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Author SHA1 Message Date
hpayer@chromium.org
9180b1a319 Remove sequential sweeping mode and perform lazy sweeping when no sweeper threads are active. 
BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/396443004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22394 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-15 08:24:44 +00:00
danno@chromium.org
319e5226e9 fix the vtune support bug. 
During https://code.google.com/p/v8/source/detail?r=19925 checkin context bound scripts (Script)
and context unbound scripts (UnboundScript) are Distinguished.

And then Sven Panne helped to fix the vtune support compilation
error in https://code.google.com/p/v8/source/detail?r=20955.

The problem is that there is runtime error for vtune
support.
In our original implementation, we encapsulated and passed v8::internal::Script
to V8 API. It will leads to type check error for current V8::Script definition.

So I changed the Handle<Script> definition in JitCodeEvent
to Handle<UnboundScript>
 and add the corresponding change in log.cc.

If you do NOT prefer to change in include/v8.h. I think I can change the definition of
CodeEventLogger::LogRecordedBuffer(...) so that the we can pass the correct
type (JSFunction) as V8::Script to V8 API.

BUG=
R=danno@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/334263018

Patch from Chunyang Dai <chunyang.dai@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22393 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-15 08:13:42 +00:00
marja@chromium.org
5de6d47ad2 Fix flags for test cases involving arrow functions 
There are a lot of tests in cctest/test-parsing/ErrorsArrowFunctions,
so it is quite slow. This patch removes some flags to make it faster.
Removing three flags that don't affect the test brings down the run
time one order of magnitude, which is fast enough even for debug/ASAN
bots.

Also, remove the unneeded kArrowFunctions flag from
cctest/test-parsing/NoErrorsYieldSloppyAllModes

BUG=
R=marja@chromium.org

Review URL: https://codereview.chromium.org/387383002

Patch from Adrián Pérez de Castro <aperez@igalia.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22392 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-15 08:10:26 +00:00
jkummerow@chromium.org
23cf62232f Drop unnecessary receiver validity checks from {Load,Store}IC_Normal. 
Since these builtins are used as handlers after a map check/dispatch, they don't need to check the receiver again.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/390053002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22391 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-15 08:07:25 +00:00
svenpanne@chromium.org
cd0980059d Removed some copy-n-paste from StackFrame::Foo API entries. 
BUG=v8:3436
LOG=y
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/388183002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22390 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-15 06:59:42 +00:00
mvstanton@chromium.org
086290baf0 Use the same registers for StoreIC and KeyedStoreIC. 
Based on https://codereview.chromium.org/389283002 ("Use register parameters in ElementsTransitionGenerator") which must land first.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/390013002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22387 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 20:43:41 +00:00
kilvadyb@homejinni.com
acffe8c7cd MIPS: Remove ASSERT since there are tons of different ASSIGN variants 
Port r22382 (84a841f)

BUG=
R=akos.palfi@imgtec.com

Review URL: https://codereview.chromium.org/395503002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22386 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 18:53:49 +00:00
kilvadyb@homejinni.com
ea1d4db878 MIPS: This CL simplifies var / const by ensuring the behavior is consistent in itself, and with regular JS semantics; between regular var/const and eval-ed var/const. 
Port r22379 (fb62653)

Original commit message:
Legacy const is changed so that a declaration declares a configurable, but non-writable, slot, and the initializer reconfigures it (when possible) to non-configurable non-writable. This avoids the need for "the hole" as marker value in JSContextExtensionObjects and GlobalObjects. Undefined is used instead.

BUG=
R=akos.palfi@imgtec.com

Review URL: https://codereview.chromium.org/389373004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22385 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 18:22:34 +00:00
mvstanton@chromium.org
490c6171ed Use register parameters in ElementsTransitionGenerator. 
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/389283002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22384 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 15:03:38 +00:00
verwaest@chromium.org
6466ff39fb Remove PropertyAttributes from SetProperty 
BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/390833003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22383 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 14:52:24 +00:00
verwaest@chromium.org
e3a269b77f Remove ASSERT since there are tons of different ASSIGN variants 
BUG=
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/385173009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22382 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 14:42:33 +00:00
verwaest@chromium.org
1d55a634a9 Replace AddProperty by AddNamedProperty to speed up the common case 
BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/384003003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22381 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 14:05:30 +00:00
rossberg@chromium.org
3fade8e4af Fix d8 object printing (symbols, accessors) 
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/388243002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22380 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 14:01:30 +00:00
verwaest@chromium.org
aa7198dfdd This CL simplifies var / const by ensuring the behavior is consistent in itself, and with regular JS semantics; between regular var/const and eval-ed var/const. 
Legacy const is changed so that a declaration declares a configurable, but non-writable, slot, and the initializer reconfigures it (when possible) to non-configurable non-writable. This avoids the need for "the hole" as marker value in JSContextExtensionObjects and GlobalObjects. Undefined is used instead.

BUG=
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/379893002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22379 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 14:01:04 +00:00
rossberg@chromium.org
942fe1914f Reland "Include symbol properties in Object.{create,defineProperties}" 
Second try; implementation that doesn't rely on external arrays.

R=mstarzinger@chromium.org
BUG=v8:3440

Review URL: https://codereview.chromium.org/391713002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22378 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 14:00:33 +00:00
mstarzinger@chromium.org
cb3e2beba3 Fix error message about read-only symbol properties. 
R=rossberg@chromium.org
BUG=v8:3441
LOG=Y

Review URL: https://codereview.chromium.org/390783003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22377 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 13:57:10 +00:00
titzer@chromium.org
f28f6102f8 Revert "Remove sequential sweeping mode and perform lazy sweeping when no sweeper threads are active." 
Reason: broke win64 build

This reverts commit 221bfdd2da2b6f3c1cbe77c5d197f1ea626b0bd2.

TBR=hpayer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/393523002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22374 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 13:02:36 +00:00
rossberg@chromium.org
f2536bf7af Revert "Include symbol properties in Object.{create,defineProperties}" 
TBR=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/394443002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22373 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 12:27:08 +00:00
hpayer@chromium.org
030df48ced Remove sequential sweeping mode and perform lazy sweeping when no sweeper threads are active. 
BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/384373002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22372 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 11:31:22 +00:00
yangguo@chromium.org
ba8bbee634 Serialize builtins by referencing canonical ones. 
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/383173002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22371 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 11:22:03 +00:00
rossberg@chromium.org
5c8d0d18f0 Include symbol properties in Object.{create,defineProperties} 
R=mstarzinger@chromium.org
BUG=v8:3440
LOG=Y

Review URL: https://codereview.chromium.org/391683002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22370 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 10:59:29 +00:00
jochen@chromium.org
712957548d Unify LookupIterator::GetRoot and Objects::GetRootMap 
BUG=none
R=verwaest@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/388193002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22369 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 10:54:24 +00:00
yangguo@chromium.org
cc9a9f4191 Ensure that each profiling entry ends with a new line. 
Currently this does not happen if the message builder buffer is full.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/390803002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22368 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 10:47:40 +00:00
machenbach@chromium.org
4493756dcb Whitespace change to trigger bots. 
TBR=jochen@chromium.org
BUG=

Review URL: https://codereview.chromium.org/386413002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22367 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 09:27:07 +00:00
marja@chromium.org
70da8959bc Implement handling of arrow functions in the parser 
Arrow functions are parsed from ParseAssignmentExpression(). Handling the
parameter list is done by letting ParseConditionalExpression() parse a comma
separated list of identifiers, and it returns a tree of BinaryOperation nodes
with VariableProxy leaves, or a single VariableProxy if there is only one
parameter. When the arrow token "=>" is found, the VariableProxy nodes are
passed to ParseArrowFunctionLiteral(), which will then skip parsing the
paramaeter list. This avoids having to rewind when the arrow is found and
restart parsing the parameter list.

Note that the empty parameter list "()" is handled directly in
ParsePrimaryExpression(): after is has consumed the opening parenthesis,
if a closing parenthesis follows, then the only valid input is an arrow
function. In this case, ParsePrimaryExpression() directly calls
ParseArrowFunctionLiteral(), to avoid needing to return a sentinel value
to signal the empty parameter list. Because it will consume the body of
the arrow function, ParseAssignmentExpression() will not see the arrow
"=>" token as next, and return the already-parser expression.

The implementation is done in ParserBase, so it was needed to do some
additions to ParserBase, ParserTraits and PreParserTraits. Some of the
glue code can be removed later on when more more functionality is moved
to ParserBase.

Additionally, this adds a runtime flag "harmony_arrow_functions"
(disabled by default); enabling "harmony" will enable it as well.

BUG=v8:2700
LOG=N
R=marja@chromium.org

Review URL: https://codereview.chromium.org/383983002

Patch from Adrián Pérez de Castro <aperez@igalia.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22366 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 07:55:45 +00:00
jochen@chromium.org
168742b81a Introduce a PrototypeIterator class and use it for prototype access 
The new pattern is that we first get the map of the root of the
prototype chain using Object::GetMapRoot() and then walk up the
prototype chain using Map::prototype().

BUG=???
R=verwaest@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/376233002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22365 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-14 07:19:49 +00:00
machenbach@chromium.org
df3c11d760 Whiltespace change to trigger bots. 
TBR=jochen@chromium.org
BUG=

Review URL: https://codereview.chromium.org/386163002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22362 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-12 16:56:32 +00:00
machenbach@chromium.org
ac96f2d727 Whiltespace change to trigger bots. 
TBR=jochen@chromium.org
BUG=

Review URL: https://codereview.chromium.org/384113002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22361 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-12 15:27:18 +00:00
jarin@chromium.org
457de26330 Fix arm64 deoptimization from double registers (reverts r20613). 
This reverts "ARM64: Use pair memory access in deoptimizer entry", r20613. It does not really make sense to micro-optimize the deoptimizer as it is the ultra-slow path. Moreover, the original code was easier to read (in addition to being correct).

BUG=391313
LOG=N
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/389583003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22360 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 19:30:09 +00:00
mvstanton@chromium.org
18961d7c03 Revert "Use the same registers for StoreIC and KeyedStoreIC." 
This reverts commit r22358 due to release mode arm64 test failures.

TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/385073007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22359 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 14:50:59 +00:00
mvstanton@chromium.org
8a0267f96e Use the same registers for StoreIC and KeyedStoreIC. 
The x64 and ia32 platforms already did this, port to arm and arm64.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/385553004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22358 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 13:53:19 +00:00
kilvadyb@homejinni.com
8efe72df31 MIPS: slightly reduce deopt tables size. 
Port r22305 (00a3740)

BUG=
R=dusan.milosavljevic@rt-rk.com

Review URL: https://codereview.chromium.org/387473003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22357 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 13:49:33 +00:00
machenbach@chromium.org
aa2aaa0831 Whitespace change to trigger bots. 
BUG=
TBR=jochen@chromium.org

Review URL: https://codereview.chromium.org/383963005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22356 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 13:29:12 +00:00
svenpanne@chromium.org
4e69166807 Unbreak build by making old MSVC happy (hopefully). 
TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/386023002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22355 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 12:55:56 +00:00
svenpanne@chromium.org
99d3c3b1c4 Made printing of special FP values portable. 
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/386973003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22354 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 12:42:37 +00:00
machenbach@chromium.org
d0e1daf357 Whitespace change to trigger bots. 
BUG=
TBR=jochen@chromium.org

Review URL: https://codereview.chromium.org/389613002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22353 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 12:37:53 +00:00
machenbach@chromium.org
316e4ad297 Whitespace change to trigger bots. 
BUG=
TBR=jochen@chromium.org

Review URL: https://codereview.chromium.org/386973002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22352 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 12:28:22 +00:00
svenpanne@chromium.org
1e2d3ecb35 Make UBSan happy. 
This involves avoiding signed multiplication overflow, shifting too
far and overflow during negation.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/382153003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22351 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 12:12:58 +00:00
machenbach@chromium.org
0a5a0cc36c Whitespace change to trigger bots. 
BUG=
TBR=jochen@chromium.org

Review URL: https://codereview.chromium.org/385163003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22350 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 11:54:33 +00:00
dslomov@chromium.org
1b5958382a Revert "Remove sequential sweeping mode and perform lazy sweeping when no sweeper threads are active." 
This reverts commit r22346 for breaking GC stress tests.

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/386943003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22349 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 11:33:57 +00:00
dslomov@chromium.org
4db1f68077 Disabling flakes.Filed 3433, 3434, 3435. 
R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/382083003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22348 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 11:20:37 +00:00
akos.palfi@imgtec.com
aba630f104 MIPS: update owners. 
BUG=
R=danno@chromium.org, plind44@gmail.com

Review URL: https://codereview.chromium.org/389463002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22347 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 10:02:48 +00:00
hpayer@chromium.org
6d022494ec Remove sequential sweeping mode and perform lazy sweeping when no sweeper threads are active. 
BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/382793002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22346 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 09:51:34 +00:00
alph@chromium.org
e64230c1f9 Unflake and speedup JsNative*Sample cpu profile tests 
Instead of running cpu profiler for a hundred milliseconds,
collecting samples distributed in a non-deterministic way all along
the code, make the tests rely on a single sample we collect on
the profiler start.

R=bmeurer@chromium.org, yurys@chromium.org

Review URL: https://codereview.chromium.org/301603005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22345 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 09:06:12 +00:00
mstarzinger@chromium.org
4468f441b0 Remove AddCode and RemoveCode GDB JIT entry hooks. 
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/387533003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22344 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 07:51:25 +00:00
weiliang.lin@intel.com
9d047839b5 X87: Use a register spec for StoreIC and KeyedStoreIC. 
port r22328

original commit message:

  Use a register spec for StoreIC and KeyedStoreIC.

  This continues refactoring already applied for LoadIC in r22035 (https://code.google.com/p/v8/source/detail?r=22035).

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/382123003

Patch from Chunyang Dai <chunyang.dai@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22343 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 07:47:58 +00:00
yangguo@chromium.org
fe072007d7 Change ASSERTs in serializer macro to STATIC_ASSERTs. 
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/387523002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22340 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 07:04:51 +00:00
yangguo@chromium.org
ada872481f Fix assertion in ScriptData. 
R=marja@chromium.org

Review URL: https://codereview.chromium.org/383963002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22339 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 06:58:25 +00:00
yangguo@chromium.org
11dbc40cf3 Temporarily remove newly introduced assertion. 
TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/388753003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22338 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 06:46:24 +00:00
marja@chromium.org
938b57f75b Revert "Implement handling of arrow functions in the parser" 
This reverts revision 22320.

Reason: ASAN still detects leaks!

Conflicts:
	src/preparser.h

TBR=aperez@igalia.com,marja@chromium.org
BUG=

Review URL: https://codereview.chromium.org/389503002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22337 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2014-07-11 06:39:31 +00:00