R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1154463004

Cr-Commit-Position: refs/heads/master@{#28570}

Revert of Revert of Pass GC flags to incremental marker and start incremental marking with (patchset #1 id:1 of https://codereview.chromium.org/1151143002/)

Reason for revert:
Wasn't the reason...

Original issue's description:
> Revert of Pass GC flags to incremental marker and start incremental marking with (patchset #3 id:40001 of https://codereview.chromium.org/1156463002/)
>
> Reason for revert:
> [Sheriff] Speculative revert because chromebook is really misbehaving:
> http://build.chromium.org/p/client.v8/builders/V8%20Arm/builds/2109
>
> I also triggered a retry with the failing build to be sure. If the revert doesn't help or the bot had a scary hiccup, this can reland.
>
> Original issue's description:
> > Pass GC flags to incremental marker and start incremental marking with
> > reduce memory footprint in idle notification.
> >
> > BUG=
> >
> > Committed: https://crrev.com/4656308147b12405037678b1ab192fb4f2437bbc
> > Cr-Commit-Position: refs/heads/master@{#28567}
>
> TBR=hpayer@chromium.org,ulan@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=
>
> Committed: https://crrev.com/634c58a4f10b346a98208ec34d169e1bdb04e1b7
> Cr-Commit-Position: refs/heads/master@{#28568}

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

Review URL: https://codereview.chromium.org/1157613002

Cr-Commit-Position: refs/heads/master@{#28569}

Revert of Pass GC flags to incremental marker and start incremental marking with (patchset #3 id:40001 of https://codereview.chromium.org/1156463002/)

Reason for revert:
[Sheriff] Speculative revert because chromebook is really misbehaving:
http://build.chromium.org/p/client.v8/builders/V8%20Arm/builds/2109

I also triggered a retry with the failing build to be sure. If the revert doesn't help or the bot had a scary hiccup, this can reland.

Original issue's description:
> Pass GC flags to incremental marker and start incremental marking with
> reduce memory footprint in idle notification.
>
> BUG=
>
> Committed: https://crrev.com/4656308147b12405037678b1ab192fb4f2437bbc
> Cr-Commit-Position: refs/heads/master@{#28567}

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

Review URL: https://codereview.chromium.org/1151143002

Cr-Commit-Position: refs/heads/master@{#28568}

reduce memory footprint in idle notification.

BUG=

Review URL: https://codereview.chromium.org/1156463002

Cr-Commit-Position: refs/heads/master@{#28567}

The Heap::Available method adds up the available size from only 4 of
the spaces. This CL fixes the method to return total of all spaces.

BUG=481504
LOG=N

Review URL: https://codereview.chromium.org/1141693003

Cr-Commit-Position: refs/heads/master@{#28566}

Also support patterns in ``for (var p in/of ...)``

This CL extends the rewriting we used to do for ``for (let p in/of...)`` to
``for (var p in/of ...)``. For all for..in/of loop declaring variable,
we rewrite
   for (var/let/const pattern in/of e) b
into
   for (x' in/of e) { var/let/const pattern = e; b }

This adds a small complication for debugger: for a statement
   for (var v in/of e) ...
we used to have
   var v;
   for (v in/of e) ...
and there was a separate breakpoint on ``var v`` line.
This breakpoint is actually useless since it is immediately followed by
a breakpoint on evaluation of ``e``, so this CL removes that breakpoint
location.

Similiraly, for let, it used to be that
  for (let v in/of e) ...
became
  for (x' in/of e) { let v; v  = x'; ... }
``let v``generetaed a useless breakpoint (with the location at the
loop's head. This CL removes that breakpoint as well.

R=arv@chromium.org,rossberg@chromium.org
BUG=v8:811
LOG=N

Review URL: https://codereview.chromium.org/1149043005

Cr-Commit-Position: refs/heads/master@{#28565}

BUG=v8:4137
LOG=n

Review URL: https://codereview.chromium.org/1147863002

Cr-Commit-Position: refs/heads/master@{#28564}

This macro is used for defining static data members with
STATIC_CONST_MEMBER_DEFINITION. Clang-cl mimics MSVC's
behaviour here, so it also needs __declspec(selectany).

This change was prompted by Clang r237787 which changed
a bug where Clang would previously not emit symbols for
some static data members.

BUG=82385
LOG=N

Review URL: https://codereview.chromium.org/1145213004

Cr-Commit-Position: refs/heads/master@{#28563}

Original issue's description:
> Avoid excessive GCs in small heaps.
>
> Small heaps and small heap growing factor can lead to excessive GCs in corner cases.
>
> Consider function F(old_gen_size, factor) that returns the number of bytes that
> have to be allocated in the old generation to start incremental marking.
>
> F(4MB, 1.1) = 4MB (because of kMinimumOldGenerationAllocationLimit)
> F(6MB, 1.1) = 2MB (because of kMinimumOldGenerationAllocationLimit)
> F(8MB, 1.1) = 800KB
>
> Funtion F should be monotonic in old_gen_size, but it currently has a minimum
> at kMinimumOldGenerationAllocationLimit.
>
> This CL makes F monotonic.
>
> BUG=
>
> Committed: https://crrev.com/22b1da99732b4db0754bf267ec470a2831216fb2
> Cr-Commit-Position: refs/heads/master@{#28549}

TBR=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1148953005

Cr-Commit-Position: refs/heads/master@{#28562}

BUG=chromium:425187
LOG=n
TBR=svenpanne@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1148333004

Cr-Commit-Position: refs/heads/master@{#28561}

Port 9502e91a

Original commit message:
This allows you to put iterables into your array literals
and the will get spread into the array.

  let x = [0, ...range(1, 3)];  // [0, 1, 2]

This is done by treating the array literal up to the first
spread element as usual, including using a boiler plate
array, and then appending the remaining expressions and rest
expressions.

R=arv@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1149873005

Cr-Commit-Position: refs/heads/master@{#28560}

BUG=v8:4137
LOG=n

Review URL: https://codereview.chromium.org/1155503003

Cr-Commit-Position: refs/heads/master@{#28559}

Revert of Avoid excessive GCs in small heaps. (patchset #1 id:1 of https://codereview.chromium.org/1144223002/)

Reason for revert:
Regressed Sunspider.

Original issue's description:
> Avoid excessive GCs in small heaps.
>
> Small heaps and small heap growing factor can lead to excessive GCs in corner cases.
>
> Consider function F(old_gen_size, factor) that returns the number of bytes that
> have to be allocated in the old generation to start incremental marking.
>
> F(4MB, 1.1) = 4MB (because of kMinimumOldGenerationAllocationLimit)
> F(6MB, 1.1) = 2MB (because of kMinimumOldGenerationAllocationLimit)
> F(8MB, 1.1) = 800KB
>
> Funtion F should be monotonic in old_gen_size, but it currently has a minimum
> at kMinimumOldGenerationAllocationLimit.
>
> This CL makes F monotonic.
>
> BUG=
>
> Committed: https://crrev.com/22b1da99732b4db0754bf267ec470a2831216fb2
> Cr-Commit-Position: refs/heads/master@{#28549}

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

Review URL: https://codereview.chromium.org/1152533002

Cr-Commit-Position: refs/heads/master@{#28558}

TBR=dslomov@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1147323002

Cr-Commit-Position: refs/heads/master@{#28557}

BUG=v8:4137
LOG=n

Review URL: https://codereview.chromium.org/1148583002

Cr-Commit-Position: refs/heads/master@{#28556}

Currently the stub simply calls out to the runtime, this will be
improved in a later CLs. The current state at least avoids bit-rot and
later merging horror.

Fixes frame construction logic for stubs, too, and contains quite a few
tiny cleanups in stub-land.

Review URL: https://codereview.chromium.org/1150673002

Cr-Commit-Position: refs/heads/master@{#28555}

Revert of Remove obsolete JSFunction::IsOptimizable predicate. (patchset #1 id:1 of https://codereview.chromium.org/1150683002/)

Reason for revert:
Causes assertions to fire when serializing optimized code.

Original issue's description:
> Remove obsolete JSFunction::IsOptimizable predicate.
>
> This just delegates to SharedFunctionInfo::optimization_disabled and
> was primarily used for assertions. Removing it due to misleading name
> because already optimized functions reported being "non-optimizable".
>
> R=titzer@chromium.org
>
> Committed: https://crrev.com/181d7b85977eb752b19e1de902093783e31330ef
> Cr-Commit-Position: refs/heads/master@{#28551}

TBR=titzer@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1148973005

Cr-Commit-Position: refs/heads/master@{#28554}

without the % we can't override the value which makes the Makefile thing
not work

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

Review URL: https://codereview.chromium.org/1147273002

Cr-Commit-Position: refs/heads/master@{#28553}

Reduce new space size during idle times only in memory mode after scavenge, full gc, or finalized incremental full gc.

BUG=

Review URL: https://codereview.chromium.org/1143973003

Cr-Commit-Position: refs/heads/master@{#28552}

This just delegates to SharedFunctionInfo::optimization_disabled and
was primarily used for assertions. Removing it due to misleading name
because already optimized functions reported being "non-optimizable".

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1150683002

Cr-Commit-Position: refs/heads/master@{#28551}

The inliner previously assumed that there will only be returns reaching
the end node, but that's not true.  This refactoring will make it
possible to also hook up Deoptimize, Throw and Terminate nodes reaching
end properly.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1146393002

Cr-Commit-Position: refs/heads/master@{#28550}

Small heaps and small heap growing factor can lead to excessive GCs in corner cases.

Consider function F(old_gen_size, factor) that returns the number of bytes that
have to be allocated in the old generation to start incremental marking.

F(4MB, 1.1) = 4MB (because of kMinimumOldGenerationAllocationLimit)
F(6MB, 1.1) = 2MB (because of kMinimumOldGenerationAllocationLimit)
F(8MB, 1.1) = 800KB

Funtion F should be monotonic in old_gen_size, but it currently has a minimum
at kMinimumOldGenerationAllocationLimit.

This CL makes F monotonic.

BUG=

Review URL: https://codereview.chromium.org/1144223002

Cr-Commit-Position: refs/heads/master@{#28549}

The dashboard displays everything on one scale.
This isn't very useful.
Dropping these two fields as they're not really that
interesting anyway.

BUG=https://code.google.com/p/v8/issues/detail?id=4124
LOG=N
TEST=None
NOTRY=true
TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1144263002

Cr-Commit-Position: refs/heads/master@{#28548}

R=arv@chromium.org,rossberg@chromium.org
BUG=v8:811
LOG=N

Review URL: https://codereview.chromium.org/1152503002

Cr-Commit-Position: refs/heads/master@{#28547}

BUG=

Review URL: https://codereview.chromium.org/1144883002

Cr-Commit-Position: refs/heads/master@{#28546}

R=danno@chromium.org
BUG=v8:4131
LOG=N

Review URL: https://codereview.chromium.org/1148653005

Cr-Commit-Position: refs/heads/master@{#28545}

This allows enabling TurboFan on a certain subset of language features
in the AstNumberingVisitor. The heuristics of when to optimize remain
unchanged, only the choice of which optimizing compiler to use changes.

R=bmeurer@chromium.org
BUG=v8:4131
LOG=N

Review URL: https://codereview.chromium.org/1155503002

Cr-Commit-Position: refs/heads/master@{#28544}

Replace the --turbo-deoptimization flag with --turbo-asm-deoptimization
and enable deoptimization for non-asm.js TurboFan code unconditionally.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1153483002

Cr-Commit-Position: refs/heads/master@{#28543}

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

Review URL: https://codereview.chromium.org/1148063003

Cr-Commit-Position: refs/heads/master@{#28542}

Removes EnsureDouble* methods.
Adds a RequiredAlignment method.
Changes call sites.

LOG=N
BUG=v8:4124

Review URL: https://codereview.chromium.org/1150953002

Cr-Commit-Position: refs/heads/master@{#28541}

BUG=

Review URL: https://codereview.chromium.org/1149563004

Cr-Commit-Position: refs/heads/master@{#28540}

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/1145183004

Cr-Commit-Position: refs/heads/master@{#28539}

This should help to keep syntax errors from creeping into v8.h

Also, I'll remove usages of to-be-deprecated APIs and turn this flag on
for standalone builds

BUG=4134
R=vogelheim@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1149633003

Cr-Commit-Position: refs/heads/master@{#28538}

Sample new space allocation throughput at scavenge and at idle notificatioon.

This will allow better estimation of mutator idleness for switching between
latency and memory modes in idle notification handler.

BUG=chromium:486005
LOG=NO
TEST=cctest/test-heap/NewSpaceAllocationThroughput

Review URL: https://codereview.chromium.org/1125193005

Cr-Commit-Position: refs/heads/master@{#28537}

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1148133002

Cr-Commit-Position: refs/heads/master@{#28536}

The --turbo flag should reflect our TurboFan staging configuration, and
for now that does not include the JSTypeFeedbackSpecializer.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1150923005

Cr-Commit-Position: refs/heads/master@{#28535}

This allows you to put iterables into your array literals
and the will get spread into the array.

  let x = [0, ...range(1, 3)];  // [0, 1, 2]

This is done by treating the array literal up to the first
spread element as usual, including using a boiler plate
array, and then appending the remaining expressions and rest
expressions.

BUG=v8:3018
LOG=N

Review URL: https://codereview.chromium.org/1125183008

Cr-Commit-Position: refs/heads/master@{#28534}

Also changed string.js and math.js to adapt this change.

R=jkummerow@chromium.org

Committed: https://crrev.com/e25058b0b7b9831162579564fc8935d568c1ecdd
Cr-Commit-Position: refs/heads/master@{#28521}

Review URL: https://codereview.chromium.org/1143993003

Cr-Commit-Position: refs/heads/master@{#28533}

port 09aaf003 (r28516).

original commit message:

    Also removed ornamentation like "VectorRaw" from stub names.

BUG=

Review URL: https://codereview.chromium.org/1152473003

Cr-Commit-Position: refs/heads/master@{#28532}

port 78f0452d (r28491)

original commit message:

    Also check whether the arguments count is smaller than the number of
    required parameters which is the same as the SharedFunctionInfo length.

BUG=

Review URL: https://codereview.chromium.org/1146103003

Cr-Commit-Position: refs/heads/master@{#28531}