Contact emailsgdee...@chromium.org, z...@chromium.org, thiba...@chromium.org
Explainer https://github.com/WebAssembly/relaxed-simd/blob/main/proposals/relaxed-simd/Overview.md Specificationhttps://github.com/WebAssembly/relaxed-simd/tree/main/document Summary Relaxed SIMD extends the existing SIMD proposal to introduce vector instructions that relax the strict determinism constraints of portable SIMD to take better advantage of the underlying hardware. The operations introduced in this proposal take advantage of widely available instruction sets to accelerate compute workloads. Blink componentBlink>JavaScript>WebAssembly <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EJavaScript%3EWebAssembly> TAG reviewNot required as per: https://v8.dev/docs/feature-launch-process. This introduces an additional set of vector operations to WebAssembly, and makes no API changes. Risks Interoperability and Compatibility *Gecko*: In development, enabled in nightly *WebKit*: Neutral as per issue comment <https://github.com/WebKit/standards-positions/issues/4#issuecomment-1170364495> *Web developers*: Strongly positive, Proposal in Phase 3 in the WebAssembly CG the proposal was incubated to address some of the developer/user requests from the previous SIMD proposal. *Other signals*: Proposal voted to a provisional phase 4 as per meeting notes in the February 14th CG meeting (notes: https://github.com/WebAssembly/meetings/blob/main/main/2023/CG-02-14.md). The feature has consensus in the CG, but the vote is provisional till the formal spec is up to date (Tracking issue: https://github.com/WebAssembly/relaxed-simd/issues/134, PRs also in flight). 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? No Debuggability Supported instructions are enabled in Liftoff, and are visible to DevTools for debuggability. 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> ?Not applicable, tested by WebAssembly spec tests Flag nameV8: --wasm-relaxed-simdChrome: Features::kWebAssemblyRelaxedSimd Requires code in //chrome?False Tracking bughttps://bugs.chromium.org/p/v8/issues/detail?id=12284 Estimated milestones 114 Anticipated spec changes No anticipated spec changes, but some potential for compat issues based on hardware, more details in this Entropy.md <https://github.com/WebAssembly/relaxed-simd/blob/main/proposals/relaxed-simd/Entropy.md>, and the linked issues. Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5082417973952512 -- 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 on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CALi9WK8u8UxgQemmHvod6FMDc82ZS%2B9boNB-Y-kxw2JTpuL_sA%40mail.gmail.com.
