This fixes a regression in Octane's pdf.js after r30818. The bug itself
has been present for a long time, but StringCompareStub wasn't actually
used until r30818 so it went unnoticed.

Review URL: https://codereview.chromium.org/1399983002

Cr-Commit-Position: refs/heads/master@{#31227}

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1406493002

Cr-Commit-Position: refs/heads/master@{#31226}

This changes hashing and comparison functions for JSCreateClosure
operators to be based in the handle location instead of the referenced
object identity. This is in sync with all other JS operators.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1388233007

Cr-Commit-Position: refs/heads/master@{#31225}

Before this CL, we created one live range per successive set of
deferred blocks. For scenarios with many such blocks, this creates
an upfront pressure for the register allocator to deal with many ranges.
Linear sorts ranges, which is a super-linear operation.

The change places all deferred intervals into one range, meaning that,
at most, there will be twice as many live ranges as the original set. In
pathological cases (benchmarks/Compile/slow_nbody1.js), this change
halves the compilation time. We see some improvements elsewhere,
notably SQLite at ~4-5%.

We may be able to avoid the subsequent merge. Its cost is the
additional ranges it may need to create. The sole reason for the merge
phase is to provide an unchanged view of the world to the subsequent
phases. With the at-most-one splinter model, we may be able to teach
the other phases about splintering - should we find perf hindrances
due to merging.

Review URL: https://codereview.chromium.org/1391023007

Cr-Commit-Position: refs/heads/master@{#31224}

Rolling v8/tools/clang to a56c9063d582660d29b32f967ce20875c589fc3e

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

Review URL: https://codereview.chromium.org/1407453002

Cr-Commit-Position: refs/heads/master@{#31223}

TEST=
BUG=

Review URL: https://codereview.chromium.org/1400833002

Cr-Commit-Position: refs/heads/master@{#31222}

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/1390953004

Cr-Commit-Position: refs/heads/master@{#31221}

For live ranges with many use positions, such as those encountered in
some unity asm.js code, this change significantly reduces compile time
(e.g. benchmarks/Compile/slow_nbody1.js: from ~6s to 2s). The
improvement is solely due to regressions (fixed by this CL) due to
splintering.

This CL does not fully address compile time problems for large
functions in Turbofan, but constitutes a step in the right direction.

Review URL: https://codereview.chromium.org/1386253004

Cr-Commit-Position: refs/heads/master@{#31220}

Revert of [heap] Decrease large object limit for regular heap objects. (patchset #3 id:40001 of https://codereview.chromium.org/1392823003/ )

Reason for revert:
broken tests

Original issue's description:
> [heap] Decrease large object limit for regular heap objects.
>
> Committed: https://crrev.com/e887d42342b3449f64fb6078f84f6c55bae3978d
> Cr-Commit-Position: refs/heads/master@{#31217}

TBR=mlippautz@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1402823002

Cr-Commit-Position: refs/heads/master@{#31219}

BUG=v8:4482
LOG=n

Review URL: https://codereview.chromium.org/1397513004

Cr-Commit-Position: refs/heads/master@{#31218}

Review URL: https://codereview.chromium.org/1392823003

Cr-Commit-Position: refs/heads/master@{#31217}

The data structure that holds the optimized code is becoming essential for
additional functionality, too.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1399033002

Cr-Commit-Position: refs/heads/master@{#31216}

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/1399623004

Cr-Commit-Position: refs/heads/master@{#31215}

The revert of the original change in question did not recover
regressions, which allows us to reland this cleanup after all.

This reverts commit 871529b4.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1393773004

Cr-Commit-Position: refs/heads/master@{#31214}

Port 2d4aeaad

Original commit message:
    The stack manipulation was expensive. Two virtual registers are better.

R=mvstanton@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/1390343004

Cr-Commit-Position: refs/heads/master@{#31213}

Revert of Don't compile functions in a context the caller doesn't have access to (patchset #1 id:1 of https://codereview.chromium.org/1393713006/ )

Reason for revert:
[Sheriff] Breaks layout tests. Please add needsmanualrebaseline upstream first if intended. E.g.:
http://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/2263

(one of them is a timeout that only happens with this commit)

Original issue's description:
> Don't compile functions in a context the caller doesn't have access to
>
> Instead, just return undefined.
>
> A side effect of this is that it's no longer possible to compile
> functions in a detached context.
>
> Based on https://codereview.chromium.org/294073002 but taking access
> check callbacks into account
>
> BUG=chromium:541703
> R=verwaest@chromium.org
> LOG=y
>
> Committed: https://crrev.com/9a5e2f512c4aa90563eb575605c2a8c2a92ac9f4
> Cr-Commit-Position: refs/heads/master@{#31208}

TBR=verwaest@chromium.org,jochen@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:541703

Review URL: https://codereview.chromium.org/1395583004

Cr-Commit-Position: refs/heads/master@{#31212}

Previously, name conflicts between var and let declarations were only
made into exceptions if they were visible at parse-time. This patch adds
runtime checks so that sloppy-mode direct eval can't introduce conflicting
var declarations. The change is implemented by traversing the scope chain
when a direct eval introduces a var declaration to look for conflicting
let declarations, up to the function boundary.

BUG=v8:4454
R=adamk
LOG=Y

Review URL: https://codereview.chromium.org/1382513003

Cr-Commit-Position: refs/heads/master@{#31211}

  -Bitwise Or
  -Bitwise Xor
  -Bitwise And

Adds the above bytecodes, support to BytecodeGenerator and BytecodeArrayBuilder to enable it's use, it's implementation and tests.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1386133002

Cr-Commit-Position: refs/heads/master@{#31210}

R=rossberg
BUG=

Review URL: https://codereview.chromium.org/1403683003

Cr-Commit-Position: refs/heads/master@{#31209}

Instead, just return undefined.

A side effect of this is that it's no longer possible to compile
functions in a detached context.

Based on https://codereview.chromium.org/294073002 but taking access
check callbacks into account

BUG=chromium:541703
R=verwaest@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/1393713006

Cr-Commit-Position: refs/heads/master@{#31208}

BUG=chromium:535160
LOG=n
NOTRY=true

Review URL: https://codereview.chromium.org/1395343002

Cr-Commit-Position: refs/heads/master@{#31207}

Revert of Stage --harmony_sloppy_function (patchset #2 id:20001 of https://codereview.chromium.org/1393423002/ )

Reason for revert:
This still breaks Inbox.

Original issue's description:
> Stage --harmony_sloppy_function
>
> This patch turns on ES2015-style function hoisting semantics in
> staging. --harmony_sloppy_function was previously staged, leading
> to a number of bugs being filed and the staging being reversed;
> important bugs have been fixed, so it is time to try again.
>
> R=adamk
> LOG=Y
> BUG=v8:4285
>
> Committed: https://crrev.com/333e27fd99f8187c97e62b9538529900f0a30668
> Cr-Commit-Position: refs/heads/master@{#31190}

TBR=adamk@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4285

Review URL: https://codereview.chromium.org/1402763003

Cr-Commit-Position: refs/heads/master@{#31206}

Adds support for following operators
 -Shift left
 -Shift right
 -Shift right logical

Adds the above bytecodes, support to BytecodeGenerator and BytecodeArrayBuilder
to enable it's use, it's implementation and tests.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1392913002

Cr-Commit-Position: refs/heads/master@{#31205}

The stack manipulation was expensive. Two virtual registers are better.

BUG=

Review URL: https://codereview.chromium.org/1376933006

Cr-Commit-Position: refs/heads/master@{#31204}

Give the SupportedMachineOperatorFlags to GraphAndBuilders to allow the use of optional operators in tests.

BUG=

Review URL: https://codereview.chromium.org/1398023002

Cr-Commit-Position: refs/heads/master@{#31203}

Review URL: https://codereview.chromium.org/1386383003

Cr-Commit-Position: refs/heads/master@{#31202}

Scope has no subclasses, so "protected" should just be "private". And
there is no ParserFactory class, so making it a friend doesn't buy us
anything.

Review URL: https://codereview.chromium.org/1393303005

Cr-Commit-Position: refs/heads/master@{#31201}

Now emits `Array buffer allocation failed` instead of
`Invalid array buffer length`.

Review URL: https://codereview.chromium.org/1393263003

Cr-Commit-Position: refs/heads/master@{#31200}

BUG=

Review URL: https://codereview.chromium.org/1397003002

Cr-Commit-Position: refs/heads/master@{#31199}

Revert of improve perf_basic_prof filename reporting (patchset #4 id:60001 of https://codereview.chromium.org/1396843004/ )

Reason for revert:
The test-case has issues on windows. http://build.chromium.org/p/client.v8/builders/V8%20Win32%20-%20debug%20-%203/builds/5011/steps/Check/logs/stdio

Original issue's description:
> improve perf_basic_prof filename reporting
>
> Re-implement https://codereview.chromium.org/1388543002 after fixing the issue
> with SNPrintF crashing on windows when a zero-length buffer is passed in.
>
> R=jkummerow@chromium.org,yangguo@chromium.org,yurys@chromium.org
> BUG=chromium:539892
> LOG=N
>
> Committed: https://crrev.com/701ba0b255f9c34f4b8c43584ef1e35040474e7d
> Cr-Commit-Position: refs/heads/master@{#31197}

TBR=jkummerow@chromium.org,yangguo@chromium.org,yurys@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:539892

Review URL: https://codereview.chromium.org/1400813003

Cr-Commit-Position: refs/heads/master@{#31198}

Re-implement https://codereview.chromium.org/1388543002 after fixing the issue
with SNPrintF crashing on windows when a zero-length buffer is passed in.

R=jkummerow@chromium.org,yangguo@chromium.org,yurys@chromium.org
BUG=chromium:539892
LOG=N

Review URL: https://codereview.chromium.org/1396843004

Cr-Commit-Position: refs/heads/master@{#31197}

This will allow for probing access from any context to any receiver in a
future CL.

BUG=none
R=jkummerow@chromium.org,verwaest@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1398093002

Cr-Commit-Position: refs/heads/master@{#31196}

Makes debugging failures a bit easier

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

Review URL: https://codereview.chromium.org/1398703007

Cr-Commit-Position: refs/heads/master@{#31195}

Fixes clang on windows warning:
..\..\v8\src\base\platform\platform-win32.cc(836,1) :
  error: function declared 'noreturn' should not return
   [-Werror,-Winvalid-noreturn]

CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win_clang_rel,win_clang_x64_rel

Review URL: https://codereview.chromium.org/1390193003

Cr-Commit-Position: refs/heads/master@{#31194}

The test had an effect phi with one effect input connected to a loop with two control inputs. Also, the Terminate node was used by the effect phi.

Review URL: https://codereview.chromium.org/1398763002

Cr-Commit-Position: refs/heads/master@{#31193}

strict mode.

LOG=N
BUG=chromium:423739

Review URL: https://codereview.chromium.org/1381083004

Cr-Commit-Position: refs/heads/master@{#31192}

Cr-Commit-Position: refs/heads/master@{#31191}

This patch turns on ES2015-style function hoisting semantics in
staging. --harmony_sloppy_function was previously staged, leading
to a number of bugs being filed and the staging being reversed;
important bugs have been fixed, so it is time to try again.

R=adamk
LOG=Y
BUG=v8:4285

Review URL: https://codereview.chromium.org/1393423002

Cr-Commit-Position: refs/heads/master@{#31190}

Make the end position of a regexp literal the first character following the regexp. This matches the behaviour of number literals and string literals, as well as single-character tokens.

This change corrects the lazy-parsing of arrow functions with concise bodies, whose last token is a regular expression literal.

BUG=v8:4474
LOG=N
R=wingo@igalia.com, adamk@chromium.org, rossberg@chromium.org

Review URL: https://codereview.chromium.org/1389313003

Cr-Commit-Position: refs/heads/master@{#31189}

Not all register codes are safe for use on all architectures.
Using RegisterConfiguration when picking a calling convention
in test-multiple-return.

BUG=None
TEST=test-multiple-return
R=titzer@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/1401453002

Cr-Commit-Position: refs/heads/master@{#31188}