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Author SHA1 Message Date
svenpanne
83bc009d46 Added Donald Stence to PPC owners. 
Review URL: https://codereview.chromium.org/1065443004

Cr-Commit-Position: refs/heads/master@{#27830}
 2015-04-15 07:00:11 +00:00
bmeurer
f236777bfe [x64] Use xorl to materialize smi zero. 
Before we always loaded smi zero via a movabs with a 64-bit immediate,
which is pretty expensive compared to the xorl.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1085153002

Cr-Commit-Position: refs/heads/master@{#27829}
 2015-04-15 06:13:40 +00:00
v8-autoroll
4ceada055d Update V8 DEPS. 
Rolling v8/build/gyp to 2a5511bd901f328db10d0b6415c864a5ff59fc81

Rolling v8/tools/clang to 330d3b5bd0ecf77d0d612081ba058ba01adfb67b

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1091453002

Cr-Commit-Position: refs/heads/master@{#27828}
 2015-04-15 03:28:43 +00:00
mvstanton
776770c0e4 VectorICs: megamorphic keyed loads in crankshaft don't need a vector. 
This needs "Pass load ic state through the Oracle"
(https://codereview.chromium.org/1083933002/) to land first.

BUG=
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/1083083002

Cr-Commit-Position: refs/heads/master@{#27827}
 2015-04-15 02:35:34 +00:00
mvstanton
4598f1d376 Pass load ic state through the Oracle. 
We'd like to know in optimized code with more precision what feedback
state was achieved for a load.

R=dcarney@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1083933002

Cr-Commit-Position: refs/heads/master@{#27826}
 2015-04-15 01:24:35 +00:00
paul.lind
592c0fe7b6 MIPS: [turbofan] Load immortal heap objects from the heap roots. 
Port 5d2de78a77

BUG=

Review URL: https://codereview.chromium.org/1085693003

Cr-Commit-Position: refs/heads/master@{#27825}
 2015-04-14 16:39:48 +00:00
wingo
71d3213a3f Allow eval/arguments in arrow functions 
R=arv@chromium.org, adamk@chromium.org, marja@chromium.org
BUG=v8:4020
LOG=N

Review URL: https://codereview.chromium.org/1061983004

Cr-Commit-Position: refs/heads/master@{#27824}
 2015-04-14 15:37:18 +00:00
mbrandy
8ad33d6db6 PPC: [turbofan] Load immortal heap objects from the heap roots. 
Port 5d2de78a77

Original commit message:
It's cheaper to materialize heap constants by loading from the roots
array instead of embedding the constant into the instruction stream, at
least on x64, arm and arm64.

Drive-by-fix: Also cleanup the materialize constant from frame
optimization.

R=michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1075303003

Cr-Commit-Position: refs/heads/master@{#27823}
 2015-04-14 15:17:26 +00:00
jkummerow
3eb277f270 %GetOptimizationStatus(): Unconditionally return a sentinel when --always-opt is present 
Review URL: https://codereview.chromium.org/1086923002

Cr-Commit-Position: refs/heads/master@{#27822}
 2015-04-14 14:57:48 +00:00
jochen
e683048416 Reland "Remove support for thread-based recompilation" 
Original issue's description:
> Remove support for thread-based recompilation
>
> BUG=v8:3608
> R=yangguo@chromium.org
> LOG=y
>
> Committed: https://crrev.com/ed5db223a19dfe126af01
> Cr-Commit-Position: refs/heads/master@{#27619}

BUG=v8:3608
R=yangguo@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/1087763003

Cr-Commit-Position: refs/heads/master@{#27821}
 2015-04-14 13:57:29 +00:00
machenbach
bd92c27144 [cq] Add mips compile trybots. 
NOTRY=true

Review URL: https://codereview.chromium.org/1051093004

Cr-Commit-Position: refs/heads/master@{#27820}
 2015-04-14 13:43:32 +00:00
jarin
31994391ab Insert a filler at the new space top even if the top is at the limit. 
BUG=chromium:470390
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1066653003

Cr-Commit-Position: refs/heads/master@{#27819}
 2015-04-14 13:42:25 +00:00
bmeurer
5d2de78a77 [turbofan] Load immortal heap objects from the heap roots. 
It's cheaper to materialize heap constants by loading from the roots
array instead of embedding the constant into the instruction stream, at
least on x64, arm and arm64.

Drive-by-fix: Also cleanup the materialize constant from frame
optimization.

R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/1088913002

Cr-Commit-Position: refs/heads/master@{#27818}
 2015-04-14 12:50:37 +00:00
mvstanton
2ebb794b4f VectorICs: recreate feedback vector if scoping changes on recompile. 
BUG=476488
LOG=N
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1080253003

Cr-Commit-Position: refs/heads/master@{#27817}
 2015-04-14 12:31:31 +00:00
jochen
cf663c487f Revert of Reland "Remove support for thread-based recompilation" (patchset #1 id:1 of https://codereview.chromium.org/1059853004/) 
Reason for revert:
still times out

Original issue's description:
> Reland "Remove support for thread-based recompilation"
>
> Original issue's description:
> > Remove support for thread-based recompilation
> >
> > BUG=v8:3608
> > R=yangguo@chromium.org
> > LOG=y
> >
> > Committed: https://crrev.com/ed5db223a19dfe126af012e894582251aa3635d7
> > Cr-Commit-Position: refs/heads/master@{#27619}
>
> BUG=v8:3608
> R=yangguo@chromium.org
> LOG=y
>
> Committed: https://crrev.com/f1ceccb8b8b352a91e6366e3e3103f1db0df6afb
> Cr-Commit-Position: refs/heads/master@{#27813}

TBR=yangguo@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3608

Review URL: https://codereview.chromium.org/1082183003

Cr-Commit-Position: refs/heads/master@{#27816}
 2015-04-14 12:29:26 +00:00
yangguo
2c01bd34b0 Fix Math.log10 implementation for 1 - Number.EPSILON. 
R=svenpanne@chromium.org
BUG=v8:4025
LOG=N

Review URL: https://codereview.chromium.org/1084853002

Cr-Commit-Position: refs/heads/master@{#27815}
 2015-04-14 11:56:02 +00:00
jochen
835eeafe32 Revert "Remove early bail-out in VisitWeakList to investigate chrasher." 
>  BUG=468601
>  LOG=n
>
>  Review URL: https://codereview.chromium.org/1016353002
>
>  Cr-Commit-Position: refs/heads/master@{#27317}

R=hpayer@chromium.org
BUG=v8:3996,chromium:468601
LOG=n

Review URL: https://codereview.chromium.org/1080303002

Cr-Commit-Position: refs/heads/master@{#27814}
 2015-04-14 10:55:16 +00:00
jochen
f1ceccb8b8 Reland "Remove support for thread-based recompilation" 
Original issue's description:
> Remove support for thread-based recompilation
>
> BUG=v8:3608
> R=yangguo@chromium.org
> LOG=y
>
> Committed: https://crrev.com/ed5db223a19dfe126af012e894582251aa3635d7
> Cr-Commit-Position: refs/heads/master@{#27619}

BUG=v8:3608
R=yangguo@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/1059853004

Cr-Commit-Position: refs/heads/master@{#27813}
 2015-04-14 10:26:41 +00:00
dslomov
3c5218f6fa Add a test for subclass maps. 
R=arv@chromium.org

Review URL: https://codereview.chromium.org/1052963002

Cr-Commit-Position: refs/heads/master@{#27812}
 2015-04-14 09:59:02 +00:00
jochen
05ed6cb6b9 Put newly allocated buffers at the right end of the buffers list 
If a major gc happens between allocation and initialization of the
buffer, it might be already in old space. Since we need the list of
buffers to be sorted from new to old, we keep track of the last buffer
and put old buffers to the end

BUG=chromium:476032
R=hpayer@chromium.org,dslomov@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1079923003

Cr-Commit-Position: refs/heads/master@{#27811}
 2015-04-14 09:26:10 +00:00
yangguo
0a9aa17476 Revert of Revert of Revert of Wrap typed array implementations in functions. (patchset #1 id:1 of https://codereview.chromium.org/1083013002/) 
Reason for revert:
Seems to still break those tests.

Original issue's description:
> Revert of Revert of Wrap typed array implementations in functions. (patchset #1 id:1 of https://codereview.chromium.org/1086683002/)
>
> Reason for revert:
> I don't think this is the cause.
>
> Original issue's description:
> > Revert of Wrap typed array implementations in functions. (patchset #1 id:1 of https://codereview.chromium.org/1082703003/)
> >
> > Reason for revert:
> > [Sheriff] Flaky nosnap failures:
> > http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20nosnap%20-%20debug%20-%201/builds/1720
> > http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug/builds/3312
> > http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug/builds/3313
> >
> > Original issue's description:
> > > Wrap typed array implementations in functions.
> > >
> > > R=mvstanton@chromium.org
> > >
> > > Committed: https://crrev.com/6fc394a15614b74776f9bbeeb0486f430bdc8597
> > > Cr-Commit-Position: refs/heads/master@{#27784}
> >
> > TBR=mvstanton@chromium.org,yangguo@chromium.org
> > NOPRESUBMIT=true
> > NOTREECHECKS=true
> > NOTRY=true
> >
> > Committed: https://crrev.com/8e3fa7adf20f4f9c9125076a878d601eee7c9f35
> > Cr-Commit-Position: refs/heads/master@{#27789}
>
> TBR=mvstanton@chromium.org,machenbach@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Committed: https://crrev.com/d7fe3b83f5dfa997f0c8a29436a22b999dc49a76
> Cr-Commit-Position: refs/heads/master@{#27803}

TBR=mvstanton@chromium.org,machenbach@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1088863002

Cr-Commit-Position: refs/heads/master@{#27810}
 2015-04-14 09:24:28 +00:00
dslomov
219f4a9eb4 Avoid modifying the real context chain for debug evaluation. 
Instead of modifying a context chain and then modifying it back, causing
potential mismatches, we clone the inner context chain and evaluate
the expression in this cloned context. We then copy all local variable
values back if needed.

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

Review URL: https://codereview.chromium.org/1088503003

Cr-Commit-Position: refs/heads/master@{#27809}
 2015-04-14 09:07:55 +00:00
dcarney
2299f57fd3 [turbofan] Get rid of SourcePositionInstruction. 
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1060373006

Cr-Commit-Position: refs/heads/master@{#27808}
 2015-04-14 08:08:28 +00:00
chunyang.dai
31a3d5fcd2 X87: Disable the test case for X87 since f3338dd3b0 
The overwrite-builtins test cases will throw one expected exception
  and the exception message should include the source position in the JS
  file. But crankshaft compiler does not generate the source position for
  it when creating the flow graph by default. The source position information
  is always zero. So it failed when comparing with the reference file.

  If we use crankshaft compiler on IA32 platform to run this test case, it
  has the same failure.

BUG=

Review URL: https://codereview.chromium.org/1086503002

Cr-Commit-Position: refs/heads/master@{#27807}
 2015-04-14 08:05:35 +00:00
smcgruer
a684535693 Restore V8_LIBC_UCLIBC as a libc option. 
As uClibc defines __GLIBC__ in an attempt to look like glibc, V8_LIBC_GLIBC
was true for uClibc as well. Checking for uClibc before glibc fixes this
and restores the correct behavior.

BUG=

Review URL: https://codereview.chromium.org/1066573005

Cr-Commit-Position: refs/heads/master@{#27806}
 2015-04-14 07:54:26 +00:00
dcarney
f7ace77427 fix variable shadowing 
BUG=427616
LOG=N

Review URL: https://codereview.chromium.org/1087533002

Cr-Commit-Position: refs/heads/master@{#27805}
 2015-04-14 07:11:38 +00:00
hpayer
8b737395c8 Experiment: reduce heap growing factor to investigate OOM impact. 
This CL will be reverted after getting sufficient data.
BUG=

Review URL: https://codereview.chromium.org/1060533003

Cr-Commit-Position: refs/heads/master@{#27804}
 2015-04-14 06:58:36 +00:00
yangguo
d7fe3b83f5 Revert of Revert of Wrap typed array implementations in functions. (patchset #1 id:1 of https://codereview.chromium.org/1086683002/) 
Reason for revert:
I don't think this is the cause.

Original issue's description:
> Revert of Wrap typed array implementations in functions. (patchset #1 id:1 of https://codereview.chromium.org/1082703003/)
>
> Reason for revert:
> [Sheriff] Flaky nosnap failures:
> http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20nosnap%20-%20debug%20-%201/builds/1720
> http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug/builds/3312
> http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug/builds/3313
>
> Original issue's description:
> > Wrap typed array implementations in functions.
> >
> > R=mvstanton@chromium.org
> >
> > Committed: https://crrev.com/6fc394a15614b74776f9bbeeb0486f430bdc8597
> > Cr-Commit-Position: refs/heads/master@{#27784}
>
> TBR=mvstanton@chromium.org,yangguo@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Committed: https://crrev.com/8e3fa7adf20f4f9c9125076a878d601eee7c9f35
> Cr-Commit-Position: refs/heads/master@{#27789}

TBR=mvstanton@chromium.org,machenbach@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1083013002

Cr-Commit-Position: refs/heads/master@{#27803}
 2015-04-14 05:58:21 +00:00
chunyang.dai
2b16f54d94 X87: Remove unnecessary options from HTailCallThroughMegamorphicCache. 
port e0844a24d3 (r27793).

original commit message:

   These options were added for a hydrogen code stub version of
the VectorIC dispatcher, which was discontinued.

BUG=

Review URL: https://codereview.chromium.org/1087573003

Cr-Commit-Position: refs/heads/master@{#27802}
 2015-04-14 05:53:19 +00:00
chunyang.dai
fc6e623425 X87: Change near jump to far jump to fix the jump distance check error. 
The assembler code generated by the DeoptimizeIf(...) function under X87 is larger
  and the  distance between the link point and the bind point which has two DeoptimizeIf()
  is larger then near link distance (127) for labels.

BUG=

Review URL: https://codereview.chromium.org/1065893003

Cr-Commit-Position: refs/heads/master@{#27801}
 2015-04-14 02:09:10 +00:00
paul.lind
d30ea0ee1d MIPS: Split TemplateHashMapImpl::Lookup into two methods. 
Port 5277c41044.

BUG=

Review URL: https://codereview.chromium.org/1084723003

Cr-Commit-Position: refs/heads/master@{#27800}
 2015-04-14 00:17:04 +00:00
adamk
5277c41044 Split TemplateHashMapImpl::Lookup into two methods 
This avoids both a mysterious boolean argument ("insert") and lets
non-mutating lookups skip passing an allocator (in one such case,
we were passing a scary-looking ZoneAllocationPolicy(NULL)!).

Review URL: https://codereview.chromium.org/1074943002

Cr-Commit-Position: refs/heads/master@{#27799}
 2015-04-13 19:01:15 +00:00
arv
186dd69b3a [es6] Fix length property of collection constructors 
{Map, Set, WeakMap, WeakSet}.length should be 0.

BUG=v8:4021
LOG=N
R=adamk@chromium.org

Review URL: https://codereview.chromium.org/1073233002

Cr-Commit-Position: refs/heads/master@{#27798}
 2015-04-13 18:59:39 +00:00
mbrandy
3118df2362 PPC: Remove unnecessary options from HTailCallThroughMegamorphicCache 
Port e0844a24d3

Original commit message:
These options were added for a hydrogen code stub version of
the VectorIC dispatcher, which was discontinued.

R=mvstanton@chromium.org, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1088573002

Cr-Commit-Position: refs/heads/master@{#27797}
 2015-04-13 18:44:43 +00:00
conradw
c983689d39 [strong] Implement static restrictions on direct eval 
Does not entirely disallow the use of 'eval' as an identifier in strong mode,
as originally proposed.

BUG=v8:3956
LOG=N

Review URL: https://codereview.chromium.org/1059273004

Cr-Commit-Position: refs/heads/master@{#27796}
 2015-04-13 17:25:15 +00:00
verwaest
434b456b51 Fix indirect push 
BUG=chromium:388665
LOG=n

Review URL: https://codereview.chromium.org/1087463003

Cr-Commit-Position: refs/heads/master@{#27795}
 2015-04-13 16:25:33 +00:00
mbrandy
c7f40ce738 PPC: Fix NaN Canonicalization. 
Use fsub rather than fadd to avoid stripping the sign from minus zero.

Fixes mjsunit/result-table-min and mjsunit/result-table-max test failures.

R=michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1084583003

Cr-Commit-Position: refs/heads/master@{#27794}
 2015-04-13 16:24:24 +00:00
mvstanton
e0844a24d3 Remove unnecessary options from HTailCallThroughMegamorphicCache 
These options were added for a hydrogen code stub version of
the VectorIC dispatcher, which was discontinued.

R=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1081883002

Cr-Commit-Position: refs/heads/master@{#27793}
 2015-04-13 16:23:23 +00:00
titzer
069e6b2f5f [turbofan] Optimize loads of global constants in JSTypedLowering. 
R=mstarzinger@chromium.org,verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1077343002

Cr-Commit-Position: refs/heads/master@{#27792}
 2015-04-13 16:22:05 +00:00
arv
0e539d1ca9 Revert "ES6: Number and Boolean prototype should be ordinary objects" 
This reverts commit e965a1f84a.

The reason is that it breaks jsfiddle.com

BUG=476437, v8:4001
LOG=N
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/1086673002

Cr-Commit-Position: refs/heads/master@{#27791}
 2015-04-13 16:21:00 +00:00
machenbach
dc65e62abd Revert of VectorICs: megamorphic keyed loads in crankshaft don't need a vector. (patchset #3 id:40001 of https://codereview.chromium.org/1067573003/) 
Reason for revert:
[Sheriff] Speculative revert for windows failure... will reland if it doesn't help:
http://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20debug%20-%202/builds/2891

Original issue's description:
> VectorICs: megamorphic keyed loads in crankshaft don't need a vector.
>
> They are content with a dummy vector, as MISSES won't result in
> changing the real vector/slot at all.
>
> BUG=
>
> Committed: https://crrev.com/c8e4d57d3b3036a05902f5b916cb5d853a57393c
> Cr-Commit-Position: refs/heads/master@{#27788}

TBR=dcarney@chromium.org,mvstanton@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1060263003

Cr-Commit-Position: refs/heads/master@{#27790}
 2015-04-13 16:19:29 +00:00
machenbach
8e3fa7adf2 Revert of Wrap typed array implementations in functions. (patchset #1 id:1 of https://codereview.chromium.org/1082703003/) 
Reason for revert:
[Sheriff] Flaky nosnap failures:
http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20sim%20-%20nosnap%20-%20debug%20-%201/builds/1720
http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug/builds/3312
http://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20nosnap%20-%20debug/builds/3313

Original issue's description:
> Wrap typed array implementations in functions.
>
> R=mvstanton@chromium.org
>
> Committed: https://crrev.com/6fc394a15614b74776f9bbeeb0486f430bdc8597
> Cr-Commit-Position: refs/heads/master@{#27784}

TBR=mvstanton@chromium.org,yangguo@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1086683002

Cr-Commit-Position: refs/heads/master@{#27789}
 2015-04-13 15:39:46 +00:00
mvstanton
c8e4d57d3b VectorICs: megamorphic keyed loads in crankshaft don't need a vector. 
They are content with a dummy vector, as MISSES won't result in
changing the real vector/slot at all.

BUG=

Review URL: https://codereview.chromium.org/1067573003

Cr-Commit-Position: refs/heads/master@{#27788}
 2015-04-13 13:50:26 +00:00
dcarney
ffe290fe2a [turbofan] remove register operand cache 
BUG=

Review URL: https://codereview.chromium.org/1085623002

Cr-Commit-Position: refs/heads/master@{#27787}
 2015-04-13 13:48:07 +00:00
dcarney
b0f3074b36 collect phantom handle data before it gets overwritten 
R=jochen@chromium.org, hpayer@chromium.org, erikcorry@chromium.org

BUG=

Review URL: https://codereview.chromium.org/1064713005

Cr-Commit-Position: refs/heads/master@{#27786}
 2015-04-13 13:15:17 +00:00
dcarney
97499e3334 [turbofan] cleanup PointerMap 
rename to ReferenceMap
use ZoneVector for storage
drop dead code

BUG=

Review URL: https://codereview.chromium.org/1081053002

Cr-Commit-Position: refs/heads/master@{#27785}
 2015-04-13 12:45:50 +00:00
yangguo
6fc394a156 Wrap typed array implementations in functions. 
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/1082703003

Cr-Commit-Position: refs/heads/master@{#27784}
 2015-04-13 12:22:05 +00:00
verwaest
ba24e67696 Remove kForInStatementIsNotFastCase bailout reason 
BUG=

Review URL: https://codereview.chromium.org/1081803002

Cr-Commit-Position: refs/heads/master@{#27783}
 2015-04-13 11:37:10 +00:00
jochen
ada32ae636 Expose ArrayBufferView::HasBuffer 
This allows the embedder to decide whether it's worthwhile to copy the
contents to avoid materializing a buffer.

BUG=v8:3996
R=dslomov@chromium.org,kbr@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/1084513002

Cr-Commit-Position: refs/heads/master@{#27782}
 2015-04-13 11:27:58 +00:00
vegorov
021f738127 Treat HArgumentsObject as a safe use during Uint32 analysis phase. 
Deoptimization infrastructure already handles it correctly.

This change fixes repetitive deoptimizations in the code like this:

    var u32 = new Uint32Array(1);
    u32[0] = -1;

    function tr(x) { return x|0; }
    function ld() { return tr(u32[0]); }

    while (true) ld();

Currently inlined tr will contain HArgumentsObject that is considered uint32-unsafe use and prevents u32[0] from becoming uint32 load - instead a speculative int32 load is generated which just deopts.

BUG=

Review URL: https://codereview.chromium.org/1077113002

Cr-Commit-Position: refs/heads/master@{#27781}
 2015-04-13 10:47:15 +00:00