For this, all Torque stub-linkage builtins use TFC instead of TFS,
with a custom descriptor added to interface-descriptors.h

To avoid having complex logic in the generated code, the new class
TorqueInterfaceDescriptor contains the logic to create a
CallInterfaceDescriptor from a signature consisting of TNode types.

As an example and test, this CL ports StringCharAt to Torque.

Bug: v8:7793
Change-Id: I8339d2ad6e4f908ebdc3b8d30244e4bcbd974f21
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1798427Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64148}

Bug: v8:9812
Change-Id: I222b9c3c8c87e83b61009c84e2ab0499187308e0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1842623Reviewed-by: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64147}

Change-Id: Ibbcd91115c21e3513602a039ebb68a0107a4022f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1829172
Commit-Queue: Irina Yatsenko <irinayat@microsoft.com>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64146}

Bug: chromium:1005073
Change-Id: I300fd4ef272c0b69dade195048c11a828ac46203
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1845411
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64145}

With the smi-corrupting decompression approach we don't have to sign
extend Smis anymore and therefore we can switch to zero extending
approach by moving the isolate root to the beginning of the reserved
4Gb region.

Bug: v8:9706
Change-Id: Icd6008fa87d0924519b574fdec445976f742e306
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1835548
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64144}

Bug: v8:9684
Change-Id: I6988579693788d5bbc878c63269fe7c1bec65831
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1845223
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64143}

Just mechanical conversion to remove boilerplate code. When .tq and .h
files didn't agree on what a field is named, I used the name from the .h
file. In a couple of cases the generated accessor became slightly more
specific (HeapObject instead of Object), and I had to update the code
that uses those accessors accordingly.

Change-Id: Ie3af1590e3889887b167c9d045b07860b01f7d15
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1776479Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#64142}

Disable because it's not yet supported on BE

Bug: v8:9330
Change-Id: Ia850801d410d3eeaccf9933dd2669f6077e2919c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1834904Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#64141}

TypedSlotSet is only recorded for code pages. Code pages are not swept
concurrently to the application, so pre-freeing is not needed for typed
slot sets anymore.

Also replaces the manually allocated buffer with a regular std::vector.

Bug: v8:9454
Change-Id: I901851ad8b525c1653c9818e6599308319aeade2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1844773Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64140}

This reverts commit 9b1e174f.

Reason for revert: Breaks arm64 sim debug build - https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20arm64%20-%20sim%20-%20debug/17609

Original change's description:
> [ptr-compr] Storing a Tagged value stores the lower 32 bits
> 
> This CL changes the Tagged stores when pointer compression is enabled.
> It shouldn't affect anything for the time being since if we have pointer
> compression enabled, we are going to be storing Compressed values. Later,
> we will eliminate the Compressed representation and that it's where it
> will come into effect.
> 
> The Arm64 side of the CL looks bigger since we eliminated the opcode in
> https://chromium-review.googlesource.com/c/v8/v8/+/1803345.
> 
> Bug: v8:7703
> Change-Id: Ic4afbff9646b5d058adb9619b20ccccb3f5aed45
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1822044
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#64133}

TBR=neis@chromium.org,jgruber@chromium.org,solanes@chromium.org

Change-Id: I901f0802b40144492594f293657f7f2b58dc32cf
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7703
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1845217Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64139}

It was disabled because it didn't use to work, but it does now, see bugs.

Bug: chromium:803591, v8:9736
Change-Id: I53a04199f001b436bd5a247b51cd7c25e3a6e990
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1844776
Commit-Queue: Hans Wennborg <hans@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Auto-Submit: Hans Wennborg <hans@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64138}

Some of the methods in {WasmCodeAllocator} can be called either without
holding the lock, or while already holding it. In order to support both
situations, we used a {RecursiveMutex} so far.
This CL refactors this to be a simple {Mutex} again, and passes a
{WasmCodeAllocator::OptionalLock} object which stores whether the lock
is already held or not.
Note that getting the lock twice fails immediately in debug builds,
while forgetting to get the lock might only fail on TSan.

The alternative would be to duplicate all methods, having one variant
that expects that the lock is held and one that assume that it's
unlocked. It would be multiple methods though to duplicate across both
{NativeModule} and {WasmCodeAllocator}, hence I went for the
{OptionalLock} instead.

Bug: v8:9477

R=mstarzinger@chromium.org

Change-Id: I4e32286cdb93385ac655d408191b330efdd7ad66
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1825338
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64137}

Found while testing with asan.

Change-Id: I82529422770653535aae148a4acc6089c5a4fee7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1844786Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Martyn Capewell <martyn.capewell@arm.com>
Cr-Commit-Position: refs/heads/master@{#64136}

So Word32Equal(YYY, CompressedHeapConstant(XXX)) is now generated as
  cmpl [r13+0xXXX], rYYY

instead of
  movq rXXX,[r13+0xXXX]
  cmpl rYYY, rXXX

Bug: v8:8948
Change-Id: I346c3e9bdb17ae5443e9e488da0eefa07e391b33
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1841353Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64135}

R=mstarzinger@chromium.org

Bug: v8:9492
Change-Id: Ie404eb6cb07ea033a10d29dd1b9aba6cb1f03b69
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1826663
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64134}

This CL changes the Tagged stores when pointer compression is enabled.
It shouldn't affect anything for the time being since if we have pointer
compression enabled, we are going to be storing Compressed values. Later,
we will eliminate the Compressed representation and that it's where it
will come into effect.

The Arm64 side of the CL looks bigger since we eliminated the opcode in
https://chromium-review.googlesource.com/c/v8/v8/+/1803345.

Bug: v8:7703
Change-Id: Ic4afbff9646b5d058adb9619b20ccccb3f5aed45
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1822044Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64133}

... and make sure that the arm64 ptr-compr bots proceed testing V8 without
pointer compression in order to keep testing the other config.

Bug: v8:7703
Change-Id: I0017345273d5328d95a338064dd80b44974c1c53
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1844780Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64132}

This CL fixes the overlap check by using {<=} instead of {<}. This
allows us to always use {std::copy_n}, which should fall back to
{memcpy} internally (instead of the potentially slower {memmove} we
were using before).
This might also fix the regressions seen mostly on atom CPUs.

R=leszeks@chromium.org

Bug: chromium:1006157
Change-Id: Ib61048d65e99a9e7edac5ed894ceaf9e26ad4409
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1844781Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64131}

Removes CodeStubAssembler::GotoIfDebugExecutionModeChecksSideEffects and
associated test as well as the PerformSideEffectCheckForObject runtime
function.

Bug: v8:9396
Change-Id: Id7748be8fbf1d633f759fef8751ddca13a21748c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1824937Reviewed-by: Simon Zünd <szuend@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64130}

The {GetNearRuntimeStubEntry} and {GetNearCallTargetForFunction}
functions need to find the code space that contains the current
function. This lookup requires a lock and is non-trivial. The repeated
lookup caused severe regressions.

This CL introduces a {JumpTablesRef} struct which holds information
about the jump tables to use. It can be looked up once and then used
for a whole function or even several functions within the same code
space (in {NativeModule::AddCompiledCode} which adds a whole vector of
compilation results).

This fixes the regressions.

R=ahaas@chromium.org

Bug: chromium:1004262, v8:9477
Change-Id: I50bd8327a131e3bee79d86b6d7e867a506959312
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1840153
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64129}

Placing these tests in anonymous namespaces, is the suggested fix
according to the GCC documentation.

The GCC documentation states: "If a type A depends on a type B with no or
 internal linkage, defining it in multiple translation units would be an
ODR violation because the meaning of B is different in each translation unit.
If A only appears in a single translation unit, the best way to silence the
warning is to give it internal linkage by putting it in an anonymous namespace as well."

Change-Id: I69a1e9b5f1789e9a7a62c762cd499809a72e0ea5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1836255
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64128}

Because of a GCC bug we needed to use a functor instead of a constexpr
function. Since we do not support gcc before version 5 any more, this
can be cleaned up now.

R=jkummerow@chromium.org

Bug: v8:9396
Change-Id: I848c5a25e1d5fa44a1497b06826f9a59b93ed695
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1835543Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64127}

This CL removes the StoreBuffer and inserts slots into the
RememberedSet directly from within the RecordWrite builtin. Only calls
into C code when either the SlotSet-array or the bucket is not
allocated. This avoids filling the store buffer up with duplicates or
due to a write-heavy workload and then blocking the main thread on
store buffer processing.

The first CL (https://crrev.com/c/1815241) got reverted, because
mksnapshot was using a different size for SlotSet than the final
binary on ARM. This is fixed now, SlotSet has a standard layout.

Bug: v8:9454
Change-Id: I881641f4ee08a8b42c36fdca8733138b908096bd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1842452Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64126}

Fixes spurious DCHECK triggering due to bug introduced in
https://chromium-review.googlesource.com/c/v8/v8/+/1836258.

Bug: chromium:1011596
Change-Id: Ia3b1eb25d326e465b3239f191aad11d90a2e56a8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1844777Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64125}

We've gathered sufficient data, so the use counter can now be removed
again.

The use counter was originally added here:

- V8 CL: https://chromium-review.googlesource.com/c/v8/v8/+/1718145
- Chromium CL: https://chromium-review.googlesource.com/c/chromium/src/+/1718367

The Chromium plumbing was removed here:
https://chromium-review.googlesource.com/c/chromium/src/+/1839851

BUG=v8:9551

Change-Id: I829a0fe34d9ebade1403cb4d1c0b9c997f125074
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1844774Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64124}

This adds a fake toolchain for pointer compression, used for
correctness fuzzing. The toolchain enables us to have an extra build
with inverse pointer-compression defaults side-by-side.

The extra build is used similarly to existing x64/x86 comparisons,
except that we now compare builds with different compile-time flags.

Change-Id: I75491371262204b86eaa006ca8d04848f49121ac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1829275Reviewed-by: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64123}

The entries test262_variants and test262 are now equal after previous changes.
This switches all to test262 to prepare removing the former.

Bug: v8:9791
Change-Id: I677ea36798556e1aeed8bc11c3272804141e1eb8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1835539Reviewed-by: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64122}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/f60b4e5..359f95f

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

Change-Id: I89fce2878ea8bfa1fa5803220bc9446e17767f55
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1844552Reviewed-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@{#64121}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/cf8d1d9..f60b4e5

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/d696f20..c9256e1

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

Change-Id: I8d3ee4364b25a6176865dd8a0d227465a9e6da17
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1843093Reviewed-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@{#64120}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/90168ea..cf8d1d9

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/8305659..ddbd321

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/f3c5fef..d696f20

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

Change-Id: Ibfd3dc3fdeb38aec3ab5bdcad4d58163d2ad66c6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1842077Reviewed-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@{#64119}

Bug: v8:9728
Change-Id: Ie769ae0431b7924a4b8f8858681d57e92c00f4b3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1808400Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64118}

We reuse PACKED_OP_LIST to generate *pd instructions. Introduce a new pd
base method, similar to ps and vps.

Bug: v8:9396
Change-Id: Id9d81c22c9110935484fd929ef7bf5cc20e9ae7e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1834767Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64117}

Change-Id: I0751c1761a2d07dd89d831ca6370ae01bc569b6a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1841351
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64116}

... in order to improve performance of decompression code on C++ side
(because computation of isolate root from isolate pointer becomes a trivial
reinterpret cast) and measure the impact separately from other ptr-compr
changes.

Bug: v8:9353
Change-Id: I36906cef2968355411ee944d97625ecd2652646b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1835550Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64115}

Now that sweeping uses its own RememberedSet, pre-freeing of empty
buckets is not necessary anymore. Mutator inserts into a different
remembered set, than the sweeper removes slots from.

Bug: v8:9454
Change-Id: I65d046926aa82aeb9eca7694e6a7eff1331d7e01
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1835547
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64114}

Port 7177d87f

Original Commit Message:

    Reorders the Smi check and the empty OptimizationMarker check as the
    latter implies the first and means there is now just a single comparison
    on the fast path.

R=delphick@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: I4129e8d710d25fb1df02742816ab3b56430a7523
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1841611Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#64113}

It was on JSGlobalProxyRef but in reality the property cells exist in
the global object, not in the global proxy.

Bug: v8:7790
Change-Id: Ia7bd5731c730db09602a1aec61b64b1355abf6a0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1841352
Commit-Queue: Georg Neis <neis@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Auto-Submit: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64112}

This is a reland of b271ea3c

The failing arm64 disasm poison test was fixed.

Original change's description:
> [ptr-compr] Disable double fields unboxing
>
> Double field unboxing optimization is incompatible with pointer compression so
> we land this CL before enabling pointer compression in order to separate memory
> and performance regressions caused by disabled double field unboxing from
> pointer compression change.
>
> Bug: v8:9799
> Change-Id: Ic8118356496a3f351344215b409f9722de6c9355
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1835546
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#64089}

Tbr: verwaest@chromium.org
Cq-Include-Trybots: luci.v8.try:v8_linux_arm64_dbg
Bug: v8:9799
Change-Id: Ib7c126d70859537c3d0bce54a49f23909c14a6ab
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1840411
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64111}

Reorders the Smi check and the empty OptimizationMarker check as the
latter implies the first and means there is now just a single comparison
on the fast path.

Bug: v8:9771
Change-Id: Ibba1f322944b17186842983e227684b301ed5f31
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1833683
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64110}

A slow dcheck can verify that hints are equal for the same
SharedFunctionInfo+FeedbackVector combo.

Bug: v8:7790
Change-Id: I43dcacf19c857770b609d13c310835a873c814fe
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1835952
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64109}