On Tue, Mar 25, 2025 at 9:49 PM Emanuel Ziegler <ecmzieg...@chromium.org> wrote:
> Hi all, > > We are preparing to ship the WebAssembly Branch Hints proposal in M136 > which has been voted to phase 4 in the Wasm Community Group last July. > Chrome is now catching up with shipping it after requests from partners. > The feature is already implemented in Firefox. > > The proposal was championed by Yuri Iozzelli from Leaning Technologies > and the V8 team was not involved in its standardization process. The > implementation has no effect on existing code by design which is why a > Finch trial would not yield any insights. We have a Chromium feature > available for a Finch kill-switch if necessary. > > Thank you, > Emanuel > > > Contact emailsecmzieg...@chromium.org, jkumme...@chromium.org > > ExplainerNone > > Specification > https://github.com/WebAssembly/branch-hinting/blob/main/proposals/branch-hinting/Overview.md > It seems like you put the explainer in the specification field, and didn't link to the specification. I guess the spec is at https://github.com/WebAssembly/branch-hinting/blob/main/document/core/appendix/custom.rst ? Although I'm not sure the rendering there is quite right... is there a better URL? > > > Summary > > Improves the performance of compiled WebAssembly code by informing the > engine that a particular branch instruction is very likely to take a > specific path. This allows the engine to make better decisions for code > layout (improving instruction cache hits) and register allocation. > https://github.com/WebAssembly/branch-hinting/blob/main/proposals/branch-hinting/Overview.md > > > Blink componentBlink>JavaScript>WebAssembly > <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EJavaScript%3EWebAssembly%22> > > TAG reviewNone > > TAG review statusNot applicable > > > Risks > > > Interoperability and Compatibility > > None > Can you expand on why you believe there are no interop and compat risks? > > > *Gecko*: No signal > > *WebKit*: No signal > > *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? > > None > > > Debuggability > > None > > > Will this feature be supported on all six Blink platforms (Windows, Mac, > Linux, ChromeOS, Android, and Android WebView)?No > Why not? > > > Is this feature fully tested by web-platform-tests > <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> > ?No > Why not? > > > > Flag name on about://flagsNone > > Finch feature nameV8Flag_experimental_wasm_branch_hinting > > Requires code in //chrome?False > > Estimated milestones > Shipping on desktop 136 > Shipping on Android 136 > Shipping on WebView 136 > > Anticipated spec changes > > Open questions about a feature may be a source of future web compat or > interop issues. Please list open issues (e.g. links to known github issues > in the project for the feature specification) whose resolution may > introduce web compat/interop risk (e.g., changing to naming or structure of > the API in a non-backward-compatible way). > None > > Link to entry on the Chrome Platform Status > https://chromestatus.com/feature/5165273114738688?gate=5186994509185024 > > This intent message was generated by Chrome Platform Status > <https://chromestatus.com/>. > > -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to blink-dev+unsubscr...@chromium.org. > To view this discussion visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAPAU7RwMXE%2BnsewWqSQ0M%2BS7gH600KjJtnp2T3Oyw8GPz4nNHg%40mail.gmail.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAPAU7RwMXE%2BnsewWqSQ0M%2BS7gH600KjJtnp2T3Oyw8GPz4nNHg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAM0wra8O7MUWk7DTJ%3DQyK7fych-iRsFbOXcUp95J2JqO3dyRFQ%40mail.gmail.com.
