[NFC] Simplify rec group initialization in wasm-type.cpp (#5683)

Now that we no longer support constructing basic heap types in TypeBuilder, we
can fully initialize rec groups when they are created, rather than having to
initialize them later during the build step after any basic types have been
canonicalized. Alongside that change, also simplify the process of initializing
a type builder slot to avoid completely overwriting the HeapTypeInfo in the slot
and avoid the hacky workarounds that required.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/wasm-type.h b/src/wasm-type.h
index 551096fb5..65fdd5650 100644
--- a/src/wasm-type.h
+++ b/src/wasm-type.h
@@ -540,6 +540,7 @@ struct Struct {
 
   // Prevent accidental copies
   Struct& operator=(const Struct&) = delete;
+  Struct& operator=(Struct&&) = default;
 };
 
 struct Array {
@@ -550,6 +551,8 @@ struct Array {
   bool operator==(const Array& other) const { return element == other.element; }
   bool operator!=(const Array& other) const { return !(*this == other); }
   std::string toString() const;
+
+  Array& operator=(const Array& other) = default;
 };
 
 // TypeBuilder - allows for the construction of recursive types. Contains a