Contact emails...@chromium.org, thiba...@chromium.org

Explainer
https://github.com/WebAssembly/tail-call/blob/main/proposals/tail-call/Overview.md

Specificationhttps://github.com/WebAssembly/tail-call

Design docs
https://github.com/WebAssembly/tail-call/blob/master/proposals/tail-call/Overview.md

Summary

Add an explicit tail call and indirect tail call opcodes to WebAssembly.


Blink componentBlink>JavaScript>WebAssembly
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EJavaScript%3EWebAssembly>

Search tagswasm <https://chromestatus.com/features#tags:wasm>, webassembly
<https://chromestatus.com/features#tags:webassembly>, tail call
<https://chromestatus.com/features#tags:tail%20call>

TAG reviewNot required for non cross-cutting WebAssembly features.

TAG review statusNot applicable

Risks


Interoperability and Compatibility



*Gecko*: Positive

*WebKit*: Positive

*Web developers*: No signals

*Other signals*:

WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that
it has potentially high risk for Android WebView-based applications?



Debuggability

Yes, using DevTools.

Will this feature be supported on all six Blink platforms (Windows, Mac,
Linux, Chrome OS, Android, and Android WebView)?Yes

Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
?It is tested by WebAssembly spec tests

Flag nameV8: --experimental-wasm-return-call
Chrome: Features::kWebAssemblyTailCall

Requires code in //chrome?False

Tracking bughttps://bugs.chromium.org/p/v8/issues/detail?id=7431

Launch bughttps://launch.corp.google.com/launch/4232322

Estimated milestones

112

Anticipated spec changes

N/A

Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5423405012615168

This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.

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