- Get rid of fixing up pointers on the main thread
- Get rid of sweeping on the main thread

Instead:
- Record (and process afterwards) slots in parallel
- Add the pages to the concurrent sweeper as pointers have already been fixed

BUG=chromium:581412
LOG=N
TEST=cctest/test-compaction/*

Review URL: https://codereview.chromium.org/1881423003

Cr-Commit-Position: refs/heads/master@{#35451}

Add relocatable pointers for wasm memory references that need to be
updated when wasm GrowMemory is used. Code generator changes to accept
relocatable constants as immediates.

Port 52148c41

TEST=
BUG=

Review URL: https://codereview.chromium.org/1886723003

Cr-Commit-Position: refs/heads/master@{#35450}

Left trimming assumes that nobody other than the JSArray has a reference to the
backing store. Sampling heap profiler may profile the backing store and keep a
reference too it. This reference was never updated on a left-trim, causing a
crash.

R=alph@chromium.org, hpayer@chromium.org, mattloring@google.com
BUG=

Review URL: https://codereview.chromium.org/1885723002

Cr-Commit-Position: refs/heads/master@{#35449}

- Get rid of temp lists and use a lock-protected deque instead

BUG=

Review URL: https://codereview.chromium.org/1886723002

Cr-Commit-Position: refs/heads/master@{#35448}

Operand values in Bytecodes.DecodeBytecodeAndOperands test are encoded
in little endian format. The test calls Bytecodes::Decode function which
reads the operands but the values are byte swapped on big endian
machines. Added big endian encoded data which decodes correctly on BE
machines.

BUG=

Review URL: https://codereview.chromium.org/1881423002

Cr-Commit-Position: refs/heads/master@{#35447}

Add the stubs for JavaScript's '<<', '>>' and '>>>' operators and lets Ignition make use of them in the respective bytecode handlers.

Committed: https://crrev.com/599369d6b8e1a5ccdca857def06eebcbacf47dd4
Cr-Commit-Position: refs/heads/master@{#35433}

Review URL: https://codereview.chromium.org/1881003002

Cr-Commit-Position: refs/heads/master@{#35446}

Despite man page documentation:

    -f Display the symbol table of a dynamic library flat (as one
       file not separate modules).

`nm` on mac treats `-f` as a shorthand for `-format`. The `-f` argument
does not seem to be required, so just remove it completely.

(For `-format` documentation - see `nm --help` on mac).

BUG=

Review URL: https://codereview.chromium.org/1840633002

Cr-Commit-Position: refs/heads/master@{#35445}

Revert of [stubs] Introduce LeftShift, SignedRightShift and UnsignedRightShift stubs. (patchset #3 id:40001 of https://codereview.chromium.org/1881003002/ )

Reason for revert:
Needed to revert https://codereview.chromium.org/1617503003

Original issue's description:
> [stubs] Introduce LeftShift, SignedRightShift and UnsignedRightShift stubs.
>
> Add the stubs for JavaScript's '<<', '>>' and '>>>' operators and lets Ignition make use of them in the respective bytecode handlers.
>
> Committed: https://crrev.com/599369d6b8e1a5ccdca857def06eebcbacf47dd4
> Cr-Commit-Position: refs/heads/master@{#35433}

TBR=bmeurer@chromium.org,epertoso@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/1880413002

Cr-Commit-Position: refs/heads/master@{#35444}

Revert of [Atomics] code stubs for atomic operations (patchset #28 id:530001 of https://codereview.chromium.org/1617503003/ )

Reason for revert:
[Sheriff] Roll was reverted. Please fix unused methods, see:
https://codereview.chromium.org/1884913002/

https://build.chromium.org/p/tryserver.chromium.win/builders/win_clang/builds/5585/steps/compile%20%28with%20patch%29/logs/stdio

Original issue's description:
> [Atomics] code stubs for atomic operations
>
> * New atomic code stubs for x64, ia32, arm, arm64
> * Add convenience functions JumpIfNotValidSmiValue, JumpIfUintNotValidSmiValue
>   to macro-assembler-ia32 (API based on x64 macro assembler)
> * Remove runtime implementation of Atomics.load, the code stub should always be
>   called instead
> * Add new test to mjsunit atomics test; check that Smi values of different
>   sizes are supported when possible, else fall back to HeapNumbers
>
> These changes were needed to add another codestub:
> * Bump kStubMajorKeyBits from 7 to 8
> * Reduce ScriptContextFieldStub::kSlotIndexBits from 13 to 12
>
> BUG=v8:4614
> LOG=y
>
> Committed: https://crrev.com/10b5febe11b318cfef130abae343183ac862e60d
> Cr-Commit-Position: refs/heads/master@{#35427}

TBR=jarin@chromium.org,bmeurer@chromium.org,rodolph.perfetta@gmail.com,binji@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4614

Review URL: https://codereview.chromium.org/1884883003

Cr-Commit-Position: refs/heads/master@{#35443}

TBR=hablich@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1885863003

Cr-Commit-Position: refs/heads/master@{#35442}

Fix after https://codereview.chromium.org/1887583002/

TBR=hablich@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1881163003

Cr-Commit-Position: refs/heads/master@{#35441}

Visit the Optimized Code Map on first call rather than closure creation.

This is useful for escape analysis, and helps upcoming changes to
type feedback gathering.

Adding notry due to crashed builders:
NOTRY=true
BUG=

Committed: https://crrev.com/9336f4cc6d25d39a128176679a70dbd13a6d946e
Cr-Commit-Position: refs/heads/master@{#35395}

Review URL: https://codereview.chromium.org/1670143002

Cr-Commit-Position: refs/heads/master@{#35440}

Annotate generator functions and loops therein with the number of contained
yields.  This information will eventually be used by the bytecode generator.

R=bmeurer@chromium.org
BUG=v8:4907
LOG=n

Review URL: https://codereview.chromium.org/1877403003

Cr-Commit-Position: refs/heads/master@{#35439}

A new script, bytecode_dispatches_report.py reads the table produced
when FLAG_trace_ignition_dispatches is enabled and produces either a
report of top source-destination pairs, or a heatmap that can be
viewed interactively and saved to file.

BUG=v8:4899
LOG=N

Review URL: https://codereview.chromium.org/1869423002

Cr-Commit-Position: refs/heads/master@{#35438}

Check if a previous run left an inconsistent state behind.
The check is right before trying to push a new state as then
all information is available, like commit message and tag
name.

This is still only a band-aid. If gnumbd is down for a
longer period, an unprocessed commit won't be found, but
the push attempt will still fail.

Review URL: https://codereview.chromium.org/1887583002

Cr-Commit-Position: refs/heads/master@{#35437}

... to avoid potential stack overflow when updating happens near the stack limit.

BUG=chromium:599440
LOG=Y

Review URL: https://codereview.chromium.org/1884653002

Cr-Commit-Position: refs/heads/master@{#35436}

This is very similar to the existing rule for a GTAGS file, and reuses
parts of it (the gtags.files file).

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

Review URL: https://codereview.chromium.org/1873253002

Cr-Commit-Position: refs/heads/master@{#35435}

R=hpayer@chromium.org
BUG=chromium:581412
LOG=N

Review URL: https://codereview.chromium.org/1886493003

Cr-Commit-Position: refs/heads/master@{#35434}

Add the stubs for JavaScript's '<<', '>>' and '>>>' operators and lets Ignition make use of them in the respective bytecode handlers.

Review URL: https://codereview.chromium.org/1881003002

Cr-Commit-Position: refs/heads/master@{#35433}

- Additionally allow to commit late lists to an already started sweeper

BUG=chromium:581412
LOG=N

Review URL: https://codereview.chromium.org/1871423002

Cr-Commit-Position: refs/heads/master@{#35432}

This patch replaces the unused 'take_snapshot' parameter on FatalProcessOutOfMemory()
with a 'is_heap_oom' parameter. The parameter is set to true on error paths where the
JS heap is out of memory, as distinct from a malloc() failure i.e. process out of memory.
The message output to stderr or passed to embedding applications via FatalErrorCallback
is 'Javascript heap out of memory' rather than 'process out of memory'.

BUG=

R=jochen@chromium.org, verwaest@chromium.org, michael_dawson@ca.ibm.com

Review URL: https://codereview.chromium.org/1873443002

Cr-Commit-Position: refs/heads/master@{#35431}

Instead of looking at the top JavaScriptFrame, take the needed information as
arguments.  This is in preparation of the new generators implementation.

R=adamk@chromium.org, bmeurer@chromium.org
BUG=v8:4907
LOG=n

Review URL: https://codereview.chromium.org/1883443003

Cr-Commit-Position: refs/heads/master@{#35430}

The StringAddStub can automatically convert arbitrary inputs according
to the semantics for the addition operator, if one side is already a
string.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1881413002

Cr-Commit-Position: refs/heads/master@{#35429}

Rolling v8/buildtools to de013cf87971d0ab40596f2275a633432c908052

Rolling v8/tools/clang to 05a5cb33164e3c656a3375a1614ab350ca799215

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

Review URL: https://codereview.chromium.org/1883703003

Cr-Commit-Position: refs/heads/master@{#35428}

* New atomic code stubs for x64, ia32, arm, arm64
* Add convenience functions JumpIfNotValidSmiValue, JumpIfUintNotValidSmiValue
  to macro-assembler-ia32 (API based on x64 macro assembler)
* Remove runtime implementation of Atomics.load, the code stub should always be
  called instead
* Add new test to mjsunit atomics test; check that Smi values of different
  sizes are supported when possible, else fall back to HeapNumbers

These changes were needed to add another codestub:
* Bump kStubMajorKeyBits from 7 to 8
* Reduce ScriptContextFieldStub::kSlotIndexBits from 13 to 12

BUG=v8:4614
LOG=y

Review URL: https://codereview.chromium.org/1617503003

Cr-Commit-Position: refs/heads/master@{#35427}

port 52148c41

Original Commit Message:
    Add relocatable pointers for wasm memory references that need to be updated when wasm GrowMemory is used. Code generator changes to accept relocatable constants as immediates.

R=gdeepti@google.com, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com, bjaideep@ca.ibm.com, mbrandy@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1884573003

Cr-Commit-Position: refs/heads/master@{#35426}

BUG=

Review URL: https://codereview.chromium.org/1883533006

Cr-Commit-Position: refs/heads/master@{#35425}

Port eb5fe0df

Original commit message:
    Add relocatable pointers for wasm memory references that need to
    be updated when wasm GrowMemory is used. Code generator changes to
    accept relocatable constants as immediates.

R=gdeepti@google.com, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1878233002

Cr-Commit-Position: refs/heads/master@{#35424}

The usage of __attribute__((format(x, y)) was either wrong or missing from multiple functions, leading to erroneous formats. This CL:

 - Imports PRINTF_FORMAT macro from Chrome's src/base/compiler-specific.h.
 - Uses it appropriately.
 - Imports Chrome's base/format_macros.h mainly to fix size_t formats (further cleanup could be done).
 - Fixes a bunch of incorrect formats.

Original CL: https://codereview.chromium.org/1869433004
Reverted in: https://codereview.chromium.org/1867383002
Reverted again in: https://codereview.chromium.org/1877823003

Reverts due to non-CQ bots:
  - First: v8_win_dbg, v8_win64_dbg, v8_mac_dbg
  - Second: gc mole (added to v8_linux_rel_ng for this patch)

R= jochen@chromium.org
TBR= ahaas@chromium.org,bmeurer@chromium.org,yangguo@chromium.org

Review URL: https://codereview.chromium.org/1872203005

Cr-Commit-Position: refs/heads/master@{#35423}

Port 79ff6507

R=verwaest@chromium.org, joransiu@ca.ibm.com, mbrandy@us.ibm.com, michael_dawson@ca.ibm.com, bjaideep@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1877353002

Cr-Commit-Position: refs/heads/master@{#35422}

When %OptimizeOSR is used with ignition flag, the runtime function tries to
compile for OSR on interpreted functions. This cl modifies
Runtime_OptimizeOsr function to return false for interpreted frames.

BUG=v8:4280,chromium:599002
LOG=N

Review URL: https://codereview.chromium.org/1880073002

Cr-Commit-Position: refs/heads/master@{#35421}

Fix for drotr and drotr32 instructions in MIPS64 simulator.

BUG=

Review URL: https://codereview.chromium.org/1880953002

Cr-Commit-Position: refs/heads/master@{#35420}

This uses the common predicate SharedFunctionInfo::IsApiFunction to
determine flushability. Just a minor cleanup, no change in semantics.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1878183002

Cr-Commit-Position: refs/heads/master@{#35419}

Previously TurboFan always went to the runtime to allocate in old space,
which is pretty slow compare to a stub call.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1877323002

Cr-Commit-Position: refs/heads/master@{#35418}

port 2e329666

Original Commit Message:
    ... instead of doing stack magic.  This is a cleanup in preparation for the new
    generators implementation.

R=bmeurer@chromium.org, neis@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com, bjaideep@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1882553003

Cr-Commit-Position: refs/heads/master@{#35417}

Port 2e329666

Original commit message:
    ... instead of doing stack magic.  This is a cleanup in preparation for the new
    generators implementation.

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

Review URL: https://codereview.chromium.org/1874323002

Cr-Commit-Position: refs/heads/master@{#35416}

Makes browser_tests --gtest_filter=CrSettingsBrowserTest.CrSettingsTest
complete in a little over 8 seconds instead of timing out after 45s
on my box.  Without this patch, the test is much slower in gn builds
than in gyp builds.

v8/ part, goes with https://codereview.chromium.org/1880693003

BUG=chromium:586511
LOG=n

Review URL: https://codereview.chromium.org/1882453002

Cr-Commit-Position: refs/heads/master@{#35415}

R=ulan@chromium.org
BUG=chromium:581412
LOG=N

Review URL: https://codereview.chromium.org/1882033002

Cr-Commit-Position: refs/heads/master@{#35414}

This ensures that GC tracer scope is nested in a trace event.

BUG=

Review URL: https://codereview.chromium.org/1881993002

Cr-Commit-Position: refs/heads/master@{#35413}

When the embedder sets the heap tracer, V8, during marking, will collect all reachable wrappers, and then ask embedder to trace its heap. The embedder is expected to call PersistentBase::RegisterExternalReference with all wrappers reachable from the given ones. This fixed point iteration happens in MarkCompact::ProcessEphemeralMarking.

For more efficient object visiting during marking, we need a special JS_API_OBJECT_TYPE (in tandem with already existing JS_SPECIAL_API_OBJECT_TYPE) and corresponding visitor (JSApiObjectVisitor).

BUG=chromium:468240
LOG=no

Review URL: https://codereview.chromium.org/1844413002

Cr-Commit-Position: refs/heads/master@{#35412}