Separate creating Wasm translations from reporting them to an agent.
This is done in order to support multiple connected sessions.

Previously connecting more than one agent would fail assertion in debug
mode and overwrite translation objects over and over
(and potentially do something worse) in release mode.

Bug: v8:9725
Change-Id: I13fde5ebf6e64e7268eb6870f9c21ac9a5bed81e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807273Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Ingvar Stepanyan <rreverser@google.com>
Cr-Commit-Position: refs/heads/master@{#63867}

During deletion in the write-back phase, we do not necessarly need
to check with HasOwnProperty before calling DeleteProperty. Since this
is observable behavior when using proxies, we remove the HasOwnProperty
check to mirror more closely what Spidermonkey does.

R=jgruber@chromium.org

Change-Id: I67768b1d8b13e695b956b2fa0624dcb28fd0664d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1809366Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63866}

BUG=v8:6949,v8:9396,chromium:1004912

Change-Id: Ifa8207283aadad258281bffda6d49da574402a24
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1809370
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Auto-Submit: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63865}

In the mjsunit/wasm/asm-wasm-f32 test, {IsValid} caused 10% of the
overall runtime. In absolute numbers, {IsValid} wasm called more
than 6.000.000.000 times. I moved the calls to {IsValid} from
before-use to after-modification. I removed the calls in {Combine}
and {Remove}, because these operations cannot create an invalid
CPURegList.
These changes reduce the number of calls to {IsValid} to about
100.000.000 in the test mentioned above, and saves for that test
about 10 seconds out of before 2 minutes absolute runtime.

R=v8-arm-port@googlegroups.com

Bug: v8:9396
Change-Id: If3059f471e423405ec6f34ddef89e314dee1cbaf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1801851
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Martyn Capewell <martyn.capewell@arm.com>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63864}

This is an unmodified reland of
60624b56. Nosnap bots do not block
LKGR any more: https://crbug.com/v8/9737#c10.

Original change's description:
> Disallow nullptr arguments for {CopyChars}
>
> This allows to remove special casing for the {count == 0} case, which
> was needed because {memmove} does not accept {nullptr} arguments even
> if the {count} is zero.
>
> R=leszeks@chromium.org
>
> Bug: v8:9396
> Change-Id: Iaef3cdbbffa74c2ba1c4e4501dafd943282cbcd9
> Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807366
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63838}

TBR=leszeks@chromium.org

Bug: v8:9396
Change-Id: I6ab13575f13df060b450ff105e4b9db516671dcf
Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1809365Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63863}

This introduces {GetWasmFunctionOffset} to replace the above method,
since calculating offsets into the wire bytes is independent of the
concrete module object and hence only needs the shared decoded module.

R=clemensh@chromium.org
BUG=v8:6847

Change-Id: I6818de4589e26dd8f69dfb71d15bbca127c7ee3e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1809368Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63862}

TNodify related methods in CSA:
 * TaggedToWord32OrBigInt
 * TaggedToWord32OrBigIntWithFeedback
 * TaggedToWord32OrBigIntImpl

Remove Sloppy-ness in RelationalComparison

Bug: v8:6949
Change-Id: I970a40a424f6e8cdc45544eb79c95291a5a5a608
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807362Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63861}

This introduces {DisassembleWasmFunction} to replace the above method,
since disassembling a function is independent of the concrete module
object and hence can be done for shared decoded modules.

R=clemensh@chromium.org
BUG=v8:6847

Change-Id: I5abea2a1381a9b8d3717a55d0b2b937dfbbafefd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1809359
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63860}

This is a first step towards being able to share the same script for
multiple {WasmModuleObject} objects. In general it should be possible
for the inspector to debug (i.e. disassemble, set breakpoints) multiple
modules if they all have the same URL (and the same wire bytes). These
are the same conditions under which we can canonicalize the modules to
be based on the same underlying {NativeModule} as well. Hence it makes
sense to establish a link from {Script} to {NativeModule} in this CL.

Subsequent CLs will eventually deprecate the {wasm_module_object} field.

R=clemensh@chromium.org
BUG=v8:6847

Change-Id: I5cfb617e18d9b06682e6437b2a2146ea5665c1c6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807371
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63859}

This hopefully fix the regression test from c693e005

Bug: v8:1004766
Change-Id: If3c554070af6b795e4b3f99cd592a62453028874
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1809363Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Victor Gomes <victorgomes@google.com>
Cr-Commit-Position: refs/heads/master@{#63858}

This is an unmodified reland of
9febc505. Nosnap bots do not block
LKGR any more: https://crbug.com/v8/9737#c10.

Original change's description:
> Reland "Remove all custom CopyCharsUnsigned implementations"
>
> This is a reland of 5d8c4890
>
> Original change's description:
> > Remove all custom CopyCharsUnsigned implementations
> >
> > It's unclear whether the custom implementation have any advantage over
> > the standard library one's.
> > Since we update our toolchain and standard library regularly, it might
> > well be the case that the custom implementations are slower by now.
> >
> > Thus this CL removes all {CopyCharsUnsigned} implementations and
> > implements {CopyChars} generically using {std::copy_n}.
> >
> > Note that this does not touch the {MemMove} and {MemCopy} functions
> > yet, as we have seen regressions when trying to remove them before
> > (https://crbug.com/v8/8675#c5).
> >
> > R=leszeks@chromium.org
> >
> > Bug: v8:9396
> > Change-Id: I97a183afebcccd2fbb567bdba02e827331475608
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1800577
> > Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> > Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#63808}
>
> Bug: v8:9396
> Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
> Change-Id: I9cd754ebe6b802bb4aabd6d2a448de41da040874
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807357
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63823}

TBR=leszeks@chromium.org

Bug: v8:9396
Change-Id: I793524d76b8b9c93d2a98c73e8d72967880fe1cf
Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1809362
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63857}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/3bf1aad..aae0a7b

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/b19a360..b4e53c4

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/2c210a4..6f9a023

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

Change-Id: I397f67e56c63bf89744a6d12729cb017023a8acc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1809568Reviewed-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@{#63856}

ArrayBuffer tracking has landed, turning on GrowMemory for Shared
WebAssembly.memory on by default. Enable all variants of tests based
on the new implementation.

Bug: v8:8564, v8:9221, v8:8832
Change-Id: I0ff8688636303896450b788b2ff5a7268d386050
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1808106
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63855}

This reverts commits 9febc505
(along with followup commit 60624b56).

Reason for revert: Breaks win32 nosnap shared, blocking lkgr & roll:
https://ci.chromium.org/p/v8/builders/ci/V8%20Win32%20-%20nosnap%20-%20shared/35145

nosnap bots may be deprecated, but as long as they're in LKGR
we need to mind them.

Original change's description:
> Reland "Remove all custom CopyCharsUnsigned implementations"
>
> This is a reland of 5d8c4890
>
> Original change's description:
> > Remove all custom CopyCharsUnsigned implementations
> >
> > It's unclear whether the custom implementation have any advantage over
> > the standard library one's.
> > Since we update our toolchain and standard library regularly, it might
> > well be the case that the custom implementations are slower by now.
> >
> > Thus this CL removes all {CopyCharsUnsigned} implementations and
> > implements {CopyChars} generically using {std::copy_n}.
> >
> > Note that this does not touch the {MemMove} and {MemCopy} functions
> > yet, as we have seen regressions when trying to remove them before
> > (https://crbug.com/v8/8675#c5).
> >
> > R=leszeks@chromium.org
> >
> > Bug: v8:9396
> > Change-Id: I97a183afebcccd2fbb567bdba02e827331475608
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1800577
> > Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> > Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#63808}
>
> Bug: v8:9396
> Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
> Change-Id: I9cd754ebe6b802bb4aabd6d2a448de41da040874
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807357
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#63823}

TBR=leszeks@chromium.org,clemensh@chromium.org

Change-Id: Ic53ab2293d5dc7722a1121d1aa1159328a6ed8f5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9396
Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1808035Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63854}

NOTRY=true

Bug: v8:7834
Change-Id: I84bd68dd6e94a882a1c20075b9b23ba08dab4136
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1801257
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63853}

Runtime_CreateRegExpLiteral pretends to handle the case where we
already have a boilerplate but the code just passes an empty handle
to JSRegExp::Copy. This CL replaces the code with a CHECK that the
boilerplate doesn't exist.

A few mostly cosmetic changes along the way.

Change-Id: I856c77c1cdf58f09e920b773b66b037c5178edc7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1809357Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63852}

Bug: v8:8976
Change-Id: Iede3b662188392303949edf2a9f0c585976695ab
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1806100
Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63851}

Fix m(ax|in)imumFractionDigits of Intl.NumberFormat
resolvedOptions are set to 0. For example, currency
instance for CPY or KRW.

Bug: chromium:1003748
Change-Id: Ia1963d8d070b066bd5afa61f8c4716a21450af05
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807742Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63850}

The promise file is too big so I am splitting it in several CLs.
This is the first one.

TNodified:
 * AllocateAndInitJSPromise (three versions)
 * PerformPromiseThen
 * AllocateJSPromise

Bug: v8:6949
Change-Id: I57ae8de3f929c00a9127ea4be51ffe7703b44959
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807370
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63849}

Bug: v8:6949, v8:9396
Change-Id: I035a00f61077e49377c9cd39ae1b216a80c98e6b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1803615Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63848}

This moves PointerToSeqStringData from CSA to IntlBuiltinsAssembler
since that the only place it's used and converts a few Node*s to TNodes.

Bug: v8:6949, v8:9396
Change-Id: I2511c9f807fa0bc3101dd531f6724a170fed6bd9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807372
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63847}

One Node* remains since it is crashing when TNodified since it
has the empty Context. When this happens, it means the Context
might not be needed. In this case it's hard to see if that's the
case since it is propagated all over the place. Created a TODO
so we can solve it later, when TNodification is more complete.

Bug: v8:6949
Change-Id: I7db8c507689e30779f102a8272e1b13ecdc3e5e9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807274Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63846}

BUG=v8:6949,v8:9396

Change-Id: Icd65e16f6b5b41ad56d1b8767a73e8ca15d05b74
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807365
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63845}

Bug: v8:9713
Change-Id: I80b8f72ce4617b314f6c4991297a6464f67cbbec
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807364Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63844}

Bug: v8:6949
Change-Id: Ia45fe97ff67cd32f5d3e94d93b270dc3fef04244
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1805649
Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63843}

Port 1dd791fc

Original Commit Message:

    Uses templates to dispath the allocation flag statically.

Change-Id: I1d6a0f2c6ca04ac0f03afe392584e9f1e8dcfb9a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1806680
Auto-Submit: Mu Tao <pamilty@gmail.com>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63842}

- Makes accessor and iteration methods on Arguments and derived
  classes const.

Bug: v8:9429,v8:9396
Change-Id: I47b3d95ab72e689327a0d7b6a36a08b4e63f6d95
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1803336Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63841}

Bug: v8:9717
Change-Id: I0d99cb8f8dedd22dae9f78b49a097e3dcbba02bb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807368Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63840}

Bug: v8:9463
Change-Id: Ie36fc1b04b81dd091c4526123bee50d6b22d6917
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807044
Commit-Queue: Joshua Litt <joshualitt@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63839}

This allows to remove special casing for the {count == 0} case, which
was needed because {memmove} does not accept {nullptr} arguments even
if the {count} is zero.

R=leszeks@chromium.org

Bug: v8:9396
Change-Id: Iaef3cdbbffa74c2ba1c4e4501dafd943282cbcd9
Cq-Include-Trybots: luci.v8.try:v8_linux64_ubsan_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807366Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63838}

The new indicator behaves like verbose without
printing the names of tests that passed. Also
a new option (--ci-test-completion=/path) was
added to represent a file where we can collect
test completion messages.

Bug: v8:9146
Change-Id: I0f1bbef4036a3019b60b094687b734d3d33a5915
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1806916Reviewed-by: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63837}

The element segment encoding in the bulk memory proposal changed
recently. With this CL the V8 implementation gets up to date again.

R=thibaudm@chromium.org

Bug: v8:9658
Change-Id: I4f45d04369400356a6f3aaed9570c7870f5f97bd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1778022Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63836}

For unknown reasons, WasmInterpreterInternals was a zone object. However
WasmInterpreterInternals indirectly owns a global handle and a
unique_ptr, both for the interpreter stack. As a zone object,
WasmInterpreterInternals is never destructed, and therefore never frees
the unique_ptr. With this CL I make WasmInterpreterInternals a normal
object and allocate it into a unique_ptr, so that it gets destructed
properly.

R=mstarzinger@chromium.org

Bug: chromium:1000610
Change-Id: Ie08c5627393a434521f5c32702bf9945db2c7811
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807361Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63835}

Bug: v8:6949
Change-Id: I25d2247f149b296157cb422342cb7c218f724496
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807363Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63834}

Change-Id: Ie233f093377bcdbab95a2f34b6c609a651f9db62
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1787980
Auto-Submit: Joshua Litt <joshualitt@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63833}

This will give us much more test coverage and fuzzer coverage.

R=mstarzinger@chromium.org

Bug: v8:9477
Change-Id: Iad76c2b5b8c7a29b4168bbefa38bac7d92a30599
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807367Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63832}

The {CountTrailingZeros} function is at least on one hot code path,
and there it causes significant overhead. With this CL I just call the
base::bit:: version of {CountTrailingZeros} directly. This allows the
compiler to compile it to a single hardware instruction.

R=v8-arm-ports@googlegroups.com

Bug: v8:9396
Change-Id: I81eccc5fce9b9856d41c503bd1e4a07287eb6e1e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1803648
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Martyn Capewell <martyn.capewell@arm.com>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63831}

TNodifies most of ic-accessor-assember. Most of the remaining Node* are
because of the Parameters.

Bug: v8:6949, v8:9396
Change-Id: Ife9fd96c5e46dee02fdc60e5825562d7ae89f8f9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1803634Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63830}

Adding a %SimulateNewspaceFull runtime function speeds up this test
from 7m21s to 0.3s (on arm.optdebug with --jitless).
Bonus content:
- speed up mjsunit/md5 by 23x (5m25s -> 7.5s)
- speed up mjsunit/string-replace-gc by 8x (1m37s -> 12s)

Bug: v8:9700, v8:9396
Change-Id: Id00d0b83b51192edf1d5493b49b79b5d76e78087
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807355Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63829}

- There was no use of DisallowDeferredHandleDereference, so remove the
  corresponding assertion scope and related code.
- Make DeferredHandleScope::Detach return a unique_ptr rather than a
  raw pointer for clarity.
- Store DeferredHandles in compilation info as unique_ptr rather than
  shared_ptr, as it's never shared.
- Remove some unused methods.

Change-Id: I8327399fd291eba782820dd7a62c3bbdffedac4d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1805645
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63828}