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Why not just Some Language -> C -> CCC -> executable? What is WASM bringing to the table?

Or better yet Some Language -> MLIR.

Very few languages have "Some Language -> C" or "Some Language -> non-common OS / arch combo". The "just" part is a whole new backend, which is a massive amount of work for common languages.

But it turns out many languages do have "Some Language -> WASM" now. WebAssembly brings portability to the table.

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