review.tizen.org Git - platform/upstream/v8.git/log

Re-implement %Generator% intrinsic as an object

From ES6 25.2.3 ("Properties of the GeneratorFunction Prototype
Object"):

> The GeneratorFunction prototype object is an ordinary object. It is
> not a function object and does not have an [[ECMAScriptCode]] internal
> slot or any other of the internal slots listed in Table 27 or Table
> 56.

Introduce one assertion for the value's type and additional tests for its
properties. Remove an invalid assertion that fails as a result of this
fix.

BUG=v8:3991
LOG=N

Review URL: https://codereview.chromium.org/1062633002

Cr-Commit-Position: refs/heads/master@{#27603}

Filter out remembered slots that are at the start of an object.

These slots are invalid and can result in a broken offset when slot index and start of object are equal and are at the beginning of a cell.

Moreover, make DCHECKs CHECKs to catch bugs in the wild.

BUG=chromium:473174
LOG=n

Review URL: https://codereview.chromium.org/1051243004

Cr-Commit-Position: refs/heads/master@{#27602}

MIPS: Major fixes and clean-up in asm. for instruction encoding.

- Fixed single float register type instruction en[de]coding in assembler and disassembler.
- Added max and min instructions for r6 and corresponding tests.
- Fixed selection instruction for boundary cases in simulator.
- Update assembler tests to be more thorough wrt boundary cases.

TEST=cctest/test-assembler-mips64/MIPS17, MIPS18
     cctest/test-disasm-mips64/Type1
     cctest/test-assembler-mips/MIPS16, MIPS17
     cctest/test-disasm-mips/Type1
BUG=

Review URL: https://codereview.chromium.org/1057323002

Cr-Commit-Position: refs/heads/master@{#27601}

Update V8 DEPS.

Rolling v8/third_party/icu to e4c31439828d356525b71ef81a6d61ea50d7d673

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1058383002

Cr-Commit-Position: refs/heads/master@{#27600}

MIPS64: Improve deopt jump table code size.

The number of generated instructions per table entry is reduced from six to
two, or four in worst-case scenario.

TEST=
BUG=

Review URL: https://codereview.chromium.org/1059213002

Cr-Commit-Position: refs/heads/master@{#27599}

Update V8 DEPS.

Rolling v8/build/gyp to 2889664b9fa88cce175c5c7cdf207d28420a7412

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1057013003

Cr-Commit-Position: refs/heads/master@{#27598}

X87: Generate common StoreFastElementStubs ahead of time

port 16ee55097a01a229634095226f7a207bea3626de (r27536)

original commit message:

Generate common StoreFastElementStubs ahead of time

BUG=

Review URL: https://codereview.chromium.org/1052413002

Cr-Commit-Position: refs/heads/master@{#27597}

x87: v8:3539 - hold constructor feedback in weak cells

port b134ae74b5fe4750588cef81a06b6fabd2507409 (r27581)

original commit message:

v8:3539 - hold constructor feedback in weak cells

BUG=

Review URL: https://codereview.chromium.org/1051253004

Cr-Commit-Position: refs/heads/master@{#27596}

X87: Ensure object literal element boilerplates aren't modified.

port 7c347c545e33d279b5aa476e754a5358201be846 (r27511)

original commit message:

A bug allows JSObject literals with elements to have the elements in the
boilerplate modified.

BUG=

Review URL: https://codereview.chromium.org/1057883004

Cr-Commit-Position: refs/heads/master@{#27595}

PPC: v8:3539 - hold constructor feedback in weak cells

Port b134ae74b5fe4750588cef81a06b6fabd2507409

Original commit message:
BUG=v8:3539
LOG=N

R=verwaest@chromium.org, mbrandy@us.ibm.com

Review URL: https://codereview.chromium.org/1052973003

Cr-Commit-Position: refs/heads/master@{#27594}

MIPS: Remove unused J(Label *).

Remove unused macro-asm instruction and associated address patching.

On mips64, remove unused JumpLabelToJumpRegister(). On mips, rename
it appropriately (it's still used there for JR->J optimizations).

BUG=

Review URL: https://codereview.chromium.org/1059433003

Cr-Commit-Position: refs/heads/master@{#27593}

MIPS: Fix another bug with mozilla regress-396684.js

As with TF fix 94506cc3, correctly support absurdly large stack
adjustments.

TEST=mozilla/js/tests/js1_5/Regress/regress-396684.js
BUG=

Review URL: https://codereview.chromium.org/1057763002

Cr-Commit-Position: refs/heads/master@{#27592}

[turbofan] Improve branch folding over phis and ranges.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1057843002

Cr-Commit-Position: refs/heads/master@{#27591}

Add missing license headers for some cctests.

BUG=chromium:98597
LOG=N

Review URL: https://codereview.chromium.org/1052943003

Cr-Commit-Position: refs/heads/master@{#27590}

Revert of make ToLocalCheck crash in release mode (patchset #1 id:1 of https://codereview.chromium.org/1043363005/)

Reason for revert:
breaks some devtools things

Original issue's description:
> make ToLocalCheck crash in release mode
>
> R=svenpanne@chromium.org
> BUG=
>
> Committed: https://crrev.com/ce7cc5119c1e031bf1eb8476fbf5e55bef738f94
> Cr-Commit-Position: refs/heads/master@{#27585}

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

Review URL: https://codereview.chromium.org/1057873003

Cr-Commit-Position: refs/heads/master@{#27589}

[turbofan] Keep AstGraphBuilder context chain length in sync.

This keeps the length of the context chain tracked by the environment
in sync even for local control flow commands. It removes the need to
guess the correct chain length at Environment::Merge points.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1045703003

Cr-Commit-Position: refs/heads/master@{#27588}

MIPS: v8:3539 - hold constructor feedback in weak cells

BUG=v8:3539
LOG=N

Review URL: https://codereview.chromium.org/1038043002

Cr-Commit-Position: refs/heads/master@{#27587}

Support for typed arrays added to Heap::RightTrimFixedArray().

BUG=chromium:472513
LOG=Y

Review URL: https://codereview.chromium.org/1058793002

Cr-Commit-Position: refs/heads/master@{#27586}

make ToLocalCheck crash in release mode

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1043363005

Cr-Commit-Position: refs/heads/master@{#27585}

Added version tag to the CQ config

R=machenbach@chromium.org
BUG=chromium:408675
LOG=N

Review URL: https://codereview.chromium.org/1051653003

Cr-Commit-Position: refs/heads/master@{#27584}

Fix the bug in CompareIC_GenerateNumber for X87 platform.

The original code will not update the IC info if one of parameter is SMI. It Can not handle Number + Smi.

BUG=

Review URL: https://codereview.chromium.org/1056663005

Cr-Commit-Position: refs/heads/master@{#27583}

[turbofan] Reduce duplication between ControlReducer::ReduceIf(True,False).

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1053583005

Cr-Commit-Position: refs/heads/master@{#27582}

v8:3539 - hold constructor feedback in weak cells

BUG=v8:3539
R=verwaest@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1029093002

Cr-Commit-Position: refs/heads/master@{#27581}

Expose an API on ArrayBufferView to copy out content w/o changing the buffer

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

Review URL: https://codereview.chromium.org/1041403003

Cr-Commit-Position: refs/heads/master@{#27580}

Add initial set of sub directory OWNERS file

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

Review URL: https://codereview.chromium.org/960903003

Cr-Commit-Position: refs/heads/master@{#27579}

Fixed the range information for string lengths.

Currently, this doesn't really help to generate better code,
nevertheless this is the right thing to do. When our type system(s)
are fixed, this should avoid falling back to floating point operations
in various cases.

Review URL: https://codereview.chromium.org/1057813002

Cr-Commit-Position: refs/heads/master@{#27578}

Disable a new failing test262-es6 test

language/asi/S7.9_A5.7_T1

http://build.chromium.org/p/client.v8/builders/V8%20Linux/builds/3024/steps/Test262-es6/logs/S7.9_A5.7_T1

This looks suspicious. Maybe the monkeyYaml is the reason for this?

BUG=None
TBR=adamk

Review URL: https://codereview.chromium.org/1052083002

Cr-Commit-Position: refs/heads/master@{#27577}

Update test262-es6 to 2015-03-31

BUG=None
LOG=N
R=adamk, rossberg

Review URL: https://codereview.chromium.org/1052013002

Cr-Commit-Position: refs/heads/master@{#27576}

MIPS: Rename BranchF functions.

BUG=

Review URL: https://codereview.chromium.org/1052653003

Cr-Commit-Position: refs/heads/master@{#27575}

MIPS: Fix stack claim and store to slot for large sizes.

Could not encode the large slot number in opcode MiscField.

TEST=mozilla/js/tests/js1_5/Regress/regress-396684.js
BUG=

Review URL: https://codereview.chromium.org/1043393002

Cr-Commit-Position: refs/heads/master@{#27574}

Fix external-snapshot startup when snapshot is missing, but natives source is available

R=vogelheim@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1049383004

Cr-Commit-Position: refs/heads/master@{#27573}

ES6: Error functions should extend Error

The /NativeError/ functions should have Error as their [[Prototype]].

http://people.mozilla.org/~jorendorff/es6-draft.html#sec-properties-of-the-nativeerror-constructors

BUG=v8:3998
LOG=N
R=adamk, dslomov@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1049323003

Cr-Commit-Position: refs/heads/master@{#27572}

Reland: Fix JSON parser Handle leak (previous CL 1041483004)

R=mstarzinger@chromium.org
BUG=v8:3976
BUG=472504
LOG=y

Review URL: https://codereview.chromium.org/1051833002

Cr-Commit-Position: refs/heads/master@{#27571}

Turn off overapproximation of the weak closure again

As long as we still have to process global handles, the impact is not
yet worthwhile

BUG=v8:3862
R=hpayer@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/1050443002

Cr-Commit-Position: refs/heads/master@{#27570}

[es6] Object.getOwnPropertyDescriptor should wrap primitives

In ES6 Object.getOwnPropertyDescriptor should call ToObject, which
means that primitive values will return descriptors from the wrapper.

BUG=v8:3964
LOG=N
R=adamk, rossberg@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/998163004

Cr-Commit-Position: refs/heads/master@{#27569}

Revert of Remove promotion backup case and report OOM instead. (patchset #2 id:20001 of https://codereview.chromium.org/977013003/)

Reason for revert:
Spike in OOM crashes: crbug.com/403113

Original issue's description:
> Remove promotion backup case and report OOM instead.
>
> There are no test cases for this piece of code and it is really hard to test. If this rare case triggers, we are anyway in an OOM situation and would crash probably soon afterwards.
>
> BUG=
>
> Committed: https://crrev.com/e813afaf127ab80290153ab676dc07212bdc8946
> Cr-Commit-Position: refs/heads/master@{#27026}

TBR=mstarzinger@chromium.org,hpayer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1050113002

Cr-Commit-Position: refs/heads/master@{#27568}

Remove invalid assertion

The removed assertion consistently passes not because the invoked
`close` method internally throws a `TypeError` but because the `close`
method does not exist. The ES6 specification does not define a `close`
method on the GeneratorPrototype, so this test is a tautology.

BUG=None
LOG=N
R=arv

Review URL: https://codereview.chromium.org/1046963002

Cr-Commit-Position: refs/heads/master@{#27567}

Re-write duplicated assertions

The modified assertions targeted the property descriptor for the
template object's first "cooked" value. The code immediately preceeding
these statements asserts these values.

Update the assertions to instead target the property descriptor for the
template object's first "raw" value (which are otherwise untested).

BUG=

Review URL: https://codereview.chromium.org/1049523003

Cr-Commit-Position: refs/heads/master@{#27566}

Revert of Add CHECKs when updating pointers from the slots and store buffers (patchset #3 id:40001 of https://codereview.chromium.org/1035763002/)

Reason for revert:
Got one dev-channel with this. Should be enough.

Original issue's description:
> Add CHECKs when updating pointers from the slots and store buffers
>
> We want to verify that we always overwrite heap objects with heap
> objects, and non-heap objects with non-heap objects
>
> BUG=chromium:452095
> R=hpayer@chromium.org
> LOG=n
>
> Committed: https://crrev.com/58fbcfac8ae82b1241f07e1b8ea81a5973514c11
> Cr-Commit-Position: refs/heads/master@{#27479}

TBR=hpayer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:452095

Review URL: https://codereview.chromium.org/1052713002

Cr-Commit-Position: refs/heads/master@{#27565}

Revert of Correctly compute line numbers in functions from the function constructor. (patchset #5 id:80001 of https://codereview.chromium.org/701093003/)

Reason for revert:
Locations from New Function are broken in DevTools.

Original issue's description:
> Correctly compute line numbers in functions from the function constructor.
>
> R=aandrey@chromium.org
> BUG=chromium:109362
> LOG=Y
>
> Committed: https://code.google.com/p/v8/source/detail?r=25289

TBR=aandrey@chromium.org,yangguo@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:109362
LOG=Y

Review URL: https://codereview.chromium.org/1053563002

Cr-Commit-Position: refs/heads/master@{#27564}

usage: Tool to check where a git commit was merged and reverted.
       [-h] [-g GIT_DIR] hash

positional arguments:
  hash                  Hash of the commit to be searched.

optional arguments:
  -h, --help            show this help message and exit
  -g GIT_DIR, --git-dir GIT_DIR
                        The path to your git working directory.

BUG=

Review URL: https://codereview.chromium.org/1033043002

Cr-Commit-Position: refs/heads/master@{#27563}

Revert of Fix JSON parser Handle leak (patchset #3 id:40001 of https://codereview.chromium.org/1041483004/)

Reason for revert:
Reverting due to JSOn parser failures

Original issue's description:
> Fix JSON parser Handle leak
>
> R=verwaest@chromium.org
> BUG=v8:3976
> LOG=y
>
> Committed: https://crrev.com/1ec850383bb82f6d8bebc7416e5f50b649d1eeaa
> Cr-Commit-Position: refs/heads/master@{#27512}

TBR=verwaest@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3976

Review URL: https://codereview.chromium.org/1052593002

Cr-Commit-Position: refs/heads/master@{#27562}

Revert of Relax assert a little to fix flake on regress-3976 (patchset #1 id:1 of https://codereview.chromium.org/1045763002/)

Reason for revert:
Reverting due to JSOn parser failures

Original issue's description:
> Relax assert a little to fix flake on regress-3976
>
> R=verwaest@chromium.org
> NOTRY=true
> BUG=
>
> Committed: https://crrev.com/b20edd7772892ff8b2b280b35e521fbc2cc4a5f6
> Cr-Commit-Position: refs/heads/master@{#27515}

TBR=verwaest@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1050033003

Cr-Commit-Position: refs/heads/master@{#27561}

Whitespace change to trigger bots.

Cr-Commit-Position: refs/heads/master@{#27560}

[GN] Use correct toolchain for x64 target on Android

This commit is to fix the linking error:
../../v8/src/base/platform/platform-posix.cc:418: error: undefined reference to '__android_log_vprint'

Review URL: https://codereview.chromium.org/1037193003

Cr-Commit-Position: refs/heads/master@{#27559}

[es6] Object.getPrototypeOf should work with values

This reverts commit 992751d0dc5be63845a371cb9fb2c1313efb3bdf.

The final spec for Object.getPrototypeOf calls ToObject on the
parameter, which means that it should only throw for null and
undefined. For other non object values the prototype of the wrapper
should be used.

Difference from last time: Updated .status and will disable Blink
side tests as needed.

BUG=v8:3964
LOG=N
R=adamk, rossberg@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1051523003

Cr-Commit-Position: refs/heads/master@{#27558}

Add a UseCounter for Object.observe

It triggers once per context that calls observe (or attempts to access
any observation metadata, e.g. through Object.getNotifier).

Review URL: https://codereview.chromium.org/1048213002

Cr-Commit-Position: refs/heads/master@{#27557}

MIPS: Fix assembler test for selection instructions to be run for r6 only.

TEST=test-assembler-mips/MIPS16
BUG=

Review URL: https://codereview.chromium.org/1047223002

Cr-Commit-Position: refs/heads/master@{#27556}

MIPS64: Ensure object literal element boilerplates aren't modified.

Port 7c347c545e33d279b5aa476e754a5358201be846

BUG=

Review URL: https://codereview.chromium.org/1049793002

Cr-Commit-Position: refs/heads/master@{#27555}

[V8] Don't ignore sourceURL comment in inline scripts in .stack

In DevTools we've already used sourceURL in inline scripts.
This CL makes the behavior of the V8 in the same for Error.stack property and v8::StackTrace.

BUG=v8:3920
LOG=Y
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1044173002

Cr-Commit-Position: refs/heads/master@{#27554}

MIPS64: Fix exception return from regexp CheckStackGuardState().

Lack of sign extension on simulator builds gives bad value for
RETRY and EXCEPTION codes.

TEST=mjsunit/regexp-stack-overflow, regress-crbug-467047
BUG=v8:3992
LOG=n

Review URL: https://codereview.chromium.org/1040753003

Cr-Commit-Position: refs/heads/master@{#27553}

PPC: Ensure object literal element boilerplates aren't modified.

Port 7c347c545e33d279b5aa476e754a5358201be846

Original commit message:
A bug allows JSObject literals with elements to have the elements in the
boilerplate modified.

R=mbrandy@us.ibm.com

BUG=466993
LOG=N

Review URL: https://codereview.chromium.org/1046223002

Cr-Commit-Position: refs/heads/master@{#27552}

Finish 'MIPS: [turbofan] Add backend support for float32 operations.'

Add missing parts of the port to MIPS/MIPS64 implementations.

BUG=

Review URL: https://codereview.chromium.org/1047213002

Cr-Commit-Position: refs/heads/master@{#27551}

Deprecate IdleNotification()

Embedders should use IdleNotificationDeadline()

BUG=none
R=hpayer@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/1019793008

Cr-Commit-Position: refs/heads/master@{#27550}

Verify evacuation when sweeping is completed.

BUG=

Review URL: https://codereview.chromium.org/1050543002

Cr-Commit-Position: refs/heads/master@{#27549}

ES6: Unscopable should use ToBoolean

The spec settled on ToBoolean instead of only using not undefined.

BUG=v8:3827
LOG=N
R=adamk

Review URL: https://codereview.chromium.org/1045113002

Cr-Commit-Position: refs/heads/master@{#27548}

PPC: [turbofan] Add backend support for float32 operations.

Port 8dad78cdbd21c2cd02d6e0645313bd4b9983c78e

Original commit message:
This adds the basics necessary to support float32 operations in TurboFan.
The actual functionality required to detect safe float32 operations will
be added based on this later. Therefore this does not affect production
code except for some cleanup/refactoring.

In detail, this patchset contains the following features:
- Add support for float32 operations to arm, arm64, ia32 and x64
backends.
- Add float32 machine operators.
- Add support for float32 constants to simplified lowering.
- Handle float32 representation for phis in simplified lowering.

In addition, contains the following (related) cleanups:
- Fix/unify naming of backend instructions.
- Use AVX comparisons when available.
- Extend ArchOpcodeField to 9 bits (required for arm64).
- Refactor some code duplication in instruction selectors.

BUG=v8:3589
LOG=N

R=mbrandy@us.ibm.com

Review URL: https://codereview.chromium.org/1049253004

Cr-Commit-Position: refs/heads/master@{#27547}

[turbofan] Make throwing expressions kill the environment.

This ensures that all expressions that throw actually mark the current
environment as dead in the AstGraphBuilder. This prevents live ranges
from being unnecessarily increased by paths that don't fall-through.
Note that we can do that because Runtime::kThrowFoo never returns.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/1049203002

Cr-Commit-Position: refs/heads/master@{#27546}

Remove --harmony-numeric-literal flag

We have been shipping harmony numeric literals since M41

R=rossberg@chromium.org
LOG=Y

Review URL: https://codereview.chromium.org/1024603002

Cr-Commit-Position: refs/heads/master@{#27545}

Reland "Allow compaction when incremental marking is on."

BUG=chromium:450824
LOG=NO
TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1048013003

Cr-Commit-Position: refs/heads/master@{#27544}

[es6] Update test262 tests

Second try. Disabled the tests that were failing due to
https://github.com/tc39/test262/issues/215

This updates test262 to revision d24fd10 (2015/03/11).

The files moved around in the test repo and a lot of new tests are
failing.

BUG=None
LOG=N
R=adamk, rossberg

Review URL: https://codereview.chromium.org/1040093003

Cr-Commit-Position: refs/heads/master@{#27543}

[turbofan] Weaken a DCHECK to allow tagged numbers as double constants in frame states.

BUG=chromium:472078
LOG=n
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1047173002

Cr-Commit-Position: refs/heads/master@{#27542}

[turbofan] Fix properties of IrOpcode::kThrow operator.

This changes the IrOpcode::kThrow operator to have kNoThrow property,
which sounds unintuitive, but holds for our graphs. The operators is
used to indicate exceptional control flow out of the function, but in
itself does not throw, the throwing is done by a runtime call.

R=titzer@chromium.org
TEST=unittests/CommonOperatorTest/CommonSharedOperatorTest.Properties

Review URL: https://codereview.chromium.org/1046173002

Cr-Commit-Position: refs/heads/master@{#27541}

Added %_Likely/%_Unlikely intrinsics (special cases of GCC's __builin_expect).

Currently this only sets branch hints, so we get unlikely code "out of
the way", but in the long run the register allocator needs some love
to treat the unlikely code as, well, unlikely. :-)

Review URL: https://codereview.chromium.org/1048063002

Cr-Commit-Position: refs/heads/master@{#27540}

Put newspace evacuation in an EvacuationScope

BUG=chromium:471554
LOG=y
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1050493002

Cr-Commit-Position: refs/heads/master@{#27539}

[turbofan] smash GapInstruction into Instruction

R=titzer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1041163002

Cr-Commit-Position: refs/heads/master@{#27538}

[turbofan] Project exception value out of calls.

TEST=cctest/test-run-jsexceptions

Review URL: https://codereview.chromium.org/989123003

Cr-Commit-Position: refs/heads/master@{#27537}

Generate common StoreFastElementStubs ahead of time

BUG=

Review URL: https://codereview.chromium.org/1040183004

Cr-Commit-Position: refs/heads/master@{#27536}

Fix libdl dependency on Android and remove librt hack.

The libdl library is already included on target builds of Android and needs
to be added to the build command line with a particular order to avoid
undefined references in other libraries. Fix this by only explicitly including
it in host builds and relying on the implicit inclusion on target builds.

Also remove the librt hack which is not longer necessary due to the AOSP build
bot having been removed.

BUG=chromium:469973
LOG=Y

Review URL: https://codereview.chromium.org/1036133005

Cr-Commit-Position: refs/heads/master@{#27535}

MIPS64: [turbofan] Add backend support for float32 operations.

Port 8dad78cdbd21c2cd02d6e0645313bd4b9983c78e

Original commit message:
This adds the basics necessary to support float32 operations in TurboFan.
The actual functionality required to detect safe float32 operations will
be added based on this later. Therefore this does not affect production
code except for some cleanup/refactoring.

In detail, this patchset contains the following features:
- Add support for float32 operations to arm, arm64, ia32 and x64
backends.
- Add float32 machine operators.
- Add support for float32 constants to simplified lowering.
- Handle float32 representation for phis in simplified lowering.

In addition, contains the following (related) cleanups:
- Fix/unify naming of backend instructions.
- Use AVX comparisons when available.
- Extend ArchOpcodeField to 9 bits (required for arm64).
- Refactor some code duplication in instruction selectors.

BUG=

Review URL: https://codereview.chromium.org/1045203003

Cr-Commit-Position: refs/heads/master@{#27534}

ARM simulator needs a StackCheck in GetPropertyWithDefinedGetter.

Because simulators have a seperate JavaScript and C++ stack, and
because they try to avoid calling the runtime StackCheck function
on entry to every function, it can happen in recursive calls that
the C++ stack overflows while the JavaScript stack is okay. The
runtime StackCheck function would catch this, but as an optimization,
generated code only looks at the JavaScript stack pointer to
determine if it should make that runtime call.

R=ulan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1050433002

Cr-Commit-Position: refs/heads/master@{#27533}

Update V8 DEPS.

Rolling v8/third_party/icu to 46be516de5c83aa0b7b3b75be669b48e7a803290

Rolling v8/tools/clang to 6aa9a498bf4c1567efe9b78da82678ed1e8e3298

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1046053003

Cr-Commit-Position: refs/heads/master@{#27532}

MIPS: [turbofan] Add backend support for float32 operations.

Port 8dad78cdbd21c2cd02d6e0645313bd4b9983c78e

Original commit message:
This adds the basics necessary to support float32 operations in TurboFan.
The actual functionality required to detect safe float32 operations will
be added based on this later. Therefore this does not affect production
code except for some cleanup/refactoring.

In detail, this patchset contains the following features:
- Add support for float32 operations to arm, arm64, ia32 and x64
backends.
- Add float32 machine operators.
- Add support for float32 constants to simplified lowering.
- Handle float32 representation for phis in simplified lowering.

In addition, contains the following (related) cleanups:
- Fix/unify naming of backend instructions.
- Use AVX comparisons when available.
- Extend ArchOpcodeField to 9 bits (required for arm64).
- Refactor some code duplication in instruction selectors.

BUG=v8:3589
LOG=n

Review URL: https://codereview.chromium.org/1046953004

Cr-Commit-Position: refs/heads/master@{#27531}

MIPS: Refactor simulator and add selection instructions for r6.

TEST=
BUG=

Review URL: https://codereview.chromium.org/1046873004

Cr-Commit-Position: refs/heads/master@{#27530}

Ensure that GC idle notifications either make progress or stop requesting more GCs.

The V8::IdleNotification will only return 'True' when the gc idle time handler
thinks there is no more GC which can be done. However, the gc idle task handler
can end up repeatedly making no progress (e.g., if it can't finalize a sweep)
which causes idle tasks to be repeatedly scheduled in Chrome which do nothing
but wake up Chrome. Fix this by returning Done if we can't make any progress
within an Idle Round.

BUG=chromium:470615
LOG=Y

Review URL: https://codereview.chromium.org/1042483002

Cr-Commit-Position: refs/heads/master@{#27529}

Layout descriptor must be trimmed when corresponding descriptors array is trimmed to stay in sync.

BUG=chromium:470804
LOG=Y

Review URL: https://codereview.chromium.org/1033273005

Cr-Commit-Position: refs/heads/master@{#27528}

Moved verifier specific properties into verifier configs

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1033033002

Cr-Commit-Position: refs/heads/master@{#27527}

Use counter for legacy const.

We only report the usages when full parse is happening, i.e. only when the function that declares a legacy const is compiled. This is an approximation that is easy to implement, but still should reflect the real-world usage.

BUG=v8:3942
LOG=N

Review URL: https://codereview.chromium.org/1041863002

Cr-Commit-Position: refs/heads/master@{#27526}

Revert of [es6] Update test262 tests (patchset #4 id:60001 of https://codereview.chromium.org/1025043002/)

Reason for revert:
Bot failed to include verifyNotEnumerable function for some screwed up reason.

Original issue's description:
> [es6] Update test262 tests
>
> This updates test262 to revision d24fd10 (2015/03/11).
>
> The files moved around in the test repo and a lot of new tests are
> failing.
>
> BUG=None
> LOG=N
> R=rossberg
>
> Committed: https://crrev.com/4f2fb3835feff3663146f12be42b01a226d0065e
> Cr-Commit-Position: refs/heads/master@{#27522}

TBR=rossberg@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=None

Review URL: https://codereview.chromium.org/1047713002

Cr-Commit-Position: refs/heads/master@{#27525}

[turbofan] Fix test of %_MathClz32 intrinsic.

This test will fail once we optimize top-level code, because the
aforementioned intrinsic doesn't perform a NumberToUint32 conversion.

R=titzer@chromium.org
TEST=mjsunit/asm/math-clz32

Review URL: https://codereview.chromium.org/1041173002

Cr-Commit-Position: refs/heads/master@{#27524}

Re-work the 'external snapshot' related build rules.
This prepares for re-landing crrev.com/956373002

This pulls all decision about the snapshot [no|internal|external] into one rule. Previously, this logic was in separate places and not /quite/ the same, which causes build problems.

BUG=

Review URL: https://codereview.chromium.org/1016603004

Cr-Commit-Position: refs/heads/master@{#27523}

[es6] Update test262 tests

This updates test262 to revision d24fd10 (2015/03/11).

The files moved around in the test repo and a lot of new tests are
failing.

BUG=None
LOG=N
R=rossberg

Review URL: https://codereview.chromium.org/1025043002

Cr-Commit-Position: refs/heads/master@{#27522}

[Crankshaft] Don't add an instruction twice for %_StringGetLength.

Review URL: https://codereview.chromium.org/1042843002

Cr-Commit-Position: refs/heads/master@{#27521}

Record various overflow events on the heap - reland of 1029323003

R=hpayer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1040763002

Cr-Commit-Position: refs/heads/master@{#27520}

Fix speedup of typedarray-length loading in the ICs as well as Crankshaft

BUG=

Review URL: https://codereview.chromium.org/1034393002

Cr-Commit-Position: refs/heads/master@{#27519}

fix special index parsing

R=verwaest@chromium.org,dslomov@chromium.org

BUG=

Review URL: https://codereview.chromium.org/1038313004

Cr-Commit-Position: refs/heads/master@{#27518}

Allow more scavenges in idle notification by increasing the new space limit distance.

BUG=chromium:468554
LOG=n

Review URL: https://codereview.chromium.org/1034403002

Cr-Commit-Position: refs/heads/master@{#27517}

Reland "Match fneg for -0.0 - x pattern."

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1040053002

Cr-Commit-Position: refs/heads/master@{#27516}

Relax assert a little to fix flake on regress-3976

R=verwaest@chromium.org
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1045763002

Cr-Commit-Position: refs/heads/master@{#27515}

MIPS64: Improve loading constants for double and integer values.

This CL reduces the size of generated code for snapshot by 1.6%.

TEST=
BUG=

Review URL: https://codereview.chromium.org/1039283002

Cr-Commit-Position: refs/heads/master@{#27514}

Finalize sweeping in idle notification when all pages are swept.

A follow-up CL will implement incremental sweeping during idle time.

BUG=

Review URL: https://codereview.chromium.org/1038283003

Cr-Commit-Position: refs/heads/master@{#27513}

Fix JSON parser Handle leak

R=verwaest@chromium.org
BUG=v8:3976
LOG=y

Review URL: https://codereview.chromium.org/1041483004

Cr-Commit-Position: refs/heads/master@{#27512}

Ensure object literal element boilerplates aren't modified.

A bug allows JSObject literals with elements to have the elements in the
boilerplate modified.

BUG=466993
LOG=N

Review URL: https://codereview.chromium.org/1037273002

Cr-Commit-Position: refs/heads/master@{#27511}

ensure maybe results are checked in v8.h

also some drive-by handlescope fixes in api.cc

R=svenpanne@chromium.org

BUG=

Review URL: https://codereview.chromium.org/1040043002

Cr-Commit-Position: refs/heads/master@{#27510}

[turbofan] Add backend support for float32 operations.

This adds the basics necessary to support float32 operations in TurboFan.
The actual functionality required to detect safe float32 operations will
be added based on this later. Therefore this does not affect production
code except for some cleanup/refactoring.

In detail, this patchset contains the following features:
- Add support for float32 operations to arm, arm64, ia32 and x64
backends.
- Add float32 machine operators.
- Add support for float32 constants to simplified lowering.
- Handle float32 representation for phis in simplified lowering.

In addition, contains the following (related) cleanups:
- Fix/unify naming of backend instructions.
- Use AVX comparisons when available.
- Extend ArchOpcodeField to 9 bits (required for arm64).
- Refactor some code duplication in instruction selectors.

BUG=v8:3589
LOG=n
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/1044793002

Cr-Commit-Position: refs/heads/master@{#27509}

Added %_NewConsString intrinsic.

No compiler support for now (BTW: %_NewString, doesn't have that,
either), inline allocation will come later. Hopefully the last
intrisic to add for a StringAddStub POC...

Review URL: https://codereview.chromium.org/1041723002

Cr-Commit-Position: refs/heads/master@{#27508}

Reland^2 "Filter invalid slots out from the SlotsBuffer after marking."

And reland "Use a slot that is located on a heap page when removing
invalid entries from the SlotsBuffer."

This reverts commits de018fbda32e8ac57d8440e8fe6c3d3386bb9b11 and
d23a9f7a3e509bd405e1e4b0b851e463a4a736c2.

Reason for relanding: looking fine on Canary, let's get these fixes back in.

BUG=chromium:454297,chromium:470801
LOG=y
TBR=ishell@chromium.org

Review URL: https://codereview.chromium.org/1043703003

Cr-Commit-Position: refs/heads/master@{#27507}

PPC: Serializer: move to a subfolder and clean up includes.

Port 019096f82915b68a22807f683b878e42517a3cab

Original commit message:

R=mbrandy@us.ibm.com

BUG=

Review URL: https://codereview.chromium.org/1036273003

Cr-Commit-Position: refs/heads/master@{#27506}

[turbofan][arm64] Use immediates instead of MiscField for stack operations.

This avoid to depend on MiscField to be big enough to hold the offset/size.
This patch also remove the Arm64PokePair which is no longer used.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1039753002

Cr-Commit-Position: refs/heads/master@{#27505}