[v8-dev] Branch cut V8 7.9

ller is running again and we are back to normal business. Cheers, Clemens -- Clemens Backes (né Hammacher) Software Engineer cleme...@google.com Google Germany GmbH Erika-Mann-Straße 33 80636 München Geschäftsführer: Paul Manicle, Halimah DeLaine Prado Registergericht und -nummer: Hamburg,

Re: [v8-dev] Re: Building with MSVC

ill be infrastructure work to do on our side. Cheers, Clemens > Best regards, > Dimitar > > On Monday, July 29, 2019 at 1:43:30 PM UTC+3, Clemens Backes wrote: >> >> Note: This is being tracked as https://crbug.com/v8/9555 now. I am just >> landing a fix for th

Re: [v8-dev] Sharing Memory between Host and WebAssembly Module

On Wed, Jan 15, 2020 at 5:05 PM Immanuel Haffner wrote: > Hi Clemens, > > Thanks for your answer. I already had that thought. But copying data is > just not an option. > > To make my scenario more concrete: > I habe data in main memory, easily tens or hundreds of gigabytes. Programs > fly in

Re: [v8-dev] Sharing Memory between Host and WebAssembly Module

advance. > Kind regards, > Immanuel > > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To unsubscribe

Re: [v8-dev] Sharing Memory between Host and WebAssembly Module

o view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/ea1acd82-6dda-4d56-b2c5-5e7ef0288583%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/ea1acd82-6dda-4d56-b2c5-5e7ef0288583%40googlegroups.com?utm_medium=email_source=footer> > . > --

Re: [v8-dev] Sharing Memory between Host and WebAssembly Module

msgid/v8-dev/f723d8b5-d126-4b00-82f0-5ab0176703e3%40googlegroups.com?utm_medium=email_source=footer> > . > -- Clemens Backes Software Engineer cleme...@google.com Google Germany GmbH Erika-Mann-Straße 33 80636 München Geschäftsführer: Paul Manicle, Halimah DeLaine Prado Registerg

Re: [v8-dev] Sharing Memory between Host and WebAssembly Module

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 v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/edc41

Re: [v8-dev] Re: WebAssembly: Performance issue with conditional branch on < 0 - 200x slowdown

b visit > https://groups.google.com/d/msgid/v8-dev/53ea45d3-0c46-4a02-8d72-6e0bb14cf9f4%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/53ea45d3-0c46-4a02-8d72-6e0bb14cf9f4%40googlegroups.com?utm_medium=email_source=footer> > . > -- Clemens Backes Software

Re: [v8-dev] Re: WebAssembly: Performance issue with conditional branch on < 0 - 200x slowdown

ups.google.com/d/msgid/v8-dev/231e4d57-9dfd-4dc4-b04e-bf29f01fc9c0%40googlegroups.com?utm_medium=email_source=footer> > . > -- Clemens Backes Software Engineer cleme...@google.com Google Germany GmbH Erika-Mann-Straße 33 80636 München Geschäftsführer: Paul Manicle, Halimah DeLaine Prado R

Re: [v8-dev] Re: WebAssembly: Performance issue with conditional branch on < 0 - 200x slowdown

ir disassembly > concurrently? -.- > > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To unsubscribe fr

Re: [v8-dev] Re: WebAssembly: Performance issue with conditional branch on < 0 - 200x slowdown

group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/8e47c702-9e0b-4937-a309-0aa19c3bb412%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/8e47c702-9e0b-493

Re: [v8-dev] WebAssembly: Converting conditional branches to predicated execution and loop unrolling

To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/2fc1ba6d-4064-48cb-beff-b82de78fcb85%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/2fc1ba6d-4064-48cb-beff-b82de78fcb85%40googlegroups.com?utm_medium=email_source=footer> > .

Re: [v8-dev] WebAssembly: Converting conditional branches to predicated execution and loop unrolling

this group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/449743d7-f969-4d65-a1ab-a8b3aaa4ba1f%40googlegroups.com > <https://groups.google.com/d/m

Re: [v8-dev] WebAssembly: Converting conditional branches to predicated execution and loop unrolling

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 v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/7b47cbac-f

Re: [v8-dev] Re: How to deserialise a WASM module with public V8 apis

treaming callback as an argument via a C++ API. > > On Tuesday, 5 January 2021 at 14:01:08 UTC+3 Clemens Backes wrote: > >> V8 used to have an API to directly create a Wasm module from serialized >> bytes. It was removed in https://crrev.com/c/2033171. We could bring it

Re: [v8-dev] Re: How to deserialise a WASM module with public V8 apis

on the web visit > https://groups.google.com/d/msgid/v8-dev/9c27c1ec-61c7-486c-abb5-138a2d7feac4n%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/9c27c1ec-61c7-486c-abb5-138a2d7feac4n%40googlegroups.com?utm_medium=email_source=footer> > . > -- Clemens Backes Softwa

Re: [v8-dev] How to add a new Register type on liftoff compiler ?

thread.so.0(+0x9609) [0x7f7cc3d00609] > /lib/x86_64-linux-gnu/libc.so.6(clone+0x43) [0x7f7cc3ab2103] > Received signal 4 ILL_ILLOPN 55ab26e0dcf1 > Illegal instruction (core dumped) > ``` > > > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > http://groups.google

Re: [v8-dev] Questions about Liftoff compiler and Wasm frames

it will help. > > Besides, I find that somtimes the high 32 bits of the value on arm64 is > not clean too, so it's just because mips64 needs a sign-extension operation > somewhere? > > Thanks, > Zhao Jiazhong > On Thursday, June 24, 2021 at 6:31:56 PM UTC+8 Clemens Backes wrote: > &g

Re: [v8-dev] Questions about Liftoff compiler and Wasm frames

re subscribed to the Google Groups > "v8-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/27de5d50-12c5

Re: [v8-dev] Root Relative Constant Table for WASM SIMD

w this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/CAAg-m6qF47m8fP81GoeeM4YJBaBAC8%2BY_z%3DcmanviBBeQTsD_A%40mail.gmail.com > <https://groups.google.com/d/msgid/v8-dev/CAAg-m6qF47m8fP81GoeeM4YJBaBAC8%2BY_z%3DcmanviBBeQTsD_A%40mail.gmail.com?utm_medium=email_source=

Re: [v8-dev] Root Relative Constant Table for WASM SIMD

be even better. >> >> I hope this helps at least a little bit, and that I'm not >> misunderstanding the whole idea (not familiar with SIMD). >> >> >> On Wed, Mar 17, 2021 at 5:16 PM Zhi An Ng wrote: >> >>> We did a little exploration on thi

[v8-dev] Design Doc: Fixing hashing in V8

/1xhUjeyZXjDoiqyx3o_EkHvGsB62fXE1jPrw-PlsNvvA/edit?usp=sharing=0-HIj4V0lfY9l3J6Yiey-f0A -- Clemens Backes Software Engineer cleme...@google.com Google Germany GmbH Erika-Mann-Straße 33 80636 München Geschäftsführer: Paul Manicle, Liana Sebastian Registergericht und -nummer: Hamburg, HRB 86891

Re: [v8-dev] How to make a libFuzzer fuzzer in V8

o unsubscribe from this group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/CACx9iAN2tPHm%2B-OgxLDp0_mpuVy2FpmvmCxj%3DU-8o%3DPLfhi28w%40mail.gmail.com > <https://gro

Re: [v8-dev] Wasm Tests Failed When Sandbox is 256GB

t; >>> 80636 München >>> >>> >>> Geschäftsführer: Paul Manicle, Liana Sebastian >>> >>> Registergericht und -nummer: Hamburg, HRB 86891 >>> >>> Sitz der Gesellschaft: Hamburg >>> >>> >>> Diese E-

Re: [v8-dev] Wasm Tests Failed When Sandbox is 256GB

to the wrong > person. > > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > 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 an

Re: [v8-dev] Guidance on internals of `v8::ArrayBuffer::Data()` method

oglegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/350ede0e-0c6d-433e-b9b3-a85525c7049fn%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/350ede0e-0c6d-433e-b9b3-a85525c7049fn%40googlegroups.com?utm_medium=email_source=f

Re: [v8-dev] Guidance on internals of `v8::ArrayBuffer::Data()` method

t; CL: https://groups.google.com/g/v8-dev/c/wuncGizO1EU > Unfortunately I'm not a dry-runner so I cannot start try-bots on this > myself. I'll try running some tests locally at least. > > -Aapo > > On Wednesday, 27 September 2023 at 14:15:23 UTC+3 Clemens Backes wrote: > >> This is the

Re: [v8-dev] Build failure on Mac

; > Thanks, > Meir > > > > > *Disclaimer* > > The information contained in this communication from the sender is > confidential. It is intended solely for use by the recipient and others > authorized to receive it. If you are not the recipient, you are hereby > notified that a

Re: [v8-dev] Is there any rule for NaN propagation in JSToWasmWrapper?

group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/902db3ea-d56a-4629-ab29-940a381ab872n%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/902db

Re: [v8-dev] A question about Word32PairShr on arm

from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/109ce47d-7964-4fc6-8c1e-b4d9da19dd0en%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/109ce47d-7964-4fc6-8c1e-b4d9da19d

[v8-dev] Design doc: Protecting V8 flags from manipulation after initialization

three releases though. -- Clemens Backes Software Engineer cleme...@google.com Google Germany GmbH Erika-Mann-Straße 33 80636 München Geschäftsführer: Paul Manicle, Liana Sebastian Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Diese E-Mail ist vertraulich

Re: [v8-dev] Remove the workaround for gcc bug.43949?

/msgid/v8-dev/043adcbf-501c-4aaf-afbd-8df419f2c7den%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/043adcbf-501c-4aaf-afbd-8df419f2c7den%40googlegroups.com?utm_medium=email_source=footer> > . > -- Clemens Backes Software Engineer cleme...@google.com Google Germany

Re: [v8-dev] mmap contention

person. > > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > 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 ema

Re: [v8-dev] Build error: static_assert failed due to requirement 'std::is_standard_layout::value'

seems to be ok both in g++ and clang++. (cc:thibaud@ for >that CL). > > I suppose we need a C++ language lawyer. :-) > If the verdict is negative, we could convert the std::unique_ptr to a raw > pointer and the vector to a linked list data structure. > > On Mon, Dec 19, 2022 at 6:

Re: [v8-dev] Build error: static_assert failed due to requirement 'std::is_standard_layout::value'

e_custom_libcxx=false clang_use_chrome_plugins=false target_cpu=\"x64\"" > > > > I have tried both my system Clang and Google's toolchain. The > compilation error is the same. My system clang is on 14.0.6. > > > > Git blame tells me @Clemens Backes is the auth

Re: [v8-dev] wasm compile fuzzer questions

o unsubscribe from this group and stop receiving emails from it, send >>> an email to v8-dev+un...@googlegroups.com. >>> >> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/v8-dev/CAELSTvcdk2Kng_R9u4qn-eyEtr4if66k0zwQYSJ9SxXVCaNbmg%40mail.gm

Re: [v8-dev] wasm compile fuzzer questions

instruction generating the requested type. Look for uses of `WasmGenerator::sequence`: https://source.chromium.org/chromium/chromium/src/+/refs/heads/main:v8/test/fuzzer/wasm-compile.cc;l=972;drc=e510fa298843c8ff43b538742e4fa16306da265f > On Wednesday, July 5, 2023 at 3:57:15 PM UTC+1 Clemens Ba

Re: [v8-dev] Failure when building on mac

This might fix it: https://crrev.com/c/5119542 On Wed, Dec 13, 2023 at 10:42 AM Clemens Backes wrote: > This is caused by https://crrev.com/c/5079350. > I see that you build with -std=c++20, but it seems like the standard > library you are using is not C++20-compatible. Do yo

Re: [v8-dev] Failure when building on mac

tion of the contents of this information is strictly prohibited and may > be unlawful. > > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups &

Re: [v8-dev] Re: Crash Issue Encountered in V8 Version 11.0.20.226 During Heap Snapshot

;>> v8_crdtp::detail::ValueMaybe, v8_crdtp::detail::ValueMaybe, >>>> v8_crdtp::detail::ValueMaybe) v8-heap-profiler-agent-impl.cc:298 >>>> v8_inspector::protocol::HeapProfiler::DomainDispatcherImpl::takeHeapSnapshot(v8_crdtp::Dispatchable >>>> const&) 0x00

[v8-dev] Implementation plan: Move Wasm instance data into trusted space

Most parts of the Wasm instance object will move to the trusted space, for performance and security (yes, both!). This document <https://docs.google.com/document/d/1yMLdhu6VyeFwWCYJaPj-B-aYsMFIzysFwswT5mDglM0/edit?usp=sharing> outlines how that will be done. -- Clemens Backes Software En

Re: [v8-dev] What's the difference between these two JS codes in V8?

The difference is that the first snippet is valid asm.js while the second snippet is not. d8 prints a message if you try to instantiate the second function (via `A()`): test.js:3: Invalid asm.js: Unexpected token asm.js code is internally converted to Wasm and

Re: [v8-dev] V8_PRESERVE_MOST increases code size on Windows

roup and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/3e5b967d-553e-40dd-ad7b-4a606d750f85n%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/3e5

Re: [v8-dev] What's the difference between these two JS codes in V8?

You need to invoke the function (to instantiate the asm.js module). Try this: function B() {"use asm"; function R() {}; return R}; B() On Wed, Nov 22, 2023 at 9:36 AM haochen shi wrote: > Thanks for the reply. > But I'm curious about how you got this error message 'test.js:3: Invalid > asm.js:

Re: [v8-dev] Failure when building main branch

roup. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/02724841-2ae7-40af-b7b5-9e6ba6258d99n%40googlegroups.com > <https://groups.google.com/d

Re: [v8-dev] Failure when building main branch

FYI, this was fixed via https://crrev.com/c/5423131. On Thu, Apr 4, 2024 at 10:45 AM Clemens Backes wrote: > This is pretty old code, but indeed the include is missing there. I don't > see a recent change that would explain the sudden compile failure, but > the right fix is anyway to

[v8-dev] Re: Branch cut V8 7.9

Merge-Requested-7.9 to the bug the CL is fixing. See https://v8.dev/docs/merge-patch for more information on merging. Thanks, Clemens On Thu, Oct 10, 2019 at 11:59 AM Clemens Backes wrote: > Hi, > > it is time again. If you have any questions regarding the release, please > ping this threa

Re: [v8-dev] Jobs API on its way

view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/CALoDvsboGKxjaYWfjcaEnu8U8XbRK_zi8auaTQ3y74-8L155%3Dg%40mail.gmail.com > <https://groups.google.com/d/msgid/v8-dev/CALoDvsboGKxjaYWfjcaEnu8U8XbRK_zi8auaTQ3y74-8L155%3Dg%40mail.gmail.com?utm_medium=email_sou

Re: [v8-dev] Re: WebAssembly: Performance issue with conditional branch on < 0 - 200x slowdown

ing the experiment in the latter has running time 11 ms. > > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To u

Re: [v8-dev] [ACTION REQUESTED] Are Any V8 Features Shipping in Chrome 85.

unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/2a162c4d-fdd5-460c-8722-0116529db68bn%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/2a162c4d-fdd5-460c-8722-0116529db68bn%40googlegroups.com?utm_me

Re: [v8-dev] Questions about Liftoff compiler and Wasm frames

ome, > both of them are release builds. > > Currently I can't run the benchmark with d8, so could the v8/tools/gdbinit > file be used in chrome? Or should I set more gn args? Thanks! > > Best regards, > Zhao Jiazhong > On Saturday, June 26, 2021 at 1:42:15 AM UTC+8 Clemens Backes wro

[v8-dev] Design doc: Compress safepoint tables (not only for Wasm)

TL;DR: 25-30% of code produced for current apps are safepoint information; I propose to reduce this number. https://docs.google.com/document/d/14Du2KDeQj0qxt1Zx5TvvB_eccXmeGu0xls82Hk3yIAg/edit?usp=sharing -- Clemens Backes Software Engineer cleme...@google.com Google Germany GmbH Erika-Mann

[v8-dev] Inspectable Liftoff

I've shared an item with you: Inspectable Liftoff https://docs.google.com/document/d/1tUICYei8mvqkbRjtGQWAa9F1B8wFhDwS3sZ-bmIc7ik/edit?usp=sharing=5dd2ae9b It's not an attachment -- it's stored online. To open this item, just click the link above. PTAL at this design doc to make Liftoff

[v8-dev] Shipping Liftoff on Mobile

I've shared an item with you: Shipping Liftoff on Mobile https://docs.google.com/document/d/1jbTO45WyarPJOGC45nnp31iCdxiPe5qRjVCSXUYJPHM/edit?usp=sharing=5dfcbc7b It's not an attachment -- it's stored online. To open this item, just click the link above. PTAL at our plan to ship Liftoff on

[v8-dev] Dynamically check embedder features

I've shared an item with you: Dynamically check embedder features https://docs.google.com/document/d/1S-Y5oCelM7vTThRtnrEJFBo_cq0hc0kID3MfeMu_KCg/edit?usp=sharing=5e298e05 It's not an attachment -- it's stored online. To open this item, just click the link above. PTAL at this little design

[v8-dev] Using Liftoff for debugging WebAssembly - Invitation to comment

I've shared an item with you: Using Liftoff for debugging WebAssembly https://docs.google.com/document/d/1fCzqgqpH-PZdSOAMCBO_J6Dww1O21_ru9xvAS2TTczs/edit?usp=sharing=CKnG2-UF=5e15f2b9 It's not an attachment -- it's stored online. To open this item, just click the link above. We already

[v8-dev] Multi-threaded debugging in Liftoff - Invitation to comment

I've shared an item with you: Multi-threaded debugging in Liftoff https://docs.google.com/document/d/1WmWKYDjcr3UyaibdWd0yWM8YqBvXtcjhqNLuGxl5Ib8/edit?usp=sharing=CImO56AF=5eb559f9 It's not an attachment -- it's stored online. To open this item, just click the link above. One pager about

[v8-dev] Document shared with you: "Enable WebAssembly trap handling in the arm64 simulator"

I've shared an item with you: Enable WebAssembly trap handling in the arm64 simulator https://docs.google.com/document/d/1txYcJ8YcnuRjwy5wZcHkCkS5wYFRgrYyzaw3udJX5tE/edit?usp=sharing=60def214 It's not an attachment -- it's stored online. To open this item, just click the link above. -- --

[v8-dev] Document shared with you: "More aggressive code caching for Wasm"

I've shared an item with you: More aggressive code caching for Wasm https://docs.google.com/document/d/1yvGFWehHf6rqryINDPQ0DWbf5k1HA0nSvc7snN-RG4k/edit?usp=sharing=654bb4d6 It's not an attachment -- it's stored online. To open this item, just click the link above. I wrote a little design