This CL renames the --d8-web-snapshot-api flag to explicitly mark it as
experimental, so that it is ignored by fuzzers.

Bug: v8:11525, v8:11706
Change-Id: Iff8a9d5697b60d0ade841773d1f0b537fcb19b70
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2922109Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Vicky Kontoura <vkont@google.com>
Cr-Commit-Position: refs/heads/master@{#74820}

Bug: v8:11420
Change-Id: Iede5f605f500c72b455906cc53fc417a16be1900
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919821Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74819}

Bug: chromium:1195977
Change-Id: Ic2fe906be7d700701f402c7bfb36c42f5a93ce24
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919824
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74818}

Bug: chromium:1056170
Change-Id: I7d8d27f7497ec403dd463e0e2a5b3d0134cfb637
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919960Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74817}

Bug: chromium:1201938
Change-Id: I5b2540f9bd817ab1a7b1f31bbf5e7eadbd1a004c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2922108
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74816}

Bug: chromium:1056170
Change-Id: I84bc0f77ac4a27d310416bb00c4caf7fa3d76551
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2922104
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74815}

Use a read-write lock for protecting original_top, original_limit and
pending_object for all spaces. This way Heap::IsPendingAllocation is
always guaranteed to read a consistent top/limit-pair and also the
last values for those fields.

The main thread will acquire an exclusive lock to update those fields.
Concurrent Turbofan threads will use shared locks to read them.

This may be quite expensive on the Turbofan-side, so landing this CL
should help us figure out how big of a regression this simple fix would
be. For main thread execution performance is supposed to be okay, since
this is only used on the allocation slow path.

Bug: v8:11778, chromium:1213266
Change-Id: I9464f53fd50057ec2540ab5b79f74ee52a5d7500
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2903143
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74814}

Bug: chromium:1056170
Change-Id: I09c6764c62cb459f3cfe317508bbc663debb66b7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919961Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74813}

Rolling v8/third_party/google_benchmark/src: https://chromium.googlesource.com/external/github.com/google/benchmark/+log/e539e80..db2de74

Fix pedantic compilation flag violation (#1156) (Mariusz Wachowicz)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/db2de74

fix version recorded in releases (#1047) (Kai Germaschewski)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/a4bcd93

Implementation of random interleaving.  (#1105) (haih-g)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/a6a738c

remove appveyor and add libera.chat as IRC resource (Dominic Hamon)
https://chromium.googlesource.com/external/github.com/google/benchmark/+/c983c3e

TBR=v8-waterfall-sheriff@grotations.appspotmail.com,mlippautz@chromium.org

Bug: chromium:1213169
Change-Id: Ic89fd04b6f121e8997b54dcbbbd4a43b2ce8ecb8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919959Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74812}

BUG=chromium:1003890

Change-Id: I3d4f51095ad33828857647be02290bfd5511399d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919965
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Auto-Submit: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74811}

Based on an analysis of auto-generated code, based on
browser_protocol.pdl and js_protocol.pdl:

https://goreportcard.com/report/github.com/daabr/chrome-vision#misspell

Bug: chromium:1213460
Change-Id: Ib96b2d2700d0bf1ac90e88accd0bc15eccbb9d7b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2848874Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74810}

https://tc39.es/proposal-intl-extend-timezonename/
https://chromestatus.com/guide/edit/4506375298220032

Bugs: v8:11661

Change-Id: I6d7e1bccf5a26ca02d39dc72d9362134a60ad6b9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2757899Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74809}

The timer might not be started when the main thread starts shutdown
between a background thread invoking RequestGC() and
AwaitCollectionBackground().

Add early bailout to AwaitCollectionBackground() in case shutdown
was already initiated.

Bug: v8:11823
Change-Id: Id646cdefa99adb04553c21337ad19538071ee3d1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919957Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74808}

As is, the DCHECK() has a #if inside, and MSVC has trouble
pre-processing that. Fix this by moving the conditional inside the
DCHECK() into a separate helper function.

Bug: v8:11760
Change-Id: Ib4ae0fe263029bb426da378afa5b6881557ce652
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919421Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74807}

Changes:
- Add --experimental-wasm-gc-experiments flag.
- Add array.copy opcode. Implement it in decoding and code generation
  behind the new flag.
- Add WasmCodeBuilder::BoundsCheckArrayCopy. Move BoundsCheckArray to
  the private section.
- Add WasmArrayCopy and WasmArrayCopyWithChecks builtin.
- Add WasmArrayCopy runtime function.
- Add WasmArray::ElementSlot.
- Always print two hex digits in CHECK_PROTOTYPE_OPCODE.
- In test-gc, print the thrown-error message if the function should not
  throw.
- In test-gc, add GetResultObject with one argument.

Bug: v8:7748
Change-Id: I58f4d37e254154596cdef5e78482b55260dd3782
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2912729
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74806}

Use compile-time DCHECK instead of Unreachable().

GenerateRecordWrite is disabled to prevent the use of PageFromAddress
when TPH is enabled.

Another user of PageFromAddress is TrapAllocationMemento, this will
be disabled in https://chromium-review.googlesource.com/c/v8/v8/+/2897326.

Bug: v8:11641
Change-Id: I1393d5ad52695a79750be00f2205648458f9c79d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2909216
Commit-Queue: Wenyu Zhao <wenyu.zhao@anu.edu.au>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74805}

This is needed after https://crrev.com/c/2911096, which rolled to V8 in
https://crrev.com/c/2921031.

Tbr: machenbach@chromium.org
No-Try: true
No-Tree-Checks: true
Change-Id: I0e884111aa605fe136321eb0d924bbf6d51e74b0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919958
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74804}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/74f9de2..2f6e88e

Rolling v8/buildtools/third_party/libunwind/trunk: https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libunwind/+log/7846d25..c8d0fb8

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/3caaaaa..e83a92e

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/72bc20e..6fc394f

Rolling v8/third_party/zlib: https://chromium.googlesource.com/chromium/src/third_party/zlib/+log/e4c7c48..5ef44f0

TBR=v8-waterfall-sheriff@grotations.appspotmail.com

Change-Id: I092c4ab1f3df290826d6861194a786f640c95f8a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2921031Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#74803}

Change-Id: I12ed18a488584b144bec6b1c1cef7ab01d1b5ce8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2917597
Commit-Queue: Brice Dobry <brice.dobry@futurewei.com>
Reviewed-by: Brice Dobry <brice.dobry@futurewei.com>
Cr-Commit-Position: refs/heads/master@{#74802}

Adds the following CB type RISC-V instructions to the assembler:
c.beqz, c.bnez, c.andi, c.srai, c.srli. Also removes sext_xlen
from RVC instructions c.xor, c.or, c.and.

Change-Id: I96ce4693019c28235ccd4f85d0a68ca89a3f4096
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2912922Reviewed-by: Brice Dobry <brice.dobry@futurewei.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Brice Dobry <brice.dobry@futurewei.com>
Cr-Commit-Position: refs/heads/master@{#74801}

Change-Id: Ib86c4d6237251308fb16cef73e22f2efaa8ecbdc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919308Reviewed-by: Brice Dobry <brice.dobry@futurewei.com>
Commit-Queue: Yahan Lu <yahan@iscas.ac.cn>
Cr-Commit-Position: refs/heads/master@{#74800}

People change their names and email addresses for many reasons. Adding
a `.mailmap` ensures that e.g. `git log` and `git blame` respect
people’s choices.

Bug: chromium:1213438
Change-Id: I03fcacff90d996d423283c345ddfc4ed9fccf98e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919671Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74799}

Change-Id: Id90dbf6dca8c3c06221922b6f65b2d72f5ac981a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2920747
Commit-Queue: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Auto-Submit: Junliang Yan <junyan@redhat.com>
Reviewed-by: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#74798}

This is a reland of 916eb869

Change compared to original:
Remove ternary operator from lambda, as this triggers a gcc bug.

Original change's description:
> Reland "[wasm][bug] Fix a couple of bugs in validation of unreachable code"
>
> This is a reland of 4a037f87
>
> Changes compared to original change: None. This seems not to create
> problems after all.
>
> Original change's description:
> > [wasm][bug] Fix a couple of bugs in validation of unreachable code
> >
> > Changes:
> > - SetBlockType now instantiates the block's start merge with values of
> >   the correct type in unreachable code.
> > - EnsureStackArguments now keeps the existing stack values and moves
> >   them over the new bottom values.
> > - Drop stack size validation in Drop().
> > - Add new tests in unreachable-validation.js.
> >
> > Change-Id: Ie68b3d9abb0a41d1623d4a123fb526e71941c4e7
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2902733
> > Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
> > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#74650}
>
> Change-Id: Id620f7fb6677b772b0dcfd38108256384db44439
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2905598
> Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#74677}

Bug: v8:11819
Change-Id: I9b8d915547ec9aee7cb5233937089d431db54c8f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919833
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74797}

Bug: v8:11804
Change-Id: I6eddf2d836c3916622768ef2a7d878157e89e4c8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2772980Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74796}

They check for AVX and uses the AVX instruction if available. This is a
follow-up CL to https://crrev.com/c/v8/v8/+/2912778

Change-Id: Ib53f06f03ac1067366b76b9193d8db98c394ce50
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919853
Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74795}

Build with single generation mode failed because
new_space_allocation_top() and new_space_allocation_limit() both return
nullptr now without a new space. Previously the DCHECK succeeded because
both methods would call the NewSpace methods with null as this pointer.

Bug: v8:11708
Change-Id: I74babded2c790642e74722ed53794aecebec4344
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2917604Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74794}

When BranchElimination has to find the common prefix of a set of
BranchConditions in a Merge, it has to traverse a number of linked lists
of individual conditions, which is inefficient.
This CL improves its performance by grouping conditions between an
IfTrue/IfFalse and a Merge in a single entry of BranchConditions.
Additional change: Improve documentation of FunctionalList.

Change-Id: I93a58886151f6831cafb483aafb48e8e6c2433e5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2917600
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74793}

The verbose output shown on bots didn't print the first failing result
of a flaky test before. Now the result line shows all results and
the details in the end show the output of the first failure.

Previously it was confusing as it seemed that the json results and
the test runner output differed.

We now print PASS in all caps like the other statuses. A test for
this case already existed and the output is now updated.

Bug: v8:8434
Change-Id: I473ec392e0028bf64b3da53d4b37446ffcd17277
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919670
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Auto-Submit: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74792}

Without the explicit constexpr keyword, Clang seems to be able to treat
these methods as constexpr, whereas MSVC will not.

Bug: v8:11760
Change-Id: I9f6492f38fb50dcaf7a4f09da0bd79c0da6a50eb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2912916Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74791}

The new functionality is hidden behind the --wasm-gc-js-interop flag.

Bug: v8:11804
Change-Id: I9dd779efe3dbf3c773948b6fd8872e3aea8cd7a6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2912784
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74790}

Change-Id: I55a80003a148c80f2b7a1f644c127d81963f8ac7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2918141Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/master@{#74789}

Bug: v8:11367
Change-Id: I2d21d3deea73a9930acb3bf2efd3268ec1fd64b4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919830Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74788}

This fixes a compile error in no-wasm / jitless builds introduced in
https://crrev.com/c/2912779.

R=neis@chromium.org
CC=manoskouk@chromium.org

Cq-Include-Trybots: luci.v8.try:v8_linux64_no_wasm_compile_rel
Cq-Include-Trybots: luci.v8.try:v8_linux_arm_lite_rel_ng
Change-Id: Ia256679dba5093b30821859376aba81b4900efed
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919829Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74787}

This is no longer supported and currently fails later when V8 is
executed if taken, so remove it and fail early during initialization.

BUG=chromium:1208472

Change-Id: I0a1fe947facef0128c6695a4091c5fe8d4c56cc6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2919668
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Auto-Submit: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74786}

ThinStrings are essentially a pointer to an InternalizedString. Read
them concurrently in places where we read InternalizedStrings.

Bug: v8:7790, v8:11791
Change-Id: I3be4dd27336f58706c9c57d5042f96cb8f56bcaa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2905608
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74785}

Also change:
- {NormalPageSpace, LargePageSpace}::From()
- ObjectAllocator::*

Bug: v8:11822
Change-Id: I78a1a5379e16fc1e1c95136d7aa8cc34caed0413
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2917042
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74784}

This CL adds support for testing web snapshots through mjsunit tests.
To allow for taking and using web snapshots from JavaScript, two
methods, Realm.takeWebSnapshot() and Realm.useWebSnapshot(), are
introduced in d8.

Both of these methods accept a Realm as a parameter, allowing for
mjsunit tests to create and use the snapshot in different realms.

To return the snapshot data, Realm.takeWebSnapshot() creates and
returns a snapshot object with the snapshot data stored as an embedder
field.

Bug: v8:11525, v8:11706
Change-Id: I6e514e10eabf5bdb96d81e2697d4ddc49d92de73
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2905610Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Vicky Kontoura <vkont@google.com>
Cr-Commit-Position: refs/heads/master@{#74783}

Port ec4fd32c

Change-Id: Ia952dc6f7478b90dc61ceb029f10feb79243d01d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2918988
Auto-Submit: Liu yu <liuyu@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#74782}

Inline the SaveFPMode flag directly into the TSANRelaxedStore stubs:
 - Saves one register for input arguments
 - Avoid branches in the TSANRelaxedStore stubs

Bug: v8:7790, v8:11600
Change-Id: Ib1083f8c1a7e856028ff606ba8c2a93efb10db69
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2917037Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74781}