V8DebuggerAgentImpl::m_skipAllPaused is moved to V8Debugger.
V8DebuggerAgentImpl::didPaused doesn't return shouldBreak flag and called only when break is required and stack trace presented.
V8DebuggerAgentImpl doesn't store paused context.
Logic of conversion step-next at return into step-in is moved to debug.cc.

BUG=none
R=dgozman@chromium.org,yangguo@chromium.org

Review-Url: https://codereview.chromium.org/2668763003
Cr-Commit-Position: refs/heads/master@{#42907}

BUG=

Review-Url: https://codereview.chromium.org/2640783007
Cr-Commit-Position: refs/heads/master@{#42906}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/7a418db..d4321a9

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/fc2f450..53604dd

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/960cc3e..88069f4

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

Review-Url: https://codereview.chromium.org/2669883004
Cr-Commit-Position: refs/heads/master@{#42905}

R=rossberg@chromium.org, bradnelson@chromium.org
BUG=chromium:682659

Review-Url: https://codereview.chromium.org/2670673002
Cr-Commit-Position: refs/heads/master@{#42904}

- and removed ":" from the output of console.count without argument.

BUG=none
R=luoe@chromium.org,alph@chromium.org

Review-Url: https://codereview.chromium.org/2674583002
Cr-Commit-Position: refs/heads/master@{#42903}

R=titzer@chromium.org

Review-Url: https://codereview.chromium.org/2662363003
Cr-Commit-Position: refs/heads/master@{#42902}

We don't track concurrent recompilation/optimization in RCS, disabling it will
give us a better idea of the performance of our compilers.

Change-Id: I8138b09d5f112914f7c7929e9ece6f543423fd03
Reviewed-on: https://chromium-review.googlesource.com/436404Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#42901}

BUG=v8:5911

Review-Url: https://codereview.chromium.org/2667963004
Cr-Commit-Position: refs/heads/master@{#42900}

BUG=v8:5516
R=vogelheim@chromium.org

Review-Url: https://codereview.chromium.org/2669153002
Cr-Commit-Position: refs/heads/master@{#42899}

Port eef855a1

R=yangguo@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2672813002
Cr-Commit-Position: refs/heads/master@{#42898}

R=bjaideep@ca.ibm.com, joransiu@ca.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/2665053006
Cr-Commit-Position: refs/heads/master@{#42897}

Port d68dfe86

Original Commit Message:

    Port the Call feedback machinery from the interpreter to the CallICStub
    as second step to unify the feedback collection. This removes a lot of
    hand-written native code, and makes the runtime miss handler obsolete.
    The next step will be to use the CallICStub from the interpreter as
    well.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:5049
LOG=N

Review-Url: https://codereview.chromium.org/2670003003
Cr-Commit-Position: refs/heads/master@{#42896}

And fixed gcc compilation.

BUG=none
R=alph@chromium.org,dgozman@chromium.org

Review-Url: https://codereview.chromium.org/2668363002
Cr-Commit-Position: refs/heads/master@{#42895}

Before this change, we attributed samples for the top-most interpreter frame to the second-topmost frame if we were in a bytecode handler with elided frame. With this change we try to detect that we are in a handler without a frame. If we are, we do not drop the topmost frame.

For example, consider the program

function inner() {
  var s = 0;
  for (var i = 0; i < 100000; i++) {
    s += i * i;
  }
  return s;
}

function trivial() {
  return inner();
}

for (var i = 0; i < 2000; i++) {
  trivial();
}

Before this change, d8 --prof --ignition --nocrankshaft and linux-tick-processor would produce:

  [JavaScript]:
   ticks  total  nonlib   name
   4885   83.4%   83.5%  Function: ~trivial a.js:15:17
    759   13.0%   13.0%  Function: ~inner a.js:7:15

After this change, we get

 [JavaScript]:
   ticks  total  nonlib   name
   5486   95.9%   96.2%  Function: ~inner a.js:7:15
      4    0.1%    0.1%  Function: ~trivial a.js:15:17

Review-Url: https://codereview.chromium.org/2667253004
Cr-Commit-Position: refs/heads/master@{#42894}

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

Review-Url: https://codereview.chromium.org/2670823002
Cr-Commit-Position: refs/heads/master@{#42893}

R=mstarzinger@chromium.org

Review-Url: https://codereview.chromium.org/2650193002
Cr-Commit-Position: refs/heads/master@{#42892}

The operator in question does not call arbitrary JavaSciprt, nor throw,
nor trigger a lazy deoptimization. Nodes hence do not need a frame-state
representing the "after" state of the operation.

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2672763002
Cr-Commit-Position: refs/heads/master@{#42891}

We don't need Code::CALL_IC for anything now that the CallICStub is
migrated and no longer hooks into the traditional IC system.

R=yangguo@chromium.org
BUG=v8:5049

Review-Url: https://codereview.chromium.org/2669193002
Cr-Commit-Position: refs/heads/master@{#42890}

Port the Call feedback machinery from the interpreter to the CallICStub
as second step to unify the feedback collection. This removes a lot of
hand-written native code, and makes the runtime miss handler obsolete.
The next step will be to use the CallICStub from the interpreter as
well.

Drive-by-fix: Adjust CallIC/CallICTrampoline descriptors names.

R=mvstanton@chromium.org
BUG=v8:5049

Review-Url: https://codereview.chromium.org/2670843002
Cr-Commit-Position: refs/heads/master@{#42889}

R=machenbach@chromium.org
BUG=v8:5920
NOTRY=true

Review-Url: https://codereview.chromium.org/2671713002
Cr-Commit-Position: refs/heads/master@{#42888}

R=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2675673002
Cr-Commit-Position: refs/heads/master@{#42887}

R=jgruber@chromium.org

Review-Url: https://codereview.chromium.org/2671703002
Cr-Commit-Position: refs/heads/master@{#42886}

This behavior was recently changed. Turns out that for some usage patterns
at least, populating the stub cache is significantly faster overall.

BUG=chromium:684428

Review-Url: https://codereview.chromium.org/2674653002
Cr-Commit-Position: refs/heads/master@{#42885}

This adds optional multi-architecture builds, allowing to compile
x86 and x64 in one build. The correctness fuzzer can be configured to
compare the two executables, e.g. to compare x86 to x64 run the
launcher with: --second-d8=clang_x86/d8 in an x64 build.

Configuring the executable's architecture is now simplified and
inferred from the gn build configuration.

Building for clusterfuzz has now a new canonical target that can be
used by the infrastructure (defaults to d8).

The clusterfuzz release builder is now defined to compile
multi-arch builds, which will have an effect as soon as the
infrastructure refers to the new clusterfuzz target.

BUG=chromium:673246
NOTRY=true
TBR=mstarzinger,jarin

Review-Url: https://codereview.chromium.org/2649133010
Cr-Commit-Position: refs/heads/master@{#42884}

BUG=

Review-Url: https://codereview.chromium.org/2663803002
Cr-Original-Commit-Position: refs/heads/master@{#42881}
Committed: https://chromium.googlesource.com/v8/v8/+/65ad1e35d9a97c1126a55cc9d3014598fd224259
Review-Url: https://codereview.chromium.org/2663803002
Cr-Commit-Position: refs/heads/master@{#42883}

Revert of [string] Migrate String.prototype.{split,replace} to TF (patchset #12 id:220001 of https://codereview.chromium.org/2663803002/ )

Reason for revert:
Breaks win64 debug:
https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20debug/builds/14967

Original issue's description:
> [string] Migrate String.prototype.{split,replace} to TF
>
> BUG=
>
> Review-Url: https://codereview.chromium.org/2663803002
> Cr-Commit-Position: refs/heads/master@{#42881}
> Committed: https://chromium.googlesource.com/v8/v8/+/65ad1e35d9a97c1126a55cc9d3014598fd224259

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

Review-Url: https://codereview.chromium.org/2671673003
Cr-Commit-Position: refs/heads/master@{#42882}

BUG=

Review-Url: https://codereview.chromium.org/2663803002
Cr-Commit-Position: refs/heads/master@{#42881}

First discovery by the names section fuzzer I think. During the decoding
of the names of locals only ok() of the outer decoder was checked, not
the ok() of the actual names section decoder.

R=tizer@chromium.org
BUG=chromium:684855

Review-Url: https://codereview.chromium.org/2648383007
Cr-Commit-Position: refs/heads/master@{#42880}

The CallIC is already not a traditional IC in the V8 sense, so it
doesn't make sense to integrate with the traditional IC machinery.
The plan is to migrate it away completely from the IC world and use
the code that is already available in the interpreter instead.

R=yangguo@chromium.org
BUG=v8:5049

Review-Url: https://codereview.chromium.org/2676543002
Cr-Commit-Position: refs/heads/master@{#42879}

- Remove obsolete BreakLocatorType.
- Perform PrepareStepOnThrow after OnException event, in case stepping
  was scheduled in the exception event.
- Use frame count instead of frame pointer for stepping. Frame pointer
  is not reliable due to possible deopts.
- Consistently check for inlined functions in inlined frames.
- Use SharedFunctionInfo in FloodWithOneshot and EnsureDebugInfo.

R=jgruber@chromium.org
BUG=v8:5901

Review-Url: https://codereview.chromium.org/2664793002
Cr-Commit-Position: refs/heads/master@{#42878}

First step to unify CallIC in Ignition, TurboFan/Crankshaft and
fullcodegen.

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

Review-Url: https://codereview.chromium.org/2669123002
Cr-Commit-Position: refs/heads/master@{#42877}

Rename the CallIC factory method to CallICTrampoline and the
CallICInOptimizedCode to CallIC to match the naming of the
stubs and better reflect their functionality.

R=yangguo@chromium.org

Review-Url: https://codereview.chromium.org/2670073002
Cr-Commit-Position: refs/heads/master@{#42876}

This introduces additional verification logic to ensure that the
condition passed to Branch/Select operators is always of type
Boolean.

CQ_INCLUDE_TRYBOTS=master.tryserver.v8:v8_win64_dbg
TBR=jarin@chromium.org
BUG=v8:5267

Review-Url: https://codereview.chromium.org/2672713002
Cr-Commit-Position: refs/heads/master@{#42875}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/47e07d6..7a418db

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/4ee31ea..fc2f450

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

Review-Url: https://codereview.chromium.org/2671563003
Cr-Commit-Position: refs/heads/master@{#42874}

Remove the cases that deal with a top pointer that is reset. We should always
be in a sane state wrt. top and age mark. Also add more DCHECKs.

BUG=chromium:672678

Review-Url: https://codereview.chromium.org/2674493002
Cr-Commit-Position: refs/heads/master@{#42873}

This avoids the need to pull in the UTF-8 encoding code from the public API,
and allows it to take advantage of any supported way that i::String can be
encoded (one- or two-byte).

Backward compatibility is maintained, but this is the behavior beginning
with this version.

BUG=chromium:686159

Review-Url: https://codereview.chromium.org/2665653004
Cr-Commit-Position: refs/heads/master@{#42872}

Also if the count is not specified, it should wake all waiters.

BUG=v8:4777

Review-Url: https://codereview.chromium.org/2659083004
Cr-Commit-Position: refs/heads/master@{#42871}

- Uses macros to reduce code duplication.
- Uses calls to VisitRO, VisitRR, VisitRROFloat, and VisitFloatUnop to
  reduce code bloat.

LOG=N
BUG=v8:4124

Review-Url: https://codereview.chromium.org/2669683002
Cr-Original-Commit-Position: refs/heads/master@{#42830}
Committed: https://chromium.googlesource.com/v8/v8/+/5e6eb91d0d66c9a118f1cc576accb649a17c5a9d
Review-Url: https://codereview.chromium.org/2669683002
Cr-Commit-Position: refs/heads/master@{#42870}

R=bjaideep@ca.ibm.com, joransiu@ca.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/2667203002
Cr-Commit-Position: refs/heads/master@{#42869}

R=bjaideep@ca.ibm.com, joransiu@ca.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/2668763005
Cr-Commit-Position: refs/heads/master@{#42868}