The "stress_background_compile" variant runs on all our bots. We
combine it with testing wasm code GC (which kind of fits into
background compile stressing) to get more coverage for that. Both
features are orthogonal, so we can test both at the same time without
loosing any coverage.

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

Bug: v8:8217
Change-Id: Ib17decd4869978ff98e302694fa73d70ceec120e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1588472Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61151}

Since wasm optimizations are independent of JS optimizations, we can
just combine the "no_liftoff" variant with the existing "stress"
variant (which has the similar "--always-opt" option for JS), and add
a "Liftoff only" variant as part of "nooptimization".

This gives more coverage to find bugs like https://crrev.com/c/1543354
more easy.

R=mstarzinger@chromium.org, machenbach@chromium.org

Change-Id: I81bb22074c59dcb650a05252da43a4170cd467ac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1559740
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60714}

Added a new Error Message for Missing Function Name.

The program:

function(){}

...now produces:
	SyntaxError: Function statements require a valid function name.

...instead of:
	SyntaxError: Unexpected Token (

Bug: v8:3698, v8:6513
Change-Id: I3c12dfcfe80b94209aa9af434ae1d212970cf362
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1500914
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60376}

NOTRY=true

Bug: v8:8889
Change-Id: I1faf4bcb8f573485915a8b79d551fbb4985a02a0
Reviewed-on: https://chromium-review.googlesource.com/c/1489075Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59872}

This is a reland of 81eec150

Original change's description:
> Reland "[test] refactor testsuite configuration"
>
> This is a reland of 7f92ad0a
>
> Original change's description:
> > [test] refactor testsuite configuration
> >
> > Every testsuite configuration consist of at least 30% code duplication.
> >
> > The code age ranges from 10 years old to 5 years old. Implementing anything that
> > touches the testsuite code becomes a technical fight to the death.
> >
> > This CL removes all the duplication by refactoring the common functionality.
> >
> > This CL contains structural changes without any logical changes % small bug
> > fixes.
> >
> > R=machenbach@chromium.org
> > CC=yangguo@chromium.org,sergiyb@chromium.org
> >
> > Bug: v8:8174, v8:8769
> > Change-Id: Iee299569caa7abdc0307ecf606136669034a28a2
> > Reviewed-on: https://chromium-review.googlesource.com/c/1445881
> > Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org>
> > Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#59361}
>
> Bug: v8:8174, v8:8769
> Change-Id: I8e7078cfb875ceb3777e57084e6f8dfac09693e7
> Reviewed-on: https://chromium-review.googlesource.com/c/1454485
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Tamer Tas <tmrts@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59369}

Bug: v8:8174, v8:8790
Change-Id: I38ab9d37bca76057441a970f26e2102e4387a857
Reviewed-on: https://chromium-review.googlesource.com/c/1454724
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59387}

This reverts commit 81eec150.

Reason for revert: windows mozilla test failures

Original change's description:
> Reland "[test] refactor testsuite configuration"
> 
> This is a reland of 7f92ad0a
> 
> Original change's description:
> > [test] refactor testsuite configuration
> > 
> > Every testsuite configuration consist of at least 30% code duplication.
> > 
> > The code age ranges from 10 years old to 5 years old. Implementing anything that
> > touches the testsuite code becomes a technical fight to the death.
> > 
> > This CL removes all the duplication by refactoring the common functionality.
> > 
> > This CL contains structural changes without any logical changes % small bug
> > fixes.
> > 
> > R=machenbach@chromium.org
> > CC=yangguo@chromium.org,sergiyb@chromium.org
> > 
> > Bug: v8:8174, v8:8769
> > Change-Id: Iee299569caa7abdc0307ecf606136669034a28a2
> > Reviewed-on: https://chromium-review.googlesource.com/c/1445881
> > Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org>
> > Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#59361}
> 
> Bug: v8:8174, v8:8769
> Change-Id: I8e7078cfb875ceb3777e57084e6f8dfac09693e7
> Reviewed-on: https://chromium-review.googlesource.com/c/1454485
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Tamer Tas <tmrts@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59369}

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

Change-Id: I8f5650b5f46be299c004e2fa8b708fa2c17a4dc2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8174, v8:8769
Reviewed-on: https://chromium-review.googlesource.com/c/1454607Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59370}

This is a reland of 7f92ad0a

Original change's description:
> [test] refactor testsuite configuration
> 
> Every testsuite configuration consist of at least 30% code duplication.
> 
> The code age ranges from 10 years old to 5 years old. Implementing anything that
> touches the testsuite code becomes a technical fight to the death.
> 
> This CL removes all the duplication by refactoring the common functionality.
> 
> This CL contains structural changes without any logical changes % small bug
> fixes.
> 
> R=machenbach@chromium.org
> CC=yangguo@chromium.org,sergiyb@chromium.org
> 
> Bug: v8:8174, v8:8769
> Change-Id: Iee299569caa7abdc0307ecf606136669034a28a2
> Reviewed-on: https://chromium-review.googlesource.com/c/1445881
> Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59361}

Bug: v8:8174, v8:8769
Change-Id: I8e7078cfb875ceb3777e57084e6f8dfac09693e7
Reviewed-on: https://chromium-review.googlesource.com/c/1454485Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59369}

This reverts commit 7f92ad0a.

Reason for revert: https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Win32/19148

Original change's description:
> [test] refactor testsuite configuration
>
> Every testsuite configuration consist of at least 30% code duplication.
>
> The code age ranges from 10 years old to 5 years old. Implementing anything that
> touches the testsuite code becomes a technical fight to the death.
>
> This CL removes all the duplication by refactoring the common functionality.
>
> This CL contains structural changes without any logical changes % small bug
> fixes.
>
> R=​machenbach@chromium.org
> CC=​yangguo@chromium.org,sergiyb@chromium.org
>
> Bug: v8:8174, v8:8769
> Change-Id: Iee299569caa7abdc0307ecf606136669034a28a2
> Reviewed-on: https://chromium-review.googlesource.com/c/1445881
> Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59361}

TBR=machenbach@chromium.org,sergiyb@chromium.org,tmrts@chromium.org,v8-reviews@chromium.org

Change-Id: I473f0d4c6b9c0239923b8c03699dbc38b7f85030
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8174, v8:8769
Reviewed-on: https://chromium-review.googlesource.com/c/1454599
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59362}

Every testsuite configuration consist of at least 30% code duplication.

The code age ranges from 10 years old to 5 years old. Implementing anything that
touches the testsuite code becomes a technical fight to the death.

This CL removes all the duplication by refactoring the common functionality.

This CL contains structural changes without any logical changes % small bug
fixes.

R=machenbach@chromium.org
CC=yangguo@chromium.org,sergiyb@chromium.org

Bug: v8:8174, v8:8769
Change-Id: Iee299569caa7abdc0307ecf606136669034a28a2
Reviewed-on: https://chromium-review.googlesource.com/c/1445881
Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59361}

The program:

    foo;
    let foo = 5;

…now produces:

    ReferenceError: Cannot access 'foo' before initialization

…instead of:

    ReferenceError: foo is not defined

Bug: v8:6513, v8:6951
Change-Id: I6c372626734570d5abeb1d0196b814dde02b9e3e
Reviewed-on: https://chromium-review.googlesource.com/c/1441151Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Commit-Queue: Suraj Sharma <surshar@microsoft.com>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59307}

This CL extends the kCircularStructure error message to include the
constructors and keys involved in the circle:

const a = {};
a.arr = [];
a.arr[0] = a;
JSON.stringify(a);

TypeError: Converting circular structure to JSON
    --> starting at object with constructor 'Object'
    |     property 'arr' -> object with constructor 'Array'
    --- index 0 closes the circle

R=gsathya@chromium.org, yangguo@chromium.org

Bug: v8:6513, v8:8696
Change-Id: I393aa3ce47d8bfd03734fccac63445006940ef7a
Reviewed-on: https://chromium-review.googlesource.com/c/1433776Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59152}

This CL enables the pre-processing step of copying from the
prototype chain for JSArrays. Previously, this was done for everything
BUT JSArrays. This brings Array#sort more in line with other engines
in the case of undefined behavior.

R=jgruber@chromium.org

Bug: v8:8666
Change-Id: I832d470dc02111b64dc4919e84e7e3e47c8fdd47
Reviewed-on: https://chromium-review.googlesource.com/c/1426119
Commit-Queue: Simon Zünd <szuend@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58999}

- "constuctor" -> "constructor"
- "dependendencies" -> "dependencies"
- "develpers" -> "developers"
- ["nonexistant"][1] -> ["nonexistent"][2]
- "reponsible" -> "responsible"

  [1]: https://en.wiktionary.org/wiki/nonexistant
  [2]: https://en.wiktionary.org/wiki/nonexistent

Change-Id: I8bb482d03c391bd0d37afd5d616229fa50a4ab77
Reviewed-on: https://chromium-review.googlesource.com/c/1390203
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58610}

Clang is known to use a lot of stack space for Debug builds, so
this patch lowers the recursion depth of that test.

Failing bot:

https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20full%20debug

First failing run:

https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20full%20debug/6606

Change-Id: Ib1da016b190fa0d9d7d38bced19f600a284c7f01
Reviewed-on: https://chromium-review.googlesource.com/c/1396079
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58555}

The reference implementation used in the tests does not fully match
the spec, so for the diverging cases we need to explicitly specify
the correct expectation.

Every single change in this patch has been verified against every
major JavaScript engine using eshost + jsvu. All implementations
match the spec (and the V8 implementation), with the following two
exceptions:

- One expectation was wrong because of a JavaScriptCore bug (that
  is, we inherited the incorrect expectation when importing the
  tests from WebKit). A comment was added for that one.
- This work resulted in the discovery of bugs in Moddable/XS:
  https://github.com/Moddable-OpenSource/moddable/issues/112

Change-Id: I05d91d7acc5c8765e941fcd68c1086c2694c710c
Reviewed-on: https://chromium-review.googlesource.com/c/1396081Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58546}

This is a reland of 0e22ec73

Original change's description:
> [regexp] Escape newlines when setting [[OriginalSource]]
> 
> This escapes LineTerminator characters in a regexp pattern when
> creating the string that will be stored in the [[OriginalSource]] slot.
> 
> As an example, the source property for all following objects will equal
> "\n" (a '\' character followed by 'n'):
> 
>   /\n/
>   new RegExp("\n")
>   new RegExp("\\n")
> 
> Bug: v8:1982, chromium:855009
> Change-Id: I3b539497a0697e3d51ec969cae49308b0b312a19
> Reviewed-on: https://chromium-review.googlesource.com/c/1384316
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Mathias Bynens <mathias@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#58387}

Bug: v8:1982, chromium:855009
Change-Id: I1ba22395477ec37e8e8c944000f9beade1e3250b
Reviewed-on: https://chromium-review.googlesource.com/c/1386495Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58419}

This reverts commit 0e22ec73.

Reason for revert: Breaks layout tests:
https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8-Blink%20Linux%2064/28814

Original change's description:
> [regexp] Escape newlines when setting [[OriginalSource]]
> 
> This escapes LineTerminator characters in a regexp pattern when
> creating the string that will be stored in the [[OriginalSource]] slot.
> 
> As an example, the source property for all following objects will equal
> "\n" (a '\' character followed by 'n'):
> 
>   /\n/
>   new RegExp("\n")
>   new RegExp("\\n")
> 
> Bug: v8:1982, chromium:855009
> Change-Id: I3b539497a0697e3d51ec969cae49308b0b312a19
> Reviewed-on: https://chromium-review.googlesource.com/c/1384316
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Mathias Bynens <mathias@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#58387}

TBR=yangguo@chromium.org,jgruber@chromium.org,mathias@chromium.org

Change-Id: I1db7e6a0c6cd1cd995fe9f499458108e88dc8cb9
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:1982, chromium:855009
Reviewed-on: https://chromium-review.googlesource.com/c/1386493Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58396}

This escapes LineTerminator characters in a regexp pattern when
creating the string that will be stored in the [[OriginalSource]] slot.

As an example, the source property for all following objects will equal
"\n" (a '\' character followed by 'n'):

  /\n/
  new RegExp("\n")
  new RegExp("\\n")

Bug: v8:1982, chromium:855009
Change-Id: I3b539497a0697e3d51ec969cae49308b0b312a19
Reviewed-on: https://chromium-review.googlesource.com/c/1384316
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58387}

- Changed "Formating" to "Formatting" in comment
- Added Maxim Mazurok <maxim@mazurok.com> to AUTHORS file as required by
https://www.chromium.org/developers/contributing-code#TOC-Legal-stuff

Change-Id: I48633694975879013c983580fa9b8c71dcb2e8f4
Reviewed-on: https://chromium-review.googlesource.com/c/1379231
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58303}

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

Bug: v8:8491
Change-Id: I8379825c194e588da582a3000201eea75b59140a
Reviewed-on: https://chromium-review.googlesource.com/c/1371826
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58243}

This reverts commit 4e3a17d0.

Reason for revert: Web compact issues, see crbug.com/910252

Original change's description:
> [runtime] Reduce spread/apply call max arguments
> 
> Bug: chromium:906043
> Change-Id: I308b29af0644c318d73926b27e65a94913c760c7
> Reviewed-on: https://chromium-review.googlesource.com/c/1346115
> Commit-Queue: Peter Marshall <petermarshall@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#57731}

TBR=jarin@chromium.org,jgruber@chromium.org,petermarshall@chromium.org,bmeurer@chromium.org

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

Bug: chromium:906043
Change-Id: I240c1b55c10fd3e108e3c49f93ce1d9ca9c61780
Reviewed-on: https://chromium-review.googlesource.com/c/1356502Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57956}

Bug: chromium:906043
Change-Id: I308b29af0644c318d73926b27e65a94913c760c7
Reviewed-on: https://chromium-review.googlesource.com/c/1346115
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57731}

Many tests were already skipped in debug mode, but they kept running on CQ
which sets dcheck_always_on, probably equally slow.

Some other tests are marked as slow based on a recent run of the arm64 sim
trybot.

NOTRY=true

Bug: v8:7783
Change-Id: Ic022518edfa112ea6d228ae9a68653c99651dbb4
Reviewed-on: https://chromium-review.googlesource.com/c/1347479Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57724}

Clang is known to use a lot of stack space for Debug builds, so
this patch lowers the recursion depth of that test after recent
changes made Debug-mode stack frames a bit larger.

a bit of Debug-mode stack space.

Bonus: drops an unnecessary cast from SerializeJSObject to save
Change-Id: I22696a1d80a6a73b5049b018e72cc8a3d8693042
Reviewed-on: https://chromium-review.googlesource.com/c/1334448Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57516}

This test takes over 8 minutes to run on arm64 debug.

Also removed redundant skips for another DFG test.

Change-Id: I9c66c90fb3dc5c42ca04010e2d0245626a867ebd
Reviewed-on: https://chromium-review.googlesource.com/c/1321037Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57303}

'simulator_run' is now used exclusively in test/*/*.status.

Change-Id: I501b7ffd19e2476f4c803ed3d25cba69d67039fa
Reviewed-on: https://chromium-review.googlesource.com/c/1318610Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57300}

Bug: v8:5367
Change-Id: I92a73692e9714b929316d8971a2258e3241bc8c6
Reviewed-on: https://chromium-review.googlesource.com/c/1288643
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56790}

This also includes ports of Array.p.toString and Array.p.toLocaleString.
Many parts of the old JS implementation are preserved, because
TypedArray.p.join still relies on it.  These will be removed once
TypedArray.p.join is ported to Torque.

To simplify implementation, special handling of extremely sparse arrays
has been removed.

Performance improvements vary by array size, elements, and sparse-ness.
Some quick numbers and graphs are here:
https://docs.google.com/spreadsheets/d/125VLmRMudk8XaomLCsZQ1ewc94WCqht-8GQwU3s9BW8/edit#gid=2087673710

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Change-Id: Ia4069a068403ce36676c37401d349aefc976b045
Reviewed-on: https://chromium-review.googlesource.com/c/1196693
Commit-Queue: Peter Wong <peter.wm.wong@gmail.com>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56699}

This is a reland of 0d91db0b.

Proposal repository:
https://github.com/tc39/proposal-well-formed-stringify

Intent to ship:
https://groups.google.com/d/msg/v8-users/IRu3bAC_pLM/pFwz2ti1AgAJ

TBR=gsathya@chromium.org

Bug: v8:7782
Change-Id: I53d006650e2b4099a111d2e5bc067e4a2c7cf4a0
Reviewed-on: https://chromium-review.googlesource.com/c/1282993Reviewed-by: Mathias Bynens <mathias@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56689}

This reverts commit 0d91db0b.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> Ship well-formed JSON.stringify 
> 
> Proposal repository:
> https://github.com/tc39/proposal-global
> 
> Intent to ship:
> https://groups.google.com/d/msg/v8-users/IRu3bAC_pLM/pFwz2ti1AgAJ
> 
> Bug: v8:7782
> Change-Id: Iaf790f134917796deac0e84cc931828934a6e589
> Reviewed-on: https://chromium-review.googlesource.com/c/1260122
> Commit-Queue: Mathias Bynens <mathias@chromium.org>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#56650}

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

Change-Id: Ie214a72a01fa81f754fd411808eb0bb748f89dbb
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7782
Reviewed-on: https://chromium-review.googlesource.com/c/1282563Reviewed-by: Mathias Bynens <mathias@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56663}

Proposal repository:
https://github.com/tc39/proposal-global

Intent to ship:
https://groups.google.com/d/msg/v8-users/IRu3bAC_pLM/pFwz2ti1AgAJ

Bug: v8:7782
Change-Id: Iaf790f134917796deac0e84cc931828934a6e589
Reviewed-on: https://chromium-review.googlesource.com/c/1260122
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56650}

It was shipped in Chrome 66.

Bug: v8:6530, v8:8238
Change-Id: I07e95073ffcf388659b9d0b16a081e0f5a5eedaf
Reviewed-on: https://chromium-review.googlesource.com/1253603Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56323}

NOTRY=true
TBR=sigurds@chromium.org

Bug: v8:7783
Change-Id: I3c4c8222b121856a58f371e3563474e17c2075fd
Reviewed-on: https://chromium-review.googlesource.com/1221189Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55823}

This is a reland of 1c48d52b.

It turned out that IterableToList doesn't always behave according to
the ES operation with the same name. Specifically, it allows holey arrays
to take its fast path, which produces an output array with holes where
actually "undefined" elements should appear.

This CL changes the version of IterableToList that is used for spreads
(IterableToListWithSymbolLookup) such that holey arrays take the slow path.
It also includes tests for such situations.

Original change's description:
> [interpreter] Add bytecode for leading array spreads.
>
> This CL improves the performance of creating [...a, b] or [...a].
> If the array literal has a leading spread, this CL emits the bytecode
> [CreateArrayFromIterable] to create the literal. CreateArrayFromIterable
> is implemented by [IterableToListDefault] builtin to create the initial
> array for the leading spread. IterableToListDefault has a fast path to
> clone efficiently if the spread is an actual array.
>
> The bytecode generated is now shorter. Bytecode generation is refactored
> into to BuildCreateArrayLiteral, which allows VisitCallSuper to benefit
> from this optimization also.
> For now, turbofan also lowers the bytecode to the builtin.
>
> The idiomatic use of [...a] to clone the array a now performs better
> than a simple for-loop, but still does not match the performance of slice.
>
> Bug: v8:7980
>
> Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
> Change-Id: Ibde659c82d3c7aa1b1777a3d2f6426ac8cc15e35
> Reviewed-on: https://chromium-review.googlesource.com/1181024
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Commit-Queue: Georg Neis <neis@chromium.org>
> Commit-Queue: Hai Dang <dhai@google.com>
> Cr-Commit-Position: refs/heads/master@{#55520}

Bug: v8:7980
Change-Id: I0b5603a12d2b588327658bf0a9b214bd0f22e237
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/1201882
Commit-Queue: Hai Dang <dhai@google.com>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55639}

Before, splice was implemented with a C++ fast path and a
comprehensive JavaScript version.

This impl. is entirely in Torque with a fastpath for SMI,
DOUBLE and OBJECT arrays, and a comprehensive slow path.
The same level of "sparse" array support as given by the
array.js implementation is included.

This reland addresses several issues:

* Removed "sparse" array support from splice.
* Addressed ClusterFuzz issue 876443:
  The test and code that uses the fix is in this CL.
  The fix in isolation can be seen here:
  https://chromium-review.googlesource.com/c/v8/v8/+/1199403
* Removed dead code in elements.cc

BUG=chromium:876443, v8:8131, v8:1956, v8:7221

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Change-Id: I2d4a66c24ba1edabeca34e27e6ff8ee6136ed5f1
Reviewed-on: https://chromium-review.googlesource.com/1201783
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55610}

This reverts commit 1c48d52b.

Reason for revert: Clusterfuzz found something.

Original change's description:
> [interpreter] Add bytecode for leading array spreads.
> 
> This CL improves the performance of creating [...a, b] or [...a].
> If the array literal has a leading spread, this CL emits the bytecode
> [CreateArrayFromIterable] to create the literal. CreateArrayFromIterable
> is implemented by [IterableToListDefault] builtin to create the initial
> array for the leading spread. IterableToListDefault has a fast path to
> clone efficiently if the spread is an actual array.
> 
> The bytecode generated is now shorter. Bytecode generation is refactored
> into to BuildCreateArrayLiteral, which allows VisitCallSuper to benefit
> from this optimization also.
> For now, turbofan also lowers the bytecode to the builtin.
> 
> The idiomatic use of [...a] to clone the array a now performs better
> than a simple for-loop, but still does not match the performance of slice.
> 
> Bug: v8:7980
> 
> Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
> Change-Id: Ibde659c82d3c7aa1b1777a3d2f6426ac8cc15e35
> Reviewed-on: https://chromium-review.googlesource.com/1181024
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Commit-Queue: Georg Neis <neis@chromium.org>
> Commit-Queue: Hai Dang <dhai@google.com>
> Cr-Commit-Position: refs/heads/master@{#55520}

TBR=rmcilroy@chromium.org,neis@chromium.org,sigurds@chromium.org,gsathya@chromium.org,jgruber@chromium.org,dhai@google.com

Change-Id: I1c86ddcc24274da9f5a8dd3d8bf8d869cbb55cb6
No-Presubmit: true
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Bug: v8:7980
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Reviewed-on: https://chromium-review.googlesource.com/1199303Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55544}

This CL improves the performance of creating [...a, b] or [...a].
If the array literal has a leading spread, this CL emits the bytecode
[CreateArrayFromIterable] to create the literal. CreateArrayFromIterable
is implemented by [IterableToListDefault] builtin to create the initial
array for the leading spread. IterableToListDefault has a fast path to
clone efficiently if the spread is an actual array.

The bytecode generated is now shorter. Bytecode generation is refactored
into to BuildCreateArrayLiteral, which allows VisitCallSuper to benefit
from this optimization also.
For now, turbofan also lowers the bytecode to the builtin.

The idiomatic use of [...a] to clone the array a now performs better
than a simple for-loop, but still does not match the performance of slice.

Bug: v8:7980

Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Ibde659c82d3c7aa1b1777a3d2f6426ac8cc15e35
Reviewed-on: https://chromium-review.googlesource.com/1181024Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
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This shares logic for finding additional resources in JS source code.
Previously the logic was implemented for mjsunit, now it will be used
across all d8-based test cases.

This'll enable adding those test suites for Android testing.

Bug: chromium:866862
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Change-Id: I7c89ba141483aaf692a03c0e168edb61bbb7b010
Reviewed-on: https://chromium-review.googlesource.com/1193873
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55503}

Also skip slowest test on the slowest extra variant.

TBR=sigurds@chromium.org

Bug: v8:7783
Change-Id: I565fa8edd9c3f20fe15af84e1b9023450ef4593e
Reviewed-on: https://chromium-review.googlesource.com/1170832
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55053}

Also mark another slow tests as SLOW.

TBR=jgruber@chromium.org

Bug: v8:7783
Change-Id: I69a8ac82e7898fa3b374c5b66a441f040d241413
Reviewed-on: https://chromium-review.googlesource.com/1069093Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53306}