This patch adds the copyWithin method to TypedArrays. For the first
pass, the internals of Array.copyWithin are used. Eventually, a more
efficient form based on memcpy could be used instead.

BUG=v8:3578
LOG=Y
R=adamk@chromium.org, arv@chromium.org, caitpotter88@gmail.com

Review URL: https://codereview.chromium.org/1131113002

Cr-Commit-Position: refs/heads/master@{#28381}

TBR=arv@chromium.org

Review URL: https://codereview.chromium.org/1129713004

Cr-Commit-Position: refs/heads/master@{#28380}

This is a follow up to https://codereview.chromium.org/1115263004/

BUG=v8:3956
LOG=N
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/1141603002

Cr-Commit-Position: refs/heads/master@{#28379}

BUG=chromium:486005
LOG=NO

Review URL: https://codereview.chromium.org/1131943004

Cr-Commit-Position: refs/heads/master@{#28378}

R=arv@chromium.org,verwaest@chromium.org
BUG=v8:4097
LOG=N

Review URL: https://codereview.chromium.org/1132203005

Cr-Commit-Position: refs/heads/master@{#28377}

BUG=

Review URL: https://codereview.chromium.org/1132493006

Cr-Commit-Position: refs/heads/master@{#28376}

Do not trash type register in kIsNotStringMask test.

R=conradw@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1124333013

Cr-Commit-Position: refs/heads/master@{#28375}

Fix build break.

R=conradw@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1130603004

Cr-Commit-Position: refs/heads/master@{#28374}

BUG=

Review URL: https://codereview.chromium.org/1138493004

Cr-Commit-Position: refs/heads/master@{#28373}

Port 3bce9c3a

Original commit message:
HMaybeGrowElements moves the situation where you actually have to grow
into deferred code. This means crankshaft doesn't have to spill registers
just to make the bounds comparison to see if it'll need to grow or not.

It makes the growing case a bit more expensive, but reduces the cost of
the general case.

R=mvstanton@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1132743004

Cr-Commit-Position: refs/heads/master@{#28372}

Some of the DevTools' clients need to inspect JS objects without enabling debugger. This CL allows to inspect object's internal properties without enabling debugger and instantiating debug context.

Note that now debug context can be created lazily if v8::Debug::GetDebugContext is called when there is no debug listener. This is fragile and has already resulted in some subtle error. I'm going to fix that in a separate CL.

BUG=chromium:481845
LOG=Y

Review URL: https://codereview.chromium.org/1134193002

Cr-Commit-Position: refs/heads/master@{#28371}

Implements the strong mode proposal's restrictions on implicit conversions
for the binary >, >=, <, and <= operators.

BUG=v8:3956
LOG=N

Review URL: https://codereview.chromium.org/1130283002

Cr-Commit-Position: refs/heads/master@{#28370}

Mark internal AccessorInfo properties as "special data properties" to ensure correct strict-mode handling.

BUG=

Review URL: https://codereview.chromium.org/1123163005

Cr-Commit-Position: refs/heads/master@{#28369}

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

Review URL: https://codereview.chromium.org/1137143003

Cr-Commit-Position: refs/heads/master@{#28368}

Review URL: https://codereview.chromium.org/1138173002

Cr-Commit-Position: refs/heads/master@{#28367}

R=mvstanton@chromium.org

Committed: https://crrev.com/8608e619afe2b4514b0577bfb73a153b1550d41f
Cr-Commit-Position: refs/heads/master@{#28357}

Review URL: https://codereview.chromium.org/1126043004

Cr-Commit-Position: refs/heads/master@{#28366}

Revert of Provide accessor for object internal properties that doesn't require debugger to be active (patchset #3 id:40001 of https://codereview.chromium.org/1126103006/)

Reason for revert:
GC mole issues: https://chromegw.corp.google.com/i/client.v8/builders/V8%20Linux%20-%20gcmole/builds/1950/steps/GCMole%20ia32/logs/stdio

Original issue's description:
> Provide accessor for object internal properties that doesn't require debugger to be active
>
> Some of the DevTools' clients need to inspect JS objects without enabling debugger. This CL allows to inspect object's internal properties without enabling debugger and instantiating debug context.
>
> Note that now debug context can be created lazily if v8::Debug::GetDebugContext is called when there is no debug listener. This is fragile and has already resulted in some subtle error. I'm going to fix that in a separate CL.
>
> BUG=chromium:481845
> LOG=Y
>
> Committed: https://crrev.com/bdeb0de88c8cf5f2c78f261b45314138f525110d
> Cr-Commit-Position: refs/heads/master@{#28362}

TBR=pfeldman@chromium.org,kozyatinskiy@chromium.org,yurys@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:481845

Review URL: https://codereview.chromium.org/1133243002

Cr-Commit-Position: refs/heads/master@{#28365}

Handle missing or improper FrameStates more gracefully.
Uses the operator properties to determine if the node contains a FrameState
before, then checks if a valid bailout id exists.

R=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1135243002

Cr-Commit-Position: refs/heads/master@{#28364}

[turbofan] Add AdvancedReducer::ReplaceWithValue() method and convert JSInlining to an AdvancedReducer.

Note that this is just a duplication for now. We'll want to get rid of the
NodeProperties::ReplaceWithValue() method in the long run.

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1135483004

Cr-Commit-Position: refs/heads/master@{#28363}

Some of the DevTools' clients need to inspect JS objects without enabling debugger. This CL allows to inspect object's internal properties without enabling debugger and instantiating debug context.

Note that now debug context can be created lazily if v8::Debug::GetDebugContext is called when there is no debug listener. This is fragile and has already resulted in some subtle error. I'm going to fix that in a separate CL.

BUG=chromium:481845
LOG=Y

Review URL: https://codereview.chromium.org/1126103006

Cr-Commit-Position: refs/heads/master@{#28362}

[turbofan] Use FrameStatesBeforeAndAfter to simplify handling of before/after frame states in AstGraphBuilder.

R=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1128193005

Cr-Commit-Position: refs/heads/master@{#28361}

In follow-up CLs the scavenger and the MC collector should also respect the unalignment of heap numbers.

BUG=

Review URL: https://codereview.chromium.org/1141523002

Cr-Commit-Position: refs/heads/master@{#28360}

HMaybeGrowElements moves the situation where you actually have to grow
into deferred code. This means crankshaft doesn't have to spill registers
just to make the bounds comparison to see if it'll need to grow or not.

It makes the growing case a bit more expensive, but reduces the cost of
the general case.

BUG=chromium:484025
LOG=N

Review URL: https://codereview.chromium.org/1124443004

Cr-Commit-Position: refs/heads/master@{#28359}

Revert of Migrate error messages, part 10. (patchset #2 id:20001 of https://codereview.chromium.org/1126043004/)

Reason for revert:
patch didn't apply correctly.

Original issue's description:
> Migrate error messages, part 10.
>
> R=mvstanton@chromium.org
>
> Committed: https://crrev.com/8608e619afe2b4514b0577bfb73a153b1550d41f
> Cr-Commit-Position: refs/heads/master@{#28357}

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

Review URL: https://codereview.chromium.org/1130073005

Cr-Commit-Position: refs/heads/master@{#28358}

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/1126043004

Cr-Commit-Position: refs/heads/master@{#28357}

If there had been no debug listener v8::Debug::GetDebugContext would have created new context and wouln't have kept reference to it. This way we may well end up with several debug contexts and disabled debugger.

As a side effect this change allows to efficiently distinguish debug context from blink contexts by simply comparing handles.

BUG=chromium:482290
LOG=Y

Review URL: https://codereview.chromium.org/1136733002

Cr-Commit-Position: refs/heads/master@{#28356}

Revert of Use function wrapper argument to expose internal arrays to native scripts. (patchset #2 id:20001 of https://codereview.chromium.org/1127983003/)

Reason for revert:
custom snapshot builder failing.

Original issue's description:
> Use function wrapper argument to expose internal arrays to native scripts.
>
> R=jkummerow@chromium.org
>
> Committed: https://crrev.com/a9b5a1795449d94387218d25baed2c2b3c4fbadc
> Cr-Commit-Position: refs/heads/master@{#28354}

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

Review URL: https://codereview.chromium.org/1123353008

Cr-Commit-Position: refs/heads/master@{#28355}

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1127983003

Cr-Commit-Position: refs/heads/master@{#28354}

Embedders need to always pass CreateParams now

BUG=none
LOG=y
R=vogelheim@chromium.org

Review URL: https://codereview.chromium.org/1133723004

Cr-Commit-Position: refs/heads/master@{#28353}

Rolling v8/buildtools to b73e5f70d7ac6be98fb2555461f631afc90216ce

Rolling v8/third_party/icu to ce41627e388fb46ab49671bd16a5db81dcd75a71

Rolling v8/tools/clang to 6e259b4afbbd784a775e47f37379e57f002bf0c2

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1124083005

Cr-Commit-Position: refs/heads/master@{#28352}

The idea is to make this the model for future TypedArray methods.
A possible downside could be lower array method performance
if everything gets polymorhpic (but if enough inlining happens, it
should still be fast), but on the upside, this change means that
the TypedArray methods won't create as much code size bloat.

BUG=v8:3578
LOG=Y
R=adamk@chromium.org
CC=arv@chromium.org, caitpotter88@gmail.com

Review URL: https://codereview.chromium.org/1133503003

Cr-Commit-Position: refs/heads/master@{#28351}

Port 3226e980

BUG=

Review URL: https://codereview.chromium.org/1129323007

Cr-Commit-Position: refs/heads/master@{#28350}

BUG=v8:4007
LOG=N
R=

Review URL: https://codereview.chromium.org/1128873006

Cr-Commit-Position: refs/heads/master@{#28349}

Port 3226e980

Original commit message:
In strong mode it is an error to call a function with too few
arguments.

This is enforced inside the ArgumentsAdaptorTrampoline.

This does not yet handle rest parameters

R=arv@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1132153003

Cr-Commit-Position: refs/heads/master@{#28348}

Port abc35080

BUG=

Review URL: https://codereview.chromium.org/1133103003

Cr-Commit-Position: refs/heads/master@{#28347}

In strong mode it is an error to call a function with too few
arguments.

This is enforced inside the ArgumentsAdaptorTrampoline.

This does not yet handle rest parameters

BUG=v8:3956
LOG=N
R=rossberg@chromium.org, dslomov@chromium.org

Review URL: https://codereview.chromium.org/1115263004

Cr-Commit-Position: refs/heads/master@{#28346}

This patch:
  - Refactors Parser::ParseVariableDeclarations
  - Introduces Parser::PatternMatcher class
  - Implements matching a single variable pattern
  - Implements rudimentary matching against object literal pattern
    as a proof of concept

R=arv@chromium.org,rossberg@chromium.org
BUG=v8:811
LOG=N

Review URL: https://codereview.chromium.org/1130623004

Cr-Commit-Position: refs/heads/master@{#28345}

R=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1139733002

Cr-Commit-Position: refs/heads/master@{#28344}

R=rossberg@chromium.org
LOG=N
BUG=

Review URL: https://codereview.chromium.org/1128963005

Cr-Commit-Position: refs/heads/master@{#28343}

Port bd56d279

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>.

This is a reapplication of https://codereview.chromium.org/1130733003.

R=wingo@igalia.com, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1134073003

Cr-Commit-Position: refs/heads/master@{#28342}