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] <javascript:>> 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. 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). 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.
