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Author SHA1 Message Date
adamk@chromium.org
9f86a91e76 Teach OrderedHashSet::Remove to report whether it actually removed anything 
This avoids an unnecessary runtime call from Set.prototype.delete().

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/290733008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21408 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-21 12:16:47 +00:00
jochen@chromium.org
6d2a51965a Comment out not yet used flags from BUILD.gn 
gn started to complain about unused variables

BUG=none
R=dcarney@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/292263003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21405 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-21 11:57:33 +00:00
jarin@chromium.org
02f1a1b987 Revert "Fix Heap::IsHeapIterable." (again) 
This reverts commit r21397.

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/299813002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21404 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-21 09:49:18 +00:00
adamk@chromium.org
fa55c02b11 Allow debugger to step into Map and Set forEach callbacks 
BUG=v8:3341
LOG=Y
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/293083005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21403 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-21 09:25:50 +00:00
jkummerow@chromium.org
d4d4d30204 Stop using urllib.urlretrieve() directly. 
Using urllib for SSL connections when behind a proxy is known to be
broken, so apply the same fix from depot_tools r149742 and use a wrapper
around urllib2 instead.

R=jkummerow@chromium.org
TEST=run test262 behind corporate proxy

Review URL: https://codereview.chromium.org/297663003

Patch from Raphael Kubo da Costa <raphael.kubo.da.costa@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21402 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-21 09:25:05 +00:00
jkummerow@chromium.org
58661c150f Fix ArrayShift hydrogen support 
BUG=chromium:374838
LOG=y
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/299713003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21401 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-21 08:51:29 +00:00
adamk@chromium.org
50f5a79590 Use SameValueZero for Map and Set 
Instead of normalizing the keys we use SameValueZero for the actual
comparison.

BUG=v8:1622
LOG=Y
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/299703004

Patch from Erik Arvidsson <arv@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21400 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-21 08:47:02 +00:00
adamk@chromium.org
6717ac656a Array Iterator next should check for own property 
Since we are using private symbols for the internal slots we need to
check for a local property.

BUG=None
LOG=Y
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/268363011

Patch from Erik Arvidsson <arv@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21399 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-21 08:05:11 +00:00
marja@chromium.org
910050e6d9 Fix UnboundScript::GetScriptName and GetLineNumber. 
Probably broken since r19925 (mine).

R=dcarney@chromium.org
BUG=

Review URL: https://codereview.chromium.org/296043004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21398 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-21 07:32:32 +00:00
jarin@chromium.org
58a130da6e Reland "Fix Heap::IsHeapIterable." 
This relands r21388 (+ handlification of an offending function).

BUG=373283
LOG=N
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/294903003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21397 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-21 06:44:38 +00:00
jkummerow@chromium.org
e66b179990 Disable ArrayShift hydrogen support 
BUG=chromium:374838
LOG=y
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/295983003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21392 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 17:12:18 +00:00
yangguo@chromium.org
7e1c789685 Remove unused thread locals from debugger. 
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/286903003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21391 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 15:20:02 +00:00
plind44@gmail.com
eabf06021c MIPS: Avoid flushing the icache unnecessarily when updating target addresses in code. 
Port r21380 (ef20a0a)

Original commit message:
This CL updates RelocInfo update operations and set_target_address_at to enable
skipping of the icache flush if it going to be batched up later.
Code::CopyFrom and Code::Relocate are modified to avoid individual icache
flushes since the whole code area will be flushed after the reloc info is
updated.

These changes reduce a regression when enabling the OOL constant pool on Arm,
since this change can cause MovT/MovW instructions for relocatable targets
if the constant pool is full.

Scores for Mandreel latency on a Nexus 5:
- OOL CP disabled: 3533
- OOL CP enabled, without this CL: 1825
- OOL CP enabled, with change: 3015

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/296723003

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21390 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 14:49:05 +00:00
adamk@chromium.org
70c3a714a1 ES6 Map/Set iterators/forEach improvements 
This changes how Map/Set interacts with its iterators. When the
underlying table is rehashed or cleared, we create a new table (like
before) but we add a reference from the old table to the new table. We
also add an array describing how to transition the iterator from the
old table to the new table.

When Next is called on the iterator it checks if there is a newer table
that it should transition to. If there is, it updates the index based
on the previously recorded changes and finally changes itself to point
at the new table.

With these changes Map/Set no longer keeps the iterators alive. Also,
as before, the iterators keep the underlying table(s) alive but not the
actual Map/Set.

BUG=v8:1793
LOG=Y
R=mstarzinger@chromium.org, rossberg@chromium.org

Review URL: https://codereview.chromium.org/289503002

Patch from Erik Arvidsson <arv@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21389 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 14:22:05 +00:00
jarin@chromium.org
014bf8b407 Revert "Fix Heap::IsHeapIterable." 
This reverts commit r21387.

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/291193002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21388 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 14:03:38 +00:00
jarin@chromium.org
dd4c82bbb3 Fix Heap::IsHeapIterable. 
We only consider heap iterable if the new space is empty (in addition to the exisiting old space check).

The change also moves the iterability forcing + allocation prevention gadgets to HeapIterator so that it is impossible to miss them when iterating the heap.

R=hpayer@chromium.org
BUG=373283
LOG=N

Review URL: https://codereview.chromium.org/285693006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21387 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 13:19:21 +00:00
bmeurer@chromium.org
a7e19c1a43 Revert "Refactor transitioning stores." 
This reverts commit r21383 for breaking the Mozilla tests.

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/292993003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21386 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 13:03:25 +00:00
marja@chromium.org
2fee5a16ee Parser: delay throwing errors. 
This makes Parser a bit more independent of Isolate during the recursive descent
phase. That is necessary for making it possible to run Parser on a non-main
thread in the future.

Proof of concept CL for the the "Parser independent of Isolate" work is here:
https://codereview.chromium.org/231073002/

BUG=
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/289373005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21385 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 12:22:04 +00:00
bmeurer@chromium.org
fd4da6bfe7 Get rid of HStoreNamedField::SkipWriteBarrier(). 
The write barrier elimination does the right thing now, so
we can get rid of this hack.

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/296023002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21384 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 11:25:47 +00:00
bmeurer@chromium.org
b09989ec58 Refactor transitioning stores. 
There's actually no need to have the transition as part of the HStoreNamedField instruction. In fact, it is cleaner and faster to generate a separate HStoreNamedField for the transition map. This will also help to eliminate map stores with store elimination, as well as reduce register pressure for transitioning stores on ia32.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/295743002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21383 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 11:06:23 +00:00
ishell@chromium.org
2a62cce170 Reland "v8::TryCatch now works correctly with ASAN's UseAfterReturn mode enabled." 
BUG=chromium:369962
LOG=N
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/282783004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21382 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 10:13:46 +00:00
hpayer@chromium.org
2c6438bbfa Print promotion rate and semi-space copy rate in --trace-gc-nvp. 
BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/290133004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21381 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 09:53:18 +00:00
rmcilroy@chromium.org
63199d0bfe Avoid flushing the icache unnecessarily when updating target addresses in code. 
This CL updates RelocInfo update operations and set_target_address_at to enable
skipping of the icache flush if it going to be batched up later.
Code::CopyFrom and Code::Relocate are modified to avoid individual icache
flushes since the whole code area will be flushed after the reloc info is
updated.

These changes reduce a regression when enabling the OOL constant pool on Arm,
since this change can cause MovT/MovW instructions for relocatable targets
if the constant pool is full.

Scores for Mandreel latency on a Nexus 5:
 - OOL CP disabled: 3533
 - OOL CP enabled, without this CL: 1825
 - OOL CP enabled, with change: 3015

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

Review URL: https://codereview.chromium.org/284153004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21380 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 09:21:45 +00:00
rossberg@chromium.org
9d9fa6af31 Tighten HAS_PRIVATE to own properties 
R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/290373002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21379 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 09:13:26 +00:00
yangguo@chromium.org
cf49b6e3ca Reland "Simplify debugger state." 
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/299653002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21378 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 08:52:42 +00:00
bmeurer@chromium.org
c8ad96d703 Use HType::NonPrimitive() for array backing store allocations. 
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/291153003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21377 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 08:42:10 +00:00
vegorov@chromium.org
38f2d25a84 Ensure that interruptor callback registered through API is called outside of ExecutionAccess lock. 
Such a coarse locking can cause a dead-lock when another thread is attempting to clear an interrupt while we are waiting in the interrupt callback.

Add test that verifies this API invariant.

BUG=chromium:374978
LOG=N
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/291123002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21376 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 08:24:51 +00:00
bmeurer@chromium.org
424877c773 Fix invalid condition in check elimination effects. 
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/292993002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21375 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-20 08:16:47 +00:00
hpayer@chromium.org
b2c9fcaa4c Add allocation sites to scratchpad only if a significant amount of mementos was found. 
BUG=
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/284223007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21370 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 16:07:20 +00:00
plind44@gmail.com
13af2c0598 MIPS: Allow comparison in UINT32 mode. 
Port r21355 (932c5de)

Original commit message:
Shamelessly based on parts of https://codereview.chromium.org/288853003/. :-)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/296453003

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21369 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 15:30:23 +00:00
machenbach@chromium.org
1757706cb9 Sync change log file with trunk. 
BUG=
TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/291803005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21368 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 15:29:29 +00:00
dcarney@chromium.org
1b70812e7d filter out .caller from other worlds 
R=verwaest@chromium.org

BUG=

Review URL: https://codereview.chromium.org/261103002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21366 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 13:45:45 +00:00
wingo@igalia.com
83576f2363 Fix GCMole warning when creating generator arguments poison pill 
R=jkummerow@chromium.org
TBR=rossberg@chromium.org
BUG=

Review URL: https://codereview.chromium.org/289323005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21365 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 12:31:36 +00:00
wingo@igalia.com
6382a25fa7 Poison .arguments and .caller for generator functions 
R=rossberg@chromium.org
BUG=

Review URL: https://codereview.chromium.org/270133003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21362 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 10:47:00 +00:00
jochen@chromium.org
34c2f56213 Update BUILD.gn and properly disable it on android 
BUG=none
R=dcarney@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/294613002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21361 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 09:58:46 +00:00
bmeurer@chromium.org
890dc24758 Further improve old space allocation write barrier elimination. 
Stores to old space allocations require no write barriers if the
object is the new space dominator and the value is not in new space.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/290173003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21360 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 09:48:35 +00:00
adamk@chromium.org
9de1ec5a78 Comment out %RunMicrotasks assert that triggers in mjsunit tests 
TBR=dcarney@chromium.org

Review URL: https://codereview.chromium.org/290313004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21359 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 08:36:56 +00:00
machenbach@chromium.org
f737580c65 Let test driver export json results. 
BUG=374134
LOG=n
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/285193009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21358 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 08:36:53 +00:00
adamk@chromium.org
62e09a3534 Fix fuzzable JS function count after r21356 
TBR=dcarney@chromium.org

Review URL: https://codereview.chromium.org/294523006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21357 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 08:19:54 +00:00
adamk@chromium.org
35b8b0b27a Move microtask queueing logic from JavaScript to C++ 
This avoids the appearence of a leak due to storing a JSObject
as the microtask_state in the strong root list, and allows callers
to call Isolate::RunMicrotasks() without having any v8::Context
available (as at least Blink has interest in doing).

The queue is now a strong root, represented as a FixedArray of JSFunctions
(or empty_fixed_array, if it's empty); it doubles in size when it needs to grow.
The number of elements in the queue is stored in Isolate::pending_microtask_count().

LOG=Y
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/290633010

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21356 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 07:57:04 +00:00
svenpanne@chromium.org
ec23d0b815 Allow comparison in UINT32 mode. 
Shamelessly based on parts of https://codereview.chromium.org/288853003/. :-)

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/288383002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21355 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 07:47:09 +00:00
bmeurer@chromium.org
ba5763f3cb Drop redundant FullCodeGenerator::prepared_bailout_ids_. 
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/294543002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21354 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 07:26:33 +00:00
bmeurer@chromium.org
f1f1ee9798 Perform block ordering in-place. 
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/295543002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21353 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 07:24:24 +00:00
bmeurer@chromium.org
ecadc63b60 Partial revert of "Next bunch of fixes for check elimination". 
This reverts the part of r21154 that introduced the CHECK()s to verify
state of objects with stable maps during code generation. The CHECK()s
seem to trigger a non-critical hidden bug in the map stability
mechanism. We will re-add these CHECK()s once the bug is found and
fixed.

BUG=372173
LOG=y
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/287363002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21352 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 07:08:47 +00:00
svenpanne@chromium.org
7ac5dfbd3e Revert "Simplify debugger state." 
This reverts r21346, it broke the layout tests.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/292713002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21351 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-19 07:06:44 +00:00
danno@chromium.org
327c016af4 Fix performance regression in regular expressions after Array.push() optimizations 
R=yangguo@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/281953002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21348 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-16 15:42:00 +00:00
yangguo@chromium.org
fe243379f8 Decouple CpuFeatures from serializer state. 
Traditionally, we cross compile a snapshot iff the serializer is enabled.
This will change in the future.

Changes:
 - CpuFeatures probing is done once per process, depending on whether we
   cross compile.
 - CpuFeatures are consolidated into the platform-independent assembler.h
   as much as possible.
 - FLAG_enable_<feature> will only be checked at probing time (already the
   case for ARM).
 - The serializer state is cached by the MacroAssembler.
 - PlatformFeatureScope is no longer necessary.
 - CPUFeature enum values no longer map to CPUID bit fields.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/285233010

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21347 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-16 15:18:24 +00:00
yangguo@chromium.org
2d1a75d608 Simplify debugger state. 
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/287873005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21346 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-16 14:58:03 +00:00
rmcilroy@chromium.org
5cfca21295 Fix MacroAssembler::Prologue for Arm when FLAG_out_off_line_constant_pool is enabled. 
The prologue update in r21329 changed the scoping of the PredictableCodeSizeScope.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/284303003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21345 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-16 14:49:11 +00:00
rossberg@chromium.org
417610e24a Stage ES6 symbols 
R=yangguo@chromium.org
BUG=

Review URL: https://codereview.chromium.org/286133002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21344 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-05-16 14:42:02 +00:00