All the counters, trace events and runtime call stats roughly create a 30%
overhead when calling into the runtime. This CL factors out the counters into
separate non-inlined functions. This way we can reduce the overhead to a
minimum and still have some useful stats without a compile-time flag.

BUG=chromium:596055
LOG=n

Review URL: https://codereview.chromium.org/1868513002

Cr-Commit-Position: refs/heads/master@{#35308}

Implementation of turbofan operators Word32PairShl, Word32PairShr,
Word32PairSar, Int32AddPair and Int32SubPair for MIPS.

Port of:
https://codereview.chromium.org/1765973002/
https://codereview.chromium.org/1778893004/
https://codereview.chromium.org/1778493004/
https://codereview.chromium.org/1778893005/
https://codereview.chromium.org/1842013002/

Added tests for Word32PairShr and Word32PairSar in test-run-machops.cc.

BUG=

Review URL: https://codereview.chromium.org/1819383002

Cr-Commit-Position: refs/heads/master@{#35307}

BUG=

Review URL: https://codereview.chromium.org/1861963003

Cr-Commit-Position: refs/heads/master@{#35306}

If no objects allocated at a location are live when a profile is
collected we report a zero count sample. This is confusing to those
looking at the profiles and will leak memory.

We now delete allocations once the number of sampled live objects for
that location reaches zero.

R=ofrobots@google.com
BUG=

Review URL: https://codereview.chromium.org/1828333002

Cr-Commit-Position: refs/heads/master@{#35305}

BUG=535160
TBR=sergiyb@chromium.org, kjellander@chromium.org
NOTRY=true
NOPRESUBMIT=true

Review URL: https://codereview.chromium.org/1864963003

Cr-Commit-Position: refs/heads/master@{#35304}

BUG=

NOTRY=true
NOPRESUBMIT=true
NOTREECHECKS=true

Review URL: https://codereview.chromium.org/1865903002

Cr-Commit-Position: refs/heads/master@{#35303}

drive-by-fix: unify template parameters

BUG=chromium:586068
LOG=n

Review URL: https://codereview.chromium.org/1857163002

Cr-Commit-Position: refs/heads/master@{#35302}

BUG=

Review URL: https://codereview.chromium.org/1865873002

Cr-Commit-Position: refs/heads/master@{#35301}

BUG=

Review URL: https://codereview.chromium.org/1834613003

Cr-Commit-Position: refs/heads/master@{#35300}

BUG=

Review URL: https://codereview.chromium.org/1853373004

Cr-Commit-Position: refs/heads/master@{#35299}

An overzealous removal in
https://crrev.com/9e39a9fff1c2966a3f650a4c31dbbe533886d614
caused the disassembly not to be annotated with ticks, even when
requested.

LOG=N

Review URL: https://codereview.chromium.org/1861323002

Cr-Commit-Position: refs/heads/master@{#35298}

BUG=

Review URL: https://codereview.chromium.org/1865863003

Cr-Commit-Position: refs/heads/master@{#35297}

BUG=chromium:600258
LOG=n

Review URL: https://codereview.chromium.org/1864433003

Cr-Commit-Position: refs/heads/master@{#35296}

Now that we pass all these tests, we need to update the test
expectations.

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1864013002

Cr-Commit-Position: refs/heads/master@{#35295}

- MemoryAllocator is now part of Heap
- CodeRange is now part of MemoryAllocator

BUG=chromium:581076
LOG=N

Review URL: https://codereview.chromium.org/1862653002

Cr-Commit-Position: refs/heads/master@{#35294}

This particularly changes the StackTraceFrameIterator such that is not
only returs JavaScriptFrames, but also WasmFrames. Because of that,
some methods (Summarize, function, receiver) were pulled up to the
StandardFrame, with specializations in JavaScriptFrame and WasmFrame.

R=jfb@chromium.org, titzer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1861283002

Cr-Commit-Position: refs/heads/master@{#35293}

BUG=

Review URL: https://codereview.chromium.org/1862993002

Cr-Commit-Position: refs/heads/master@{#35292}

The previous code cache system required stubs to be marked with a StubType, causing them to be inserted either into a fixed array or into a dictionary-mode code cache. This could cause names to be in both cases, and lookup would just find the "fast" one first. Given that we clear out the caches on each GC, the memory overhead shouldn't be too bad. Additionally, the dictionary itself should just stay linear for small arrays; that's faster anyway.

This CL additionally deletes some dead IC code.

BUG=

Review URL: https://codereview.chromium.org/1846963002

Cr-Commit-Position: refs/heads/master@{#35291}

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

Review URL: https://codereview.chromium.org/1861293002

Cr-Commit-Position: refs/heads/master@{#35290}

1) I moved the implementations of the wrapper functions into a new cc
file so that I can use these wrapper functions in tests.

2) I made a generic test for all tests in
test-run-calls-to-external-references.cc. In the new test we only
compare the result of a function call through an external reference with
the result of a direct function call. This is sufficient because we only
want to test function calls through external references work here.
The implementation of these functions are tested somewhere else.

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1853123002

Cr-Commit-Position: refs/heads/master@{#35289}

Review URL: https://codereview.chromium.org/1855943002

Cr-Commit-Position: refs/heads/master@{#35288}

Adds a MultiplyStub for the multiplication operator and hooks it with TurboFan and Ignition.

Currently, the SMI times SMI case is handled by converting both the operands to double precision floating points, we may consider adding a fast path later.

Review URL: https://codereview.chromium.org/1860043002

Cr-Commit-Position: refs/heads/master@{#35287}

R=ahaas@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1860103002

Cr-Commit-Position: refs/heads/master@{#35286}

SingletonFor(type, state) returns NULL and does nothing whenever SingletonFor(type) also return NULL. So checking this beforehand is redundant.

This is my first CL, so I also use it to get familiar with the system.

R=titzer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1862753003

Cr-Commit-Position: refs/heads/master@{#35285}

BUG=

Review URL: https://codereview.chromium.org/1864953003

Cr-Commit-Position: refs/heads/master@{#35284}

Introduce a ResumeGeneratorTrampoline, which does the actual stack state
reconstruction (currently always restores a fullcodegen frame), and
introduce appropriate TurboFan builtins for %GeneratorPrototype%.next,
%GeneratorPrototype%.return and %GeneratorPrototype%.throw based on
this native builtin.

Also unify the flooding in case of step-in to always work based on
JSFunction and remove the special casing for JSGeneratorObject.

R=mstarzinger@chromium.org, neis@chromium.org
TBR=rossberg@chromium.org
BUG=chromium:513471
LOG=n

Review URL: https://codereview.chromium.org/1865833002

Cr-Commit-Position: refs/heads/master@{#35283}

BUG=chromium:590071
LOG=N

Review URL: https://codereview.chromium.org/1856123005

Cr-Commit-Position: refs/heads/master@{#35282}

Anotates bytecodes with a description of how each uses the accumulator.

Validates annotations and uses of accumulator when generating bytecode
handlers.

Only prints the accumulator during tracing where used.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1852213002

Cr-Commit-Position: refs/heads/master@{#35281}

Rolling v8/third_party/icu to c291cde264469b20ca969ce8832088acb21e0c48

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

Review URL: https://codereview.chromium.org/1863963002

Cr-Commit-Position: refs/heads/master@{#35280}

The Chrome Extensions code that was broken by this change the first time
it landed has been amended to deal appropriately with the ES2015
semantics in https://codereview.chromium.org/1864733002/.

BUG=v8:4602
LOG=y

Review URL: https://codereview.chromium.org/1857313003

Cr-Commit-Position: refs/heads/master@{#35279}

BUG=v8:4680
LOG=N
TBR=mstarzinger@chromium.org,rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/1865683002

Cr-Commit-Position: refs/heads/master@{#35278}

The parser eagerly rewrites destructuring assignments occuring
in formal parameter initializers, because not doing so would
cause the BindingPattern rewriting to be confused and do the
wrong thing.

This change prevents this rewriting from descending into the
bodies of lazily parsed functions.

In general, it's a mistake to descend into the bodies of function
literals anyways, since they are rewritten separately on their
own time, so there is no distinction made between lazily
"throw away" eagerly parsed functions in the temporary parser
arena, or "real" eagerly parsed functions that will be compiled.

BUG=chromium:594084, v8:811
LOG=N
R=adamk@chromium.org, littledan@chromium.org

Review URL: https://codereview.chromium.org/1864553002

Cr-Commit-Position: refs/heads/master@{#35277}

Since interface-descriptors-ppc.h is removed, so remove it from v8.gyp as well.

R=machenbach@chromium.org,joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1864593002

Cr-Commit-Position: refs/heads/master@{#35276}

We decided to remove related devtools experiment.

BUG=chromium:526811
LOG=Y
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1833563002

Cr-Commit-Position: refs/heads/master@{#35275}

R=ahaas@chromium.org,bradnelson@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1862633002

Cr-Commit-Position: refs/heads/master@{#35274}

R=bradnelson@chromium.org
BUG=chromium:599825
LOG=Y

Review URL: https://codereview.chromium.org/1858263002

Cr-Commit-Position: refs/heads/master@{#35273}

R=ahaas@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1856413002

Cr-Commit-Position: refs/heads/master@{#35272}

Previously, CreateDataProperty would fail a DCHECK when used to create
an integer indexed property on a TypedArray. This patch makes it throw
a TypeError instead. The issue came up when Array.prototype.concat
was repaired to use CreateDataProperty rather than SetElement; concat
can be tricked into making a new TypedArray if it is given an Array
whose prototype is a TypedArray. This patch prevents the issue.

R=adamk
LOG=Y
BUG=chromium:596394

Review URL: https://codereview.chromium.org/1821723004

Cr-Commit-Position: refs/heads/master@{#35271}

R=neis@chromium.org
BUG=v8:4887
LOG=N

Review URL: https://codereview.chromium.org/1857263002

Cr-Commit-Position: refs/heads/master@{#35270}

BUG=chromium:599414
LOG=n

Review URL: https://codereview.chromium.org/1863553003

Cr-Commit-Position: refs/heads/master@{#35269}