On Mon, Sep 16, 2019 at 12:41 PM <[email protected]> wrote: > Thanks for the responses. > > On Tuesday, 10 September 2019 11:12:36 UTC+1, Ross McIlroy wrote: >> >> To answer one of the questions here (inline): >> >>> [...] >>> 2) Are there plans to transition Play Store Chrome releases to 64-bit >>> for 64-bit Android? I did some searching but couldn't find any official >>> information about the reasons for sticking with 32-bit there (though I >>> assume memory usage, apk size, or both). >>> >> >> There is a plan to transition Play Store Chrome releases to 64-bit for >> some 64-bit Android devices (those over a certain memory threshold, yet to >> be determined). You are right that the reason for sticking with 32-bits is >> for memory reasons. We don't have a timeline for this yet, but it is >> unlikely to hit the stable channel until sometime early next year. >> > > Thanks for the information, good to know. > > Are there any public builds of an arm64-v8a android Chrome/Chromium for > testing purposes or will I have to self-build? I've found the CI logs but > can't see any download links for the build artefacts. > > On Wednesday, 11 September 2019 10:47:50 UTC+1, Clemens Hammacher wrote: >> >> On Tue, Sep 10, 2019 at 10:20 AM <[email protected]> wrote: >> >>> [...] >>> 3) Any hints on how I can get the SIMD version to run or is this likely >>> just a bug / spec instability between emcc and d8? >>> >> >> This indeed sounds like a bug, probably on the emscripten side. Can you >> open an emscripten bug >> <https://github.com/emscripten-core/emscripten/issues?q=is%3Aopen> about >> this? >> > > I opened an issue for this, see here: > https://github.com/emscripten-core/emscripten/issues/9439 > > A reply over there suggested v8 had recently implemented support for > non-immediate SIMD shifts which was required for my code. > > Using d8 from master I was able to run this on my MacBook Pro (x64). The > plain C implementation had a minimum time of 3.16ms, the uint64_t one was > 1.60ms and the SIMD one 0.64ms. Mac Chrome Canary could also run the code > and unsurprisingly reported similar timings. >
Wow, that's nice numbers! Good to hear that the issue was resolved by using latest versions. Sorry for that, but the SIMD spec still keeps evolving. > Chrome Canary for Android on Pixel 2 unfortunately just gets an "Aw, Snap" > page when trying to load the test (with simd enabled in chrome://flags). > Oh, that's unfortunate. Can you send a crash ID (from chrome://crashes)? If you have a local reproducer, it would also be really helpful to open a v8 bug <https://bugs.chromium.org/p/v8/issues/list>. > > Simon > >> -- > -- > v8-dev mailing list > [email protected] > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/1d5fa9c6-fc9c-443f-89f6-870a61c39dd6%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/1d5fa9c6-fc9c-443f-89f6-870a61c39dd6%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- Clemens Hammacher Software Engineer [email protected] Google Germany GmbH Erika-Mann-Straße 33 80636 München Geschäftsführer: Paul Manicle, Halimah DeLaine Prado Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Diese E-Mail ist vertraulich. Falls sie diese fälschlicherweise erhalten haben sollten, leiten Sie diese bitte nicht an jemand anderes weiter, löschen Sie alle Kopien und Anhänge davon und lassen Sie mich bitte wissen, dass die E-Mail an die falsche Person gesendet wurde. This e-mail is confidential. If you received this communication by mistake, please don't forward it to anyone else, please erase all copies and attachments, and please let me know that it has gone to the wrong person. -- -- v8-dev mailing list [email protected] http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-dev/CAGO%3DqhAFXEtXHx2Rw7MVw%3Dw2EOsE1__EFoGRNjh0Z7Y-JvOYFQ%40mail.gmail.com.
