Port commit 8559a04f

Change-Id: Ibeafd18e3bed0907536b93d1fd4c5db98bef41ba
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3746292
Commit-Queue: ji qiu <qiuji@iscas.ac.cn>
Auto-Submit: Yahan Lu <yahan@iscas.ac.cn>
Reviewed-by: ji qiu <qiuji@iscas.ac.cn>
Cr-Commit-Position: refs/heads/main@{#81544}

Changes for TF instruction selector will be pasted
in the CL comments and will get applied once all
relaxed opcodes have been implemented in codegen/liftoff.

Change-Id: I61f393b4df7d6b2dbe14632e71b3f317379b4ae6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743507
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Reviewed-by: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/main@{#81543}

Bug: v8:13038
Change-Id: I98832b00523535b57cde67d4d389aa361bc19a46
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3745405Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81542}

Minor bug fix in alias support (crrev.com/c/3723506), which broke
modes with suffixes, e.g. x64.release-css or x64.rel-css

No-Try: True
Change-Id: I16fdc83dde269f66f4bb7260de0d2649aaece27e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3732929
Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81541}

GCInfoTable is a process-global table storing Oilpan type information.
Table operations may fail in OOM scenarios which were previously just
caught in regular CHECKs. Change to use a global OOM handler that is set
up to use V8's handler.

Bug: chromium:1283199
Change-Id: Id33263ef7cd4028d60a071f5ab3b165e59ac9593
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3745368Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81540}

This is a reland of commit 2d74bfa4

Difference compared to original: Restore one needed include.

Original change's description:
> Remove some unused includes
>
> Mostly src/api, src/asmjs. src/ast, src/base, src/wasm.
>
> Bug: v8:13006
> Change-Id: If4e85afe003fda9f8a681077827c3502e939fe57
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3742702
> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81523}

Bug: v8:13006
Change-Id: I88c45059572fa25af4e0999f479ba5c28572db7f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3746077Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81539}

Load current Memory start/size off of the wasm instance when entering
fast calls, so they can use that info for whatever they need to do.
Fast calls from JS set the memory to null, and the memory does not
need to be piped from wasm to slow callbacks as wasm always calls
the fast function.

Change-Id: Ibfa33cdd7dba85300f95cbdacc9a56b3f7181663
Bug: chromium:1052746
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3719005Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: snek <snek@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81538}

Atomics.load, Atomics.store, and Atomics.exchange now accept shared
array objects as their 1st argument.

Currently these are implemented in C++ and not yet in CSA.

Bug: v8:12547
Change-Id: I54ed8816a696a4f45dda964739b1cfd917d39dc0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3723974Reviewed-by: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Luis Fernando Pardo Sixtos <lpardosixtos@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#81537}

To make an array from a string, we were passing an interior pointer to
the array's contents to NewStringFromUtf8 -- but the allocation could
cause that interior pointer to become invalid.

As part of the fix, also start to refactor to put the notion of UTF-8
variants closer to unibrow.  This will allow us to unify more
UTF-8/WTF-8/sloppy UTF-8 code paths.

Bug: v8:12868, v8:13028, v8:13036
Change-Id: I61f53a6882b5ebe1d0b38594412cb35ff0e28a94
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3742701
Commit-Queue: Andy Wingo <wingo@igalia.com>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81536}

Port 84e078c6

Original Commit Message:

    This CL implements checks in case EnforceRange is requested for a
    given parameter by using TryTruncate* operators. It implements 2 such
    truncations on x64 and arm64 - TryTruncateFloat64ToInt32 and
    TryTruncateFloat64ToUint32.

R=mslekova@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: Iaf6834b9cfe3d43298adfe2c71ec3d55aa14f935
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743467Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#81535}

... objects/intl-unittest.

Bug: v8:12781
Change-Id: I225054f5d0071f28d5b4d1efe8698ce5d0276c0c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3725448Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: 王澳 <wangao.james@bytedance.com>
Cr-Commit-Position: refs/heads/main@{#81534}

Unused as of this CL; users will follow.

Bug: v8:12917
Change-Id: I82658ea8a401834a5b3661068766bbdfec54d5a4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3726214Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81533}

Change-Id: I3ae32354c592e4a605f1d0c34f4dd3d9cad16795
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3745404
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81532}

... utils/identity-map-unittest.

Bug: v8:12781
Change-Id: I875de2b1e589ec72d724a6d0745a5d615344b510
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3724792Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: 王澳 <wangao.james@bytedance.com>
Cr-Commit-Position: refs/heads/main@{#81531}

Bug: chromium:1309467,chromium:1308360,v8:9237
Change-Id: I77b004e263a9bed98a0dfe5936bdad055bde36a6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3745365Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81530}

This is a reland of commit 84e078c6. It fixes an undefined behaviour and guards against NaNs in d8-test.cc.

Original change's description:
> [fastcall] Support EnforceRange annotation
>
> This CL implements checks in case EnforceRange is requested for a
> given parameter by using TryTruncate* operators. It implements 2 such
> truncations on x64 and arm64 - TryTruncateFloat64ToInt32 and
> TryTruncateFloat64ToUint32.
>
> Bug: chromium:1052746
> Change-Id: I32f34d9dc1265af568cc576663620a8f7f8245f6
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3721618
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Commit-Queue: Maya Lekova <mslekova@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81512}

Bug: chromium:1052746, chromium:1341851, chromium:1341891
Change-Id: I21e0e452c92cc93f8b06985a335f409855be0546
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743518Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81529}

Change-Id: Id10cfdb8f3a380eb1cd39be569e152b3ebe41b44
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735166Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/main@{#81528}

Fixed: chromium:1341180
Change-Id: Ib475310b18c31e5e3e0fc5e52dab736ebb6ac55a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3738745Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81527}

This reverts commit 2d74bfa4.

Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Mac%20-%20arm64%20-%20debug%20builder/7403/overview

Original change's description:
> Remove some unused includes
>
> Mostly src/api, src/asmjs. src/ast, src/base, src/wasm.
>
> Bug: v8:13006
> Change-Id: If4e85afe003fda9f8a681077827c3502e939fe57
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3742702
> Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81523}

Bug: v8:13006
Change-Id: I7579dc3805ed4cbcd56488c31450c7941b430b1a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3746076
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81526}

Smi handler in LoadIC is decoded to IntPtrT and result in
sign-extending Smi's value when pointer compression is enabled. This
CL avoid this sign-extension by decoding the Smi to Int32T.

Change-Id: I3ddd6dcec8654d6c13d472a077a55698359d126a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3740481
Commit-Queue: Hao A Xu <hao.a.xu@intel.com>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81525}

Extract AllocationCounter (which manages the allocation observers) out
of Space and pass it on initialization.
AllocationCounter will instead be a field of the subclasses (e.g.
PagedSpace, NewSpace).
This will allow to reuse the same AllocationCounter for the NewSpace and
PagedSpaceBase parts of PagedNewSpace (crrev.com/c/3641178).

Bug: v8:12612
Change-Id: Ie6ed10d1b138a5724cf9b469ab9c943518850ad4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3745403
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81524}

Mostly src/api, src/asmjs. src/ast, src/base, src/wasm.

Bug: v8:13006
Change-Id: If4e85afe003fda9f8a681077827c3502e939fe57
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3742702Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81523}

Prints information about sections in a given module and their sizes.

Change-Id: I3bf02f0c8be53756364db4d2dada60bc8a510815
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743447Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81522}

Bug: v8:12946
Change-Id: If62b67a47f63832e6edca749ce1a45cf3a85316d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743384
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81521}

Bug: v8:13033
Change-Id: Ic2c13359a1e22846750d67342b2a682f6351b7da
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743484Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81520}

This CL fixes a performance regression by conditionally compiling an
expensive instance check only in debug mode.

Bug: chromium:1329463
Change-Id: I2cceb7c06fa6db967923047a4dee63a93a0b72a2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743385
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Auto-Submit: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81519}

Additional change: Allow regular expressions in assertTraps.

Bug: v8:7748
Change-Id: I3bf99faec3d4f25fcf3caa4ed310f02f03196d4d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743483Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81518}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/9782ba0..9ea9d49

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com

Change-Id: I2b02543e83818d2155d9d9ccf2e234e0511f917c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743513
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
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Cr-Commit-Position: refs/heads/main@{#81517}

This reverts commit 111d20bb.

Reason for revert:
- crashes
- flaky test failures
- ubsan errors
- Speedometer regression

Original change's description:
> Reland "cppgc: Enable pointer compression by default on Desktop"
>
> Reland since ubsan failures were fixed.
>
> Original change's description:
> > Revert "cppgc: Enable pointer compression by default on Desktop"
> >
> > This reverts commit 4cf08c1a.
> >
> > Reason for revert: broke ubsan.
> >
> > Original change's description:
> > > cppgc: Enable pointer compression by default on Desktop
> > >
> > > The CL enables pointer compression in Oilpan.
> > >
> > > For sherrifs: the CL may cause some slight perf regressions (likely
> > > blink_perf.*), due to slightly higher cost of compression and
> > > decomrpession.
> > >
> > > Speedometer2 is not expected to regress, as was checked locally. Such a
> > > slight performance degradation is compensated by memory savings that are
> > > expected to be around 10-20% of Oilpan committed size (~2.5-5% of Renderer
> > > PMF).
> > >
> > > Bug: chromium:1325007
> > > Change-Id: I2e31fc56250dbe6354a7614fa1f9e926260d842b
> > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3695565
> > > Commit-Queue: Anton Bikineev <bikineev@chromium.org>
> > > Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> > > Cr-Commit-Position: refs/heads/main@{#81442}
> >
> > Bug: chromium:1325007
> > Change-Id: Iabc31ed683841ba0189dee9028da330dc03d7e09
> > No-Presubmit: true
> > No-Tree-Checks: true
> > No-Try: true
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735168
> > Auto-Submit: Anton Bikineev <bikineev@chromium.org>
> > Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> > Commit-Queue: Anton Bikineev <bikineev@chromium.org>
> > Cr-Commit-Position: refs/heads/main@{#81443}
>
> Bug: chromium:1325007
> Change-Id: Ifc8ea0e73e99d9be622e27d3d4c79d0e35fd459c
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735128
> Commit-Queue: Anton Bikineev <bikineev@chromium.org>
> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Cr-Commit-Position: refs/heads/main@{#81486}

Bug: chromium:1325007
Change-Id: I35d9085b9c39fd212002f098a3a015d0db7504a0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743468
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81516}

Initial feature: list functions in a module, as follows:

$ gm x64.release wami
$ out/x64.release/wami --list-functions my_module.wasm

More to come.

Change-Id: I9580437d51153e1b5ccc291fdb6a6a67315be07d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3742700
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81515}

Rolling v8/buildtools/linux64: git_revision:ecaaf4b9e58a312a1610a37999eeccf58f73e264..git_revision:03ce92df5f9875bd9929b564be4b612713569aa9

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com

Change-Id: I4ddef50901edce840d56cc132835f52693725385
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743512
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#81514}

This reverts commit 84e078c6.

Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20UBSan/22000/overview

Original change's description:
> [fastcall] Support EnforceRange annotation
>
> This CL implements checks in case EnforceRange is requested for a
> given parameter by using TryTruncate* operators. It implements 2 such
> truncations on x64 and arm64 - TryTruncateFloat64ToInt32 and
> TryTruncateFloat64ToUint32.
>
> Bug: chromium:1052746
> Change-Id: I32f34d9dc1265af568cc576663620a8f7f8245f6
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3721618
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Commit-Queue: Maya Lekova <mslekova@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#81512}

Bug: chromium:1052746
Change-Id: I2218681c7cb5d05dea6d8ac5347b19bc0070c1a6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743514
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Owners-Override: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81513}

This CL implements checks in case EnforceRange is requested for a
given parameter by using TryTruncate* operators. It implements 2 such
truncations on x64 and arm64 - TryTruncateFloat64ToInt32 and
TryTruncateFloat64ToUint32.

Bug: chromium:1052746
Change-Id: I32f34d9dc1265af568cc576663620a8f7f8245f6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3721618Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81512}

Instruction selector is also modified to include a `relaxed`
boolean value to be used for future optimizations.

Change-Id: I1e314066655613846653cc0c3668167c4ef32648
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3735106Reviewed-by: Junliang Yan <junyan@redhat.com>
Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#81511}

Port commit a0a78665

Bug: v8:7748
Change-Id: I23e559917a76a01a7afb78403648372149a13c54
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3743122Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Auto-Submit: Liu Yu <liuyu@loongson.cn>
Cr-Commit-Position: refs/heads/main@{#81510}

This adds a new --experimental-value-unavailable flag, which is disabled
for now. When enabled the debugger reports values that are optimized out
by TurboFan and values of certain variables in Temporal Dead Zones (TDZ)
as unavailable. Internally we use a special `value_unavailable` accessor
info to represent these values, and on the debugger boundary we report
these properties with `value`, `get`, or `set`.

Doc: https://goo.gle/devtools-value-unavailable
Bug: chromium:1328681
Demo: devtools-dbg-stories.netlify.app/crbug-1328681-value-unavailable
Change-Id: Idb09a4a148335a950deae60f7c07caecc48826ba
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3627510
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81509}

Bug: v8:11544
No-Tree-Checks: true
Change-Id: I12b093da9f9f4f63bc67b1efaeefb735b8a6c5e4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3741001Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Auto-Submit: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81508}

Also add AOs: FormatISOTimeZoneOffsetString, TemporalZonedDateTimeToString, ToShowTimeZoneNameOption, ToShowOffsetOption,

Update FormatTimeZoneOffsetString to use ToZeroPaddedDecimalString

Spec Text:
https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.tojson
https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.tolocalestring
https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.tostring
https://tc39.es/proposal-temporal/#sec-temporal-formatisotimezoneoffsetstring
https://tc39.es/proposal-temporal/#sec-temporal-temporalzoneddatetimetostring
https://tc39.es/proposal-temporal/#sec-temporal-toshowtimezonenameoption
https://tc39.es/proposal-temporal/#sec-temporal-toshowoffsetoption

The intl version of toLocaleString is not implemented in this CL yet


Bug: v8:11544
Change-Id: Id7e4f72b63864857b0b3fa8dc8dfcba0b5949faa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3688848Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81507}

Bug: v8:11544
Change-Id: Iaf3d673c9746badadae082121402e723d3704189
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3719087Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81506}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/13924a1..9782ba0

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com

Change-Id: I1de68cb1af793810c753c80da76aad8b9712f12e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3741373
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#81505}