Revert of Blink-compatible serialization of arrays, both dense and sparse. (patchset #6 id:100001 of https://codereview.chromium.org/2259633002/ )

Reason for revert:
Broke MIPS compile due to an uninitialization warning:

https://build.chromium.org/p/client.v8.ports/builders/V8%20Mips%20-%20builder/builds/3110/steps/compile/logs/stdio

Original issue's description:
> Blink-compatible serialization of arrays, both dense and sparse.
>
> The current "dense" format is not expressive enough to distinguish between
> an element that is not defined and one that has the value "undefined",
> but in this CL the existing behaviour of Blink is used for such cases.
> Format changes to fix these issues could be made later on.
>
> Not included in this CL is compatibility with version 0 arrays.
> Those will be implemented in a separate CL.
>
> BUG=chromium:148757
>
> Committed: https://crrev.com/2e000127df2e88e31d352ef70af397741d1f2298
> Cr-Commit-Position: refs/heads/master@{#38729}

TBR=jkummerow@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:148757

Review-Url: https://codereview.chromium.org/2255313002
Cr-Commit-Position: refs/heads/master@{#38730}

The current "dense" format is not expressive enough to distinguish between
an element that is not defined and one that has the value "undefined",
but in this CL the existing behaviour of Blink is used for such cases.
Format changes to fix these issues could be made later on.

Not included in this CL is compatibility with version 0 arrays.
Those will be implemented in a separate CL.

BUG=chromium:148757

Review-Url: https://codereview.chromium.org/2259633002
Cr-Commit-Position: refs/heads/master@{#38729}

BUG=

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

Review-Url: https://codereview.chromium.org/2242223002
Cr-Commit-Position: refs/heads/master@{#38728}

Revert of [Interpreter] Introduce InterpreterCompilationJob (patchset #9 id:180001 of https://codereview.chromium.org/2240463002/ )

Reason for revert:
Revert again...

Original issue's description:
> [Interpreter] Introduce InterpreterCompilationJob
>
> Adds InterpreterCompilationJob as a sub-class of
> CompilationJob, to enable off-thread bytecode
> generation. Currently only used in
> Interpreter::MakeBytecode.
>
> As part of this change, CompilationJob is modified
> to make it less specific to optimized compilation,
> renaming the phases as follows:
>  - CreateGraph -> PrepareJob
>  - OptimizeGraph -> ExecuteJob
>  - GenerateCode -> FinalizeJob
>
> RegisterWeakObjectsInOptimizedCode is also moved out
> of CompilationJob and instead becomes a static function
> on Compiler.
>
> BUG=v8:5203
>
> Committed: https://crrev.com/1fb6a7e697e8bc5b4af51647553741f966e00cdc
> Committed: https://crrev.com/785990e9fc0dd9a9d963d25d0bed2909165e4ca9
> Committed: https://crrev.com/d7c6195c4c5cdc080caa74dfe2ae9ecab69bea73
> Cr-Original-Original-Commit-Position: refs/heads/master@{#38662}
> Cr-Original-Commit-Position: refs/heads/master@{#38668}
> Cr-Commit-Position: refs/heads/master@{#38725}

TBR=mstarzinger@chromium.org,jkummerow@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/2260583002
Cr-Commit-Position: refs/heads/master@{#38727}

One more bytecode to pass info through to TurboFan.

BUG=v8:4280
LOG=n

Review-Url: https://codereview.chromium.org/2260473003
Cr-Commit-Position: refs/heads/master@{#38726}

Adds InterpreterCompilationJob as a sub-class of
CompilationJob, to enable off-thread bytecode
generation. Currently only used in
Interpreter::MakeBytecode.

As part of this change, CompilationJob is modified
to make it less specific to optimized compilation,
renaming the phases as follows:
 - CreateGraph -> PrepareJob
 - OptimizeGraph -> ExecuteJob
 - GenerateCode -> FinalizeJob

RegisterWeakObjectsInOptimizedCode is also moved out
of CompilationJob and instead becomes a static function
on Compiler.

BUG=v8:5203

Committed: https://crrev.com/1fb6a7e697e8bc5b4af51647553741f966e00cdc
Committed: https://crrev.com/785990e9fc0dd9a9d963d25d0bed2909165e4ca9
Review-Url: https://codereview.chromium.org/2240463002
Cr-Original-Original-Commit-Position: refs/heads/master@{#38662}
Cr-Original-Commit-Position: refs/heads/master@{#38668}
Cr-Commit-Position: refs/heads/master@{#38725}

Use bool is_strict_ to encode language_mode in scopes using a single bit.

BUG=

Review-Url: https://codereview.chromium.org/2261463002
Cr-Commit-Position: refs/heads/master@{#38724}

Generates a JSCreateWithContext node for TurboFan to optimize.

BUG=v8:4280
LOG=n

Review-Url: https://codereview.chromium.org/2255793002
Cr-Commit-Position: refs/heads/master@{#38723}

NOTRY=true

Review-Url: https://codereview.chromium.org/2260543002
Cr-Commit-Position: refs/heads/master@{#38722}

V8 doesn't build on Ubuntu 16.04 (with GCC 5.3). Seems to be
a known regression on newer GCC version. It emits incorrect
"error: array subscript is above array bounds" message. Adding
explicit array bound check fixes the issue.

R=hablich@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2256113002
Cr-Commit-Position: refs/heads/master@{#38721}

The machine types were incorrect for the runtime function and argument
count parameters. The latter was introduced in 3e2085eb, while the
former seems to always have been wrong.

This was not an issue so far because GetRuntimeCallDescriptor was only
called after the representation selection phase and thus the machine
type was ignored.

R=jarin@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2250863004
Cr-Commit-Position: refs/heads/master@{#38720}

Initialize Code::builtin_index to -1. This ensures that it is
non-negative for builtin code objects (since it is set by
Builtins::SetUp), and -1 for everything else.

BUG=

Review-Url: https://codereview.chromium.org/2254193002
Cr-Commit-Position: refs/heads/master@{#38719}

As required by the spec, ToJS now throws a TypeError fit I64 values
instead of truncating the I64 value to I32. To throw a TypeError I
introduced a new runtime function because the existing
Runtime::kThrowWasmError does not throw a TypeError. Since we have calls
to two runtime functions now, and an additional one is needed for stack
checks, I extracted the call to runtime functions into a helper function.

R=titzer@chromium.org

TEST=mjsunit/wasm/ffi-error.js:I64InSignatureThrows

Review-Url: https://codereview.chromium.org/2254803002
Cr-Commit-Position: refs/heads/master@{#38718}

Adds support for dumping the stack on Windows. Also enables in-process
stack dumping in d8 to dump the stack on exceptions and signals.

This CL changes the format of stack dumps from:
 1: V8_Fatal
 2: 0x1ac6ba5
 3: v8::internal::interpreter::BytecodeGenerator::Visit(v8::internal::AstNode*)
 4: v8::internal::interpreter::BytecodeGenerator::VisitForAccumulatorValue(v8::internal::Expression*)
 ...

To:
  ./out/x64.debug/d8(v8::base::debug::StackTrace::StackTrace()+0x1e) [0x1c6ee5e]
  ./out/x64.debug/d8() [0x1c6ede5]
  /lib/x86_64-linux-gnu/libpthread.so.0(+0x10330) [0x7fa01193e330]
  ./out/x64.debug/d8(v8::base::OS::Abort()+0x12) [0x1c6cea2]
  ./out/x64.debug/d8() [0x1c67538]
  ./out/x64.debug/d8() [0x1ac80b5]
  ./out/x64.debug/d8(v8::internal::interpreter::BytecodeGenerator
::Visit(v8::internal::AstNode*)+0x3cb) [0x1ac323b]
  ./out/x64.debug/d8(v8::internal::interpreter::BytecodeGenerator
::VisitForAccumulatorValue(v8::internal::Expression*)+0x40) [0x1ac2570]

Review-Url: https://codereview.chromium.org/2248393002
Cr-Commit-Position: refs/heads/master@{#38717}

Removes all accesses to the Isolate during bytecode generation and the
bytecode pipeline. Adds an DisallowIsolateAccessScope which is used to
enforce this invariant within the BytecodeGenerator.

BUG=v8:5203

Review-Url: https://codereview.chromium.org/2242193002
Cr-Commit-Position: refs/heads/master@{#38716}

- Avoid unmapping of new space pages while sweeping using a delayed list that
  gets emptied upon the next call to the unmapper.

BUG=chromium:628984
R=hpayer@chromium.org

This reverts commit 4a1f2807.

Review-Url: https://codereview.chromium.org/2255153002
Cr-Commit-Position: refs/heads/master@{#38715}

Revert of There are only 2 language modes, not 3 (patchset #4 id:60001 of https://codereview.chromium.org/2250703003/ )

Reason for revert:
Breaks ARM and MIPS builds e.g. https://build.chromium.org/p/client.v8.ports/builders/V8%20Arm%20-%20debug%20builder/builds/2479/steps/compile/logs/stdio

Original issue's description:
> There are only 2 language modes, not 3
>
> BUG=
>
> Committed: https://crrev.com/39764ba293412adde99a77a66d0750695312e006
> Cr-Commit-Position: refs/heads/master@{#38704}

TBR=neis@chromium.org,marja@chromium.org,verwaest@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/2257133002
Cr-Commit-Position: refs/heads/master@{#38714}

Revert of Replace LANGUAGE_END with LAST_LANGUAGE_MODE (patchset #1 id:1 of https://codereview.chromium.org/2257703003/ )

Reason for revert:
Needed to land revert https://codereview.chromium.org/2257133002/

Original issue's description:
> Replace LANGUAGE_END with LAST_LANGUAGE_MODE
>
> BUG=
>
> Committed: https://crrev.com/9324efca85710ebb14f21ef8476447e21cbe3f35
> Cr-Commit-Position: refs/heads/master@{#38707}

TBR=neis@chromium.org,marja@chromium.org,verwaest@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/2259853002
Cr-Commit-Position: refs/heads/master@{#38713}

Revert of [heap] Don't unmap new space pages while sweeping is active (patchset #4 id:80001 of https://codereview.chromium.org/2250423002/ )

Reason for revert:
The barrier in newspace is still needed.

Original issue's description:
> [heap] Don't unmap new space pages while sweeping is active
>
> - The barrier for scavenge only checked for whether new space pages were swept.
>   This is not enough as a concurrent task could still hang right before trying to
>   lock the page for sweeping. Remove the barrier completely.
> - Avoid unmapping of new space pages while sweeping using a delayed list that
>   gets emptied upon the next call to the unmapper.
>
> BUG=chromium:628984
> R=hpayer@chromium.org
>
> Committed: https://crrev.com/982b399423e6bd941cabb2b825031cd8d5eb4980
> Cr-Commit-Position: refs/heads/master@{#38710}

TBR=hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:628984

Review-Url: https://codereview.chromium.org/2244233007
Cr-Commit-Position: refs/heads/master@{#38712}

[turbofan/x64] Load word64 followed by a shift right 32 -> load (and sign-extend if necessary) high 32bit.

We were missing this optimization in a few cases because TruncateInt64ToInt32 was also interfering.
Also removed the equivalent from simplified-lowering.cc, as the arm64 instruction selector has a similar optimization.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2252333002
Cr-Commit-Position: refs/heads/master@{#38711}

- The barrier for scavenge only checked for whether new space pages were swept.
  This is not enough as a concurrent task could still hang right before trying to
  lock the page for sweeping. Remove the barrier completely.
- Avoid unmapping of new space pages while sweeping using a delayed list that
  gets emptied upon the next call to the unmapper.

BUG=chromium:628984
R=hpayer@chromium.org

Review-Url: https://codereview.chromium.org/2250423002
Cr-Commit-Position: refs/heads/master@{#38710}

This fixes canonicalization of {SharedFunctionInfo} objects in the
{Compiler::GetSharedFunctionInfo} method when bytecode is preserved.
Eager compilation is only triggered when no code is present.

R=rmcilroy@chromium.org
TEST=mjsunit/regress/regress-crbug-638551
BUG=chromium:638551

Review-Url: https://codereview.chromium.org/2245263006
Cr-Commit-Position: refs/heads/master@{#38709}

Rebuilding (after touching certain files) is crazy slow because
includes are out of control.

Fixing it:
- Don't include stuff in headers unless necessary.
- Include the stuff you need, not some other stuff that happens to include the
stuff you need.

BUG=v8:5294

Review-Url: https://codereview.chromium.org/2246203005
Cr-Commit-Position: refs/heads/master@{#38708}

BUG=

Review-Url: https://codereview.chromium.org/2257703003
Cr-Commit-Position: refs/heads/master@{#38707}

BUG=chromium:630386

Review-Url: https://codereview.chromium.org/2247303005
Cr-Commit-Position: refs/heads/master@{#38706}

R=epertoso@chromium.org

Review-Url: https://codereview.chromium.org/2259613003
Cr-Commit-Position: refs/heads/master@{#38705}

BUG=

Review-Url: https://codereview.chromium.org/2250703003
Cr-Commit-Position: refs/heads/master@{#38704}

This moves the module_descriptor_ field to that subclass, as well as other module-only methods.

BUG=v8:5209

Review-Url: https://codereview.chromium.org/2252223002
Cr-Commit-Position: refs/heads/master@{#38703}

BUG=chromium:468240

Review-Url: https://codereview.chromium.org/2245133004
Cr-Commit-Position: refs/heads/master@{#38702}

TBR=littledan@chromium.org
NOTRY=true
BUG=

Review-Url: https://codereview.chromium.org/2259793002
Cr-Commit-Position: refs/heads/master@{#38701}

Revert of Use a custom Struct for stack trace storage (patchset #4 id:60001 of https://codereview.chromium.org/2230953002/ )

Reason for revert:
Performance regressions in Gameboy, Life, CodeLoad and others. See crbug.com/638210.

Original issue's description:
> Refactor data structures for simple stack traces
>
> Simple stack traces are captured through Isolate::CaptureSimpleStackTrace.
> Captured frames are stored in a FixedArray, which in turn is stored as a
> property (using a private symbol) on the error object itself. Actual formatting
> of the textual stack trace is done lazily when the user reads the stack
> property of the error object.
>
> This would involve many conversions back and forth between index-encoded raw
> data (receiver, function, offset and code), JS CallSite objects, and C++
> CallSite objects.
>
> This commit refactors the C++ CallSite class into a Struct class called
> StackTraceFrame, which is the new single point of truth frame information.
> Isolate::CaptureSimpleStackTrace stores an array of StackTraceFrames, and JS
> CallSite objects (now created only when the user specifies custom stack trace
> formatting through Error.prepareStackTrace) internally only store a reference
> to a StackTraceFrame.
>
> BUG=
>
> Committed: https://crrev.com/b4c1aefb9c369f1a33a6ca94a5de9b06ea4bf5c4
> Cr-Commit-Position: refs/heads/master@{#38645}

TBR=yangguo@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=

Review-Url: https://codereview.chromium.org/2252783007
Cr-Commit-Position: refs/heads/master@{#38700}

They were not using it for anything. Block and FunctionLiteral need the
Zone, others don't.

BUG=

Review-Url: https://codereview.chromium.org/2249783004
Cr-Commit-Position: refs/heads/master@{#38699}

Ensures SMI values have SMI type even if they have a dot (e.g., 1.0).
Adds SMI_WITH_DOT type to maintain this.

BUG=chromium:638134

Review-Url: https://codereview.chromium.org/2248693005
Cr-Commit-Position: refs/heads/master@{#38698}

Fixed ExtraICStateField which used 1 bits more than were available
BUG=

Review-Url: https://codereview.chromium.org/2258473002
Cr-Commit-Position: refs/heads/master@{#38697}

This fixes the case where a module is instantiated twice via the same
closure when in the meantime another closure has destroyed and removed
the WASM data attached to the SharedFunctionInfo.

R=bradnelson@chromium.org
TEST=mjsunit/asm/asm-validation
BUG=v8:4203

Review-Url: https://codereview.chromium.org/2253613004
Cr-Commit-Position: refs/heads/master@{#38696}

Rolling v8/build to 388e658306466650ee4ad4b3d6d7b230c9cad64c

Rolling v8/third_party/icu to 2341038bf72869a5683a893a2b319a48ffec7f62

Rolling v8/tools/mb to f3036b2e34d746db3635afa0841f51019b2b8d38

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

Review-Url: https://codereview.chromium.org/2259703002
Cr-Commit-Position: refs/heads/master@{#38695}

Ensure wasm binaries intended to be used in hosts of v8, such as
chromium, are up to date.

See https://codereview.chromium.org/2255673003/

BUG=v8:5072

Review-Url: https://codereview.chromium.org/2259693002
Cr-Commit-Position: refs/heads/master@{#38694}

BUG=

Review-Url: https://codereview.chromium.org/2250913002
Cr-Commit-Position: refs/heads/master@{#38693}

Language tags with Unicode extensions can have multiple subtags
for a key (e.g. -ca-ismalic-civil has 'islamic-civi' for 'ca').

BUG=v8:4749
TEST=intl/date-format/calendar-with-multiple-type-subtags.js

Review-Url: https://codereview.chromium.org/2248563003
Cr-Commit-Position: refs/heads/master@{#38692}

Reland of Amends the TypedArray constructor to use the path for primitives for all (patchset #1 id:1 of https://codereview.chromium.org/2120763002/ )

Reason for revert:
WebGL tests have been updated and rolled (at https://codereview.chromium.org/2227023002), so this should no longer fail outdated tests.

Original issue's description:
> Revert of Amends the TypedArray constructor to use the path for primitives for all (patchset #4 id:60001 of https://codereview.chromium.org/2096873002/ )
>
> Reason for revert:
> Speculative revert to unblock roll https://codereview.chromium.org/2114113002/
>
> Original issue's description:
> > Amends the TypedArray constructor to use the path for primitives for all
> > types of primitives, not just undefined, booleans, numbers, and strings.
> > (The missing cases were null and Symbol.) This is required by the
> > specification, and there are test262 tests which we were failing due to
> > this bug.
> >
> > BUG=v8:5124
> >
> > Committed: https://crrev.com/f788bd9cce19815cba746e47bb65abfe25c16208
> > Committed: https://crrev.com/f772c22cd1c492aa0235a8e6012d0386146d2eb2
> > Cr-Original-Commit-Position: refs/heads/master@{#37234}
> > Cr-Commit-Position: refs/heads/master@{#37407}
>
> TBR=littledan@chromium.org,bakkot@google.com
> NOTREECHECKS=true
> BUG=v8:5124
>
> Committed: https://crrev.com/9c0aef52fa672db856ebfac7f4bdcd7d7b103663
> Cr-Commit-Position: refs/heads/master@{#37487}

TBR=littledan@chromium.org,hablich@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:5124

Review-Url: https://codereview.chromium.org/2255543002
Cr-Commit-Position: refs/heads/master@{#38691}