Is it worth adding suspend.all?

[oovm]

Can we add a command that corresponds to yield*/yield from semantics, that is, get all values ​​from a generator (cont).

This command can be simulated with multiple instructions

(suspend.all $k)

(loop $relay
    (suspend $yield (local.get $k))
    (br $relay)
)

[tlively]

This instruction would probably be too high-level for WebAssembly. Different producers would want different behavior. For example, should the yielded values be stored in a memory? in a table? in an array? dropped? It's better to provide the low-level building blocks and let producers implement exactly what they need rather than trying to provide such high-level operations directly.

[fgmccabe]

Following on from Thomas's remarks: definitely too high-level and language specific.
Note that a source language wanting to support such patterns has a better alternative: 'labeled' yields.

[oovm]

What are 'labeled' yields, is it a pattern or a directive

[fgmccabe]

It's a pattern. The idea is that yield has an additional (potentially implicit) argument: the identity of the generator coroutine that is yielding.