Add new gn trybot and remove nosnap dbg for being too slow.
It can be used on demand.

BUG=chromium:353487
LOG=n

Review URL: https://codereview.chromium.org/743643002

Cr-Commit-Position: refs/heads/master@{#25419}

Skip one hard fail, and two frequent flakes while we investigate.

BUG=
NOTRY=true

Review URL: https://codereview.chromium.org/728653004

Cr-Commit-Position: refs/heads/master@{#25418}

First step towards replacing PropertyType with two enums: {DATA,ACCESSOR} x {CONST,WRITABLE}.

Review URL: https://codereview.chromium.org/733253004

Cr-Commit-Position: refs/heads/master@{#25417}

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/740673002

Cr-Commit-Position: refs/heads/master@{#25416}

This fixes following exception in Sky on attempt to set a breakpoint
"Unhandled: Uncaught ReferenceError: break_point is not defined"
I think this happens in Sky but not in Chrome because Sky scripts are executed in strict mode.

BUG=None
LOG=N
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/741683002

Cr-Commit-Position: refs/heads/master@{#25415}

port 47f55bae (r25397)

original commit message:

  Re-land r25392 Use a stub in crankshaft for grow store arrays.

  Code was vulnerable to different evaluation order in Clang.

BUG=

Review URL: https://codereview.chromium.org/739823002

Cr-Commit-Position: refs/heads/master@{#25414}

TBR=bmeurer@chromium.org

BUG=

Review URL: https://codereview.chromium.org/743603003

Cr-Commit-Position: refs/heads/master@{#25413}

According to ES5 9.5 and 9.6, NaN, -inf, +inf, -0 and 0 all truncate to
zero for both ToInt32 and ToUint32, so we can be a lot smarter in the
typer, loosing less information upon truncation (i.e. x | 0 and x >>> 0).

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/739743003

Cr-Commit-Position: refs/heads/master@{#25412}

Revert "Forward declaration for Isolate / Platform in libplatform.h." and "Fixes d8 on windows following.".

This reverts commit 0f57ce8f.
and 3245b8cb for breaking Chromium
compile.

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/743533003

Cr-Commit-Position: refs/heads/master@{#25411}

BUG=

Review URL: https://codereview.chromium.org/731573004

Cr-Commit-Position: refs/heads/master@{#25410}

Broke by https://codereview.chromium.org/740493002/

BUG=
NOTRY=true
NOTREECHECKS=true

Review URL: https://codereview.chromium.org/734853004

Cr-Commit-Position: refs/heads/master@{#25409}

Reduces dependencies on #include files, making it easier for other
build systems to include this library.

BUG=

Review URL: https://codereview.chromium.org/740493002

Cr-Commit-Position: refs/heads/master@{#25408}

This tests that the extends expression is treated as strict at
runtime and not just at parse time.

BUG=v8:3330
LOG=Y
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/729323003

Cr-Commit-Position: refs/heads/master@{#25407}

R=rossberg@chromium.org
BUG=v8:2198
LOG=N

Review URL: https://codereview.chromium.org/713413003

Cr-Commit-Position: refs/heads/master@{#25406}

Without this change, `make android_arm.release.check` fails since the
unittests binary does not exist on the device.

BUG=v8:3695
LOG=

Review URL: https://codereview.chromium.org/722373003

Cr-Commit-Position: refs/heads/master@{#25405}

Port 47f55bae

Original commit message:
Code was vulnerable to different evaluation order in Clang.

BUG=
R=paul.lind@imgtec.com

Review URL: https://codereview.chromium.org/735783002

Patch from Balazs Kilvady <balazs.kilvady@imgtec.com>.

Cr-Commit-Position: refs/heads/master@{#25404}

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/742433002

Cr-Commit-Position: refs/heads/master@{#25403}

R=dcarney@chromium.org
BUG=chromium:420240
LOG=Y
API=v8::String::Concat may return empty handle on overflow.

Review URL: https://codereview.chromium.org/735763002

Cr-Commit-Position: refs/heads/master@{#25402}

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/735583003

Cr-Commit-Position: refs/heads/master@{#25401}

BUG=chromium:432493
LOG=Y

Review URL: https://codereview.chromium.org/728103008

Cr-Commit-Position: refs/heads/master@{#25400}

R=jarin@chromium.org
TEST=cctest/test-scheduler/LoopedFloatingDiamond3

Review URL: https://codereview.chromium.org/726953002

Cr-Commit-Position: refs/heads/master@{#25399}

BUG=chromium:374740
LOG=n
TEST=tools/try_perf.py sunspider octane
R=phajdan.jr@chromium.org

Review URL: https://codereview.chromium.org/734403002

Cr-Commit-Position: refs/heads/master@{#25398}

Code was vulnerable to different evaluation order in Clang.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/726693004

Cr-Commit-Position: refs/heads/master@{#25397}

This avoids UBSan warnings about unaligned memory access.

BUG=

Review URL: https://codereview.chromium.org/734873002

Cr-Commit-Position: refs/heads/master@{#25396}

1) Missing <stdio.h> while using fopen, fclose, fseek etc
2) platform-linux.cc includes <sys/types.h> wtice

BUG=v8:3691

Review URL: https://codereview.chromium.org/716123003

Cr-Commit-Position: refs/heads/master@{#25395}

The clearing mechanism relies on comparing the cached handler with the installed handler. If we try to preserve monomorphism by pretending that the IC was in uninitialized state, then it will go premonomorphic first, which means on the next miss there's no installed handler available to compare against. Instead, pretend it was premonomorphic, so the comparison will happen right away, will fail as it should, and the cached handler will be cleared.

Thanks to Weiliang for starting the investigation that led to this.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/730383002

Cr-Commit-Position: refs/heads/master@{#25394}

This reverts commit d40204f8.

TBR=danno@chromium.org

Review URL: https://codereview.chromium.org/735653003

Cr-Commit-Position: refs/heads/master@{#25393}

We were deopting without learning anything.

BUG=v8:3417
LOG=N
R=danno@chromium.org

Review URL: https://codereview.chromium.org/368263003

Cr-Commit-Position: refs/heads/master@{#25392}

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/736543003

Cr-Commit-Position: refs/heads/master@{#25391}

This essentially performs the following transformation

  JSToNumber(phi(x1,...,xn,control):primitive)
    => phi(JSToNumber(x1),...,JSToNumber(xn),control):number

which is similar to what we already do for JSToBoolean.

TEST=mjsunit/asm
R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/732463003

Cr-Commit-Position: refs/heads/master@{#25390}

BUG=chromium:432468
R=yangguo@chromium.org, adamk@chromium.org, arv@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/734163002

Cr-Commit-Position: refs/heads/master@{#25389}

TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/735623002

Cr-Commit-Position: refs/heads/master@{#25388}

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/726423002

Cr-Commit-Position: refs/heads/master@{#25387}

TEST=mjsunit/asm
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/728103007

Cr-Commit-Position: refs/heads/master@{#25386}

Also add some debug code to verify correct zero extension of 32-bit
moves.

TEST=mjsunit/asm
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/736623002

Cr-Commit-Position: refs/heads/master@{#25385}

R=rossberg@chromium.org
BUG=v8:3076
LOG=n

Review URL: https://codereview.chromium.org/733483003

Cr-Commit-Position: refs/heads/master@{#25384}

We add a new ScopeType, ScopeType.Script. The scope with
ScopeType.Script is always present in the scope chain (ScopeIterator
fakes it if neededi - i.e. if ScriptContext for a script has not been
allocated since that script has no lexical declarations).
ScriptScope reflects ScriptContextTable.

R=yurys@chromium.org,yangguo@chromium.org
BUG=v8:3690
LOG=N

Review URL: https://codereview.chromium.org/726643002

Cr-Commit-Position: refs/heads/master@{#25383}

R=bmeurer@chromium.org

BUG=

Review URL: https://codereview.chromium.org/727373002

Cr-Commit-Position: refs/heads/master@{#25382}

BUG=

Review URL: https://codereview.chromium.org/714413004

Cr-Commit-Position: refs/heads/master@{#25381}

R=yangguo@chromium.org, vsevik
LOG=Y

Committed: https://code.google.com/p/v8/source/detail?r=d5f5d38f73f43eba9658d91ffbe511af8c340d78

Review URL: https://codereview.chromium.org/710273002

Cr-Commit-Position: refs/heads/master@{#25380}