Revert of PPC/s390: Reland: [TypeFeedbackVector] Store optimized code in the vector (patchset #1 id:1 of https://codereview.chromium.org/2861863003/ )

Reason for revert:
Original CL reverted.
Crashing on Canary
BUG=chromium:718891

Original issue's description:
> PPC/s390: Reland: [TypeFeedbackVector] Store optimized code in the vector
>
> Port 662aa425
>
> Original Commit Message:
>
>     Since the feedback vector is itself a native context structure, why
>     not store optimized code for a function in there rather than in
>     a map from native context to code? This allows us to get rid of
>     the optimized code map in the SharedFunctionInfo, saving a pointer,
>     and making lookup of any optimized code quicker.
>
>     Original patch by Michael Stanton <mvstanton@chromium.org>
>
> R=rmcilroy@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
> BUG=v8:6246
> LOG=N
>
> Review-Url: https://codereview.chromium.org/2861863003
> Cr-Commit-Position: refs/heads/master@{#45111}
> Committed: https://chromium.googlesource.com/v8/v8/+/d587812258c232f7b9a1f1a9a017ba3f9cea12ea

TBR=joransiu@ca.ibm.com,jyan@ca.ibm.com,michael_dawson@ca.ibm.com,rmcilroy@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:6246

Review-Url: https://codereview.chromium.org/2870703003
Cr-Commit-Position: refs/heads/master@{#45195}

R=clemensh@chromium.org

Change-Id: Iddbf8f2053318d90eaa3f469a36e67afca06b529
Reviewed-on: https://chromium-review.googlesource.com/500347Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45194}

This reverts commit dd9dbf4d.

Reason for revert: Fixed

Bug: v8:6375
Change-Id: Ied3fb991ba6f5774f5a2e6f13947b53f61196650
Reviewed-on: https://chromium-review.googlesource.com/500133Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45193}

There's no point in using our own implemention of List for this.

Bug:v8:6333

Change-Id: Ic239c9348bb17d61e41130a18e1c9f16cab9d8ee
Reviewed-on: https://chromium-review.googlesource.com/489503Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Franziska Hinkelmann <franzih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45192}

R=clemensh@chromium.org
BUG=v8:6127

Change-Id: I4f20eae61f47eaa300ba54269c68eefa910b68da
Reviewed-on: https://chromium-review.googlesource.com/500068Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45191}

R=clemensh@chromium.org

Change-Id: Ifa9f0f510bc5b864ebba199603919adb6a35d3a1
Reviewed-on: https://chromium-review.googlesource.com/500267Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45190}

This tests and fixes validation failures caused by assignments to
variables holding functions references (which are all considered
immutable). Such references can come from "stdlib" or "foreign".

R=clemensh@chromium.org
TEST=mjsunit/asm/global-imports
BUG=chromium:719382

Change-Id: Ic02be765e0773a6cc74a54e11a09d42ffb683cb8
Reviewed-on: https://chromium-review.googlesource.com/500188Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45189}

Before this fix, all existing suites would get wastefully initialized in each subprocess.

Bug: v8:6375
Change-Id: I68d961cde143754724735aecbac605852f89c7d9
Reviewed-on: https://chromium-review.googlesource.com/500187Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45188}

Before this, --print-bytecode flag was available in all Release builds
but did not actually print the bytecodes because OBJECT_PRINT is not set.

The output was pretty confusing:

[generating bytecode for function: ]
000002115442ABE9 <BytecodeArray[27]>[generating bytecode for function: main]
000002115442B069 <BytecodeArray[114]>[generating bytecode for function: Primes]
000002115442B729 <BytecodeArray[63]>[generating bytecode for function: Int32Array]
000002115442BB51 <BytecodeArray[175]>[generating bytecode for function: Primes.getPrimeCount]
000002115442BE81 <BytecodeArray[7]>[generating bytecode for function: Primes.isPrimeDivisible]
000002115442BFC9 <BytecodeArray[71]>[generating bytecode for function: Primes.addPrime]
000002115442C1C1 <BytecodeArray[31]>[generating bytecode for function: Primes.getPrime]
000002115442D7B1 <BytecodeArray[14]>

With this CL, --print-bytecode flag will always output bytecode, but
detailed info about constant pool and handler table are still guarded.

Bug:NO

Change-Id: Ie03be74520f45659303d1658da5b2acc02cf1b36
Reviewed-on: https://chromium-review.googlesource.com/497808Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Loo Rong Jie <loorongjie@gmail.com>
Cr-Commit-Position: refs/heads/master@{#45187}

Temporarily disable check for Etc/GMT and take it as well as
Etc/UTC until the root cause of crbug.com/719609 is found.

BUG=chromium:719609,v8:6252
TBR=adamk@chromium.org

Review-Url: https://codereview.chromium.org/2872873002
Cr-Commit-Position: refs/heads/master@{#45186}

Due to speculative optimizations, the compiler can run into situations
where it's asked perform impossible operations, like loading a tagged
element as a float64 instead. All of this is guaranteed to be in dead
code (unless there's a bug), but leads to confusion and violates
assumptions in the compiler (that make perfect sense for code that is
not dead). So teach LoadElimination not to mix up element accesses with
incompatible representations.

BUG=chromium:719479
R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2866233002
Cr-Commit-Position: refs/heads/master@{#45185}

BUG=chromium:651354

Review-Url: https://codereview.chromium.org/2870683003
Cr-Commit-Position: refs/heads/master@{#45184}

This is the next in the series of simplifying the logic to collect feedback
in compare bytecode handlers. An earlier cl (
https://chromium-review.googlesource.com/c/483399/) modified StrictEquals
bytecode handler. This cl inlines the type feedback collection for the
Equalbytecode handler.

Bug: v8:4280
Change-Id: I36210a2412bb84a3fdb982aabccf8cdefe87e30e
Reviewed-on: https://chromium-review.googlesource.com/498447
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45183}

This reverts commit 9a90717d.

Reason for revert: Erroneous submit...

Original change's description:
> Reland "[test] Don't flatten testcfg globals"
> 
> This reverts commit 4fdf7cdf.
> 
> Reason for revert: Fixed
> 
> Original change's description:
> > Revert "[test] Don't flatten testcfg globals"
> > 
> > This reverts commit 4fa473cb.
> > 
> > Reason for revert: Problems when v8 isn't located in a folder called "v8".
> > 
> > Original change's description:
> > > [test] Don't flatten testcfg globals
> > > 
> > > This loads each test's testcfg.py as a unique module rather than flattening all into testcfg. Other than accessing LoadTestSuite there should be no references into testcfg files.
> > > 
> > > Bug: v8:6375
> > > Change-Id: If863c1b35096b2589111e8091bb7d68f135da674
> > > Reviewed-on: https://chromium-review.googlesource.com/498807
> > > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> > > Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> > > Cr-Commit-Position: refs/heads/master@{#45178}
> > 
> > TBR=jkummerow@chromium.org,machenbach@chromium.org
> > NOPRESUBMIT=true
> > NOTREECHECKS=true
> > NOTRY=true
> > Bug: v8:6375
> > 
> > Change-Id: I3600b54279c0d98a39475432c5b2163f510153f0
> > Reviewed-on: https://chromium-review.googlesource.com/500130
> > Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> > Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#45180}
> 
> TBR=jkummerow@chromium.org,machenbach@chromium.org,v8-reviews@googlegroups.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> Bug: v8:6375
> 
> Change-Id: I8198b74ff8e1c3aa179769bef24f204dc705da67
> Reviewed-on: https://chromium-review.googlesource.com/500131
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45181}

TBR=jkummerow@chromium.org,machenbach@chromium.org,v8-reviews@googlegroups.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Bug: v8:6375

Change-Id: Id8ab1c3482806b613a024d4fff5c84a7ab0d2b0b
Reviewed-on: https://chromium-review.googlesource.com/500132Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45182}

This reverts commit 4fdf7cdf.

Reason for revert: Fixed

Original change's description:
> Revert "[test] Don't flatten testcfg globals"
> 
> This reverts commit 4fa473cb.
> 
> Reason for revert: Problems when v8 isn't located in a folder called "v8".
> 
> Original change's description:
> > [test] Don't flatten testcfg globals
> > 
> > This loads each test's testcfg.py as a unique module rather than flattening all into testcfg. Other than accessing LoadTestSuite there should be no references into testcfg files.
> > 
> > Bug: v8:6375
> > Change-Id: If863c1b35096b2589111e8091bb7d68f135da674
> > Reviewed-on: https://chromium-review.googlesource.com/498807
> > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> > Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#45178}
> 
> TBR=jkummerow@chromium.org,machenbach@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> Bug: v8:6375
> 
> Change-Id: I3600b54279c0d98a39475432c5b2163f510153f0
> Reviewed-on: https://chromium-review.googlesource.com/500130
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45180}

TBR=jkummerow@chromium.org,machenbach@chromium.org,v8-reviews@googlegroups.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Bug: v8:6375

Change-Id: I8198b74ff8e1c3aa179769bef24f204dc705da67
Reviewed-on: https://chromium-review.googlesource.com/500131Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45181}

This reverts commit 4fa473cb.

Reason for revert: Problems when v8 isn't located in a folder called "v8".

Original change's description:
> [test] Don't flatten testcfg globals
> 
> This loads each test's testcfg.py as a unique module rather than flattening all into testcfg. Other than accessing LoadTestSuite there should be no references into testcfg files.
> 
> Bug: v8:6375
> Change-Id: If863c1b35096b2589111e8091bb7d68f135da674
> Reviewed-on: https://chromium-review.googlesource.com/498807
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45178}

TBR=jkummerow@chromium.org,machenbach@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Bug: v8:6375

Change-Id: I3600b54279c0d98a39475432c5b2163f510153f0
Reviewed-on: https://chromium-review.googlesource.com/500130Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45180}

This patch also makes concurrent marking visitor loads atomic.

BUG=chromium:694255

Review-Url: https://codereview.chromium.org/2872443003
Cr-Commit-Position: refs/heads/master@{#45179}

This loads each test's testcfg.py as a unique module rather than flattening all into testcfg. Other than accessing LoadTestSuite there should be no references into testcfg files.

Bug: v8:6375
Change-Id: If863c1b35096b2589111e8091bb7d68f135da674
Reviewed-on: https://chromium-review.googlesource.com/498807Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45178}

This reverts commit 7dcc8eff.

Reason for revert: Some flakes still (see comments) and breaks predictable testing:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20predictable/builds/11452

Original change's description:
> Revert "Revert "Introducing an event loop mechanism for d8.""
> 
> This reverts commit f7c25da6.
> 
> Reason for revert: Fixed
> 
> Original change's description:
> > Revert "Introducing an event loop mechanism for d8."
> > 
> > This reverts commit de964dbe.
> > 
> > Reason for revert:
> > https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/17958
> > 
> > Original change's description:
> > > Introducing an event loop mechanism for d8.
> > > 
> > > This mechanism ensures APIs like wasm async complete their work, 
> > > without requiring use of natives (%APIs).
> > > 
> > > The mechanism is similar to the one used in content_shell,
> > > which should allow us to easily port tests in that environment.
> > > 
> > > Review-Url: https://codereview.chromium.org/2842843005
> > > Cr-Original-Commit-Position: refs/heads/master@{#44908}
> > > Bug: 
> > > Change-Id: I9deee0d256a600c60b42902fc8ef8478e5546344
> > > Reviewed-on: https://chromium-review.googlesource.com/494968
> > > Commit-Queue: Mircea Trofin <mtrofin@google.com>
> > > Reviewed-by: Jochen Eisinger <jochen@chromium.org>
> > > Cr-Commit-Position: refs/heads/master@{#45165}
> > 
> > TBR=bradnelson@chromium.org,mtrofin@chromium.org,mtrofin@google.com,jochen@chromium.org
> > NOPRESUBMIT=true
> > NOTREECHECKS=true
> > NOTRY=true
> > 
> > Change-Id: Iafec2615d705d1990c57229cab3a988c00b5e12f
> > Reviewed-on: https://chromium-review.googlesource.com/498630
> > Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> > Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#45166}
> 
> TBR=bradnelson@chromium.org,machenbach@chromium.org,mtrofin@chromium.org,mtrofin@google.com,jochen@chromium.org,v8-reviews@googlegroups.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> 
> Change-Id: Ic3c782e918326e291a6cb9bb349c609e9a340b09
> Reviewed-on: https://chromium-review.googlesource.com/498430
> Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
> Commit-Queue: Mircea Trofin <mtrofin@google.com>
> Cr-Commit-Position: refs/heads/master@{#45172}

TBR=bradnelson@chromium.org,machenbach@chromium.org,mtrofin@chromium.org,mtrofin@google.com,jochen@chromium.org,v8-reviews@googlegroups.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: I21ffba7141db0bfb4a3275b6e1bf4fb399800ed2
Reviewed-on: https://chromium-review.googlesource.com/500128Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45177}

This CL prevents problems with library libicui18n.so during execution
inspector tests when component is defined as shared library.

TEST=inspector/*
BUG=

Review-Url: https://codereview.chromium.org/2863383003
Cr-Commit-Position: refs/heads/master@{#45176}

Rolling v8/base/trace_event/common: https://chromium.googlesource.com/chromium/src/base/trace_event/common/+log/06294c8..39a3450

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/ab75dcc..db1fe5b

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/ada8f7c..a263e55

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

Change-Id: I89e1bbff7464eafdd8a34787e0d66adc5316467c
Reviewed-on: https://chromium-review.googlesource.com/499927Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45175}

This reverts commit 662aa425.

Reason for revert: Crashing on Canary
BUG=chromium:718891

Original change's description:
> Reland: [TypeFeedbackVector] Store optimized code in the vector
> 
> Since the feedback vector is itself a native context structure, why
> not store optimized code for a function in there rather than in
> a map from native context to code? This allows us to get rid of
> the optimized code map in the SharedFunctionInfo, saving a pointer,
> and making lookup of any optimized code quicker.
> 
> Original patch by Michael Stanton <mvstanton@chromium.org>
> 
> BUG=v8:6246
> TBR=yangguo@chromium.org,ulan@chromium.org
> 
> Change-Id: Ic83e4011148164ef080c63215a0c77f1dfb7f327
> Reviewed-on: https://chromium-review.googlesource.com/494487
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45084}

TBR=ulan@chromium.org,rmcilroy@chromium.org,yangguo@chromium.org,jarin@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
BUG=v8:6246

Change-Id: Idab648d6fe260862c2a0e35366df19dcecf13a82
Reviewed-on: https://chromium-review.googlesource.com/498633Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45174}

TBR=mlippautz@chromium.org

Review-Url: https://codereview.chromium.org/2867863002
Cr-Commit-Position: refs/heads/master@{#45173}

This reverts commit f7c25da6.

Reason for revert: Fixed

Original change's description:
> Revert "Introducing an event loop mechanism for d8."
> 
> This reverts commit de964dbe.
> 
> Reason for revert:
> https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/17958
> 
> Original change's description:
> > Introducing an event loop mechanism for d8.
> > 
> > This mechanism ensures APIs like wasm async complete their work, 
> > without requiring use of natives (%APIs).
> > 
> > The mechanism is similar to the one used in content_shell,
> > which should allow us to easily port tests in that environment.
> > 
> > Review-Url: https://codereview.chromium.org/2842843005
> > Cr-Original-Commit-Position: refs/heads/master@{#44908}
> > Bug: 
> > Change-Id: I9deee0d256a600c60b42902fc8ef8478e5546344
> > Reviewed-on: https://chromium-review.googlesource.com/494968
> > Commit-Queue: Mircea Trofin <mtrofin@google.com>
> > Reviewed-by: Jochen Eisinger <jochen@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#45165}
> 
> TBR=bradnelson@chromium.org,mtrofin@chromium.org,mtrofin@google.com,jochen@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> 
> Change-Id: Iafec2615d705d1990c57229cab3a988c00b5e12f
> Reviewed-on: https://chromium-review.googlesource.com/498630
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45166}

TBR=bradnelson@chromium.org,machenbach@chromium.org,mtrofin@chromium.org,mtrofin@google.com,jochen@chromium.org,v8-reviews@googlegroups.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: Ic3c782e918326e291a6cb9bb349c609e9a340b09
Reviewed-on: https://chromium-review.googlesource.com/498430Reviewed-by: Mircea Trofin <mtrofin@chromium.org>
Commit-Queue: Mircea Trofin <mtrofin@google.com>
Cr-Commit-Position: refs/heads/master@{#45172}

Intrinsic and generic lowering for generator object creation. In a follow-on, create lowering will be addressed.

BUG=v8:6352

Review-Url: https://codereview.chromium.org/2862213002
Cr-Commit-Position: refs/heads/master@{#45171}

This patch expands scope analysis to skip hole initialization
when it can be determined statically that no hole checks will
be generated at runtime.

Two conditions must be met to safely eliminate hole initialization:
  - There must not exist a VariableProxy referencing this Variable
    whose HoleCheckMode is kRequired
  - The Variable must be stack allocated; any other allocation implies
    that it may be accessed from not-yet-analyzed scopes (other modules,
    inner functions, or eval code) and that code may require
    hole checks.

The new logic required removing debug code in full-codegen which is
now incorrect in some cases.

Also fixed Variable's bitfield helpers to take no more space than needed.

Bug: chromium:651637
Change-Id: Ie5ac326af4e05b7a5c3c37cd4d0afba6a51a504d
Reviewed-on: https://chromium-review.googlesource.com/494006
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45170}

This reverts commit ec619cbd.

Reason for revert: Crashing on Canary
BUG=chromium:718891

Original change's description:
> [Interpreter] Transition JSFunctions to call optimized code when possible.
> 
> Now that the optimized code hangs off the feedback vector, it is possible
> to check whether a function has optimized code available every time it's
> called in the interpreter entry trampoline. If optimized code exists, the
> interpreter entry trampoline 'self-heals' the closure to point to the
> optimized code and links the closure into the optimized code list.
> 
> BUG=v8:6246
> 
> Change-Id: If1bd7c555bb0551bfe04b36baa6bcf949604717e
> Reviewed-on: https://chromium-review.googlesource.com/488026
> Reviewed-by: Michael Stanton <mvstanton@chromium.org>
> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45103}

TBR=rmcilroy@chromium.org,mvstanton@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
BUG=v8:6246

Change-Id: Ibda719be90fddf1d116c03a2a0c3018bcbe76018
Reviewed-on: https://chromium-review.googlesource.com/498632Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45169}

The code for UMA stats (in counters.h) is not thread safe, and can
lead to using pointers with uninitialized values.

Therefore, this CL turns them off when compiling asynchronously.

It also turns back on several UMA stats that were previously turned
off, but no longer need to because the code now knows if it is
running synchronously.

BUG=v8:6361

Review-Url: https://codereview.chromium.org/2864583004
Cr-Commit-Position: refs/heads/master@{#45168}

BUG=chromium:718484

Review-Url: https://codereview.chromium.org/2867073002
Cr-Commit-Position: refs/heads/master@{#45167}

This reverts commit de964dbe.

Reason for revert:
https://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/17958

Original change's description:
> Introducing an event loop mechanism for d8.
> 
> This mechanism ensures APIs like wasm async complete their work, 
> without requiring use of natives (%APIs).
> 
> The mechanism is similar to the one used in content_shell,
> which should allow us to easily port tests in that environment.
> 
> Review-Url: https://codereview.chromium.org/2842843005
> Cr-Original-Commit-Position: refs/heads/master@{#44908}
> Bug: 
> Change-Id: I9deee0d256a600c60b42902fc8ef8478e5546344
> Reviewed-on: https://chromium-review.googlesource.com/494968
> Commit-Queue: Mircea Trofin <mtrofin@google.com>
> Reviewed-by: Jochen Eisinger <jochen@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#45165}

TBR=bradnelson@chromium.org,mtrofin@chromium.org,mtrofin@google.com,jochen@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: Iafec2615d705d1990c57229cab3a988c00b5e12f
Reviewed-on: https://chromium-review.googlesource.com/498630Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45166}

This mechanism ensures APIs like wasm async complete their work, 
without requiring use of natives (%APIs).

The mechanism is similar to the one used in content_shell,
which should allow us to easily port tests in that environment.

Review-Url: https://codereview.chromium.org/2842843005
Cr-Original-Commit-Position: refs/heads/master@{#44908}
Bug: 
Change-Id: I9deee0d256a600c60b42902fc8ef8478e5546344
Reviewed-on: https://chromium-review.googlesource.com/494968
Commit-Queue: Mircea Trofin <mtrofin@google.com>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45165}

Another fix for more explicit management of ownership. The
CompilationHelper now always owns the WasmModule, and transfers
ownership to the generated WasmModuleWrapper (a Managed<WasmModule>)
once that object is created. Since the stored uniqe_ptr cannot be
accessed any more after this transfer, the creation of the
WasmModuleWrapper is delayed until it is really needed (step 5 in async
compilation).

R=ahaas@chromium.org

Change-Id: I22dea2e14a364ddf76751d97bd0d736a4c0ceff4
Reviewed-on: https://chromium-review.googlesource.com/498507Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45164}

Revert of [test] add --no-harness option to debugger tests. (patchset #1 id:1 of https://codereview.chromium.org/2831083003/ )

Reason for revert:
Should define its own NO_HARNESS_PATTERN. See comments.

Original issue's description:
> [test] add --no-harness option to debugger tests.
>
> Review-Url: https://codereview.chromium.org/2831083003
> Cr-Commit-Position: refs/heads/master@{#44774}
> Committed: https://chromium.googlesource.com/v8/v8/+/43c20d4cc566c68ce0b566cad0ac6fa92bba8eff

TBR=caitp@igalia.com,yangguo@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.

Review-Url: https://codereview.chromium.org/2871593002
Cr-Commit-Position: refs/heads/master@{#45163}

BUG=v8:6093

Change-Id: I612ad27bf0bcdc30a5d2f1f86a0c31b40ab4494d
Reviewed-on: https://chromium-review.googlesource.com/493348
Commit-Queue: Wiktor Garbacz <wiktorg@google.com>
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45162}

Since the wasm module is verified before starting execution with lazy
compilation, the compilation of individual functions should not fail
later.
This CL changes the implementation to check this condition earlier
and removes unused error paths.

R=ahaas@chromium.org, mstarzinger@chromium.org
BUG=chromium:719286

Change-Id: If4bab457a47f214b457b2e2bc8570cba8c8bbcfd
Reviewed-on: https://chromium-review.googlesource.com/497755Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45161}

Make ModuleResult and FunctionResult return Result<std::unique_ptr<X>>.
This makes memory ownership and transfer of ownership more clear and
avoids a lot of manual releases of the referenced native heap object.

R=ahaas@chromium.org

Change-Id: I7a3f5bd7761b6ae1ebdc7d17ff1b96a8df599871
Reviewed-on: https://chromium-review.googlesource.com/498352Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45160}

BUG=chromium:651354

Review-Url: https://codereview.chromium.org/2871543002
Cr-Commit-Position: refs/heads/master@{#45159}

We don't currently depend on this, but it might improve performance by
avoiding intermediate copies. The functions are already set up for
perfect forwarding, but without declaring the parameters as forwarding
references, this does not work as expected.

R=ahaas@chromium.org

Change-Id: I2c4d96ea1108b3f884d3e581e74c20aafd232934
Reviewed-on: https://chromium-review.googlesource.com/497409Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45158}

Inside the CompilationHelper, we were creating another compilation
helper to execute sequential or parallel compilation.
I don't see the reason to do so.

R=ahaas@chromium.org

Change-Id: Ib2c4486296a8f923e7e38620879c02963fff7d60
Reviewed-on: https://chromium-review.googlesource.com/497754Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45157}

With this CL we share code among the wasm fuzzers which construct a
module and run it in the interpreter and as compiled code.The fuzzers
themselves only contain the code now which creates the module and the
parameters.

BUG=v8:6325
R=eholk@chromium.org

Change-Id: I1c2d8b013531c86cb27837f1b8ec89d2688c536b
Reviewed-on: https://chromium-review.googlesource.com/490048
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Brad Nelson <bradnelson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45156}