br_on_func whose
-        // input is (ref null func) with br_on_non_null (as only the null check
-        // would be needed).
         // TODO: Use the fallthrough to determine in more cases that we
         // definitely have a null.
         auto refType = curr->ref->type;