Revert of [wasm]implement simd lowering for f32x4->i32x4, i32x4 min/max and shift instructions (patchset #2 id:20001 of https://codereview.chromium.org/2718323003/ )

Reason for revert:
breaks nosse4:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20debug/builds/13871

Original issue's description:
> [wasm]implement simd lowering for f32x4->i32x4, i32x4 min/max and shift instructions
>
> BUG=v8:4124
> R=bradnelson@chromium.org,bbudge@chromium.org,gdeepti@chromium.org,mtrofin@chromium.org,titzer@chromium.org
>
> Review-Url: https://codereview.chromium.org/2718323003
> Cr-Commit-Position: refs/heads/master@{#43510}
> Committed: https://chromium.googlesource.com/v8/v8/+/f75748cf4ca696fff268787068419604815f8090

TBR=bbudge@chromium.org,bradnelson@chromium.org,gdeepti@chromium.org,mtrofin@chromium.org,titzer@chromium.org,aseemgarg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124

Review-Url: https://codereview.chromium.org/2723943003
Cr-Commit-Position: refs/heads/master@{#43512}

This CL fixes unused lambda captures for big endian targets when Clang
is used for build V8.

TEST=
BUG=

Review-Url: https://codereview.chromium.org/2725613002
Cr-Commit-Position: refs/heads/master@{#43511}

BUG=v8:4124
R=bradnelson@chromium.org,bbudge@chromium.org,gdeepti@chromium.org,mtrofin@chromium.org,titzer@chromium.org

Review-Url: https://codereview.chromium.org/2718323003
Cr-Commit-Position: refs/heads/master@{#43510}

BUG=v8:4124
R=bradnelson@chromium.org,bbudge@chromium.org,gdeepti@chromium.org,mtrofin@chromium.org,titzer@chromium.org

Review-Url: https://codereview.chromium.org/2726453003
Cr-Commit-Position: refs/heads/master@{#43509}

This generally shouldn't hit since prototypes are supposed to be fast; but it makes it more uniform anyway.
This CL also drops the limitation not supporting keyed loads with normal access. There's no point in returning the slow stub there.

BUG=

Change-Id: I5578269f6c64762610e885740a692d1e91aa6aa2
Reviewed-on: https://chromium-review.googlesource.com/447698
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43508}

BUG=chromium:697017

Change-Id: Ibb7165387a983987dcd04be330591b6bb70ff991
Reviewed-on: https://chromium-review.googlesource.com/448217
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43507}

The maybe-assigned flag of the catch variable was not preserved.

BUG=v8:5636,chromium:696332

Change-Id: I9c55e1b1312bdebc53bc45bc3ca1c982bdbe9846
Reviewed-on: https://chromium-review.googlesource.com/447680Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43506}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/d25400d..2d722d1

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/4f3d6da..4a91697

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

Change-Id: I22dfab2efc5c445165a6b12b605bd8e4d43bb1dd
Reviewed-on: https://chromium-review.googlesource.com/448200Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43505}

BUG=v8:4124
R=bradnelson@chromium.org,bbudge@chromium.org,gdeepti@chromium.org

Review-Url: https://codereview.chromium.org/2723823002
Cr-Commit-Position: refs/heads/master@{#43504}

This will be useful for sharing the implementation with
SharedArrayBuffer.prototype.slice.

BUG=v8:5897

Review-Url: https://codereview.chromium.org/2697013009
Cr-Commit-Position: refs/heads/master@{#43503}

This method enables test of agent::restore methods.
Bonus: forbid setCustomObjectFormatterEnabled on disabled agent.

BUG=none
R=dgozman@chromium.org

Review-Url: https://codereview.chromium.org/2713023004
Cr-Commit-Position: refs/heads/master@{#43502}

BUG=

Change-Id: Id77205450d286be228b493deb69e1489a1e12895
Reviewed-on: https://chromium-review.googlesource.com/445906
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43501}

BUG=v8:6022

Change-Id: I54205cb3ecc2dd31ed62e55726f0ec5fcd202c30
Reviewed-on: https://chromium-review.googlesource.com/446349
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43500}

Previously, we over-approximated Scope::scope_calls_eval_ in
arrow functions: if either the outer scope or the arrow function
parameters had a direct eval call, we marked both scopes as calling
eval. This over-approximation kept getting us into trouble, though,
especially when eager or lazy parsing would disagree about the
"calls eval" bit.

This patch instead tracks eval calls accurately, using a boolean on
Scope::Snapshot that is reset as appropriately depending on whether
a particular AssignmentExpression turned out to be an arrow parameter
list or not.

BUG=chromium:691687

Change-Id: I527dc59b4d32a2797805ff26dc9f70b1311377b2
Reviewed-on: https://chromium-review.googlesource.com/446094
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43499}

This is more useful than always returning undefined.

BUG=v8:1569,v8:5978

Change-Id: Id10cf87f7865db1a85de412460eaead4e4bf3b62
Reviewed-on: https://chromium-review.googlesource.com/446846Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43498}

The order in which things were done wasn't quite correct and lead
to wrong behaviour for certain circular module graphs.

BUG=v8:1569,chromium:694566

Change-Id: I291186e261268c853a30ad891ff362904e0b28ef
Reviewed-on: https://chromium-review.googlesource.com/447399Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43497}

R=jgruber@chromium.org
BUG=v8:5080

Review-Url: https://codereview.chromium.org/2725583002
Cr-Commit-Position: refs/heads/master@{#43496}

This is mostly prework to also support prototype chain checks using data handlers

BUG=

Change-Id: I70aac1e86e45c78dfdc9f02d06b7e821494a4c9c
Reviewed-on: https://chromium-review.googlesource.com/447679
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43495}

This CL also introduces Realm.navigate(i).

BUG=chromium:683667

Change-Id: I9227292ea3a575f34367e82fc6297d234d3eecae
Reviewed-on: https://chromium-review.googlesource.com/447638
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43494}

For breakpoints which are set by setBreakpointByUrl(url:..) backend calculates source hint on first related breakpoints resolved event and then uses this hint to adjust breakpoint position in later arrived scripts with the same url or on page reload.

Doc: https://docs.google.com/a/google.com/document/d/1VtWo_-jelzEXSNbjESGTtruZngzXgbHLexfTzxNlnjE/edit?usp=sharing

BUG=chromium:688776
R=pfeldman@chromium.org, alph@chromium.org

Review-Url: https://codereview.chromium.org/2671193002
Cr-Commit-Position: refs/heads/master@{#43493}

BUG=chromium:697049

Review-Url: https://codereview.chromium.org/2723473002
Cr-Commit-Position: refs/heads/master@{#43492}

It tests a pipeline configuration we are removing.

BUG=v8:5778

Review-Url: https://codereview.chromium.org/2715153005
Cr-Commit-Position: refs/heads/master@{#43491}

With the params (a, b, ...c) the param / variable declaration order used to be
"temp, temp, c, a, b". Now it is "temp, temp, a, b, c" as you'd expect. This
makes it easier for PreParser to match the parameter order of Parser.

R=verwaest@chromium.org
BUG=v8:5516

Change-Id: I79da04ef3f812bf52c032bed6263c009fecb7988
Reviewed-on: https://chromium-review.googlesource.com/447677Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43490}

Revert of Add several SIMD opcodes to IA32 (patchset #9 id:160001 of https://codereview.chromium.org/2695613004/ )

Reason for revert:
Fails with nosse4:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20debug/builds/13853

Original issue's description:
> Add several SIMD opcodes to IA32
>
> CreateInt32x4, Int32x4ExtractLane, Int32x4ReplaceLane
> Int32x4Add, Int32x4Sub
>
> Also add paddd and psubd to ia32-assembler
>
> BUG=
>
> Review-Url: https://codereview.chromium.org/2695613004
> Cr-Commit-Position: refs/heads/master@{#43483}
> Committed: https://chromium.googlesource.com/v8/v8/+/4deb9ffdecf121c69a3db7eae6698eae23a80a15

TBR=bbudge@chromium.org,gdeepti@chromium.org,bmeurer@chromium.org,jing.bao@intel.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review-Url: https://codereview.chromium.org/2717423003
Cr-Commit-Position: refs/heads/master@{#43489}

Reland of [test] Speculatively remove local-tests from archive (patchset #1 id:1 of https://codereview.chromium.org/2640223003/ )

Reason for revert:
With the Windows bots fixed in https://chromium-review.googlesource.com/445786 , this should be good to reland. Thanks, Michael!

Original issue's description:
> Revert of [test] Speculatively remove local-tests from archive (patchset #2 id:20001 of https://codereview.chromium.org/2643983002/ )
>
> Reason for revert:
> Breaks all windows bots:
> https://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20debug/builds/6811
>
> Original issue's description:
> > [test] Remove local-tests from test262 archive and add to .isolate
> >
> > This might help fix the bots, which are broken in e.g.,
> > https://build.chromium.org/p/tryserver.v8/builders/v8_mac_rel_ng_triggered/builds/14011
> >
> > The archive was added in order to transmit test262 tests more rapidly.
> > It doesn't serve much of a purpose for local-tests. I naively added
> > local-tests there out of symmetry. However, the BUILD.gn file does not
> > regenerate an archive when files are only deleted and not added or
> > changed. Since the performance concern is not present for the small
> > volume of local-tests, this patch reverts to the more normal mechanism
> > for sending over dependencies, with test262.isolate.
> >
> > R=adamk
> >
> > Review-Url: https://codereview.chromium.org/2643983002
> > Cr-Commit-Position: refs/heads/master@{#42485}
> > Committed: https://chromium.googlesource.com/v8/v8/+/9f545ea96f18b7036ac6ec43e359d63f41c3686a
>
> TBR=adamk@chromium.org,littledan@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Review-Url: https://codereview.chromium.org/2640223003
> Cr-Commit-Position: refs/heads/master@{#42491}
> Committed: https://chromium.googlesource.com/v8/v8/+/4ffe0850dbb238dca4c1e2d14fb2984442a1fa24

TBR=adamk@chromium.org,machenbach@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2725643002
Cr-Commit-Position: refs/heads/master@{#43488}

R=jgruber@chromium.org
BUG=v8:5821

Review-Url: https://codereview.chromium.org/2720013003
Cr-Commit-Position: refs/heads/master@{#43487}

This avoids creating unnecessary intermediate maps.

BUG=chromium:588893

Change-Id: Ibc20908270a6fab58fc391f4b7e7941d9c043e9b
Reviewed-on: https://chromium-review.googlesource.com/445785Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43486}

Unibrow is currently at Unicode version 7.0.0, which does not
include mongolian vowel separator (\u180E) as white space. In
order to appease test262 at the time however we kept it as a
whitespace.

Test262 has since then been updated. And while this is not an
update of unibrow, we are removing \u180E as white space here.

R=jshin@chromium.org, littledan@chromium.org
BUG=v8:5155

Review-Url: https://codereview.chromium.org/2720953003
Cr-Commit-Position: refs/heads/master@{#43485}

BUG=chromium:664068
NOTRY=true
TBR=yangguo@chromium.org,jarin@chromium.org

Change-Id: I180153f0cb70e81711e01c9c09060e9af2f85354
Reviewed-on: https://chromium-review.googlesource.com/446363Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43484}

CreateInt32x4, Int32x4ExtractLane, Int32x4ReplaceLane
Int32x4Add, Int32x4Sub

Also add paddd and psubd to ia32-assembler

BUG=

Review-Url: https://codereview.chromium.org/2695613004
Cr-Commit-Position: refs/heads/master@{#43483}

This relaxes the check if the test262 archive should be unpacked or not.
A bug in the swarming isolate processor for windows makes the old check for the data directory pass and not unpack.
With this work-around we actually start running tests on windows.

This also fixes the regexp for exception extraction and handles the windows drive letter.
It also strips whitespace to fix a case where a carriage return was included on windows.

BUG=v8:5872

Change-Id: I363925665b0bad7530a1f93a2ea8f39b056d4174
Reviewed-on: https://chromium-review.googlesource.com/445786
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43482}

The x64 side is included in https://chromium-review.googlesource.com/c/444226/

BUG=v8:5294

Change-Id: Ie255604c5e38c72e3c2b76e1ca3557a5fde108ee
Reviewed-on: https://chromium-review.googlesource.com/446394Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43481}

R=yangguo@chromium.org
TEST=message/regress/regress-crbug-691194
BUG=chromium:691194

Change-Id: I72198e087f88abf89cdd38b99c19e10cbebda08d
Reviewed-on: https://chromium-review.googlesource.com/445942Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43480}

The above intrinsic by now has to perform a check whether the prototype
of a derived constructor is actually a constructor function itself. This
is done as part of the {JSGetConstructorCall} operator. The intrinsic
should just reduce down to the operator to maintain correct semantics.

R=bmeurer@chromium.org
TEST=mjsunit/regress/regress-crbug-696622
BUG=chromium:696622

Change-Id: Ia19c188f17ad16b12248db1f01a01b8d7258499b
Reviewed-on: https://chromium-review.googlesource.com/447716Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43479}

R=bmeurer@chromium.org

BUG=

Review-Url: https://codereview.chromium.org/2680973013
Cr-Original-Commit-Position: refs/heads/master@{#43163}
Committed: https://chromium.googlesource.com/v8/v8/+/f01c8a6e4b24ab38e58bb141fc251bc6b75dbe21
Review-Url: https://codereview.chromium.org/2680973013
Cr-Commit-Position: refs/heads/master@{#43478}

BUG=chromium:694088

Review-Url: https://codereview.chromium.org/2725593002
Cr-Commit-Position: refs/heads/master@{#43477}

In Wasm-to-interpeter entry creation, arguments for the interpreter
are stored in an argument buffer. Depending on the order of the
arguments some arguments may be misaligned and this causes crashes
on those architectures that do not support unaligned memory access.

TEST=cctest/test-wasm-interpreter-entry/TestArgumentPassing_AllTypes
BUG=

Review-Url: https://codereview.chromium.org/2705293011
Cr-Commit-Position: refs/heads/master@{#43476}

The new NewUnmappedArgumentsElements node now takes two inputs:
- the frame holding the arguments (current frame or arguments adaptor frame)
- the length of the suffix of passed arguments to be copied into the backing store

These inputs are computed with two new node types:
ArgumentsFrame()
ArgumentsLength[formal_parameter_count,is_rest_length](Node* arguments_frame)
The node type NewRestParameterElements can now be expressed with NewUnmappedArgumentsElements and an appropriate length and is thus not needed anymore.

In escape analysis, we lower loads from the length field of NewUnmappedArgumentsElements with its length input and if we find out that no write access to the arguments elements exists, we replace element loads with direct stack access and replace the NewUnmappedArgumentsElements node with a node of the new node type ArgumentsElementsState. This corresponds to an ObjectState node and gets translated into a deoptimizer instruction to allocate the backing store. Together with the already existing deoptimizer support for the actual arguments object/rest parameters, this allows to remove all allocations for arguments objects/rest parameters in this case.
In the deoptimizer, we read the actual parameters from the stack while transforming the static deopt info into TranslatedValue objects.

If escape analysis cannot remove the backing store allocation, NewUnmappedArgumentsElements gets lo

BUG=v8:5726

Review-Url: https://codereview.chromium.org/2692753004
Cr-Commit-Position: refs/heads/master@{#43475}

Avoiding runtime call overhead.
There's a fast path for Function.prototype loads, which are very common.

BUG=v8:5269

Review-Url: https://codereview.chromium.org/2711353002
Cr-Commit-Position: refs/heads/master@{#43474}

TBR=machenbach@chromium.org
NOTRY=true
NOTREECHECKS=true

Review-Url: https://codereview.chromium.org/2721593004
Cr-Commit-Position: refs/heads/master@{#43473}