Creates an AstStringConstants container which pre-initializes the
string constants used by AstValueFactory. This ensures that all
AstValueFactories will produce the same AstValue objects for constants,
and so they can be used by the BytecodeGenerator without having to pass
the AstValueFactory to it, enabling construction off-thread.

BUG=v8:5203

Review-Url: https://codereview.chromium.org/2630343002
Cr-Original-Commit-Position: refs/heads/master@{#42381}
Committed: https://chromium.googlesource.com/v8/v8/+/d611496b8ed30af787d8668f96b400617c858508
Review-Url: https://codereview.chromium.org/2630343002
Cr-Commit-Position: refs/heads/master@{#42394}

A GC could happen when creating the Module string, which would cause the
JSModuleNamespace to be seen in an incomplete state. Instead make this
string a root object so that we don't need to allocate it during
NewJSModuleNamespace construction.

BUG=v8:1569

Review-Url: https://codereview.chromium.org/2631223002
Cr-Commit-Position: refs/heads/master@{#42393}

BUG=chromium:667678
NOTRY=true
TBR=titzer@chromium.org,bradnelson@chromium.org

Review-Url: https://codereview.chromium.org/2633313002
Cr-Commit-Position: refs/heads/master@{#42392}

R=jochen@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2637923002
Cr-Commit-Position: refs/heads/master@{#42391}

In V8, we always want the pointer alignment to be left, i.e. "Foo* foo"
instead of "Foo *foo".

R=jochen@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2631183002
Cr-Commit-Position: refs/heads/master@{#42390}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/9a3fba5..f55127d

Rolling v8/third_party/catapult: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+log/95b3e83..143ba4d

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

Review-Url: https://codereview.chromium.org/2634223002
Cr-Commit-Position: refs/heads/master@{#42389}

KillFields of an object should remove its cache from all the fields.
Currently, the cache in the front field is kept which is not expected.
This patch fixes it.

Review-Url: https://codereview.chromium.org/2618273002
Cr-Commit-Position: refs/heads/master@{#42388}

RotleftAndMask32 is not efficient on s390

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

Review-Url: https://codereview.chromium.org/2638813002
Cr-Commit-Position: refs/heads/master@{#42387}

BUG=chromium:673246
NOTRY=true

Review-Url: https://codereview.chromium.org/2635923002
Cr-Commit-Position: refs/heads/master@{#42386}

- Adds vmin, vmax for FP and integer vectors, both signed and unsigned.
- Regularizes switching logic in disasm and simulator for special codes
4 and 6.
- Factors vrecpe, vrsqrte, vrecps, vrsqrts into helper fns.

LOG=N
BUG=v8:4124

Review-Url: https://codereview.chromium.org/2623993006
Cr-Commit-Position: refs/heads/master@{#42385}

R=titzer@chromium.org
BUG=v8:5840

Review-Url: https://codereview.chromium.org/2633153002
Cr-Commit-Position: refs/heads/master@{#42384}

BUG=v8:5829

patch from issue 2634493004 at patchset 20001 (http://crrev.com/2634493004#ps20001)

Review-Url: https://codereview.chromium.org/2634033003
Cr-Commit-Position: refs/heads/master@{#42383}

Revert of [Parser] Introduce AstStringConstants to share constants across AstValueFactory (patchset #4 id:80001 of https://codereview.chromium.org/2630343002/ )

Reason for revert:
Seems to break modules-namespace2 on gcstress.

Original issue's description:
> [Parser] Introduce AstStringConstants to share constants across AstValueFactory
>
> Creates an AstStringConstants container which pre-initializes the
> string constants used by AstValueFactory. This ensures that all
> AstValueFactories will produce the same AstValue objects for constants,
> and so they can be used by the BytecodeGenerator without having to pass
> the AstValueFactory to it, enabling construction off-thread.
>
> BUG=v8:5203
>
> Review-Url: https://codereview.chromium.org/2630343002
> Cr-Commit-Position: refs/heads/master@{#42381}
> Committed: https://chromium.googlesource.com/v8/v8/+/d611496b8ed30af787d8668f96b400617c858508

TBR=ahaas@chromium.org,marja@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5203

Review-Url: https://codereview.chromium.org/2638783002
Cr-Commit-Position: refs/heads/master@{#42382}

Creates an AstStringConstants container which pre-initializes the
string constants used by AstValueFactory. This ensures that all
AstValueFactories will produce the same AstValue objects for constants,
and so they can be used by the BytecodeGenerator without having to pass
the AstValueFactory to it, enabling construction off-thread.

BUG=v8:5203

Review-Url: https://codereview.chromium.org/2630343002
Cr-Commit-Position: refs/heads/master@{#42381}

Our .clang-format is derived on the Google style, which sets
PointerAlignment to left (e.g. "Type* name"), but sets
DerivePointerAlignment to true. Once we started with the wrong style,
this made all new code in wasm-debug.cc use PointerAlignment=right,
resulting in lots of code using the wrong style.

For this CL, I ran
clang-format -style="{DerivePointerAlignment: false, BasedOnStyle: \
  Google}" -i src/wasm/wasm-debug.cc

R=titzer@chromium.org

Review-Url: https://codereview.chromium.org/2635003002
Cr-Commit-Position: refs/heads/master@{#42380}

R=titzer@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2625133005
Cr-Commit-Position: refs/heads/master@{#42379}

BUG=

Review-Url: https://codereview.chromium.org/2187383002
Cr-Commit-Position: refs/heads/master@{#42378}

BUG=v8:5832

Review-Url: https://codereview.chromium.org/2627783008
Cr-Commit-Position: refs/heads/master@{#42377}

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review-Url: https://codereview.chromium.org/2636893002
Cr-Commit-Position: refs/heads/master@{#42376}

TBR=tebbi@chromium.org
BUG=chromium:679841

Review-Url: https://codereview.chromium.org/2631163002
Cr-Commit-Position: refs/heads/master@{#42375}

Remove now obsolete constants (see https://chromium.googlesource.com/v8/v8/+/8f0bf07b504e8bb27ef3703388c4c0699670331f)
from postmortem metadata generator.

BUG=

Review-Url: https://codereview.chromium.org/2636863004
Cr-Commit-Position: refs/heads/master@{#42374}

third_party/inspector_protocol is tracked in git and ignoring it causes
problems if the tree is copied to another git repository (e.g. Node.js)
Similarly, third_party/binutils has some files checked in. This adds a
.gitignore file in this directory (same as Chromium).

R=franzih@chromium.org,ofrobots@google.com,machenbach@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2635483002
Cr-Commit-Position: refs/heads/master@{#42373}

R=titzer@chromium.org
BUG=v8:5818

Review-Url: https://codereview.chromium.org/2637703004
Cr-Commit-Position: refs/heads/master@{#42372}

Continuation of:
https://codereview.chromium.org/2620343005/

This removes usage of metadata files entirely. Instead we extract
the instrumentation about source files from the test cases.

This also adds extra output of the original source file in the
detailed failure text for easier debugging. The hashes alone
made it hard to reason.

BUG=chromium:673246
NOTRY=true
TBR=tandrii@chromium.org,mbarbella@chromium.org

Review-Url: https://codereview.chromium.org/2634743004
Cr-Commit-Position: refs/heads/master@{#42371}

R=titzer@chromium.org
BUG=680833

Review-Url: https://codereview.chromium.org/2634963002
Cr-Commit-Position: refs/heads/master@{#42370}

... and ensure that we do a full store when we overwrite uninitialized values.

This cleanup is necessary for checking that constant field tracking works as expected (once landed).

BUG=v8:5495

Review-Url: https://codereview.chromium.org/2631123002
Cr-Commit-Position: refs/heads/master@{#42369}

- Generalize the sloppy block function data structures to allow
  PreParser adding and hoisting sloppy block funcs.
- This completes PreParser scope analysis.

BUG=v8:5501, v8:5516
R=verwaest@chromium.org

Review-Url: https://codereview.chromium.org/2636543002
Cr-Commit-Position: refs/heads/master@{#42368}

Adds checks to ensure that AST rewriting only runs for top-level (or eval)
code, that for these cases it runs on the main thread, and that for
non-top-level code it can safely be called off-thread.

BUG=v8:5832

Review-Url: https://codereview.chromium.org/2630563002
Cr-Commit-Position: refs/heads/master@{#42367}

Now we can add a constness bit to the PropertyDetails.

BUG=v8:5495

Review-Url: https://codereview.chromium.org/2629423002
Cr-Commit-Position: refs/heads/master@{#42366}

BUG=chromium:679378
R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2634953002
Cr-Commit-Position: refs/heads/master@{#42365}

R=tebbi@chromium.org
BUG=chromium:679841

Review-Url: https://codereview.chromium.org/2638733002
Cr-Commit-Position: refs/heads/master@{#42364}

Without the end opcode at the end of a function nearly every fuzzer
input would be invalid and test nothing.

R=titzer@chromium.org

Review-Url: https://codereview.chromium.org/2634943002
Cr-Commit-Position: refs/heads/master@{#42363}

Moves constant element/property array building to be deferred for
igition and on-demand for the other compilers, and splits off the
object/array literal depth/flag initialisation from the array building.

BUG=v8:5832

Review-Url: https://codereview.chromium.org/2625873009
Cr-Commit-Position: refs/heads/master@{#42362}

BUG=v8:5215
R=rmcilroy@chromium.org,hpayer@chromium.org,vogelheim@chromium.org,marja@chromium.org

Review-Url: https://codereview.chromium.org/2625413004
Cr-Commit-Position: refs/heads/master@{#42361}

BUG=v8:5495

Review-Url: https://codereview.chromium.org/2628323003
Cr-Commit-Position: refs/heads/master@{#42360}

The special treatment is not required anymore because the wasm spec
changed and NaNs do not have to be preserved anymore. In addition, it
may introduce non-determinism which confused the fuzzers.

R=titzer@chromium.org
BUG=chromium:681033

Review-Url: https://codereview.chromium.org/2630293002
Cr-Commit-Position: refs/heads/master@{#42359}

BUG=

Review-Url: https://codereview.chromium.org/2398993003
Cr-Commit-Position: refs/heads/master@{#42358}

src/ast/scopeinfo.cc -> src/objects/scope-info.cc

BUG=v8:5402

Review-Url: https://codereview.chromium.org/2637793002
Cr-Commit-Position: refs/heads/master@{#42357}

BUG=chromium:663750,chromium:662907,chromium:663340,chromium:666308,chromium:669017
NOTRY=true
TBR=jarin@chromium.org, bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2632153002
Cr-Commit-Position: refs/heads/master@{#42356}

BUG=5823

R=bradnelson@chromium.org

Review-Url: https://codereview.chromium.org/2636803002
Cr-Commit-Position: refs/heads/master@{#42355}