TEST=
BUG=

Review URL: https://codereview.chromium.org/1124023005

Cr-Commit-Position: refs/heads/master@{#28315}

This should not be done during typed lowering, but should be part of a
dedicated truncation/conversion analysis.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1132773002

Cr-Commit-Position: refs/heads/master@{#28314}

BUG=484544
LOG=n

Review URL: https://codereview.chromium.org/1132763002

Cr-Commit-Position: refs/heads/master@{#28313}

TurboFan compilation was committing dependencies long before the
optimized function made it's way into the optimized code list for
the native context. The problem is that once the code pointer is out
there in dependency arrays, it is eligible for deopt. But the deopt
logic needs the code to be in the optimized code list to fully do it's
job.

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1136693003

Cr-Commit-Position: refs/heads/master@{#28312}

Instead of making them an extra option that gets passed in and compiled
at the end of the natives file for a given run of js2c, we now make them a
separate run of js2c with a separate natives file output.

This natives file output is then compiled in the bootstrapper. It is not part
of the snapshot (yet), but instead is treated similar to the experimental
natives, just without any of the complexity that comes from tieing the
behavior to flags. We also don't need counterparts to
InitializeExperimentalGlobal and InstallExperimentalNativeFunctions (yet?).

This fixes the issue with https://codereview.chromium.org/1129743003 by making
the dummy file that is generated for snapshots with no extras (or no experimental
features) nonempty.

R=yangguo@chromium.org, jochen@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1130993003

Cr-Commit-Position: refs/heads/master@{#28311}

The Float32Abs and Float64Abs operators are supported by all TurboFan
backends, so we no longer need the flags for them.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1132033002

Cr-Commit-Position: refs/heads/master@{#28310}

Revert of Allow loading holes from holey smi arrays (patchset #2 id:20001 of https://codereview.chromium.org/1134483002/)

Reason for revert:
Shouldn't unconditionally load holes since it tanks performance. I'll change it in a follow-up to only do it if the IC ever saw it happen.

Original issue's description:
> Allow loading holes from holey smi arrays
>
> BUG=
>
> Committed: https://crrev.com/eab5bb5390fab79d063f29398377c6d181963dde
> Cr-Commit-Position: refs/heads/master@{#28298}

TBR=mvstanton@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1131203002

Cr-Commit-Position: refs/heads/master@{#28309}

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/1127193003

Cr-Commit-Position: refs/heads/master@{#28308}

Reason for revert:

   original commit was reverted.

   This reverts commit c3529ce5.

   original issues's description:

   > X87: Resolve references to "this" the same way as normal variables
   >
   > port 06a792b7 (r28263).
   >
   > original commit message:
   >
   >  Make the parser handle references to "this" as unresolved variables, so the
   >  same logic as for the rest of function parameters is used for the receiver.
   >  Minor additions to the code generation handle copying the receiver to the
   >  context, along with the rest of the function parameters.
   >
   >  Based on work by Adrian Perez de Castro <aperez@igalia.com>

BUG=

Review URL: https://codereview.chromium.org/1130913005

Cr-Commit-Position: refs/heads/master@{#28307}

Rolling v8/buildtools to b0ede9c89f9d5fbe5387d961ad4c0ec665b6c821

Rolling v8/tools/clang to bda3bddc01a91a513ec245ed1079b31cf5d7ded3

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1124223005

Cr-Commit-Position: refs/heads/master@{#28306}

Revert of PPC: Resolve references to "this" the same way as normal variables (patchset #1 id:1 of https://codereview.chromium.org/1129803003/)

Reason for revert:
Original commit was reverted.

Original issue's description:
> PPC: Resolve references to "this" the same way as normal variables
>
> Port 18619d35
>
> Original commit message:
> Make the parser handle references to "this" as unresolved variables, so the
> same logic as for the rest of function parameters is used for the receiver.
> Minor additions to the code generation handle copying the receiver to the
> context, along with the rest of the function parameters.
>
> Based on work by Adrian Perez de Castro <aperez@igalia.com>.
>
> R=wingo@igalia.com, dstence@us.ibm.com,  michael_dawson@ca.ibm.com
> BUG=
>
> Committed: https://crrev.com/e0ec097b2f49c4c99a2e9490f4b1a09e02abfd4d
> Cr-Commit-Position: refs/heads/master@{#28272}

TBR=dstence@us.ibm.com,michael_dawson@ca.ibm.com,wingo@igalia.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1132513005

Cr-Commit-Position: refs/heads/master@{#28305}

R=jochen@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1137473002

Cr-Commit-Position: refs/heads/master@{#28304}

BUG=
TEST=mjsunit/asm/embenchen/lua_binarytrees

Review URL: https://codereview.chromium.org/1127393003

Cr-Commit-Position: refs/heads/master@{#28303}

BUG=chromium:485534
R=yangguo@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1130063004

Cr-Commit-Position: refs/heads/master@{#28302}

BUG=v8:3578
LOG=Y
R=adamk@chromium.org, dslomov@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/1128273002

Cr-Commit-Position: refs/heads/master@{#28301}

While the mutator is active, the idle time handler optimizes for latency by doing only incremental steps and scavenges.

When the mutator becomes inactive, the idle time handler forces few incremental GCs to reclaim memory and then stops until mutator is active again.

BUG=460090
LOG=N

Review URL: https://codereview.chromium.org/1105293004

Cr-Commit-Position: refs/heads/master@{#28300}

Revert of Make V8 extras a separate type of native (patchset #4 id:60001 of https://codereview.chromium.org/1129743003/)

Reason for revert:
https://build.chromium.org/p/client.v8/builders/V8-Blink%20Linux%2064%20%28dbg%29/builds/2745

Original issue's description:
> Make V8 extras a separate type of native
>
> Instead of making them an extra option that gets passed in and compiled
> at the end of the natives file for a given run of js2c, we now make them a
> separate run of js2c with a separate natives file output.
>
> This natives file output is then compiled in the bootstrapper. It is not part
> of the snapshot (yet), but instead is treated similar to the experimental
> natives, just without any of the complexity that comes from tieing the
> behavior to flags. We also don't add counterparts to
> InitializeExperimentalGlobal and InstallExperimentalNativeFunctions, yet.
>
> R=yangguo@chromium.org, jochen@chromium.org
> BUG=
>
> Committed: https://crrev.com/c93aff4ac63ad9ffb6318e750335208de32b7902
> Cr-Commit-Position: refs/heads/master@{#28296}

TBR=jochen@chromium.org,yangguo@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1131903002

Cr-Commit-Position: refs/heads/master@{#28299}

BUG=

Review URL: https://codereview.chromium.org/1134483002

Cr-Commit-Position: refs/heads/master@{#28298}

BUG=chromium:485472
LOG=NO
TBR=jochen@chromium.org

Review URL: https://codereview.chromium.org/1128363003

Cr-Commit-Position: refs/heads/master@{#28297}

Instead of making them an extra option that gets passed in and compiled
at the end of the natives file for a given run of js2c, we now make them a
separate run of js2c with a separate natives file output.

This natives file output is then compiled in the bootstrapper. It is not part
of the snapshot (yet), but instead is treated similar to the experimental
natives, just without any of the complexity that comes from tieing the
behavior to flags. We also don't add counterparts to
InitializeExperimentalGlobal and InstallExperimentalNativeFunctions, yet.

R=yangguo@chromium.org, jochen@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1129743003

Cr-Commit-Position: refs/heads/master@{#28296}

Chromium tests were prepared in https://codereview.chromium.org/1118743003/ and https://codereview.chromium.org/1135493002/.
Blink tests in https://codereview.chromium.org/1115193002/

LOG=Y
BUG=chromium:480652
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1127363002

Cr-Commit-Position: refs/heads/master@{#28295}

NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1136443002

Cr-Commit-Position: refs/heads/master@{#28294}

TBR=machenbach@chromium.org
NOTREECHECKS=true

Review URL: https://codereview.chromium.org/1130183002

Cr-Commit-Position: refs/heads/master@{#28293}

This introduces V8.MemoryHeapCommitted and V8.MemoryHeapUsed histograms.

In contrast to the existing memory histograms, the new histograms are uniform in time, i.e. their samples happen at regular time intervals. The --histogram-interval specifies the length of the interval.

We implement this by linearly interpolating memory stats between GC and idle notification events.

BUG=chromium:485472
LOG=NO

Review URL: https://codereview.chromium.org/1125683004

Cr-Commit-Position: refs/heads/master@{#28292}

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/1130783002

Cr-Commit-Position: refs/heads/master@{#28291}

Cr-Commit-Position: refs/heads/master@{#28290}

Rolling v8/tools/clang to 52a578929068131eb73e907fdd6e2600e0d3180c

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1133463003

Cr-Commit-Position: refs/heads/master@{#28289}

Revert of Use CLOCK_REALTIME_COARSE when available. (patchset #3 id:40001 of https://codereview.chromium.org/1125003002/)

Reason for revert:
[Sheriff] This causes layout test crashes:
http://build.chromium.org/p/client.v8/builders/V8-Blink%20Linux%2064%20%28dbg%29/builds/2735

You can add the trybot v8_linux_layout_dbg on reland.

Original issue's description:
> Use CLOCK_REALTIME_COARSE when available.
>
> On systems that have CLOCK_REALTIME_COARSE with good enough resolution, we can
> avoid making a system call to get the current time; it's serviced from the vDSO.
>
> BUG=
> LOG=N
>
> Committed: https://crrev.com/537ed7500c087786f28f51ff5222f1c2113776d3
> Cr-Commit-Position: refs/heads/master@{#28280}

TBR=jochen@chromium.org,deanm@chromium.org,bmeurer@chromium.org,ben@strongloop.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1130083003

Cr-Commit-Position: refs/heads/master@{#28288}

Revert of Revert of Wrap runtime.js in a function. (patchset #1 id:1 of https://codereview.chromium.org/1123353004/)

Reason for revert:
Failing test has been fixed.

Original issue's description:
> Revert of Wrap runtime.js in a function. (patchset #2 id:20001 of https://codereview.chromium.org/1126213002/)
>
> Reason for revert:
> [Sheriff] Breaks nosnap:
> http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap/builds/2872
>
> Original issue's description:
> > Wrap runtime.js in a function.
> >
> > R=jkummerow@chromium.org
> >
> > Committed: https://crrev.com/65c56d49b2d671ac9e379de726bff3eb03a508c1
> > Cr-Commit-Position: refs/heads/master@{#28275}
>
> TBR=jkummerow@chromium.org,yangguo@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Committed: https://crrev.com/62bd294f909ff448d0f876a3d745966a24cdc3f7
> Cr-Commit-Position: refs/heads/master@{#28277}

TBR=jkummerow@chromium.org,machenbach@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1131843002

Cr-Commit-Position: refs/heads/master@{#28287}

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1132493002

Cr-Commit-Position: refs/heads/master@{#28286}

Revert of Remove Scope::scope_uses_this_ flag (patchset #1 id:1 of https://codereview.chromium.org/1129823002/)

Reason for revert:
The reason for reverting is: [Sheriff] Need to fix compilation after this revert:
https://chromium.googlesource.com/v8/v8/+/5cab6be83a44567a3ee5747d728a399025d38411

Original issue's description:
> Remove Scope::scope_uses_this_ flag
>
> Use of the "this" variable is now tracked using scopes, like any other variable.
>
> R=arv@chromium.org
> LOG=N
> BUG=
>
> Committed: https://crrev.com/afba55965118d9ba57e53c729f52be2340e626e0
> Cr-Commit-Position: refs/heads/master@{#28268}

TBR=arv@chromium.org,wingo@igalia.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1131713004

Cr-Commit-Position: refs/heads/master@{#28285}

Revert of Remove Scope::scope_uses_arguments_ flag (patchset #1 id:1 of https://codereview.chromium.org/1124233002/)

Reason for revert:
[Sheriff] Need to fix compilation after this revert:
https://chromium.googlesource.com/v8/v8/+/5cab6be83a44567a3ee5747d728a399025d38411

Original issue's description:
> Remove Scope::scope_uses_arguments_ flag
>
> Use of arguments is tracked as a variable, like any other variable.
>
> R=arv@chromium.org
> LOG=N
> BUG=
>
> Committed: https://crrev.com/d4ea33f480243fb5b7d2cca6edddcaa3e9478e29
> Cr-Commit-Position: refs/heads/master@{#28271}

TBR=arv@chromium.org,wingo@igalia.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1134453002

Cr-Commit-Position: refs/heads/master@{#28284}

Revert of Resolve references to "this" the same way as normal variables (patchset #2 id:20001 of https://codereview.chromium.org/1130733003/)

Reason for revert:
[Sheriff] Breaks jetstream benchmark with errors like this:

>>> Running suite: JetStream/bigfib.cpp
>>> Stdout (#1):
undefined:93: ReferenceError: this is not defined
  this['Module'] = Module;
  ^
ReferenceError: this is not defined
    at eval (eval at __run (runner.js:13:3), <anonymous>:93:3)
    at eval (native)
    at __run (runner.js:13:3)
    at Object.runSimpleBenchmark (runner.js:44:31)
    at runner.js:97:13

Original issue's description:
> Resolve references to "this" the same way as normal variables
>
> Make the parser handle references to "this" as unresolved variables, so the
> same logic as for the rest of function parameters is used for the receiver.
> Minor additions to the code generation handle copying the receiver to the
> context, along with the rest of the function parameters.
>
> Based on work by Adrian Perez de Castro <aperez@igalia.com>.
>
> BUG=v8:2700
> LOG=N
>
> Committed: https://crrev.com/06a792b7cc2db33ffce7244c044a9c05afbb6116
> Cr-Commit-Position: refs/heads/master@{#28263}

TBR=rossberg@chromium.org,arv@chromium.org,wingo@igalia.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:2700

Review URL: https://codereview.chromium.org/1129723003

Cr-Commit-Position: refs/heads/master@{#28283}

NOTRY=true
TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/1130123002

Cr-Commit-Position: refs/heads/master@{#28282}

Allows for getting rid of the special casing for float64 and is probably
faster.

BUG=v8:3996
R=verwaest@chromium.org,dslomov@chromium.org,plind44@gmail.com
LOG=n

Review URL: https://codereview.chromium.org/1128433006

Cr-Commit-Position: refs/heads/master@{#28281}

On systems that have CLOCK_REALTIME_COARSE with good enough resolution, we can
avoid making a system call to get the current time; it's serviced from the vDSO.

BUG=
LOG=N

Review URL: https://codereview.chromium.org/1125003002

Cr-Commit-Position: refs/heads/master@{#28280}

port 7798548a (r28260)

original commit message:

    typeof was implemented as a runtime function. Calling it in
    optimized code with a non-constant input becomes burdensome.

BUG=

Review URL: https://codereview.chromium.org/1124263005

Cr-Commit-Position: refs/heads/master@{#28279}

port 06a792b7 (r28263).

original commit message:

    Make the parser handle references to "this" as unresolved variables, so the
    same logic as for the rest of function parameters is used for the receiver.
    Minor additions to the code generation handle copying the receiver to the
    context, along with the rest of the function parameters.

    Based on work by Adrian Perez de Castro <aperez@igalia.com>

BUG=

Review URL: https://codereview.chromium.org/1124393002

Cr-Commit-Position: refs/heads/master@{#28278}

Revert of Wrap runtime.js in a function. (patchset #2 id:20001 of https://codereview.chromium.org/1126213002/)

Reason for revert:
[Sheriff] Breaks nosnap:
http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap/builds/2872

Original issue's description:
> Wrap runtime.js in a function.
>
> R=jkummerow@chromium.org
>
> Committed: https://crrev.com/65c56d49b2d671ac9e379de726bff3eb03a508c1
> Cr-Commit-Position: refs/heads/master@{#28275}

TBR=jkummerow@chromium.org,yangguo@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1123353004

Cr-Commit-Position: refs/heads/master@{#28277}

R=jochen@chromium.org
BUG=chromium:485155
LOG=y

Review URL: https://codereview.chromium.org/1124293002

Cr-Commit-Position: refs/heads/master@{#28276}