This patch generalizes Object.observe callbacks and promise resolution into a FIFO queue called a "microtask queue".

It also exposes new V8 API which exposes the microtask queue to the embedder. In particular, it allows the embedder to

-schedule a microtask (EnqueueExternalMicrotask)
-run the microtask queue (RunMicrotasks)
-control whether the microtask queue is run automatically within V8 when the last script exits (SetAutorunMicrotasks).

R=dcarney@chromium.org, rossberg@chromium.org, dcarney, rossberg, svenpanne
BUG=

Review URL: https://codereview.chromium.org/154283002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19344 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r19323 (929c047)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/160713002

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19343 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ishell@chromium.org

Original CL: https://codereview.chromium.org/153823003

Review URL: https://codereview.chromium.org/153653007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19342 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

To properly do this, we'd have to iterate over CompareMaps (and their bodies) handling phis, until we have learned enough to decide which paths can be taken. For now, just disable learning from phis in loop headers.

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/147023005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19341 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3158
LOG=N
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/160633002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19340 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/160353003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19339 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/148063008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19338 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:2342
R=dcarney@chromium.org, yurys@chromium.org, yurys
LOG=N

Review URL: https://codereview.chromium.org/143283015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19333 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Make prev and next pointer in pages list AtomicWords and access them using acquire/release semantics.

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/150413009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19332 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

BUG=

Review URL: https://codereview.chromium.org/137863005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19331 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/153823003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19330 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/159513004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19329 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rodolph.perfetta@arm.com

Review URL: https://codereview.chromium.org/153823012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19328 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=danno@chromium.org

Review URL: https://codereview.chromium.org/138953017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19327 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This makes the evaluation order consistent between full codegen
and Hydrogen (so that deopt does not screw up stack).

R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/159983008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19326 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

 - Remove arch specific check macros
 - Remove duplicate code in code-stubs.h
 - Remove flag check in bootstrap.cc which was introduced for A64 bringup
 - Remove A64 specific test message expectations

R=rodolph.perfetta@arm.com, ulan@chromium.org

Review URL: https://codereview.chromium.org/134333011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19325 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/156603007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19324 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/155843006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19323 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/152953004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19322 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
TBR=ulan@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/160353002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19321 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/157033012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19320 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Notes:
- PreParser::Scope was a weird combination of Parser::FunctionState and
  Scope. Split it into two (PreParser::FunctionState and PreParser::Scope). This
  is necessary for unifying the Parser and the PreParser.
- Scopes take care of language mode and tracking "with".
- FunctionStates take care of counting material literal indexes, properties
  etc. and tracking generators.
- PreParser::Scope::InsideWith was a hack to make a FunctionState-like object
  take care of tracking "with". It's now the responsibility fo PreParser::Scope
  and Scope.
- PreParser::ScopeType is unnecessarly, there is already a ScopeType enum in
v8globals.h.
- Renamed scope stack variables so that they're consistent in Parser and PreParser.
- Parser::FunctionState and Parser::BlockState had an unnecessary dependency to
  the Parser; they only need a couple of things from Parser. Broke the
  dependency.

R=ulan@chromium.org
BUG=v8:3126
LOG=N

Review URL: https://codereview.chromium.org/148293011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19319 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=ulan@chromium.org
BUG=none
LOG=n

Review URL: https://codereview.chromium.org/160073007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19318 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This change is trivial (was probably overlooked when ParserBase was created).

R=yangguo@chromium.org
BUG=v8:3126
LOG=N

Review URL: https://codereview.chromium.org/150943008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19317 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- For the LDP/STP TODO: The arguments need dereferencing, so using LDP/STP would
  require some additional checks.
- For the constant pools TODO: Unless we need to, there is no benefit from
  trying to generate constant pools more often, as it would likely only pollute
  the I-cache.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/151363004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19316 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/134083011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19315 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=ulan@chromium.org
BUG=none
LOG=n

Review URL: https://codereview.chromium.org/160303003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19314 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3113
LOG=Y
R=jochen@chromium.org, rmcilroy@chromium.org, rodolph.perfetta@arm.com

Review URL: https://codereview.chromium.org/148293020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19311 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

More information: https://code.google.com/p/v8/issues/detail?id=3150

R=machenbach@chromium.org

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19306 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org
TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/156853008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19303 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

More check elimination improvements including partial learning on false branches of CompareMap and better handling of unreachable blocks.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/159963002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19300 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/159833002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19290 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/158723006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19289 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=338425
LOG=N
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/152923006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19288 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/159013003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19287 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/137213009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19285 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

BUG=

Review URL: https://codereview.chromium.org/154283003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19278 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/154113010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19277 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org
BUG=v8:3126
LOG=N

Review URL: https://codereview.chromium.org/156423005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19273 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jarin@chromium.org
BUG=v8:3141
LOG=N

Review URL: https://codereview.chromium.org/159353003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19272 ce2b1a6d-e550-0410-aec6-3dcde31c8c00