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}

This adds clearAllBreakPoints functionality (which requires tracking set
breakpoints internally), and several script-related functions that rely
on runtime functions.

BUG=v8:5530

Review-Url: https://codereview.chromium.org/2508853003
Cr-Commit-Position: refs/heads/master@{#41064}

BUG=v8:5628
NOTRY=true

Review-Url: https://codereview.chromium.org/2508093002
Cr-Commit-Position: refs/heads/master@{#41063}

This adds access to the LiveEdit API object, frame.restart(), and
various breakpoint setters. The LiveEdit API still depends on the JS
debugging context and blocks its removal; but it should be removed
once LiveEdit is rewritten in the midterm.

BUG=v8:5530

Review-Url: https://codereview.chromium.org/2503293002
Cr-Commit-Position: refs/heads/master@{#41062}

R=ishell@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2505853005
Cr-Commit-Position: refs/heads/master@{#41061}

R=jochen@chromium.org, kozyatinskiy@chromium.org

Review-Url: https://codereview.chromium.org/2510633002
Cr-Commit-Position: refs/heads/master@{#41060}

In Crankshaft we can actually do an abstract interpretation of the
@@hasInstance lookup when optimizing instanceof and then use the
normal machinery to protect the result instead of relying on the
global @@hasInstance protector cell for optimizations.

This recovers the 100x performance drop in Node.js v7 reported in
https://github.com/nodejs/node/issues/9634. This patch should be
easily back-mergable to Node.js v7.

BUG=v8:5640
R=yangguo@chromium.org,franzih@chromium.org

Review-Url: https://codereview.chromium.org/2504263004
Cr-Commit-Position: refs/heads/master@{#41059}

R=jarin@chromium.org
BUG=v8:5267

Review-Url: https://codereview.chromium.org/2507063003
Cr-Commit-Position: refs/heads/master@{#41058}

Add computed property names in object literal micro-benchmarks.

Taken from http://kpdecker.github.io/six-speed/

BUG=v8:5622

Review-Url: https://codereview.chromium.org/2509593004
Cr-Commit-Position: refs/heads/master@{#41057}

Inspector uses this type for all internal scripts, e.g. injected-script-source.js. Scripts with new type are not reported by remote debugging protocol, frames from them are ignored.

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel
BUG=none
R=yangguo@chromium.org,dgozman@chromium.org

Review-Url: https://codereview.chromium.org/2499273003
Cr-Commit-Position: refs/heads/master@{#41056}

This allows to show wasm source (disassembled wasm code) in DevTools.
See design doc for details.

More tests for the disassembly will have to follow. Also, the text
format (generated by V8) will be changed.

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

Review-Url: https://codereview.chromium.org/2493773003
Cr-Commit-Position: refs/heads/master@{#41055}

BUG=chromium:576312, v8:5561

Review-Url: https://codereview.chromium.org/2507663003
Cr-Commit-Position: refs/heads/master@{#41054}

We do not have to invalidate the abstract state if we are transitioning to
the object's map.

Review-Url: https://codereview.chromium.org/2510843002
Cr-Commit-Position: refs/heads/master@{#41053}

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

Review-Url: https://codereview.chromium.org/2507853002
Cr-Commit-Position: refs/heads/master@{#41052}

Now we don't need to call collectSample on each V8StackTraceImpl::capture during collecting profile.

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel
BUG=none
R=alph@chromium.org,dgozman@chromium.org

Review-Url: https://codereview.chromium.org/2510823002
Cr-Commit-Position: refs/heads/master@{#41051}

Revert of Refactor SharedFunctionInfo::IsBuiltin. (patchset #1 id:1 of https://codereview.chromium.org/2505853003/ )

Reason for revert:
Breaks layout tests:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/11394

Original issue's description:
> Refactor SharedFunctionInfo::IsBuiltin.
>
> 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

TBR=bmeurer@chromium.org,ulan@chromium.org,yangguo@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/2512463002
Cr-Commit-Position: refs/heads/master@{#41050}

The timer can be missing in the timers stack when RCS is started dynamically.

BUG=chromium:665659
TBR=cbruni@chromium.org

Review-Url: https://codereview.chromium.org/2505813002
Cr-Commit-Position: refs/heads/master@{#41049}

R=titzer@chromium.org

Review-Url: https://codereview.chromium.org/2502373002
Cr-Commit-Position: refs/heads/master@{#41048}

BUG=

Review-Url: https://codereview.chromium.org/2509683002
Cr-Commit-Position: refs/heads/master@{#41047}

The reasons are:
1) The names dictionaries in the feedback metadata seems to consume a lot of memory
   and the idea didn't payoff.
2) The absence of a name parameter blocks data handlers support in LoadGlobalIC.

This CL reverts a part of r37278 (https://codereview.chromium.org/2096653003/).

BUG=chromium:576312, v8:5561

Review-Url: https://codereview.chromium.org/2510653002
Cr-Commit-Position: refs/heads/master@{#41046}

BUG=chromium:665886

Review-Url: https://codereview.chromium.org/2502393002
Cr-Commit-Position: refs/heads/master@{#41045}

The ScriptBreakpoint struct was before just holding line, column and
condition. It now additionally holds the scriptId.
This encapsulates information nicer, and allows for easier translation
of wasm locations, since one struct now holds all information needed
for the translation.

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

Review-Url: https://codereview.chromium.org/2491133003
Cr-Commit-Position: refs/heads/master@{#41044}

R=clemensh@chromium.org,mtrofin@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2510673002
Cr-Commit-Position: refs/heads/master@{#41043}

BUG=chromium:664793

Review-Url: https://codereview.chromium.org/2510733002
Cr-Commit-Position: refs/heads/master@{#41042}

In order to address a performance issue.

BUG=v8:5512, chromium:664937

Review-Url: https://codereview.chromium.org/2506003002
Cr-Commit-Position: refs/heads/master@{#41041}

R=jarin@chromium.org

BUG=

Review-Url: https://codereview.chromium.org/2504913003
Cr-Commit-Position: refs/heads/master@{#41040}

Revert of [Turbofan] CodeGenerator for ARM avoids moves from VFP to general regs. (patchset #4 id:60001 of https://codereview.chromium.org/2497483002/ )

Reason for revert:
This was a speculative fix for perf regressions on Nexus 10 and ChromeOS. However, perf graphs after this landed show no improvement, so we should go back to the smaller, simpler code before.

Original issue's description:
> [Turbofan] CodeGenerator for ARM avoids moves from VFP to general regs.
> - Adds VmovExtended, VswpExtended methods to MacroAssembler. These methods
> use only VFP registers to perform s-register moves.
>
> LOG=N
> BUG=v8:4124

TBR=bmeurer@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:4124

Review-Url: https://codereview.chromium.org/2505003002
Cr-Commit-Position: refs/heads/master@{#41039}

Now that we consistently preparse the parameters of a preparsed
function, these no longer crash.

BUG=5501

Review-Url: https://codereview.chromium.org/2502333002
Cr-Commit-Position: refs/heads/master@{#41038}