Reason for revert: New test crashes on nosnap bots

> See https://github.com/joyent/node/issues/7120
>
> R=jarin@chromium.org
> BUG=
>
> Review URL: https://codereview.chromium.org/178073002
>
> Patch from Alexis Campailla <alexis@janeasystems.com>.

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

Review URL: https://codereview.chromium.org/217013002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20337 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r20330 for breaking arm64 nosnap tests.

TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/216993002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20336 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

See https://github.com/joyent/node/issues/7120

R=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/178073002

Patch from Alexis Campailla <alexis@janeasystems.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20335 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- GenericStringUtf16CharacterStream::start_position_ was unused.
- GenericStringUtf16CharacterStream inherits from BufferedUtf16CharacterStream,
so no need to initialize buffer_cursor_ and buffer_end_ twice (this makes it
clearer which class in the inheritance chain takes care of which variables).

R=yangguo@chromium.org
BUG=

Review URL: https://codereview.chromium.org/216523004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20334 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/216873004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20333 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The Isolate* member of ParserBase::FunctionState was only used by
Parser. Removing it makes it clear that there are no isolates in
PreParser. (There's also no Zone, since PreParserTraits::Type::Zone is void.)

R=yangguo@chromium.org
BUG=

Review URL: https://codereview.chromium.org/216883003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20331 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=hpayer@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/212603014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20330 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/214753002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20329 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/216643002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20328 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Runtime::GetObjectProperty:
  - handled string.charAt, element access and property access
  - now handlified
GetProperty in handles.cc:
  - called to Runtime::GetObjectProperty
  - now removed
Object::GetProperty (handlified version):
  - handled element access and property access
  - now changed to only do property access
New: Object::GetPropertyOrElement:
  - handles element access and property access

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/210953005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20327 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- Use the surrounding map (instead of Traits::Impl) for weak callback.
- Provide for a fast reference to a mapped value.
- Restructure Traits to accomondate for the first point above.

[Why?] As discussed, I proceeded to replace Impl with the map.
The problem I encountered with that version is that now the
Traits class depends on itself: The weak-related methods require the
map type in their signature. But the map type includes the Traits class
and hence the Traits class method signatures depend on the specific Traits class. That
makes them practically un-derivable: While you can derive a Traits class
from another one, since the compiler now expects methods with a different
signature. To accommodate, I pulled the dispose traits into the weak traits
class. I also removed the Impl*/MapType* parameter from the Dispose call,
since no implementation seems to need it.

R=dcarney@chromium.org
BUG=

Review URL: https://codereview.chromium.org/212893007

Patch from Daniel Vogelheim <vogelheim@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20326 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3213
LOG=Y
R=alph@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/197513005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20325 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The deopt will not happen in production code, since we check that
lengths of fixed typed arrays are smis before calling
TypedArrayInitialze, but that makes deopt bot happy.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/212643016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20324 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also make the date cache's timestamp more robust.

BUG=357362
R=svenpanne@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/216613003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20323 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/212603013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20322 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Reland r20308 (reverted by r20310).

TBR=verwaest@chromium.org

Review URL: https://codereview.chromium.org/216383003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20321 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/214493002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20320 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/213413010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20317 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also added comments to remind us why we were using the hole here in the first
place (it's used for the case where Object.observe, rather than Array.observe,
has been called on Array that's undergoing truncation).

BUG=356589
LOG=N
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/213823002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20316 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/212553008

Patch from Haitao Feng <haitao.feng@intel.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20315 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org
BUG=

Review URL: https://codereview.chromium.org/214903002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20314 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org
BUG=

Committed: https://code.google.com/p/v8/source/detail?r=20211

Review URL: https://codereview.chromium.org/206163004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20313 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/212573007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20312 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts r20307.

TBR=jarin@chromium.org

Review URL: https://codereview.chromium.org/214593005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20311 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit 4cf47a20b4846cf050ea4844433e9c57654da34e.

BUG=

Review URL: https://codereview.chromium.org/214893002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20310 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org
BUG=

Review URL: https://codereview.chromium.org/212553009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20309 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

With this fix, we only create the enum cache for own property descriptors (originally we cached all descriptors in the map).  The problem was that the size of all descriptors could be trimmed during GC triggered by allocating the storage for the cache, so we could have ended up with a wrong storage size.

This is really Toon's fix, I have only created a small repro case.

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/212673011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20308 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=dslomov@google.com, dslomov@chromium.org

Review URL: https://codereview.chromium.org/212763008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20307 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/198633002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20305 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This change makes the reference itself a strong one. We will also need a special handling to make references from MapCache object to Map weak in the heap snapshots. The latter will be addressed separately.

BUG=chromium:357060
LOG=Y
R=alph@chromium.org, hpayer@chromium.org

Review URL: https://codereview.chromium.org/214683002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20304 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Use acquire/release stores and loads when reading and writing the parallel sweeping state of a page.

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/214543008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20301 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org
BUG=357108
LOG=N

Review URL: https://codereview.chromium.org/214543003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20300 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/214413006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20299 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/212793011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20298 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/214473003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20297 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/201303007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20296 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/210773003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20295 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/171683007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20294 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts r20292 due to no-snapshot failures.

TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/214413005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20293 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This fixes a bug introduced in r20179.

R=jkummerow@chromium.org
BUG=356211
LOG=N

Review URL: https://codereview.chromium.org/213193011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20292 ce2b1a6d-e550-0410-aec6-3dcde31c8c00