[Webkit-unassigned] [Bug 247399] New: [Wasm-GC] Implement cast operations

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=247399

            Bug ID: 247399
           Summary: [Wasm-GC] Implement cast operations
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebAssembly
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: asumu at igalia.com

The Wasm GC proposal has several cast operations that need to be implemented: https://github.com/WebAssembly/gc/blob/main/proposals/gc/MVP.md#casts

Of these, `ref.test` and `ref.cast` in particular require us to add more type information to representations of datatypes such as functions, structs, and arrays to enable casting to concrete types.

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