Intent to Ship: WebAssembly multi-value
Thibaud Michaud
Contact emails
thib...@chromium.org, ecmzi...@chromium.org
Spec
WebAssembly multi-value spec repository:
https://github.com/WebAssembly/multi-value/
https://github.com/WebAssembly/spec/
The V8 feature launch process does not require a TAG review for small language features which do not affect other Web APIs.
Summary
The WebAssembly multi-value feature allows WebAssembly functions and blocks to consume and return an arbitrary number of values. JavaScript functions returning iterables can be imported as multi-value functions in WebAssembly, and multi-value WebAssembly functions can be exported as functions returning arrays to JavaScript.
Is this feature supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?
Yes.
Risks
Interoperability and Compatibility
The feature specification is finished and merged into the core WebAssembly spec. It is already enabled by default in Firefox and in WebKit.
Is this feature fully tested by web-platform-tests?
WPT are not required according to the V8 feature launch process, the V8 test suite already includes the WebAssembly spec tests and additional JavaScript tests.
Entry on the feature dashboard
https://chromestatus.com/features/5192420329259008
Thibaud Michaud
Contact emails
Spec
WebAssembly multi-value spec repository:
https://github.com/WebAssembly/multi-value/
Summary
The WebAssembly multi-value feature allows WebAssembly functions and blocks to consume and return an arbitrary number of values. They were previously limited to returning 0 or 1 value, and blocks were not allowed to consume values. JavaScript functions returning iterables can be imported as multi-value functions in WebAssembly, and multi-value WebAssembly functions can be exported as functions returning arrays to JavaScript.
Is this feature supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?
Yes.
Risks
Interoperability and Compatibility
The feature specification is finished and merged into the core WebAssembly spec. It is already enabled by default in Firefox and in WebKit.
Is this feature fully tested by web-platform-tests?
The feature is tested by the V8 test suite, which includes the WebAssembly spec tests and additional JavaScript tests.
Yoav Weiss
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Manuel Rego Casasnovas
On 19/06/2020 15:30, Yoav Weiss wrote:
> LGTM1 as this is catching up with Firefox and Safari.
>
> On Tue, Jun 16, 2020 at 5:54 PM 'Thibaud Michaud' via blink-dev
>
> Contact emails
>
> thib...@chromium.org <mailto:thib...@chromium.org>,
> ecmzi...@chromium.org <mailto:ecmzi...@chromium.org>
>
> Spec
>
> WebAssembly multi-value spec repository:
>
> https://github.com/WebAssembly/multi-value/
>
> Recently merged into the core WebAssembly spec repository:
>
> https://github.com/WebAssembly/spec/
>
>
> Summary
>
> The WebAssembly multi-value feature allows WebAssembly functions and
> blocks to consume and return an arbitrary number of values. They
> were previously limited to returning 0 or 1 value, and blocks were
> not allowed to consume values. JavaScript functions returning
> iterables can be imported as multi-value functions in WebAssembly,
> and multi-value WebAssembly functions can be exported as functions
> returning arrays to JavaScript.
>
>
> Is this feature supported on all six Blink platforms (Windows, Mac,
> Linux, Chrome OS, Android, and Android WebView)?
>
> Yes.
>
>
> Risks
>
> Interoperability and Compatibility
>
> The feature specification is finished
> default in Firefox
> <https://bugzilla.mozilla.org/show_bug.cgi?id=1628321> and in WebKit
> <https://bugs.webkit.org/show_bug.cgi?id=202250>.
>
> Is this feature fully tested by web-platform-tests
> The feature is tested by the V8 test suite, which includes the
> WebAssembly spec tests
> additional JavaScript tests
> <https://cs.chromium.org/chromium/src/v8/test/mjsunit/wasm/multi-value.js>.
>
>
> Entry on the feature dashboard <http://www.chromestatus.com/>
>
> https://chromestatus.com/features/5192420329259008
>
>
> *Requesting approval to ship?*
>
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Chris Harrelson
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