This reverts commit 128368c3.

Reason for revert: Just to trigger builders

Original change's description:
> Whitespace to trigger builders
> 
> TBR: machecnbach@chromium.org
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Change-Id: I208d974b1da1983a8fa5996e6819779bd35d8710
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2153216
> Commit-Queue: Liviu Rau <liviurau@chromium.org>
> Reviewed-by: Liviu Rau <liviurau@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#67193}

TBR=machenbach@chromium.org,liviurau@chromium.org

Change-Id: I87aa28cd4c50d2c63f17e7ccc50425bf05faa39f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2153218Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67194}

TBR: machecnbach@chromium.org
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: I208d974b1da1983a8fa5996e6819779bd35d8710
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2153216
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Reviewed-by: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67193}

Port fc29c453
https://crrev.com/c/2148640

Change-Id: I75092072ac6961c26559bd69d6a8413d2e9d2689
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2153189Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#67192}

Bug: v8:9909
Change-Id: Ic71a2a012cbd538d65afb047fe73e98be6454aed
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2150157
Commit-Queue: Fanchen Kong <fanchen.kong@intel.com>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67191}

Instead of putting the 16 immediate bytes on the stack,
we move them into a temporary register.

The instruction-selector then has to change, to ensure that
the operands are distinct from the temporary.

Tested on the two workloads given in
https://github.com/zeux/wasm-simd/issues/2#issuecomment-614399004

For slow, the row "filter:" oct12 goes from ~50ms to ~27ms,
the rest of the figures look about the same or slightly faster.
For optimal, the same figure goes from ~25ms to ~24ms,
the rest of the figures look slightly faster.

Raw outputs are uploaded to bug.

Bug: v8:10117
Change-Id: I7f77a3066b5e24584f1c01574aa9311f56bd7fb4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2152853
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67190}

Bug: v8:9909
Change-Id: I1ec888ce0b3389afcb0edd1033bef179327e140c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2148640Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhiguo Zhou <zhiguo.zhou@intel.com>
Cr-Commit-Position: refs/heads/master@{#67189}

.type directive is required on arm to enable ARM/Thumb interworking.

Bug: chromium:1071168
Change-Id: I2ff5046719b9c8f611e81970bfa61c68ed850362
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2153207Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67188}

A new realm doesn't contain the mocks and suppressions on the global
object for correctness fuzzing. We replace Realm.eval with eval to
keep exercising the code.

Bug: chromium:1071133
Change-Id: Iffe82d37bf08829fc5937c17c2089277403e71dc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2153206Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67187}

SIMD opcodes consist of the prefix byte, then an LEB128 encoded int. We
were decoding this incorrectly as a fixed uint8. This fixes the decoder
to properly handle multi bytes.

In some cases, the multi byte logic is applied to all prefixed opcodes.
This is not a problem, since for values < 0x80, the LEB encoding is a
single byte, and decodes to the same int. If the prefix opcode has
instructions with index >= 0x80, it would be required to be LEB128
encoded anyway.

There are a bunch of trivial changes to test-run-wasm-simd, to change
the macro from BUILD to BUILD_V, the former only works for single byte
opcodes, the latter is a new template-based macro that correct handles
multi-byte opcodes. The only unchanged test is the shuffle fuzzer test,
which builds its own sequence of bytes without using the BUILD macro.

Bug: v8:10258
Change-Id: Ie7377e899a7eab97ecf28176fd908babc08d0f19
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2118476
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67186}

Bug: v8:9909
Change-Id: Ia5038fccb756d79b08b10a5fd0664b0da8b6a8ca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2151172Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67185}

This is a follow-up fix for https://crrev.com/c/v8/v8/+/1491608

Bug: chromium:1051186
Change-Id: Ia76ad0e7665fe17013b45816350238c35e7199f6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2049899Reviewed-by: Frank Tang <ftang@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Auto-Submit: Yury Semikhatsky <yurys@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67184}

- Adds kFPReturnRegister0 for all platforms.
- Reworks linkage.cc to assign return registers to the proper
  register type, using the new FP return register.

Bug: v8:10070

Change-Id: I5c876d248de9b825a1c80847ab134881dcda6f04
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2107510Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67183}

These tests were skipped three years ago because of flakes. I cannot
reproduce the flakes any more, so reenabling the tests.

R=petermarshall@chromium.org

Bug: chromium:772010
Change-Id: I4dc2d890b20e642f8d9351676aecab965d2b4b63
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2151357
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67182}

Bug: v8:9909
Change-Id: Ib94db390f70ddaa7eafb5af77023b1024c2b96b9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2151168Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67181}

When we create a new elements array we should initialize it with holes.
The capacity of the newly created elements array could be greater than
the actual length of the array and we expect the unused slots to be
filled with holes.

Bug: chromium:1070560
Change-Id: Ia365eed59859e36a9c8b9e27be34f93ab88942bb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2150599
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67180}

No-Try: true
Bug: v8:10423
Change-Id: Ic75147496bb544871b8add5034409b8c7acfbcfc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2151364
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67179}

This CL relands the implementation of the __getLocal and __sbrk APIs of
the evaluator interface reverted in efea7407. Update the original
commit to account for a changes to the import function name tracking and
defaulting to debugging with liftoff.

Change-Id: I9674aad419fb1dab0a9ecbb5d3fd4c33186b127a
Bug: chromium:1020120
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2151353
Commit-Queue: Philip Pfaffe <pfaffe@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67178}

Adds an pure (not inline) assembly version of
PushAllRegistersAndIterateStack for the Microsoft Arm Assembler, which
uses slightly different syntax.

Bug: v8:10407
Change-Id: I539e2021bd86e17a2d023c061c9753b4bd96ce2c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2150600
Commit-Queue: Richard Townsend <richard.townsend@arm.com>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67177}

The failure was probably the same as in https://crbug.com/v8/10410. Thus
reenable the test also in the stress_incremental_marking variant on
windows.

R=thibaudm@chromium.org

Bug: chromium:772010, v8:10410
Change-Id: Iad0b9b60408e08c5f2202462f6eeba3067525ae5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2151356Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67176}

This cleans up several parts of the tiering logic.
1) Instead of using the {ExecutionTier} to specify whether we do tier up
   or down, we introduce a new {TieringState} enum and use that
   consistently (also where a {bool} was used before).
2) When tiering up or tiering down, always recompile all functions. It's
   very unlikely that we can reuse previous code anyway (tiering down is
   cheap enough to just always do it, and when tiering up we need to
   recompile everything anyway).
3) Remove the {WasmEngine::RecompileAllFunctions} method and inline the
   implementation into callers.
4) Drive-by: Remove some obsolete comments and fix or extend others.

R=thibaudm@chromium.org

Bug: v8:10410
Change-Id: Ic765c6760dd97473ccfd469f22a2514695075587
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2151355Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67175}

On-heap TypedArrays have empty ArrayBuffers that are not supposed to be
accessed directly. Such ArrayBuffers materialize properly when accessed
via their TypedArrays.

The queryObjects() sidesteps the bottleneck and finds empty ArrayBuffers
by iterating the heap. When preview TypedArrays are constructed for the
found ArrayBuffers, they get nullptr data pointers.

This CL converts all on-heap TypedArrays into off-heap TypedArrays in
queryObjects to make sure that all found ArrayBuffers are valid.

Bug: chromium:992442
Change-Id: Ie77d1e75aa2007b4a976c72206b9a4e215c9ef53
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2150601
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67174}

The existing interface assumed that for atomic binop instructions, the
value register and the result register are the same. However, for x64,
this assumption is not always useful, and for platforms like arm, this
assumption is even negative.

The existing interface was originally introduced because ia32 lacks
registers, and we wanted to avoid platform-specific code in
liftoff-compiler.cc. However, by now the lack of registers on ia32
required us to use platform-specific code also in other places, so
we can also use it for atomic binops and thereby enable a better code
generation.

R=clemensb@chromium.org

Bug: v8:10108
Change-Id: If39cc5f49934422b632bb2a5793c7f5d5d2b65c0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2150585Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67173}

Change-Id: Ic5dbf4c3330c71cbae73aa07b2adb1c8ac087182
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2151348
Auto-Submit: Georg Neis <neis@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67172}

JSObject::SetImmutableProto is called from InstantiateObject
in api/api-natives.cc:
https://source.chromium.org/chromium/chromium/src/+/master:v8/src/api/api-natives.cc;drc=98497572964c764de5dc32a54a62c66943ed8499;l=369
https://source.chromium.org/chromium/chromium/src/+/master:v8/src/api/api-natives.cc;drc=98497572964c764de5dc32a54a62c66943ed8499;l=423
So, non JS code will hit the DCHECK being removed in this patch.

Actually, Blink hits this DCHECK when implementing Location
object's [[SetPrototypeOf]] as SetImmutablePrototype.
c.f. https://crrev.com/c/2145516

Change-Id: I88b2715d645f5ea792ef33cb67a6990c762ad338
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2143982Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67171}

This reverts commit 52412058.

Reason for revert: Use counters are not the right approach, we
need histograms instead.

Original change's description:
> [protectors] Add use counters to track invalidations
> 
> ... to make real world protector invalidations measurable.
> 
> Chromium CL: https://crrev.com/c/2149324
> 
> Drive-by: Add missing newline in protector tracing.
> Drive-by: Consistent naming for the regexp species protector.
> 
> Bug: v8:9496
> Change-Id: I3c7238aa8024e03ea9e89daf83345b8ec4f0d768
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2149428
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#67149}

TBR=ulan@chromium.org,jgruber@chromium.org

Change-Id: Ia36b598844fbad2166772298c2e2ec8f6b4f92b1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9496
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2151358Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67170}

R=verwaest@chromium.org

Fixed: v8:7463
Change-Id: I3d0127865ad0430d38124c3ad8ed3bc63ba4e6d3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2149421
Auto-Submit: Yang Guo <yangguo@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67169}

Trying to write an empty byte array currently invokes undefined behavior
if the byte array is null. That's the case when trying to write an empty
vector for example. Copying zero bytes from nullptr is defined as UB for
memcpy.

Change-Id: I6f7e920c1e19e8b2e3779bbc1c0ad79fc8bd6e98
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2148789
Commit-Queue: Philip Pfaffe <pfaffe@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67168}

This adds support for custom weak callbacks through static callbacks and
instance methods.

Bug: chromium:1056170
Change-Id: Ie4bd32539e0d933b192f07edb2d45e0070c2128d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2148784
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Reviewed-by: Omer Katz <omerkatz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67167}

This reverts commit https://crrev.com/c/2144966, which was merged to
v8.1 in https://crrev.com/c/2151345.

R=thibaudm@chromium.org

Bug: chromium:1070199
Change-Id: Idb25cfaa52f7f7aa07353cf0372e6758adb58d78
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2151346Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67166}

Port ad55fa63
https://crrev.com/c/2147148

Change-Id: I5375ae4bddb2221c6f7860e55111c95beeed757d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2152069Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#67165}

They were installed as builtins for historical reasons (see
https://codereview.chromium.org/2222893002 ).

But they're pretty much unnecessary, as they were mostly dead code,
except MakeTypeError - but that work can be delegated to Runtime_NewTypeError.

Change-Id: I0c3b361accf9a96da5cd00cc62b7f018186dad17
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2150597Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67164}

https://chromium.googlesource.com/infra/infra/+/56ae79476e3caf14da59d75118408aa778637936

Bug: chromium:1070487
Change-Id: I11e824f5983ebb94cdabc1c9e52baddf3e3311cd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2152067
Auto-Submit: Ye Kuang <yekuang@google.com>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67163}

Port 1a7f5689
https://crrev.com/c/2129635

Change-Id: Iee46bdb05f1c412dcdb7299a8b74f9c8ce2e7d4d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2143985
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67162}

To avoid shrinking the unregister token map on each pop of the cleared
cell list, the Torque implementation of the cleanup loop avoids
shrinking the map until the end of the loop.

To support that, PopClearedCellHoldings is refactored to the Torque
PopClearedCell which calls the
JSFinalization::RemoveCellFromUnregisterTokenMap and the runtime
ShrinkFinalizationRegistryUnregisterTokenMap. The former cannot GC is
and is implemented in CSA as a fast C call. The latter can GC and is a
runtime call.

This also incidentally makes uses of FinalizationRegistry without
unregister token a fast path that doesn't have to leave Torque.

Bug: v8:8179
Change-Id: Ia0c3c5800d26e31319a818f164f6bd3267355aa6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2137950
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67161}

This debug::WasmValue is a wrapper around internal::WasmValue. It is exposed
to the inspector, and contains helper methods to get the type and underlying
bytes of the Wasm value. This will later be used by the inspector, in
value-mirror, to expose the WasmValue to DevTools via CDP.

Bug: v8:10347
Change-Id: I1ee20c0be3a20dad2cfe3994a166e9a284af5d4f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2137864Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67160}

Bug: chromium:1043034
Change-Id: I18b1c307ab198e7fbd4d5bc7df399c310f317c4b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2149419Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Kim-Anh Tran <kimanh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67159}

Bug: chromium:364374
Change-Id: I361403b26529860c4240d06766a82937ee8ca115
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2150070
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67158}

Bug: v8:9909
Change-Id: I8beaa9a430c86c00311e5cc713c2870d2a588ab8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2149712Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67157}

Bug: v8:9909
Change-Id: I6e367b98c0f85c740947d72e9b0a29870e9e03e2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2147602Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67156}

Port 325e3290

R=jing.bao@intel.com, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: I743d710a501e1f01cbe4c4052fb26423e8a3990e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2150303Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#67155}