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Author SHA1 Message Date
mstarzinger@chromium.org
9ef18efff6 Remove IsInitialized checks from inlined API functions. 
R=marja@chromium.org, svenpanne@chromium.org
TEST=cctest/test-api

Review URL: https://codereview.chromium.org/17068006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15277 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-24 08:58:01 +00:00
loislo@chromium.org
9d95db6fad CPUProfiler: remove copy&paste from CodeCreateEvent. 
This is the next patch on the way of simplifying profiler API.
It is extracting the common parts of the serialization process.

TEST=current test set
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/16917008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15276 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-24 08:40:38 +00:00
yurys@chromium.org
f830fbea3c Simplify stack iterators implementation 
In order to fix https://code.google.com/p/chromium/issues/detail?id=252097 I
need to change SafeStackTraceFrameIterator. Stack iterators hierarchy looks
excessively complicated and I'd like to flatten it a bit by removing some
intermediate classes. In particular there are two hierarchies sharing
JavaScriptFrameIteratorTemp<T> template for no good reason.

This change extracts some of JavaScriptFrameIteratorTemp functionality directly
into SafeStackTraceFrameIterator. This made it obvious that a few checks were
performed twice.

The rest of JavaScriptFrameIteratorTemp<T> is merged with
JavaScriptFrameIterator. Now that the class is not a template some of its
implementation is moved from frames-inl.h into frames.cc

So in this change I removed JavaScriptFrameIterator and
SafeJavaScriptFrameIterator. As the next step I'm going to merge
SafeStackFrameIterator into SafeStackTraceFrameIterator.

BUG=None
R=loislo@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/16917004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15275 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-24 08:38:37 +00:00
dslomov@chromium.org
b05628f540 Update boot-up memory use limit after adding DataView. 
R=danno@chromium.org

Review URL: https://codereview.chromium.org/17589005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15274 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-24 07:02:53 +00:00
palfia@homejinni.com
ed4d3c8c66 MIPS: Use AST's type field and merge types for unary, binary & compare ICs. 
Port r15264 (d4c3767)

Missing fixed_right_arg().has_value cases added also.

BUG=

Review URL: https://codereview.chromium.org/17552008
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15273 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 20:31:06 +00:00
jkummerow@chromium.org
96e818136c Use kPointerSize to compute the size of StubCache::Entry for X64 
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/17552004

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

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15272 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 16:19:51 +00:00
dslomov@chromium.org
91eb5f8d25 DataView implementation. 
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/17153011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15269 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 13:02:38 +00:00
jkummerow@chromium.org
a4d2759d49 Distinguish times_8 and times_pointer_size for X64 
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/17550005

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

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15268 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 12:57:19 +00:00
jkummerow@chromium.org
cbc8ed7110 HBoundsCheck shouldn't ignore Tagged input representations unconditionally 
BUG=v8:2740
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/16917003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15267 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 12:50:02 +00:00
yurys@chromium.org
7f1750580c V8 API: Add a missing NULL check into Isolate::GetCurrentContext(). 
There is a missing NULL check for: "internal_isolate->context() != NULL".
Right now before calling this method one should call v8::Context::InContext()
first to perform this check, otherwise we may crash. But this static method
will do this check on the current isolate, which may not be the same as a given one.

BUG=249655
R=yurys@chromium.org,mvstanton@chromium.org

Review URL: https://codereview.chromium.org/16943006

Patch from Andrey Adaykin <aandrey@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15266 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 12:34:47 +00:00
rossberg@chromium.org
04e1278529 Remove BinaryOp::result_type 
R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17261023

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15265 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 12:16:14 +00:00
rossberg@chromium.org
0977c60984 Use AST's type field and merge types for unary, binary & compare ICs 
R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17468003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15264 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 11:10:06 +00:00
yangguo@chromium.org
b7b92bd9ac Short-circuit embedded cons strings. 
R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17418003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15263 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 09:24:30 +00:00
yangguo@chromium.org
cbf6244029 Use mutex instead of busy wait when installing optimized function. 
R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17099012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15262 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 08:38:12 +00:00
yangguo@chromium.org
2e10e3e336 Clean up queued compilation tasks when quitting. 
R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17543002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15261 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 08:37:05 +00:00
yurys@chromium.org
6f09cb471b Delete deprecated methods from v8-profiler.h 
All these methods were already marked as V8_DEPRECATED in V8 Version 3.18.0 (see https://code.google.com/p/v8/source/browse/trunk/include/v8-profiler.h?r=14304) so it is time to delete them.

BUG=None
R=loislo@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/17524007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15260 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 07:56:22 +00:00
plind44@gmail.com
0bc8ef88dd MIPS: Let NaN flow as double into HBranch + some minor improvements 
Port r15246 (cb18dce2)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/17198012

Patch from Akos Palfi <palfia@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15259 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-21 02:43:13 +00:00
palfia@homejinni.com
54483c4880 MIPS: Generators: Avoid calling into runtime if operand stack is empty 
Port r15240 (909f716e)

Original commit message:
This patch makes yield sites save the resume continuation and context
inline.  If the operand stack is empty, we can avoid a call into the
runtime.  This also makes the SuspendJSGeneratorObject runtime function
less magical: it just has to save the operand stack and stack handlers.

This speeds up the following case by a factor of 3 or so:

  function* until(n) {
    for (var i = 0; i < n; i++)
      yield i;
  }

  function sum(iter) {
    var sum = 0;
    for (var x of iter) sum += x;
    return sum;
  }

  for (var i = 0; i < 10000; i++) sum(until(1000))

Also, there is no more sentinel value as the generators will resume in
the right place already, allowing me to remove the hack added to the
--debug-code check in r14437.

BUG=

Review URL: https://codereview.chromium.org/17291016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15258 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 23:43:10 +00:00
palfia@homejinni.com
b58d0d2af7 MIPS: Lithium codegen should not pass around block_ids. 
Port r15235 (95a844b)

Original commit message:
Rather encapsulate the basic block to assembly label mapping in the LInstruction.

BUG=

Review URL: https://codereview.chromium.org/17504002
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15257 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 20:18:58 +00:00
danno@chromium.org
fd08ac7c26 Handle MONOMORPIC loads where type feedback is code stub 
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/17451019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15254 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 16:54:09 +00:00
jkummerow@chromium.org
0e54a418db Add counters for requested/inserted/executed soft deopts 
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/17498003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15253 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 16:53:22 +00:00
palfia@homejinni.com
6a91645a84 MIPS: Fix stack frame reconstruction for generators with formal arguments. 
Port r15230 (e2bbe01)

Original commit message:
The formal parameter count was always being treated as an untagged
integer, but it is actually a Smi on ia32 and arm.

BUG=v8:2355
TEST=mjsunit/harmony/generators-iteration

Review URL: https://codereview.chromium.org/17261028
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15250 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 15:29:22 +00:00
yurys@chromium.org
c7b3ef0e05 Make sure ExternalCallbackScope is always created when VM state changes to EXTERNAL 
ExternalCallbackScope is used to let CPU profiler know which API callback is being executed. Whenever such callback is called we should create VMState<ETERNAL> and ExternalCallbackScope. This patch fixes several places where VMState<ETERNAL> went without ExternalCallbackScope.

BUG=244580
R=dcarney@chromium.org, svenpanne@chromium.org

Review URL: https://codereview.chromium.org/17059005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15249 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 14:47:35 +00:00
verwaest@chromium.org
6ae544eca7 Also apply InferControlFlowRange to smi-based tests. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16870011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15248 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 14:20:15 +00:00
verwaest@chromium.org
917ac7d413 Improve range analysis for smi phi 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/17498002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15247 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 14:11:52 +00:00
olivf@chromium.org
29d3461529 Let NaN flow as double into HBranch + some minor improvements 
BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/17082003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 13:51:03 +00:00
verwaest@chromium.org
2b485416ed Properly assign heapobject to constant functions. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/17406009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15245 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 13:46:29 +00:00
verwaest@chromium.org
4922e3d206 Flexible representation for BuildIncrement, but CannotBeTagged. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/17028017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15244 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 13:22:46 +00:00
verwaest@chromium.org
b17e759dc1 Add soft-deopt for uninitialized assignment 
R=hpayer@google.com

Review URL: https://chromiumcodereview.appspot.com/17071002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15241 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 13:09:43 +00:00
wingo@igalia.com
646a34e1e0 Generators: Avoid calling into runtime if operand stack is empty 
This patch makes yield sites save the resume continuation and context
inline.  If the operand stack is empty, we can avoid a call into the
runtime.  This also makes the SuspendJSGeneratorObject runtime function
less magical: it just has to save the operand stack and stack handlers.

This speeds up the following case by a factor of 3 or so:

  function* until(n) {
    for (var i = 0; i < n; i++)
      yield i;
  }

  function sum(iter) {
    var sum = 0;
    for (var x of iter) sum += x;
    return sum;
  }

  for (var i = 0; i < 10000; i++) sum(until(1000))

Also, there is no more sentinel value as the generators will resume in
the right place already, allowing me to remove the hack added to the
--debug-code check in r14437.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/15990004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15240 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 12:59:45 +00:00
dcarney@chromium.org
8202410cca deprecate old style callbacks 
R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17069003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15239 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 12:53:19 +00:00
mstarzinger@chromium.org
697bee6157 Use +kCallerSPOffset instead of -kMarkerOffset to compute the args pointer 
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/17451014

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

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15238 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 12:51:36 +00:00
dcarney@chromium.org
a74f511e61 remove all old style callbacks - patch 3 
TBR=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17336003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15237 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 12:28:27 +00:00
verwaest@chromium.org
149d31eb14 Fix the flags used to probe the megamorphic code cache. 
R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/17448017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15236 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 12:07:56 +00:00
olivf@chromium.org
4ee7a92d83 Lithium codegen should not pass around block_ids. Rather encapsulate the basic block to assembly label mapping in the LInstruction. 
BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/17276002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15235 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 11:50:50 +00:00
hpayer@chromium.org
6ed90f08ed Report store buffer overflows to v8 counters. 
BUG=
R=jkummerow@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/17303006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15234 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 11:47:58 +00:00
hpayer@chromium.org
77f5c6c122 Don't let the GC clear the cache between cache invocations to pass test. 
BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/17218005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15233 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 11:23:34 +00:00
dcarney@chromium.org
3a5e4c45a6 windows test fix for 15221 
TBR=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/16831020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15232 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 11:03:04 +00:00
yangguo@chromium.org
928cbcdc8d Skip parallel recompilation tests if parallel recompilation is disabled. 
Parallel recompilation is usually disabled on single-core systems.

R=jkummerow@chromium.org
BUG=v8:2733

Review URL: https://codereview.chromium.org/17261021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15231 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 11:01:33 +00:00
wingo@igalia.com
f7ba3a7bb1 Fix stack frame reconstruction for generators with formal arguments 
The formal parameter count was always being treated as an untagged
integer, but it is actually a Smi on ia32 and arm.

R=mstarzinger@chromium.org
BUG=v8:2355
TEST=mjsunit/harmony/generators-iteration

Review URL: https://codereview.chromium.org/17485002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15230 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 10:48:34 +00:00
mstarzinger@chromium.org
ea87d08557 Revert r14930 and r14935 temporarily. 
This is a temporary revert to track down a potential perf regression
introduced in r14930. The following two changes were reverted:
- "Deprecate HAllocateObject in favor of HAllocate."
- "Added pretenuring support for call new."

R=danno@chromium.org
BUG=chromium:247504

Review URL: https://codereview.chromium.org/17491002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15229 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 10:48:14 +00:00
hpayer@chromium.org
d51a0d06e3 Make isolate id getter public. 
BUG=
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/17343004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15228 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 10:05:33 +00:00
hpayer@chromium.org
1609402534 Abort incremental marking in stress gc tests whenever we expect a full collection after executing CollectAllGarbage. 
BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/17482003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15227 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 10:04:53 +00:00
verwaest@chromium.org
e829fb4fa2 Merge assignment handling for Assignment and CompoundAssignment 
R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/17328005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15226 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 09:19:19 +00:00
dcarney@chromium.org
b9e5c586a8 symbols should be in the startup snapshot 
R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17366004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15225 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 09:10:19 +00:00
rossberg@chromium.org
eb099a1a8c Introduce Type::Intersect function 
Also, fix bugs in Type::Union and Type::Maybe.

(This subsumes the in-flight fix for Union in https://codereview.chromium.org/16925008/, including test cases).

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17335003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15224 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 09:10:10 +00:00
yangguo@chromium.org
0d409f5213 Directly use C++ builtin of ArrayPush for String.prototype.split. 
R=svenpanne@chromium.org
BUG=v8:2737

Review URL: https://codereview.chromium.org/17283007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15223 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 08:13:21 +00:00
dcarney@chromium.org
640353d088 remove all old style callbacks - patch 1 of many 
R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17064004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15222 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 08:12:59 +00:00
dcarney@chromium.org
89fb509c77 remove all old style callbacks - patch 2 
R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/17071004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15221 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 08:07:45 +00:00
yurys@chromium.org
2ab2e4843e Introduce THREADED_PROFILED_TEST macro 
A bunch of tests in test-api.cc need to be executed two times: with CPU profiler on and off to check different code paths. There are only two such tests at the moment but I'm going to add more and having this logic duplicated in all these tests look awkward. The tests are executed as part of Threading* tests and there is no much sense in running CPU profiler in that case. This change addresses both problems by introducing THREADED_PROFILED_TEST macro which mosly resembles THREADED_TEST except that when such test is executed as a standalone test (not part of a test-api/Threading*) it will first run the test normally and the start CPU profiler and run the test again.

BUG=244580
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/17072002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15220 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
 2013-06-20 06:46:56 +00:00