Adds the marking logic to mark the young generation.

BUG=chromium:651354

Review-Url: https://codereview.chromium.org/2498583002
Cr-Commit-Position: refs/heads/master@{#41104}

The test is too fragile.

NOTREECHECKS=true

Review-Url: https://codereview.chromium.org/2510403002
Cr-Commit-Position: refs/heads/master@{#41103}

This makes wasm frames show up nicely in stack traces generated e.g. by
Isolate::PrintStack() and Isolate::PrintCurrentStackTrace().
With this CL, we print the script name, function index, function name,
pc and source position.

R=titzer@chromium.org, ahaas@chromium.org

Review-Url: https://codereview.chromium.org/2509323002
Cr-Commit-Position: refs/heads/master@{#41102}

Add bytecode for defining data properties, which initially just calls the runtime function.

BUG=v8:5624

Review-Url: https://codereview.chromium.org/2510743002
Cr-Commit-Position: refs/heads/master@{#41101}

Revert of [interpreter] Properly collect rhs feedback for comparisons with oddballs. (patchset #1 id:1 of https://codereview.chromium.org/2513903002/ )

Reason for revert:
Seems to break layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/11452

Original issue's description:
> [interpreter] Properly collect rhs feedback for comparisons with oddballs.
>
> Ignition skipped collecting NumberOrOddball feedback if the right hand
> side of a relational comparison is undefined, thus leading to a
> deoptimization loop, because it reported Number feedback to TurboFan.
>
> This was caught on 3d-raytrace test of SunSpider.
>
> R=rmcilroy@chromium.org
>
> Committed: https://crrev.com/d240ffec32ae034e50c006f7d5715171b32bbbc4
> Cr-Commit-Position: refs/heads/master@{#41094}

TBR=rmcilroy@chromium.org,bmeurer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/2511243004
Cr-Commit-Position: refs/heads/master@{#41100}

Instead of having functions for 0 to 5 arguments, we now have a
variadic template, allowing for an arbitrary number of arguments.
I also refactored the internal FmtElm class to only include the type
field if building for debug, because it is only used in this setting.

R=titzer@chromium.org, ahaas@chromium.org

Review-Url: https://codereview.chromium.org/2507093004
Cr-Commit-Position: refs/heads/master@{#41099}

In component build, fuzzer did not link with icu libraries, causing
errors. By adding icu libraries to dependencies fuzzer links correctly.

BUG=
TEST=fuzzer/*

Review-Url: https://codereview.chromium.org/2510063002
Cr-Commit-Position: refs/heads/master@{#41098}

We never increment live bytes concurrent to the sweeper.

BUG=

Review-Url: https://codereview.chromium.org/2504193002
Cr-Commit-Position: refs/heads/master@{#41097}

There's a typo in a couple of lithium backends, where we assume that the
array protector on the Isolate is a Cell instead of a PropertyCell. This
could lead to unnecessary deoptimizations.

R=yangguo@chromium.org

Review-Url: https://codereview.chromium.org/2512943002
Cr-Commit-Position: refs/heads/master@{#41096}

BUG=v8:5580

Review-Url: https://codereview.chromium.org/2460873003
Cr-Commit-Position: refs/heads/master@{#41095}

Ignition skipped collecting NumberOrOddball feedback if the right hand
side of a relational comparison is undefined, thus leading to a
deoptimization loop, because it reported Number feedback to TurboFan.

This was caught on 3d-raytrace test of SunSpider.

R=rmcilroy@chromium.org

Review-Url: https://codereview.chromium.org/2513903002
Cr-Commit-Position: refs/heads/master@{#41094}

This fixes the bogus implementation of the function in question and adds
test coverage for the deserialization of the corresponding flags from
the serialized scope info. Note that the tests so far only cover cases
where the module and the function contain context-allocated variables.

R=verwaest@chromium.org
TEST=cctest/test-parsing/AsmFunctionFlag
BUG=v8:5653

Review-Url: https://codereview.chromium.org/2507063004
Cr-Commit-Position: refs/heads/master@{#41093}

This is the TurboFan counterpart of http://crrev.com/2504263004, but it
is a bit more involved, since in TurboFan we always inline the appropriate
call to the @@hasInstance handler, and by that we can optimize a lot more
patterns of instanceof than Crankshaft, and even yield fast instanceof
for custom @@hasInstance handlers (which we can now properly inline as
well).

Also we now properly optimize Function.prototype[@@hasInstance], even if
the right hand side of an instanceof doesn't have the Function.prototype
as its direct prototype.

For the baseline case, we still rely on the global protector cell, but
we can address that in a follow-up as well, and make it more robust in
general.

TEST=mjsunit/compiler/instanceof
BUG=v8:5640
R=yangguo@chromium.org

Review-Url: https://codereview.chromium.org/2511223003
Cr-Commit-Position: refs/heads/master@{#41092}

See https://github.com/mathiasbynens/es-regexp-unicode-property-escapes

Changes:
- only allow General Category, binary properties, Script, and Script_Extensions.
- implement Script_Extensions.

R=littledan@chromium.org
BUG=v8:4743

Review-Url: https://codereview.chromium.org/2502933002
Cr-Commit-Position: refs/heads/master@{#41091}

Reland of Update usage of linux blink try bot to use linux_trusty_blink_rel. (patchset #1 id:1 of https://codereview.chromium.org/2507853002/ )

Reason for revert:
linux_trusty_blink_rel is now working, with more capacity

Original issue's description:
> Revert of Update usage of linux blink try bot to use linux_trusty_blink_rel. (patchset #1 id:1 of https://codereview.chromium.org/2475563002/ )
>
> Reason for revert:
> Submitting this before more capacity was added to linux_trusty_blink_rel caused that builder to get too busy (http://crbug.com/665246); should be able to reland after http://crbug.com/665917 is fixed.
>
> Original issue's description:
> > Update usage of linux blink try bot to use linux_trusty_blink_rel.
> >
> > Reason: We're planning to drop support for Linux Precise for layout tests.
> >
> > BUG=chromium:660580
> > NOTRY=true
>
> TBR=machenbach@chromium.org
> # Not skipping CQ checks because original CL landed more than 1 days ago.
> BUG=chromium:660580
> NOTRY=true

TBR=machenbach@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:660580

Review-Url: https://codereview.chromium.org/2505403002
Cr-Commit-Position: refs/heads/master@{#41090}

With this change, WebAssembly.Memory objects have backing stores allocated as an
8GB region where everything beyond the size of the Wasm heap is inaccessible.

GrowMemory is now implemented by changing the protection on the guard regions to
make the new portions of the heap accessible.

Guard pages are not enabled by default, but this change adds a flag and a test
variant to make sure we get test coverage on them.

BUG= https://bugs.chromium.org/p/v8/issues/detail?id=5277

Review-Url: https://codereview.chromium.org/2396433008
Cr-Commit-Position: refs/heads/master@{#41089}

BUG=

Review-Url: https://codereview.chromium.org/2507293003
Cr-Commit-Position: refs/heads/master@{#41088}

After moving inspector from blink to V8, inspector can use DebugInterface to compile and mark internal scripts.

BUG=v8:5530
R=yangguo@chromium.org

Review-Url: https://codereview.chromium.org/2502173002
Cr-Commit-Position: refs/heads/master@{#41087}

Review-Url: https://codereview.chromium.org/2509293002
Cr-Commit-Position: refs/heads/master@{#41086}

With the new wasm object types, the GetCompiledModule and GetWasmBytes
functions are not needed any more. The same functions are already
public on the wasm objects.
In order to use them properly, I changed a few more locations to make
use of the new types.

R=ahaas@chromium.org, titzer@chromium.org

Review-Url: https://codereview.chromium.org/2503403005
Cr-Commit-Position: refs/heads/master@{#41085}

BUG=chromium:665398

Review-Url: https://codereview.chromium.org/2509753002
Cr-Commit-Position: refs/heads/master@{#41084}

Adds --wasm-no-bounds-checks and --wasm-no-stack-checks which
help in diagnosing potential sources of slowdown in WASM code.

R=ahaas@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2511113002
Cr-Commit-Position: refs/heads/master@{#41083}

R=titzer@chromium.org
NOTRY=true
NOTREECHECKS=true

Review-Url: https://codereview.chromium.org/2511763002
Cr-Commit-Position: refs/heads/master@{#41082}

Collect feedback for oddballs in the interpreter compare operations handlers.
This is important to ensure that we don't consider oddball comparisons as
generic, which prevents optimization.

BUG=chromium:660947

Review-Url: https://codereview.chromium.org/2506283003
Cr-Commit-Position: refs/heads/master@{#41081}

BUG=
TBR=machenbach@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2515443002
Cr-Commit-Position: refs/heads/master@{#41080}

The ptr_to_* methods do (often unnecessary) type checks, and can
return nullptr. This is problematic since the handlified getter
uses them, and assumes the result to be non-null. So change
them to only to a DCHECK and never return nullptr, and introduce
maybe_ptr_to_* with the old semantics.

R=titzer@chromium.org, ahaas@chromium.org

Review-Url: https://codereview.chromium.org/2509053003
Cr-Commit-Position: refs/heads/master@{#41079}

Collect string feedback for compare operations. Without this,
functions which have a lot of string compare operations end up with
a high generic type percentage, and don't get optimized until very
late.

Currently TurboFan doesn't use this String feedback for compare
operations, but this could be done in future work if it is useful.

BUG=chromium:660947

Review-Url: https://codereview.chromium.org/2506013005
Cr-Commit-Position: refs/heads/master@{#41078}

V8 was applying incorrect optimization to them advancing the start position.

This would cause /foo$/y too match "barfoo", which it should not.

BUG=

Review-Url: https://codereview.chromium.org/2510743003
Cr-Commit-Position: refs/heads/master@{#41077}

Review-Url: https://codereview.chromium.org/2511553002
Cr-Commit-Position: refs/heads/master@{#41076}

R=machenbach@chromium.org
BUG=chromium:664068

Review-Url: https://codereview.chromium.org/2509843005
Cr-Commit-Position: refs/heads/master@{#41075}

BUG=
R=ahaas@chromium.or

Review-Url: https://codereview.chromium.org/2502383003
Cr-Commit-Position: refs/heads/master@{#41074}

Also fixed handling of load non-existent handlers outside typeof.

BUG=v8:5561, chromium:662854

Review-Url: https://codereview.chromium.org/2511603002
Cr-Commit-Position: refs/heads/master@{#41073}

There's no need to return anything.

Also add a DCHECK to make sure that we never mark a variable proxy as assigned
that is already resolved (to avoid potential inconsistency with the variable's
maybe_assigned status).

R=littledan@chromium.org
CC=mstarzinger@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2504613002
Cr-Commit-Position: refs/heads/master@{#41072}

The control edges in a TurboFan graph can form a cycle. To break this cycle in the int64-lowering we add special handling for loop nodes. Similar handling already exists for phi nodes and effectphi nodes, which breaks cycles formed by value edges and effect edges, respectively.

Review-Url: https://codereview.chromium.org/2511503002
Cr-Commit-Position: refs/heads/master@{#41071}

This hopefully avoids multiple error messages appearing on the same
line.

R=titzer@chromium.org, machenbach@chromium.org
BUG=chromium:660016

Review-Url: https://codereview.chromium.org/2503423006
Cr-Commit-Position: refs/heads/master@{#41070}

TBR=ahaas@chromium.org, kozyatinskiy@chromium.org
NOTRY=true
NOTREECHECKS=true

Review-Url: https://codereview.chromium.org/2503213004
Cr-Commit-Position: refs/heads/master@{#41069}

The test just prints the source text of each line on the stack.
Look how beautiful it reads \o/

BUG=chromium:659715
R=yangguo@chromium.org, kozyatinskiy@chromium.org
CC=titzer@chromium.org

Review-Url: https://codereview.chromium.org/2492123003
Cr-Commit-Position: refs/heads/master@{#41068}

Fix c3a6ca68

Fix compilation failure on MIPS and GCC cross compile that started to appear
after the CL c3a6ca68 landed. The compilation
error is due to:

.././src/objects-inl.h:4129:54: error: assuming signed overflow does not occur
when assuming that (X + c) < X is always false [-Werror=strict-overflow]
   DCHECK(index >= 0 && length >= 0 && index + length >= index &&

BUG=

Review-Url: https://codereview.chromium.org/2501963002
Cr-Commit-Position: refs/heads/master@{#41067}

Incremental marking does not use idle tasks anymore.

BUG=

Review-Url: https://codereview.chromium.org/2512643002
Cr-Commit-Position: refs/heads/master@{#41066}

This method is a slight misnomer. What we actually want to know is
whether the function was defined in a user-provided script.

Also remove redundant Script::hide_source flag.

R=bmeurer@chromium.org, ulan@chromium.org

Review-Url: https://codereview.chromium.org/2505853003
Cr-Commit-Position: refs/heads/master@{#41065}