This fixes an issue in WasmScript::ClearBreakPoint, which is was still removing
breakpoints in the interpreter, even when debugging in Liftoff.
The existing test inspector/debugger/wasm-stepping-liftoff.js does not require
any changes.

Change-Id: I5c60839ffde91cdd11d9f808a3102f2cc1324087
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2136872Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Paolo Severini <paolosev@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#67065}

Several JS tests are already skipped in that config. This CL adds a wasm
test that also started flaking.

TBR=thibaudm@chromium.org

Bug: v8:10410, chromium:772010
Change-Id: Ie16d60a5066a56005d9cf1e4951d6ed1c17e4dc7
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2142256Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67064}

This fix is a bit of overkill, but ensures that verifier methods are
available across library boundaries.

Change-Id: I120560f8e8e0be0ffcba43b46197efca4db0a62c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2141739Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Daniel Clifford <danno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67063}

Change-Id: If7691bc70aac4a8f2ba8fe383bd44a829a9a0bdb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2132265Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Philip Pfaffe <pfaffe@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67062}

This change comprises a few tiny changes wrt Member:
1) Move member policies to a separate file so that some of them
(CheckingPolicy) can be reused by Persistent;
2) SFINAE out incompatible pointers from heterogeneous ctor/asgnmt;
3) Rename kMemberSentinel to kSentinelPointer.

Bug: chromium:1056170
Change-Id: I4482998e6ba61005a5d0861dcae9fab2aa43702c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139587Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67061}

For keyed stores we recompute handlers when we see a new map so that
we could transition to the most general elements kind we have seen so
far. When recomputing these handlers we drop the deprecated maps.
Instead we could TryUpdate deprecated maps. This would be inline with
what TurboFan does and also may be better for performance.

Bug: chromium:1053939
Change-Id: Id38b60538d56f4b376460c0faece20768a18f25f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2130129
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67060}

This is still unused but will eventually be used by fuzzers.

Bug: v8:10249
Change-Id: Ib592a5a8da1399ad8fb5a277ea94fda68b382058
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2141735Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67059}

JSNativeContextSpecialization lowered this operator to a regular
property store, potentially ignoring a request to set the "name"
property of a function.

This CL performs the lowering only if there's no such request.

Bug: chromium:1068494
Change-Id: Ia2eaf05af9c8402f9e6450ee519a7c36c18cd44e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139581
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67058}

Debugging with multiple isolates involved is known to be broken.

TBR=thibaudm@chromium.org

Bug: v8:10359
Change-Id: I2f32cd4b7b53492508948a85e9750167b25b8d89
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2140938Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67057}

The two refactorings are somewhat orthogonal, but intersect at the
class and instance type list generation, which is why it's easier to
put them in one CL.

For the removal of HasIndexedField, the removal is motivated by the
fact that is no longer necessary, and that using a flag to store this
kind of information is hacky.

For the class list changes, this is a cleanup in that we no longer
generate third-order macros, but instead normal macro lists.
There is a functional change and bug-fix in that we no longer include
abstract classes in lists that refer to instance types or maps. It's
still somewhat broken though, so I can't test abstract internal classes
yet, though. Coming in a follow-up CL.

TBR=ulan@chromium.org

Bug: v8:7793
Change-Id: Ided8591370570ca3810d7991f53177ca32e03048
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2108034
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67056}

The macro magic used to assemble the operator cache in
machine-operator.cc was quite involved and difficult to follow.
This change replaces many macros with templates and simplifies the
logic. Similar changes could also be applied to other operator builders.

Change-Id: Ie4268c59b7c663f1aac360c87e9cce3100c90a29
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2132246
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67055}

Bug: chromium:1056170
Change-Id: I98bbff8d2938c6b34fe2c358d504ba6211ec8b54
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2140931Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67054}

Seems I need a new one

No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: If3befbd243d17a885aea360ec27e372fa05bbb2b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2140934Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67053}

Debugging with multiple isolates involved is known to be broken. Thus
skip another test which flakes currently.

TBR=thibaudm@chromium.org

Bug: v8:10359
Change-Id: Ib0758794623cca1cf9bdd6d6d8aa673ceffd9d7c
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2140933Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67052}

This reorders the SIMD opcodes together with their implementations
on x64, ia32 according to src/wasm/wasm-opcodes.h.

Bug: v8:9909
Change-Id: Ib2e75927b3b44ebc951005222c8641c256d8872c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2135074Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhiguo Zhou <zhiguo.zhou@intel.com>
Cr-Commit-Position: refs/heads/master@{#67051}

Headers containing only implementation details are better to stay in a
separate dir to indicate the user that they shouldn't be included.

Bug: chromium:1056170
Change-Id: I10f84ddf709b146396aadc820ec33bc6a49b2dac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139585Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67050}

This is a reland of 44826509.
TSan issue were fixed in https://crrev.com/c/2139574. One test
failing in the 'stress' variant is skipped for now, until we figure
out what the intended behaviour actually is.

Original change's description:
> [wasm] Debug in Liftoff by default
>
> This flips the --debug-in-liftoff flag to be on by default.
> There are still some outstanding issues with that configuration, but not
> more than with the interpreter configuration. Thus flip now, such that
> we can fully focus on stabilizing that config.
>
> R=ecmziegler@chromium.org
>
> Bug: v8:10351
> Change-Id: I7681f40aa2516557ef3ab4efd9a2c1f88e3b4df7
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2135727
> Reviewed-by: Emanuel Ziegler <ecmziegler@chromium.org>
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#67018}

Bug: v8:10351, v8:10403
Change-Id: I4c2f1af46233546d6ebeb638c7ef10aac56cd92d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139575
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Emanuel Ziegler <ecmziegler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67049}

TBR=verwaest@chromium.org

Change-Id: If18d402f9b0b9c500307fd454eafe93de701599c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2141731Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67048}

The compare operations pass a hard-coded first argument to the emit
function. Instead of implementing this via a lambda, put it in a separate
{BindFirst} helper, similar to {std::bind_front} (C++20).

R=zhin@chromium.org

Bug: v8:10364
Change-Id: If48c87a3df5ea6fa2b155873e4586af5d6b21119
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139580Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67047}

Neither Member, nor GarbageCollected objects (and friends) should be
allocated on the stack. Create a special test fixture that allows for
writing idiomatic unit tests that depend on allocation but do not pull
in garbage collection.

Bug: chromium:1056170
Change-Id: I4118201a51658f7247412434a867d35c91299439
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139583Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67046}

Bug: v8:9909
Change-Id: Ia680558a03c4de4cf31e233d58e574020a58a0d2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2137476Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67045}

Bug: v8:9909
Change-Id: Ie56a99718ee16b70e93ae812a68a1cb08f95da56
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2136869Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67044}

Bug: v8:9909
Change-Id: I578f797f27c304c5212597fe146d62c3607f8d2e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2137471Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67043}

This is to avoid a lock inversion problem. In many situation, the
{NativeModule} lock is held while getting the {DebugInfo} lock.
Hence we should never do is the other way around, otherwise we risk a
deadlock.
When setting a breakpoint, we hold the {DebugInfo} lock when triggering
recompilation, but recompilation accesses the {NativeModule} for
creating the {CompilationEnv}, and therefore takes the {NativeModule}
lock.
This CL fixes this lock inversion by giving up the {DebugInfo} lock
before recompiling functions.

R=thibaudm@chromium.org

Bug: v8:10351
Change-Id: Ic818c6589b2b532006aee4c16bac92b2fe79fa65
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139574
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67042}

This CL adds the necessary traits to dispatch from Member through a
visitor implementation for GarabgeCollected and GarbageCollectedMixin.

Bug: chromium:1056170
Change-Id: I12680335044aaa842639fb5e8f9a3ac61587f51a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2138431Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67041}

Bug: v8:7793
Change-Id: I3a49a6208be8e6dd68c261dc423ee80cc891b806
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139577Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67040}

Print ALL_VARIANTS and VARIANT_ALIASES when passing a wrong
--variants argument to tools/run-tests.py.

Change-Id: I6d4278633dd11990d0ace1c93f544213fbfc156e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139579
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Reviewed-by: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67039}

This removes the stack from the local scope, as the stack is now
in its own scope.

Bug: chromium:1043034
Change-Id: I595604da71ecf4362ef67134ade8b3987086d258
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2128049Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Kim-Anh Tran <kimanh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67038}

Avoid name clash with Safepoint in src/codgen and use renaming to
emphasize that class reaches a safepoint in each background thread.

Bug: v8:10315
Change-Id: I391cdcfaf533a0fe0d5923207234eb2a8411eb93
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139576Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67037}

Assumes that (is_clang = false && is_win) => Windows native (MSVC).

Cross-compile builds will use clang and not the native tools and thus
not fall into this category.

This CL adds x86 and x64 MASM trampolines that can be used with the
native Windows toolchain (ml.exe, ml64.exe), when using is_clang =
false.

This reverts commit 8e4a5e97.

Bug: chromium:1056170
Change-Id: I7204f15898ec5eddcc5892d4d08266a69d84ab85
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139211
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67036}

Port dd1dbd99
https://crrev.com/c/2134420

Change-Id: Ia1ab8e07a6e126e5b4cdaa5113846d859dd9e9e1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2138654Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#67035}

Local is used in other contexts as well, e.g. LocalIsolate or LocalHeap. Make it clear from the name that EvacuationAllocator is only used during collections.

Bug: v8:10315
Change-Id: I7483270aabc3dfe1fdecf0e77d1638c6711a8a2c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2137413Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67034}

The dummy sweeping algorithm didn't actually remove objects from the
internal list.

Bug: chromium:1056170
Change-Id: I29a93a2ac7fc36ca95125805076ff5ce257de8a4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2138433
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67033}

This reverts commit 2de2d3dc.

Reason for revert: https://ci.chromium.org/p/v8/builders/ci/V8%20Mac64%20GC%20Stress/11982?

Original change's description:
> [runtime] Amortize descriptor array growing for fast-mode prototypes
> 
> This avoids an O(n^2) algorithm that creates an equal amount of garbage.
> Even though the actual final descriptor array might be a little bigger,
> it reduces peak memory usage by allocating less.
> 
> Bug: b:148346655
> Change-Id: I984159d36e9e0b37c19bc81afc90c94c9a9d168a
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2135728
> Commit-Queue: Toon Verwaest <verwaest@chromium.org>
> Reviewed-by: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#67031}

TBR=ishell@chromium.org,verwaest@chromium.org

Change-Id: I366141f1dbba62ff268df7ef625cc318f8423818
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: b:148346655
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2139212Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67032}

This avoids an O(n^2) algorithm that creates an equal amount of garbage.
Even though the actual final descriptor array might be a little bigger,
it reduces peak memory usage by allocating less.

Bug: b:148346655
Change-Id: I984159d36e9e0b37c19bc81afc90c94c9a9d168a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2135728
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67031}

https://chromium.googlesource.com/external/github.com/tc39/test262/+log/ae8694b4..62b8fce3

62b8fce Deleting previously valid generated tests by Rick Waldron · 2 days ago master
539c001 Updating test with 'o?.#field' to be valid program by Caio Lima · 2 days ago
df59ad6 Add AsyncIteratorClose tests by Alexey Shvayka · 2 days ago
fccd9c4 Add IteratorClose tests by Alexey Shvayka · 2 days ago
966fc11 Migrate FinalizationRegistry tests to per-item callback API by Shu-yu Guo · 2 days ago
4199a3b Add integer index property name test by Alexey Shvayka · 3 days ago
b69390e Add string property name test by Alexey Shvayka · 3 days ago
00cf7a1 Rename "trap-is-undefined-receiver.js" by Alexey Shvayka · 3 days ago
40a1a6f Improve RegExp LegacyOctalEscapeSequence coverage (#2558) by Alexey Shvayka · 3 days ago
772fd32 Promise.any: remove erroneous SpeciesConstructor tests until a better solution can be found. (#2562) by Rick Waldron · 3 days ago
ffaae1f Logical Assignment Operators: additional syntax tests by Rick Waldron · 4 days ago
2778324 Fix tests by Justin Ridgewell · 4 days ago
78dbc40 Add logical-assignment-operators feature by Justin Ridgewell · 4 days ago
fdf4675 Add tests for Logical Assignment by Justin Ridgewell · 4 days ago
6499fa6 Adding missing cases of instance field without assignment and static field with assignment by Caio Lima · 4 days ago
740e157 Adding test to cover case where there is a static field named as 'static' by Caio Lima · 4 days ago
d279980 Add single quote string literal test by Alexey Shvayka · 4 days ago
4742461 Add double quote string literal test by Alexey Shvayka · 4 days ago
1150fe4 Add template literal test by Alexey Shvayka · 4 days ago
b90a11e Add `throw` method test by Alexey Shvayka · 4 days ago
543370c Add `return` method test by Alexey Shvayka · 4 days ago
1bf4e15 Add `next` method test by Alexey Shvayka · 4 days ago

Bug: v8:7834, v8:8179, v8:10394, v8:10395, v8:10396, v8:10397
Change-Id: Ib5c0e842179b9592501215f8789529c1070b118b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2136291
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67030}

WasmValue holds a Wasm value with its type. This will be exposed to the
inspector (via a to-be-created class in debug_interface.h) for debugging
in DevTools.

Design at http://doc/1XQlX6DWsv6BPYnRtw-JZSASPEjsRlyXLnke7TTQ9Wrg.

Bug: v8:10347
Change-Id: Ib523e617d46fdf1adb13d13bf49749c4ce23a126
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2132720Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67029}

This reverts commit cff2617b.

Reason for revert: Breaks https://ci.chromium.org/p/v8/builders/ci/V8%20Win64%20-%20msvc/13100?

Original change's description:
> cppgc: Stack scanning support for Windows native
> 
> Assumes that (is_clang = false && is_win) => Windows native (MSVC).
> 
> Cross-compile builds will use clang and not the native tools and thus
> not fall into this category.
> 
> This CL adds x86 and x64 MASM trampolines that can be used with the
> native Windows toolchain (ml.exe, ml64.exe), when using is_clang =
> false.
> 
> Bug: chromium:1056170
> Change-Id: Ic37ce721a76ce027ebf45bef441b8fba4789dc9b
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2137408
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Anton Bikineev <bikineev@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#67025}

TBR=mlippautz@chromium.org,bikineev@chromium.org

Change-Id: I86286d4f438468350a81b3965956d47ae35d1c6d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1056170
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2138432Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67028}

Needed to land ICU67.1 soon.

Bug: v8:10393
Change-Id: I3c7737ca600d6ccfdc46ffaddfb318ce60bc7618
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2136489Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67027}

This relands commit 7d955faa.

Changed the test case to use i16x8 splat instead of i8x16 splat,
the latter was causing issues when doing scalar lowering. This
change still causes the regression test to fail without the fix.

Original change's description:
> [wasm-simd][x64][ia32] Do not overwrite input register
>
> We are ovewriting input register (contains the shift) when we are
> masking it, instead, move to a temporary,then mask it.
>
> Bug: chromium:1065599
> Change-Id: Iab72b94581239447e444746681387350b576e24a
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2125941
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66997}

Bug: chromium:1065599
Change-Id: I0dc78ddb013652ef88c07d065c3f6877937c5300
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2136220Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67026}