This reverts commit 63ecddc8.

Reason for revert:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20internal%20snapshot/builds/14773

Original change's description:
> [runtime] Remove the construct_stub field of the SFI
> 
> Don't dispatch based on the construct_stub field anymore. Rather than
> read it out and jump to the construct stub, we can switch on the
> builtin_id.
> 
> Builtins will always have builtin_id as a Smi, so this signals we need
> to jump to JSBuiltinsConstructStub. The only exception is for uncompiled
> functions, which will have kCompileLazy as the builtin_id, but need to
> jump to the generic stub instead.
> 
> API function calls will have a FunctionTemplateInfo in the SFI
> function_data field, and need to go to the builtins stub as well.
> 
> The final case is everything else, which should go to the generic stub.
> 
> Bug: v8:7503
> Change-Id: I14790a5f9784dc0d940bf10a05f5310026e1d482
> Reviewed-on: https://chromium-review.googlesource.com/980941
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Commit-Queue: Peter Marshall <petermarshall@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52345}

TBR=petermarshall@chromium.org,leszeks@chromium.org,bmeurer@chromium.org

Change-Id: I2031913ab5a12018ad932f920792aa1f6faa5e22
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7503
Reviewed-on: https://chromium-review.googlesource.com/995293Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52346}

Don't dispatch based on the construct_stub field anymore. Rather than
read it out and jump to the construct stub, we can switch on the
builtin_id.

Builtins will always have builtin_id as a Smi, so this signals we need
to jump to JSBuiltinsConstructStub. The only exception is for uncompiled
functions, which will have kCompileLazy as the builtin_id, but need to
jump to the generic stub instead.

API function calls will have a FunctionTemplateInfo in the SFI
function_data field, and need to go to the builtins stub as well.

The final case is everything else, which should go to the generic stub.

Bug: v8:7503
Change-Id: I14790a5f9784dc0d940bf10a05f5310026e1d482
Reviewed-on: https://chromium-review.googlesource.com/980941Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52345}

This reverts commit 9a7e9cf2.

Reason for revert:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20cfi/builds/14341

Original change's description:
> Enable cfi-icall on the v8 CFI bots
> 
> BUG=v8:7164
> 
> Change-Id: I7522ba6ac2bde89c84bcd49bc116a432091a2938
> Reviewed-on: https://chromium-review.googlesource.com/990802
> Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
> Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52343}

TBR=machenbach@chromium.org,clemensh@chromium.org,vtsyrklevich@chromium.org

Change-Id: Id979a20d28445e05c6c2266614bb6ea1d6560ef6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7164
Reviewed-on: https://chromium-review.googlesource.com/995292Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52344}

BUG=v8:7164

Change-Id: I7522ba6ac2bde89c84bcd49bc116a432091a2938
Reviewed-on: https://chromium-review.googlesource.com/990802
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52343}

The tests are flaky at the moment.

CC=clemensh@chromium.org
R=machenbach@chromium.org

No-Try: true
Change-Id: Ifc56116ebbe44d92c726c973e2beb8a1ec996379
Reviewed-on: https://chromium-review.googlesource.com/995092Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52342}

Bug: v8:7584
Change-Id: I7443c28c74676ee1f27550674c8f712594e21cc7
Reviewed-on: https://chromium-review.googlesource.com/992314Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52341}

This CL allows builtin continuations to handle pending exceptions.
This implements exception handling for the promise constructor in
case of deoptimization.

Bug: v8:7584


Change-Id: Ib5df5eb6606abb3f9690f294397981858dbdbf25
Reviewed-on: https://chromium-review.googlesource.com/983912
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52340}

This patch teaches Runtime.callFunctionOn to run evals inside its
task. This is aligned with how Runtime.evaluate works.

R=kozy

Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I3189beebc9020703d2b2e23a7c828a2394d43910
Reviewed-on: https://chromium-review.googlesource.com/994070
Commit-Queue: Andrey Lushnikov <lushnikov@chromium.org>
Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52339}

This reverts commit dbdede01.

Reason for revert: Fails webkit_tests, blocks roll: https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064

Original change's description:
> Implement a new spec for timezone offset calculation
> 
> https://github.com/tc39/ecma262/pull/778 was recently merged
> to Ecma 262.
> 
> It changes the way to convert between "local time" and UTC in such
> a way that it'd work for all timezones whether or not there has
> been any change in the timezone offset of the standard time. For
> instance, Europe/Moscow and some parts of US state of Indiana have
> changed the standard (non-DST) timezone offset a few times. The
> previous spec assumes that the the standard timezone offset is
> constant, but the new spec take into account the offset change
> history.
> 
> In addition, it specifies a new way to calculate the timezone
> offset during a timezone transition (either in and
> out of DST or timezone offset shift).
> 
> During a negative transition (e.g.  fall backward / getting
> out of DST), repeated times are to be interpreted as if the
> offset before the transition is in effect.
> 
> During a positive transition (e.g. spring forward / getting
> into DST), skipped times are to be treated similarly. That
> is, they are to be interpreted as if the offset before the
> transition is in effect.
> 
> With icu-timezone-data, v8 is compliant to the new spec for the
> past and the future as well as now whether or not the standard
> timezone offset of a given timezone has changed over time
> (e.g. Europe/Moscow, Pacific/Apia). With icu-timezone-data,
> Australia/Lord_Howe (30 minute DST change) also works per spec.
> 
> Without icu-timezone-data, it works only for timezones of which
> the standard timezone offset is the same as the current offset
> (e.g. most North American timezones other than parts of Indiana)
> and of which the DST shift is an hour. For instance, it doesn't work
> for Europe/Moscow in 2010 when the standard timezone offset was
> +4h because the current (2018) standard timezone offset is +3h. Neither
> does it for Lord Howe in Australia with the DST shift of 0.5 hr.
> 
> This CL used to require one of the two ICU CLs below, but not
> any more.
> 
>   https://chromium-review.googlesource.com/c/chromium/deps/icu/+/572652
>   https://chromium-review.googlesource.com/851265  (a proposed CL to the
>   upstream ICU).
> 
> Bug: v8:3547,chromium:417640,v8:5714
> Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
> Change-Id: Ib162295da5bee31b2390bd0918157014aebd3e33
> Reviewed-on: https://chromium-review.googlesource.com/572148
> Commit-Queue: Jungshik Shin <jshin@chromium.org>
> Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52332}

TBR=adamk@chromium.org,littledan@chromium.org,mlippautz@chromium.org,jshin@chromium.org

Change-Id: I6b3bf4427c761b106280d565a3912cd8e25cf87e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:3547, chromium:417640, v8:5714
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/994192Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52338}

This reverts commit cd1dd34f.

Patchset 1 is the original CL that was reverted. Patchset 2 has the
fix.

TBR=bmeurer@chromium.org

Bug: v8:7611
Change-Id: I15291175ab894ef667c001e1b21b8b220e1f9b48
Reviewed-on: https://chromium-review.googlesource.com/993995Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52337}

This instance of `pragma optimize` was from long ago when we built with
frame pointers disabled. We always build with frame pointers on these
days.

(Also, clang-cl ignores this pragma and will warn about it.)

Bug: chromium:505314
Change-Id: Ia125c9c54e6ec486247241102de1cb62c72d268b
Reviewed-on: https://chromium-review.googlesource.com/993423
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52336}

This change implements the WebAssembly.Global object and constructor,
but none of the accessors or functions.

There is a new flag to enable this: --experimental-wasm-mut-global.

Change-Id: Ifeb270d57392d7ca0900c80c0038932c96ee8b61
Reviewed-on: https://chromium-review.googlesource.com/989296
Commit-Queue: Ben Smith <binji@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52335}

This reverts commit 0cd7468b.

Reason for revert: Blocks v8 roll into chromium: https://crbug.com/828499

Original change's description:
> [wasm] Always enable guard regions on 64-bit platforms
> 
> This change makes full 8 GiB guard regions always enabled on 64-bit
> platforms.
> 
> Additionally, since all Wasm memory allocation paths have some form of
> guard regions, this removes and simplifies most of the logic around
> whether to enable guard regions.
> 
> R=​gdeepti@chromium.org
> 
> Change-Id: Idf3fbcc11ac70ea2ee7eb88c2173d6a1410395e1
> Reviewed-on: https://chromium-review.googlesource.com/985142
> Commit-Queue: Eric Holk <eholk@chromium.org>
> Reviewed-by: Brad Nelson <bradnelson@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52310}

TBR=bradnelson@chromium.org,gdeepti@chromium.org,eholk@chromium.org

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

Change-Id: I126b5afe283a4fe08adfa301e637d2641c29cccd
Reviewed-on: https://chromium-review.googlesource.com/993160Reviewed-by: Eric Holk <eholk@chromium.org>
Commit-Queue: Eric Holk <eholk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52334}

This patch enables ShouldOptimizeForMemoryUsage if the old generation
size is within 1/8th of the max old generation size.

This patch also passes the reduce-memory flag to incremental marking
whenever ShouldOptimizeForMemoryUsage is enabled.

Bug: chromium:824214
Change-Id: I5cfc0566ca0e23dfa1b8c0439a4e67424ddc852d
Reviewed-on: https://chromium-review.googlesource.com/973524
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52333}

https://github.com/tc39/ecma262/pull/778 was recently merged
to Ecma 262.

It changes the way to convert between "local time" and UTC in such
a way that it'd work for all timezones whether or not there has
been any change in the timezone offset of the standard time. For
instance, Europe/Moscow and some parts of US state of Indiana have
changed the standard (non-DST) timezone offset a few times. The
previous spec assumes that the the standard timezone offset is
constant, but the new spec take into account the offset change
history.

In addition, it specifies a new way to calculate the timezone
offset during a timezone transition (either in and
out of DST or timezone offset shift).

During a negative transition (e.g.  fall backward / getting
out of DST), repeated times are to be interpreted as if the
offset before the transition is in effect.

During a positive transition (e.g. spring forward / getting
into DST), skipped times are to be treated similarly. That
is, they are to be interpreted as if the offset before the
transition is in effect.

With icu-timezone-data, v8 is compliant to the new spec for the
past and the future as well as now whether or not the standard
timezone offset of a given timezone has changed over time
(e.g. Europe/Moscow, Pacific/Apia). With icu-timezone-data,
Australia/Lord_Howe (30 minute DST change) also works per spec.

Without icu-timezone-data, it works only for timezones of which
the standard timezone offset is the same as the current offset
(e.g. most North American timezones other than parts of Indiana)
and of which the DST shift is an hour. For instance, it doesn't work
for Europe/Moscow in 2010 when the standard timezone offset was
+4h because the current (2018) standard timezone offset is +3h. Neither
does it for Lord Howe in Australia with the DST shift of 0.5 hr.

This CL used to require one of the two ICU CLs below, but not
any more.

  https://chromium-review.googlesource.com/c/chromium/deps/icu/+/572652
  https://chromium-review.googlesource.com/851265  (a proposed CL to the
  upstream ICU).

Bug: v8:3547,chromium:417640,v8:5714
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Ib162295da5bee31b2390bd0918157014aebd3e33
Reviewed-on: https://chromium-review.googlesource.com/572148
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52332}

Bug: chromium:827013
Change-Id: I07a04cbe278b35dcd822d71d0a39a19aa9b46eb3
Reviewed-on: https://chromium-review.googlesource.com/993053
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52331}

This is a follow-up to https://chromium-review.googlesource.com/981687.

When a wasm function has a large stack frame, the x64 code generator
performs the stack overflow check before constructing the frame. This
requires the use of the `address_of_real_stack_limit` external
reference.

This reference is thread local, so if it is not relocated the stack
overflow check will always fail.

Bug: chromium:808848
Change-Id: I0edf3fe5a006242fc50d0bff44cd9dd0e7d85bd9
Reviewed-on: https://chromium-review.googlesource.com/982906
Commit-Queue: Ben Smith <binji@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52330}

This adds a systematic test for binary operations on different sets of
registers. By loading a number of values from memory to locals, we
create a cache state where all registers are used to hold local
variables. We then pick two of them and perform a binary operation on
them.

R=titzer@chromium.org

Bug: v8:7589, v8:6600
Change-Id: I2a4855810bb5c39247688c43cbe9d12d64fbc181
Reviewed-on: https://chromium-review.googlesource.com/992412
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52329}

Makes CallHandlerInfo its own instance type, with an additional
map to distinguish side-effect-free handlers. In a followup, we
can expose an API flag to set the map.

This CL does not support whitelisting calls to ObjectTemplates
that use SetCallAsFunctionHandler().

Bug: v8:7515
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: Ie32fe144046a9fae3e3b1ea5602b0da3db8a5616
Reviewed-on: https://chromium-review.googlesource.com/965741Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Erik Luo <luoe@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52328}

On ia32, the implementation of 64-bit shifts first moved {src} into
{dst}, then {amount} into {ecx}. This fails if {dst} overlaps {amount},
because {amount} would be overwritten before being used. Just changing
the order to these two moves would also not be correct, since {src} can
contain {ecx}.
Thus, implement this via a general parallel register move, which
resolves cycles automatically.

R=titzer@chromium.org

Bug: v8:7589, v8:6600
Change-Id: I2556b9aa66a89a067372b7713dbbb3d71d2f923f
Reviewed-on: https://chromium-review.googlesource.com/981134
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52327}

TBR=sergiyb@chromium.org

Bug: chromium:773297
Change-Id: Icbff53ed84b72d74f1db9884b3b846b8ff72686b
No-Try: true
No-Presubmit: true
Reviewed-on: https://chromium-review.googlesource.com/992317Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52326}

The destructor of the owner of a phantom handle must clear the phantom
handle first before calling any function that can trigger GC.

Bug: chromium:827806
Change-Id: I20141d0d710c486aec3d92e729d76a53069e16fd
Reviewed-on: https://chromium-review.googlesource.com/992093Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52325}

Summary of work done:
* Simplify complicated CompareAndBranch instructions
* Mark BC1EQZ and BC1NEZ as compact branches in simulator
* Remove unneeded nops for BC1EQZ and BC1NEZ
* Block trampolines for delay slot of BC1T and BC1F

Change-Id: I86f3a497e6e9ac73075bb51653c2d4c6ab8454b9
Reviewed-on: https://chromium-review.googlesource.com/986260
Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Reviewed-by: Sreten Kovacevic <sreten.kovacevic@mips.com>
Cr-Commit-Position: refs/heads/master@{#52324}

This reverts commit 12420537.

Reason for revert: MSAN complains
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/builds/20527

Original change's description:
> [heap] fix Sweeper::kNumberOfSweepingSpaces
> 
> When indexing into vectors of sweeping spaces, convert the
> AllocationSpace to an index (by subtracting FIRST_GROWABLE_PAGED_SPACE)
> to avoid wasted space at the start.
> 
> Change-Id: Ia23fe6dae42d5accea9f7fe7ec5c3b303ef857b4
> Reviewed-on: https://chromium-review.googlesource.com/978242
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Commit-Queue: Dan Elphick <delphick@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52320}

TBR=hpayer@chromium.org,delphick@chromium.org

Change-Id: I9894dc10f122c9fab409e08b2a45389f1f51748f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/992152Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52323}

Builtin continuation frames know their height now. This is prework
to allow UnwindAndFindHandler to reconstructor the stack pointer for
the ContinueToBuiltin trampoline.

Bug: v8:7584
Change-Id: If1361f5bbac130c284cd46c0d39cc81e2df613d3
Reviewed-on: https://chromium-review.googlesource.com/983633Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52322}

R=leszeks@chromium.org

Bug: v8:7591
Change-Id: Idcd2d586ab279dc070d2cfb2558298ebdd3ce33b
Reviewed-on: https://chromium-review.googlesource.com/991873
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52321}

When indexing into vectors of sweeping spaces, convert the
AllocationSpace to an index (by subtracting FIRST_GROWABLE_PAGED_SPACE)
to avoid wasted space at the start.

Change-Id: Ia23fe6dae42d5accea9f7fe7ec5c3b303ef857b4
Reviewed-on: https://chromium-review.googlesource.com/978242Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52320}

This reverts commit 0258a061.

Reason for revert: breaks perfbots, e.g. https://luci-milo.appspot.com/buildbot/internal.client.v8/v8_arm64_perf/21485

Original change's description:
> [test] Add JSTest benchmark for object literal spread
> 
> Bug: v8:7611
> Change-Id: Ia5467fd4da3b385568bcc3f3fdc1a8c56bd6340e
> Reviewed-on: https://chromium-review.googlesource.com/987321
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52313}

TBR=gsathya@chromium.org,bmeurer@chromium.org

Change-Id: I4a0e8da965b784739f821ff2c3bba742e70a4b7f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7611
Reviewed-on: https://chromium-review.googlesource.com/992092Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52319}

This ensures that we have gatekeepers for API changes.

R=adamk@chromium.org

Change-Id: I7a78f9590dfc444a20044fe323b9470f4f9004a3
Reviewed-on: https://chromium-review.googlesource.com/986267
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52318}

Bug: chromium:794998
Change-Id: Ib607bc891625db686fe37cfe416c3abf4ddf9a2b
Reviewed-on: https://chromium-review.googlesource.com/983777Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52317}

When we know that the imported JavaScript function, and we cannot
generate a direct call because the parameter count does not match, then
we can call directly to the ArgumentsAdaptor instead of the Call
builtin.

R=bmeurer@chromium.org

Change-Id: I72882c2edf170d88135d12352852302d56cc54a5
Reviewed-on: https://chromium-review.googlesource.com/986095Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52316}

When peeking into descriptor arrays (for Function.prototype.bind
inlining), we need to check the number of descriptors rather than
the length of the DescriptorArray.

Bug: chromium:825045
Change-Id: I55dbe1544e5e4cb8e23d873961c71ed12294d89c
Reviewed-on: https://chromium-review.googlesource.com/991812Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52315}

This reverts commit 6031412e.

Reason for revert: Tanks quite a few benchmarks (crbug.com/827854).

Original change's description:
> [x64] Reuse scratch register for ExternalReference
> 
> This reduces CEntryStub code size by 64 bytes, and reduces CallApiCallbackStub
> by 27 bytes.
> 
> Change-Id: I46479077f61fdae6b260ca28c67df3509dee5c1a
> Reviewed-on: https://chromium-review.googlesource.com/963652
> Commit-Queue: Kanghua Yu <kanghua.yu@intel.com>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52005}

TBR=bmeurer@chromium.org,kanghua.yu@intel.com
Bug: chromium:827854

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

Change-Id: Ief0905a7bdba86f7b9fd20888eecdfd58bc6ea7d
Reviewed-on: https://chromium-review.googlesource.com/991712Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52314}

Bug: v8:7611
Change-Id: Ia5467fd4da3b385568bcc3f3fdc1a8c56bd6340e
Reviewed-on: https://chromium-review.googlesource.com/987321Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52313}

TBR=sergiyb@chromium.org

Bug: chromium:773297
Change-Id: I51a9cff42adb477bc089a869741e34513426e5b6
Reviewed-on: https://chromium-review.googlesource.com/989715
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52312}

Remove a call to `icu::toUCharPtr()` that wasn't present in other
similar looking call sites either, just reinterpret_cast directly.

Fixes https://github.com/nodejs/node/issues/19656.

Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: If281ce0a39356aa8bd20efb24c3e4b52b06841a3
Reviewed-on: https://chromium-review.googlesource.com/987953Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Commit-Queue: Ben Noordhuis <info@bnoordhuis.nl>
Cr-Commit-Position: refs/heads/master@{#52311}

This change makes full 8 GiB guard regions always enabled on 64-bit
platforms.

Additionally, since all Wasm memory allocation paths have some form of
guard regions, this removes and simplifies most of the logic around
whether to enable guard regions.

R=gdeepti@chromium.org

Change-Id: Idf3fbcc11ac70ea2ee7eb88c2173d6a1410395e1
Reviewed-on: https://chromium-review.googlesource.com/985142
Commit-Queue: Eric Holk <eholk@chromium.org>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52310}

crtdbg.h provides the declarations for _CrtSetReportMode and the _CRT_*
constants. It should have moved in
https://chromium-review.googlesource.com/968244, but the MSVC C++
headers appear to include crtdbg.h transitively, so we only noticed this
on the libc++ Windows buildbot.

Tbr: mlippautz@chromium.org
Bug: chromium:801780
Change-Id: Ia07f6136e4b8d1f25014e00b0b9f662029ab5a2b
Reviewed-on: https://chromium-review.googlesource.com/981399
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52309}

Bug: v8:6600
Change-Id: Ieec3b7b9fcfd278c844c9591164e14247743e218
Reviewed-on: https://chromium-review.googlesource.com/987852Reviewed-by: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Cr-Commit-Position: refs/heads/master@{#52308}

This is a reland of 16aecc5d

Intent to ship:
https://groups.google.com/d/msg/v8-users/ShhW0Xewph0/1-OT9q0_DQAJ

Originally reviewed at:
Reviewed-on: https://chromium-review.googlesource.com/981596

Bug: v8:6791
Change-Id: I772af807b9486081d7cd96b538bf5bc98d4dcffe
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng;luci.v8.try:v8_linux_blink_rel
Reviewed-on: https://chromium-review.googlesource.com/984857Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52307}