Clang crashes in this configuration.  See https://crbug.com/942347 for context.

BUG=chromium:942347
R=machenbach
CC=thakis

Change-Id: Iffcad9556ed92ecfbd4ee062a5ed7f8c8cac1914
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1524639
Auto-Submit: Thomas Anderson <thomasanderson@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60258}

This reverts commit ba00d8b7.

Reason for revert: Breaks arm64 bots (native & simulator) - https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20arm64%20-%20sim/17252

Original change's description:
> Reland: [inspector] Allow limiting the total size of collected scripts.
> 
> Introduces the setMaxCollectedScriptsSize Debugger protocol method.
> If the max size is set, the debugger will hold collected (not referenced by other v8 heap objects)
> scripts up to the specified total size of their sources.
> 
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1518556
> > Commit-Queue: Alexei Filippov <alph@chromium.org>
> > Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
> 
> BUG=v8:8988
> TBR=dgozman@chromium.org
> 
> Change-Id: I6f7da07c4c9ae35b5252aabddb98b693ec77b4e8
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1524662
> Reviewed-by: Alexei Filippov <alph@chromium.org>
> Commit-Queue: Alexei Filippov <alph@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60255}

TBR=dgozman@chromium.org,alph@chromium.org

Change-Id: I04e3616d46620f33d0ec349fb7b0c393f276dc0c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8988
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1524484Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60257}

This CL allows for either of 'minimum' or 'initial' for MemoryDescriptor
and TableDescriptor. It also adds a flag for the reflection features.

R=binji@chromium.org,adamk@chromium.org
Bug=v8:7742

Change-Id: Icfd4825f63e1eb784a39d10f740d55e81489eba7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1485243
Commit-Queue: Aseem Garg <aseemgarg@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60256}

Introduces the setMaxCollectedScriptsSize Debugger protocol method.
If the max size is set, the debugger will hold collected (not referenced by other v8 heap objects)
scripts up to the specified total size of their sources.

> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1518556
> Commit-Queue: Alexei Filippov <alph@chromium.org>
> Reviewed-by: Dmitry Gozman <dgozman@chromium.org>

BUG=v8:8988
TBR=dgozman@chromium.org

Change-Id: I6f7da07c4c9ae35b5252aabddb98b693ec77b4e8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1524662Reviewed-by: Alexei Filippov <alph@chromium.org>
Commit-Queue: Alexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60255}

Bug: v8:7226
Change-Id: Ia2ed97b193e77a016aa10e7abd50ce59ea38f7a0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1518558
Commit-Queue: Ben Smith <binji@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60254}

This CL only provides the implementation of memory.{init,copy,fill} and
data.drop.

Bug: v8:8965
Change-Id: I439f2520bfee8f147e4b0d1d31f954aaad2e14ad
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1510575
Commit-Queue: Ben Smith <binji@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60253}

R=binji@chromium.org,adamk@chromium.org
Bug=v8:7742

Change-Id: I5b9a614dd0c8b028d756cbd401c803de4cb9437f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1513159
Commit-Queue: Aseem Garg <aseemgarg@chromium.org>
Reviewed-by: Ben Smith <binji@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60252}

Rolling v8/test/wasm-js/data: https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+log/dae979a..a2b5691

Editorial: Extract an "asynchronously instantiate a WebAssembly module" algorithm. (Daniel Ehrenberg)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/a2b5691

Editorial: Extract an "instantiate the core of a WebAssembly module" algorithm. (Daniel Ehrenberg)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/4ecc1b1

Editorial: Remove an unnecessary local variable in "create an instance object". (Daniel Ehrenberg)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/e4bea69

Editorial: Extract a "create an instance object" algorithm. (Daniel Ehrenberg)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/0555abc

Editorial: Extract a "read the imports" algorithm. (Daniel Ehrenberg)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/e738239

Editorial: Stop breaking lists to insert a note. (Ms2ger)
https://chromium.googlesource.com/external/github.com/WebAssembly/spec/+/e692daa

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

Change-Id: If5d941a44b9c37d5ad2f2f76e3a726cefa9557fa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1525098Reviewed-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@{#60251}

This CL also changes the constructor for WasmTableObject so that the
maximum_length is set to undefined instead of a default value if there's
no maximum provided.

R=binji@chromium.org,adamk@chromium.org
Bug=v8:7742

Change-Id: I6310224e9997464bf69c198e2694a6cd76e01e8f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1513156
Commit-Queue: Aseem Garg <aseemgarg@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60250}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/2678ddc..77c810a

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/4457947..62f9eb0

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/2afe880..f8e2315

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/40c1942..1c2fa0f

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/8a36736..3dd606a

TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org

Change-Id: If25a10068d40afd68abab42534b8fbafc0834848
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1525097Reviewed-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@{#60249}

Consolidates all the work into a single TFS builtin (CreateHTML)
called by all these functions. Reduces the builtin size by
about half.

Change-Id: I92b2c7889f72db4c8c79d7ef0ce0e61036ab619e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1522727
Commit-Queue: Peter Wong <peter.wm.wong@gmail.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60248}

Bug: v8:8952
Change-Id: I099de2052941684d4ca714062a52c82ef0bb3850
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1516473
Commit-Queue: Matt Gardner <magardn@microsoft.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60247}

Fix original imlpementation to support occurrence in eval(), and unskip
tests.

BUG=v8:8523
r=gsathya@chromium.org, mathias@chromium.org, littledan@chromium.org

Change-Id: I80a3e8623357947c564a6cdf865eeff435b8e640
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1510792Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Caitlin Potter <caitp@igalia.com>
Cr-Commit-Position: refs/heads/master@{#60246}

Since the new Objects were introduced, we can no longer cast integers to
and Object pointer and call methods on them in gdb (due to how gdb's
expression evaluator deals with temporaries). So, we add a new helper
method to our gdbinit, "$job", which takes an address and returns an
Object that is now exists in real (stack) memory.

Bug: v8:8994
Change-Id: I760a007e7d2303e3a4b1fecb87e094fb9974e91e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1523329
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60245}

Change-Id: Ib9f423439f418be5ef15e2a65b9118f8f234cb5b
Bug: v8:8834
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1524201Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60244}

This should have no effect unless the embedder uses an old version
of the standard library with missing overloads of <math.h> functions,
which causes such functions to perform implicit conversion to double.
In such cases, the CL removes the implicit conversion.

Change-Id: Ib90a461c81b1f354f7acdf32df88257bff20aca8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1523549
Auto-Submit: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60243}

Compilation only stores whether an error has been found, but not the
exact error or it's location. This is generated by running a validation
pass once all wire bytes have been received.
This unifies error messages by removing one more location where we
generate compilation error messages, and makes it deterministic because
a) we always report the error in the first failing function, and
b) if names are present, the error message will always contain the
   function name.

R=titzer@chromium.org

Bug: chromium:926311, v8:8814
Change-Id: I79551b8bb73dcee503484de343a3ada60a6add4f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1521112
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60242}

Piggybacking of splitting heap setup, this change adds a shared
read-only heap and a flag to enable it.

Also makes CallOnce use std::function instead of a raw function
pointer so the CL can use lambdas with CallOnce.

Bug: v8:7464
Change-Id: I9a97fb1baa6badca39a7381de3fd9e01f5969340
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1518180Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Maciej Goszczycki <goszczycki@google.com>
Cr-Commit-Position: refs/heads/master@{#60241}

Main changes:
- Rename ProcessedFeedback to ElementAccessFeedback and introduce a base class
  with the old name ProcessedFeedback.
- Introduce another kind of ProcessedFeedback, namely GlobalAccessFeedback for
  the LoadGlobal/StoreGlobal IC. It's either a PropertyCell or a script context
  slot.
- Produce such processed feedback in the serializer, when visiting LdaGlobal and
  similar bytecodes.
- Consume it, and disallow heap access, in JSNativeContextSpecialization's
  ReduceJSLoadGlobal and ReduceJSStoreGlobal (for --concurrent-inlining).

Minor changes:
- Introduce a FeedbackSource class (pair of FeedbackVector and FeedbackSlot)
  that is used as the key of the processed feedback hash table. We already have
  two similar classes, FeedbackNexus and VectorSlotPair, but both are unsuitable
  for technical reasons (e.g. FeedbackNexus construction accesses the heap).
  Eventually we should remove VectorSlotPair.
- Processed feedback is now returned as a pointer, which is nullptr if the
  original feedback wasn't interesting (e.g. megamorphic).

The title says "partially" because the CL doesn't yet take into account named
accesses where the receiver happens to be the global proxy.

Bug: v8:7790
Change-Id: I4404d98636b91a8f2d5667115944bae4773a4770
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1518184
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60240}

R=mstarzinger@chromium.org

Bug: v8:7581
Change-Id: Id8b9c3596eb6caf5ee7048a87a676a85dba0c5dc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1520711
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60239}

This simplifies some code by removing unneeded checks and early
returns. I just accidentally hit got one more instance of this, and I
think we should get rid of the requirement of only decoding LEBs that
start before the end pointer of the decoder.

R=titzer@chromium.org

Change-Id: I608c5c1c292088ac14fac20b7cb030f39c165bd7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1523550Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60238}

This is a minimalistic script usable for creating packages of gcmole
together with the corresponding Clang. Such packages are used on V8's
infrastructure.

R=machenbach@chromium.org
BUG=v8:8813

Change-Id: Iee3594a3acdc7a4e5b5d5628e5557725d27d9ced
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1523068
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60237}

This reverts commit 57bc36aa.

Reason for revert: Frame may not be allowed accesses to half size location. Reverting as a precautionary measure.

Original change's description:
> [ptr-compr] Correct size for tagged values in GetByteWidth
> 
> Bug: v8:8477
> Change-Id: Id565bb8a4d420b715e3e89325786de699e30b22c
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1517883
> Reviewed-by: Michael Stanton <mvstanton@chromium.org>
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60197}

TBR=mvstanton@chromium.org,solanes@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: v8:8477
Change-Id: Id0482074972194d8e8c531e0ea06da762e0262b7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1523347
Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60236}

It is a design decision of pointer compression to allow unaligned pointers,
so disable this check in UBSan.

Bug: v8:7703
Change-Id: I3fab34e77ad755cdef3cd385a3615e3d0e350c16
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1523346
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60235}

Introduced a CHECK instead and details about the invariant it relies on.

R=neis@chromium.org, rmcilroy@chromium.org

Change-Id: I568fc6d737c6bf70bd7aabf47df22651e3fcf8fc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1517882Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60234}

We want to get rid of the atomicops library, hence switch all uses to
std::atomic.

R=mlippautz@chromium.org

Bug: v8:8926, v8:8834

Cq-Include-Trybots: luci.v8.try:v8_linux64_tsan_rel
Change-Id: I9b7cca83703775b1ddee4f16f51b7ad6535bb67c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1520717Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60233}

Since StreamedSource takes ownership of the ExternalSourceStream
passed into it, it should take it by unique_ptr rather than raw
pointer to signal this transfer of ownership. The old constructor
is now deprecated.

Change-Id: I24681926c2f3141f7dd3664f72019a4c6deabfd7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1520713
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60232}

This reverts commit 589d1a6b.

Reason for revert: Breaking UBSan - https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20UBSan/5219

Original change's description:
> [ptr-compr][x64] Temporarily enable pointer compression on x64
> 
> ... and make sure that the x64 ptr-compr bots proceed testing V8 without
> pointer compression in order to keep testing the full pointer mode.
> 
> Bug: v8:7703
> Change-Id: Iee725deda813425a6f0722948b54976154f50909
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1497139
> Reviewed-by: Michael Hablich <hablich@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60230}

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

Change-Id: I5a9f04acba1ef23ae944d97a029ea018808c7fcb
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7703
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1522991Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60231}

... and make sure that the x64 ptr-compr bots proceed testing V8 without
pointer compression in order to keep testing the full pointer mode.

Bug: v8:7703
Change-Id: Iee725deda813425a6f0722948b54976154f50909
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1497139Reviewed-by: Michael Hablich <hablich@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60230}

This reverts commit 5a61630d.

Reason for revert: Breaking gc stress bot - https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20gc%20stress/21477

Original change's description:
> [inspector] Allow limiting the total size of collected scripts.
> 
> Introduces the setMaxCollectedScriptsSize Debugger protocol method.
> If the max size is set, the debugger will hold collected (not referenced by other v8 heap objects)
> scripts up to the specified total size of their sources.
> 
> BUG=v8:8988
> 
> Change-Id: I94d52866494102add91ca2d569a2044b08c9c593
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1518556
> Commit-Queue: Alexei Filippov <alph@chromium.org>
> Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60227}

TBR=dgozman@chromium.org,alph@chromium.org,kozyatinskiy@chromium.org

Change-Id: I26de645e425f0f7d5aa8212eeefda76dad695b78
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8988
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1522988Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60229}

TBR=sergiyb@chromium.org

Bug: chromium:934964
Change-Id: I4005a0422df68b357e6b34313d31f421c27cc95b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1513612
Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org>
Reviewed-by: Sergiy Belozorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60228}

Introduces the setMaxCollectedScriptsSize Debugger protocol method.
If the max size is set, the debugger will hold collected (not referenced by other v8 heap objects)
scripts up to the specified total size of their sources.

BUG=v8:8988

Change-Id: I94d52866494102add91ca2d569a2044b08c9c593
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1518556
Commit-Queue: Alexei Filippov <alph@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60227}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/96d6f98..2678ddc

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/794f2d1..4457947

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/967fadd..2afe880

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/8b94108..40c1942

Rolling v8/third_party/icu: https://chromium.googlesource.com/chromium/deps/icu/+log/2fd941d..8c67416

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/ff65c25..8a36736

TBR=machenbach@chromium.org,hablich@chromium.org,sergiyb@chromium.org

Change-Id: I5032fbb6066a8e4891caf0b1201090f1d56e6ac7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1522726Reviewed-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@{#60226}

Change-Id: I270de4fa2970c9e33600453aaecc1c786701dcc3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1521326Reviewed-by: Alexei Filippov <alph@chromium.org>
Commit-Queue: Johannes Henkel <johannes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60225}

Splits heap setup to enable a single setup method on read-only heap.
This simplifies shared read-only heap initialization code.

Bug: v8:7464
Change-Id: If4f61e1fbc4780e19dcda2b2d50050b2c204b0e3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1518179
Commit-Queue: Maciej Goszczycki <goszczycki@google.com>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60224}

Change-Id: I9bd7c97dd0b36935bd1fb76cd2cbc83a1b28cdfb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1521223
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Auto-Submit: Junliang Yan <jyan@ca.ibm.com>
Reviewed-by: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#60223}

This enables things like simple DCHECKs in functions that do not have
access to isolate or heap.

Change-Id: I7962c28f0c6a4928ee880f1373501f29e45ae1f8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1517886Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Dan Elphick <delphick@chromium.org>
Commit-Queue: Maciej Goszczycki <goszczycki@google.com>
Cr-Commit-Position: refs/heads/master@{#60222}

R=yangguo@chromium.org

Bug: v8:8742
Change-Id: I307097021893617ed5178f1e967f9360a55cd929
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1520710
Auto-Submit: Simon Zünd <szuend@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60221}

Bug: v8:8977
Change-Id: I3bf6606d9db2369f5d82c71c5f58f6cf0c34bc0d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1520712
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60220}

JSArrayIterator, PreparseData

Bug: v8:8952
Change-Id: I0a58402012f6fd5ded0eab92f7e28e3523342650
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1516474Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#60219}