For non-simple param lists, the parser first declares a TEMPORARY for each
param, and then the named variables as locals. The TEMPORARY variables determine
the parameter count.

This CL makes the PreParser produce the same parameter count as the Parser.

BUG=v8:5516

Change-Id: I8a794d6a8342145ab7934d922e2d69450d67b199
Reviewed-on: https://chromium-review.googlesource.com/517944
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45566}

BUG=v8:5402

Change-Id: If5f763e6a11d446e36719277a18b00a0cd8df8fa
Reviewed-on: https://chromium-review.googlesource.com/517162
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45565}

Manually rolls:
https://chromium.googlesource.com/chromium/src/build/+log/5488ca8df..53a7b319

Fixes gyp build after:

https: //codereview.chromium.org/2900193003
Change-Id: I0249aa7d1c40bcb1533c56577bfbda4aedd8cbf9
Reviewed-on: https://chromium-review.googlesource.com/518144Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45564}

Bug: v8:6211
Change-Id: If6d2ef7889ae6a0c3aa430d3f69c53f19cc1f1c6
Reviewed-on: https://chromium-review.googlesource.com/509571Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45563}

R=machenbach@chromium.org

Change-Id: I48b6bda0bfb3c8aef117616015ee4225d4bdecfc
Reviewed-on: https://chromium-review.googlesource.com/517486
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45562}

Eventually I want to delete that macro, so just inline it at the places
where we'll need to keep it.

BUG=v8:5830
R=marja@chromium.org

Change-Id: I904a1dd3555c23c69e457e078faaaa86a9514932
Reviewed-on: https://chromium-review.googlesource.com/518043Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45561}

Replace the macro with more generic macros expanding to the same
code.

BUG=v8:5830
R=marja@chromium.org

Change-Id: Ibf31fa4d89960a025af859198e190910c5608a20
Reviewed-on: https://chromium-review.googlesource.com/518006
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45560}

For lazy compilation, we encode information about table exports in the
deoptimization data. This information is rebuilt on each instantiation,
so we need to reset it when reusing code objects from another instance.

R=ahaas@chromium.org
BUG=chromium:727219

Change-Id: I90557ef06e692d0a8323223cac26679efcfa408b
Reviewed-on: https://chromium-review.googlesource.com/517945Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45559}

It happens frequently that unrelated compiler errors lead to the
instantiation of {read_leb_tail} with an invalid {byte_index}, which
again triggers compiler errors.
This change fixes this, such that illegal instantiation just triggers a
static_assert and nothing more. This helps to spot the actual error.

Drive-by: Mark {Min} and {Max} constexpr, such that they can produce
constexpr results. Note that the result will only be constexpr if both
arguments are constexpr.

R=ahaas@chromium.org

Change-Id: I35d6865a7f569d72ace0debb045ac615cfd87d92
Reviewed-on: https://chromium-review.googlesource.com/518005Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45558}

All APIs that can throw exceptions should return Maybe<> values

BUG=none
R=neis@chromium.org,gsathya@chromium.org

Change-Id: I6a6e5888cd71257bb02bdcfcc587c909d0c1d8f4
Reviewed-on: https://chromium-review.googlesource.com/517785
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45557}

WasmGraphBuilder::GrowMemory does not access the module or the instance
any more. This was initially needed to reference the context as a
HeapConstant in the code.
This CL just removes the DCHECKs, which failed with the
--wasm-lazy-compilation flag.

R=ahaas@chromium.org
BUG=chromium:726665

Change-Id: Ieac53fe376256c47e8ef2fafca818a99ff063683
Reviewed-on: https://chromium-review.googlesource.com/516706Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45556}

Parallel compilation should only be chosen if there are background threads
available. Otherwise, the overhead of orchestrating (non-)parallel work
can be omitted by just compiling synchronously.

R=ahaas@chromium.org

Change-Id: I333fb87e07fdb3260ab4c9c2c1885a1df4c5e4ef
Reviewed-on: https://chromium-review.googlesource.com/513062Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45555}

Also move the soon-to-be-deprecated version to deprecated

BUG=none
R=ulan@chromium.org

Change-Id: I2252404f63e25ac35c7798daf66b36144bef6a7e
Reviewed-on: https://chromium-review.googlesource.com/518162Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45554}

BUG=

Review-Url: https://codereview.chromium.org/2900603004
Cr-Commit-Position: refs/heads/master@{#45553}

Tests should instead be skipped or fixed.

Existing timeout expectations are either optimistically deleted or replaced by the SLOW keyword.

Change-Id: Ic43f52bf18d0702674c95f9263a109041a1c9cd8
Reviewed-on: https://chromium-review.googlesource.com/518122Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45552}

Implements the Allocate, Add, and HasKey operations. Also, adds GC
support for this new instance type.

Bug: v8:6443
Change-Id: I1cc7ba2faead2a11f7b0381a57858629e123aee6
Reviewed-on: https://chromium-review.googlesource.com/500447
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45551}

Bug: chromium:724820
Change-Id: If4d05326ad00d0d3efe8f58b361595f2655d90d2
Reviewed-on: https://chromium-review.googlesource.com/518142Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45550}

Bug: v8:6391
Change-Id: If63078c756d9cfb00e515fae005755c4ed8b12f7
Reviewed-on: https://chromium-review.googlesource.com/512803Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45549}

The test OneByteArrayJoin failed on MIPS64 in debug mode after
https://chromium-review.googlesource.com/c/489946/ with error messages
"allocation failure GC in old space requested" and
"Fatal javascript OOM in CALL_AND_RETRY_LAST". Successful test execution
is possible on two ways: with flag --max_old_space_size=7 or with
modification in the test (constraints.set_max_old_space_size(7)).

TEST=cctest/test-strings/OneByteArrayJoin
BUG=

Review-Url: https://codereview.chromium.org/2907803002
Cr-Commit-Position: refs/heads/master@{#45548}

This reverts commit 7a9cc704.

Reason for revert: Changes layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/15882

This is about:
inspector/sources/debugger/source-frame-inline-breakpoint-decorations.html

Original change's description:
> [inspector] moved var initialization break location before init expression
> 
> This CL improves break locations for expressions like 'var a = <expr>'. Without CL we use <expr> position as break location for initialization statement, with this CL we use position of first character after '=' as position.
> Benefits (see test for details):
> - only one break in expressions which includes mix of property lookup and calls, e.g. var p = Promise.resolve().then(x => x * 2),
> - removed redundant break location for expressions like: let { x, y } = { x: 1, y: 2}.
> 
> Bug: v8:5909
> Change-Id: I039d911903a2826c9859710a63ab0462c992e11b
> Reviewed-on: https://chromium-review.googlesource.com/513926
> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45530}

TBR=dgozman@chromium.org,marja@chromium.org,kozyatinskiy@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
Bug: v8:5909

Change-Id: Ibf84401e8050d3c84db219d983de2c6bba0f697f
Reviewed-on: https://chromium-review.googlesource.com/518102Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45547}

This allows embedders to delay initialization of the module system until after
the isolate was created.

BUG=v8:6428
R=gsathya@chromium.org

Review-Url: https://codereview.chromium.org/2897103002
Cr-Commit-Position: refs/heads/master@{#45546}

The memcpy and memmove externals can end up at the same address; see bug for
details.

BUG=chromium:726896

Review-Url: https://codereview.chromium.org/2906193002
Cr-Commit-Position: refs/heads/master@{#45545}

... to make AsyncFunction subclassing work.

Bug: chromium:725537
Change-Id: I7edf4891e14e01567046e7536b3aa93877111448
Reviewed-on: https://chromium-review.googlesource.com/517087
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45544}

... which caused assertion failures in --enable-slow-asserts mode.
The surrounding code treated the constructor value properly so regression
test is not necessary.

Bug: chromium:726622
Change-Id: Icd43d9117a1125bec8feca8eca5708993de2c3ef
Reviewed-on: https://chromium-review.googlesource.com/516626Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45543}

BUG=v8:6243

Change-Id: Ia6dfa407591d1b06d5b014627bb44413540aecb3
Reviewed-on: https://chromium-review.googlesource.com/516984Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45542}

Bug: 
Change-Id: I56f41392a2c3bbd203553e3fb386f8b7234d5e75
Reviewed-on: https://chromium-review.googlesource.com/516624Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45541}

Which I introduced in:

c15b3ffc [arm] Share constant pool entries in snapshot.

BUG=chromium:725714

Review-Url: https://codereview.chromium.org/2905643002
Cr-Commit-Position: refs/heads/master@{#45540}

All other properties in the boilerplate are data fields, so we can avoid additional checks.

Bug: 
Change-Id: Ie494329332b0ba646515850b6d267fb05735f0ea
Reviewed-on: https://chromium-review.googlesource.com/517044Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45539}

This removes a lot of special handling for the predictable platform.
Instead of executing spawned foreground and background tasks
immediately (i.e. inside the scope that spawns the tasks), just add
both to the foreground task queue.

This avoids existing special handling for predictable mode in wasm
async compilation, and should fix current failures on the predictable
bot.

BUG=v8:6427

Change-Id: Idbaa764a3dc8c230c29f3937d885e12174691ac4
Reviewed-on: https://chromium-review.googlesource.com/509694Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45538}

Bug: chromium:726636
Change-Id: Ied6af8c969ed05b7a334238b30930658af060e7d
Reviewed-on: https://chromium-review.googlesource.com/516734Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45537}

This speeds up fast-mode object copying by ~2x and __proto__:null cases by ~20x.

Bug: 
Change-Id: Ic3893ae4c87063f0c8c524ef55c0e786b7a87192
Reviewed-on: https://chromium-review.googlesource.com/516983
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45536}

This CL removes the isolate_ property from the Cancelable class. The
isolate is actually not used in the class itself, only in sub-classes
which can store the isolate themselves.

R=jochen@chromium.org, mlippautz@chromium.org

Change-Id: If102fdea41b81fb3cb25782728f7fcbce9642815
Reviewed-on: https://chromium-review.googlesource.com/516704Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45535}

- This won't save a bit, since the enum is not a flags enum and there is
  still room for another value.
- While it may be possible to eliminate this value, the code to init
  and check for invalid becomes much more complex. Unallocated operands
  are currently created with invalid vreg code, so we also have to check
  the policy.

BUG=v8:6325

Review-Url: https://codereview.chromium.org/2904603004
Cr-Commit-Position: refs/heads/master@{#45534}

- Removes set_virtual_register method. InstructionOperands are immutable.
- Adds a new ctor to copy an UnallocatedOperand with a new vreg.
- Removes some DCHECKs in UnallocatedOperand that are always true. To
  make sure, make UnallocatedOperand final.
- Cleans up some comments on UnallocatedOperand Lifetime enum.

BUG=v8:6325

Review-Url: https://codereview.chromium.org/2897203002
Cr-Commit-Position: refs/heads/master@{#45533}

R=joransiu@ca.ibm.com, bjaideep@ca.ibm.com

Bug: 
Change-Id: I73c44a0dd93e3925dbe895a477175d255edbed56
Reviewed-on: https://chromium-review.googlesource.com/514123Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#45532}

Fix 233b6926

With the introduction of upfront deopt table generation, case where
deoptimization tables have more than 8000 entries become much more common
and bugs started to appear.

This CL fixes the issue, but it is far from perfect. We had to
increase number of instruction per table entry from 2 to 3 in
order to accommodate larger tables.

TEST=mjsunit/array-sort,mjsunit/json,mjsunit/md5
BUG=

Review-Url: https://codereview.chromium.org/2901393003
Cr-Commit-Position: refs/heads/master@{#45531}

This CL improves break locations for expressions like 'var a = <expr>'. Without CL we use <expr> position as break location for initialization statement, with this CL we use position of first character after '=' as position.
Benefits (see test for details):
- only one break in expressions which includes mix of property lookup and calls, e.g. var p = Promise.resolve().then(x => x * 2),
- removed redundant break location for expressions like: let { x, y } = { x: 1, y: 2}.

Bug: v8:5909
Change-Id: I039d911903a2826c9859710a63ab0462c992e11b
Reviewed-on: https://chromium-review.googlesource.com/513926
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45530}

- Increase FPUregisters_[] element size to 128b in order to support MSA regs
- Add skeleton for MSA instr. decoding in mips32 and mips64 simulator
- Add support for fill.df, copy_u.df and copy_s.df MSA instructions
- Assembler test for fill.df, copy_u.df and copy_s.df

BUG=

Review-Url: https://codereview.chromium.org/2799923002
Cr-Commit-Position: refs/heads/master@{#45529}

This reverts commit 92cfe00c.

Reason for revert: Breaking all the clusterfuzz builders with error message:
group @"./mksnapshot.rsp" ./libv8_libbase.so ./libv8_libplatform.so ./libicui18n.so ./libicuuc.so ./libc++.so -Wl,--end-group   -ldl -lrt 
../../buildtools/third_party/libc++/trunk/include/string:1831: error: undefined reference to 'std::__1::__basic_string_common<true>::__throw_length_error() const'
../../buildtools/third_party/libc++/trunk/include/vector:930: error: ...

e.g.: https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20ASAN%20-%20debug%20builder/builds/16157/steps/compile/logs/stdio

Original change's description:
> Update V8 DEPS.
> 
> Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/5488ca8..3532f27
> 
> Rolling v8/buildtools: https://chromium.googlesource.com/chromium/buildtools/+log/98f00fa..57c9408
> 
> Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/51b3178..518df53
> 
> Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/05f3060..f294e27
> 
> TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org
> 
> Change-Id: I8e154bcc89d8cdc292409a15dc4081666941c959
> Reviewed-on: https://chromium-review.googlesource.com/514762
> Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
> Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45527}

TBR=v8-autoroll@chromium.org,machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: I2c06ebf13219c92b4fa8891743c9dd9f23e91fcf
Reviewed-on: https://chromium-review.googlesource.com/515462Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45528}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/5488ca8..3532f27

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/buildtools/+log/98f00fa..57c9408

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/51b3178..518df53

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/05f3060..f294e27

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

Change-Id: I8e154bcc89d8cdc292409a15dc4081666941c959
Reviewed-on: https://chromium-review.googlesource.com/514762Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45527}