The least significant bit of the input value may affect the result of
the conversion through rounding. We OR the least significant with the
second least significant bit to preserve it over the SHR instruction.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1435203003

Cr-Commit-Position: refs/heads/master@{#31969}

BUG=chromium:554946
LOG=y
R=jkummerow@chromium.org, jochen@chromium.org

Review URL: https://codereview.chromium.org/1435083003

Cr-Commit-Position: refs/heads/master@{#31968}

This test, as written, is invalid on platforms which use function
descriptors.

See https://codereview.chromium.org/1377423002/ for background.

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

Review URL: https://codereview.chromium.org/1438803002

Cr-Commit-Position: refs/heads/master@{#31967}

Because the Scope will be optimized away by the call to
FinalizeBlockScope in the case where there are no lexical
declarations in the block, this should have no effect on
anything downstream from the Parser, and simply removes
duplicate parsing code.

Due to the change from ParseStatement to ParseStatementListItem,
this will result in slightly different error messages for
lexical declarations in sloppy mode (until those are shipped).

R=littledan@chromium.org, rossberg@chromium.org
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng;tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1433743005

Cr-Commit-Position: refs/heads/master@{#31966}

BUG=v8:2160
LOG=y

Review URL: https://codereview.chromium.org/1438753002

Cr-Commit-Position: refs/heads/master@{#31965}

Instead of basing matches off of whitespace, walk the inheritance chain and include any classes that inherit from Object.

R=machenbach@chromium.org,jkummerow@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1435643002

Cr-Commit-Position: refs/heads/master@{#31964}

Remove hard-coded assumption of large object size threshold.

This test fails on PPC in version 4.7 where the threshold is derived
directly from the allocator's pagesize.

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

Review URL: https://codereview.chromium.org/1440723002

Cr-Commit-Position: refs/heads/master@{#31963}

BUG=v8:1543
LOG=n

Review URL: https://codereview.chromium.org/1438233002

Cr-Commit-Position: refs/heads/master@{#31962}

BUG=
R=machenbach

Review URL: https://codereview.chromium.org/1439763002

Cr-Commit-Position: refs/heads/master@{#31961}

Now JSIntrinsicLowering can also lower %_IsSpecObject intrinsics to a
diamond.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1436943005

Cr-Commit-Position: refs/heads/master@{#31960}

This CL fixes several sources of non-predictability by making Platform::MonotonicallyIncreasingTime() the only bottleneck for all time-querying functions and providing PredictablePlatform implementation.

Review URL: https://codereview.chromium.org/1415383004

Cr-Commit-Position: refs/heads/master@{#31959}

Only inline one candidate per iteration to make sure we really inline
the stuff that is called most often.

R=mstarzinger@chromium.org
BUG=v8:4493, v8:4544
LOG=n

Review URL: https://codereview.chromium.org/1439773003

Cr-Commit-Position: refs/heads/master@{#31958}

This adds initial support for fast inline allocations of JSObject
instances. It currently has exactly the same limitations as Crankshaft.

R=mstarzinger@chromium.org
BUG=v8:4544
LOG=n

Review URL: https://codereview.chromium.org/1441573004

Cr-Commit-Position: refs/heads/master@{#31957}

R=jkummerow@chromium.org
BUG=chromium:523919
LOG=N

Review URL: https://codereview.chromium.org/1440983002

Cr-Commit-Position: refs/heads/master@{#31956}

This passes both, the actual constructor and the original constructor,
to nodes having the {JSCreate} operator. This is required for allocating
properly subclassed implicit receiver objects.

R=verwaest@chromium.org
BUG=v8:4544
LOG=n

Review URL: https://codereview.chromium.org/1434873004

Cr-Commit-Position: refs/heads/master@{#31955}

This implements a first version of support for constructor call inlining
in the inlining machinery. For now we can only inline calls where the
actual constructor and the original constructor coincide (i.e. no super
constructor calls). Note that the target of a super constructor call is
loaded with a runtime call, so there is no way for it to be constant
promoted at the moment.

R=bmeurer@chromium.org
BUG=v8:4544
LOG=n

Review URL: https://codereview.chromium.org/1435873002

Cr-Commit-Position: refs/heads/master@{#31954}

With subclassing and @@toStringTag, %_ClassOf is not necessarily what
you want for ES6 anymore, so better avoid relying on %_ClassOf in our
builtins.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1439003002

Cr-Commit-Position: refs/heads/master@{#31953}

Rolling v8/tools/clang to 0b258f75323161e854038f30334e97ab6aa58eab

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Review URL: https://codereview.chromium.org/1440623005

Cr-Commit-Position: refs/heads/master@{#31952}

The ~ operator is de-sugared into true^x, which was
being improperly handled.

Adding tests of most bitwise operators and several error cases.

BUG= https://code.google.com/p/v8/issues/detail?id=4203
TEST=test-asm-validator
R=titzer@chromium.org,aseemgarg@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1432423003

Cr-Commit-Position: refs/heads/master@{#31951}

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1440813002

Cr-Commit-Position: refs/heads/master@{#31950}

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1440733002

Cr-Commit-Position: refs/heads/master@{#31949}

Presently the inline allocation step is a static value defined to be the minimum
of the step sizes over all the observers. The step occur every (approx.) step
byte. This is unfair to observers whose steps are not evenly divisible by the
min step size. For example, consider two observers with steps sizes of 512 and
576 bytes. Across 16kb allocated, you would expect the first observer to be hit
approximately 32 times, and the second observer to be hit approximately 28
times.

In reality, the observers get notified 30 and 15 times respectively. The reason
is that each step is 512 bytes, and since 576 is not evenly divisible by 512,
it gets notified much less frequently.

This CL fixes the problem by making the next step size be the minimum (over all
observers) of the remaining bytes to get to the step, making the steps fair.

BUG=
R=hpayer@chromium.org,ulan@chromium.org

Review URL: https://codereview.chromium.org/1427973006

Cr-Commit-Position: refs/heads/master@{#31948}

I have discovered need in those values when writing:

https://github.com/indutny/llnode

BUG=

Review URL: https://codereview.chromium.org/1436473002

Cr-Commit-Position: refs/heads/master@{#31947}

I don't see obvious implementations for mips64 and ppc64, so I would need
help for these two platforms.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1436943002

Cr-Commit-Position: refs/heads/master@{#31946}

Check whether a trampoline pool should be emitted after unblocking.
Otherwise, back-to-back sequences which block the trampoline pool can
cause it to be out of reach.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1433343002

Cr-Commit-Position: refs/heads/master@{#31945}

R=mstarzinger@chromium.org
BUG=v8:4493
LOG=n

Review URL: https://codereview.chromium.org/1432223002

Cr-Commit-Position: refs/heads/master@{#31944}

Extend the element access specialization to also allow non-JSArray fast
packed elements, which now includes unaliased sloppy and strict
arguments.

R=jarin@chromium.org
BUG=v8:4470
LOG=n

Review URL: https://codereview.chromium.org/1433193003

Cr-Commit-Position: refs/heads/master@{#31943}

Change sloppy and strict arguments objects to FAST_ELEMENTS for their
backing stores, which will allow us to optimize them easier. Also fixes
a bug in the elements accessors that was triggered by this change.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/1433133003

Cr-Commit-Position: refs/heads/master@{#31942}

BUG=

Review URL: https://codereview.chromium.org/1436813002

Cr-Commit-Position: refs/heads/master@{#31941}

Review URL: https://codereview.chromium.org/1439583002

Cr-Commit-Position: refs/heads/master@{#31940}

This is for disabling 9.2.2. for release on arm64
(approximating a bit).

BUG=v8:4280
LOG=N
NOTRY=True
TBR=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/1432183002

Cr-Commit-Position: refs/heads/master@{#31939}

Support lowering of Function.prototype.call in the JSBuiltinReducer,
which is actually straightforward because of the way we represent JS
calls in TurboFan.  Currently we cannot inline the actual target yet,
since inlining still runs before typed lowering, but that will be
possible as well soon(ish).

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1439533002

Cr-Commit-Position: refs/heads/master@{#31938}

Use 64-bit add for address.

TEST=mjsunit/sparse-array.js, others.
BUG=

Review URL: https://codereview.chromium.org/1435793002

Cr-Commit-Position: refs/heads/master@{#31937}

Rolling v8/buildtools to 4a95614772d9bcbd8bc197e1d9bd034e088fc740

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Review URL: https://codereview.chromium.org/1439503002

Cr-Commit-Position: refs/heads/master@{#31936}

   port 1e277012 (r31914)

   original commit message:
   Avoid write barriers when storing values in the root set, and use
   cheaper write barriers for storing maps or tagged pointers. Also
   improve the generated code for write barriers, utilizing the out
   of line code mechanism that is available to TurboFan backends,
   which moves the unlikely case out of the hot path.

BUG=

Review URL: https://codereview.chromium.org/1435743003

Cr-Commit-Position: refs/heads/master@{#31935}

X87: Support fast-path allocation for subclass constructors with correctly initialized initial maps.

  port b9d25d86 (r31913)

  original commit message:

BUG=

Review URL: https://codereview.chromium.org/1434853002

Cr-Commit-Position: refs/heads/master@{#31934}

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1409073016

Cr-Commit-Position: refs/heads/master@{#31933}

Changing this value is not guaranteed to work yet, but it needs to be
an arg in order to experiment with it.

Review URL: https://codereview.chromium.org/1427343003

Cr-Commit-Position: refs/heads/master@{#31932}

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1413833013

Cr-Commit-Position: refs/heads/master@{#31931}

This CL is in preparation for the API change introduced in http://crrev.com/1407313004.

BUG=

Review URL: https://codereview.chromium.org/1434693008

Cr-Commit-Position: refs/heads/master@{#31930}