WASM is a virtual processor spec. There's no GC support in X64 assembly nor ARM assembly and there's no GC support in Web Assembly because they are all assembly

WASM is a virtual processor spec. There's no GC support in X64 assembly nor ARM assembly and there's no GC support in Web Assembly because they are all assembly languages. You get a hunk of memory, you manage it however you want. If you want GC you you implement GC the same way the JVM implements GC on various processors.