Also, clarify comments about how semaphores work

BUG=none
R=mlippautz@chromium.org

Review-Url: https://codereview.chromium.org/2270703002
Cr-Commit-Position: refs/heads/master@{#38816}

This makes sure the deoptimizer picks bytecode prepared for debugging
when materializing an interpreted frame if one is available. This is
normally done by the interpreter entry trampoline and hence needs to be
replicated by the deoptimizer.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2271443003
Cr-Commit-Position: refs/heads/master@{#38815}

Even though there is no scope chain, just the empty outer scope.

R=marja@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2273553003
Cr-Commit-Position: refs/heads/master@{#38814}

This patch const-qualifies some methods of ParserBase.
It also unqualifies some methods of Parser and Preparser.
The reason for the latter is that, in principle, the methods
of AstNodeFactory should be allowed to change the factory's
state, therefore should not be const and should not be used
from const-qualified parser/pre-parser methods.

R=adamk@chromium.org, marja@chromium.org
BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2263973003
Cr-Commit-Position: refs/heads/master@{#38813}

This avoids checking for outer_scope == nullptr in Scope::Scope

BUG=v8:5209

Review-Url: https://codereview.chromium.org/2266973002
Cr-Commit-Position: refs/heads/master@{#38812}

  Port 28e3467a (r38361)

  original commit message:
    Adding new methods to the code stub assembler and interpreter
    assembler to combine loading and untagging SMIs, so that on 64-bit
    architectures we can avoid loading the full 64 bits and load the
    32 interesting bits directly instead.

BUG=

Review-Url: https://codereview.chromium.org/2265043002
Cr-Commit-Position: refs/heads/master@{#38811}

This avoids needing to allocate a zonelist on the fly later, sorting variables_, for which we also need to keep track of order in the hashmap.

In a later phase we can make sure that Variable is always uniquely in either of params_, temps_ and ordered_variables_. In that case we can use a linked list through Variable.

BUG=v8:5209

Review-Url: https://codereview.chromium.org/2264053003
Cr-Commit-Position: refs/heads/master@{#38810}

This changes the compilation pipeline so that mixed stacks are allowed
when bytecode is preserved. This means there can be activations of both,
"baseline" as well as "unoptimized" code active on the stack at the same
time for any single given function.

R=rmcilroy@chromium.org
BUG=v8:4280

Review-Url: https://codereview.chromium.org/2267693002
Cr-Commit-Position: refs/heads/master@{#38809}

BUG=chromium:570268,chromium:621829

Review-Url: https://codereview.chromium.org/2233683002
Cr-Commit-Position: refs/heads/master@{#38808}

Clone the indirect function table(s) when instantiating.

This is in preparation to avoiding having a compiled code
template.

BUG=

Review-Url: https://codereview.chromium.org/2273483002
Cr-Commit-Position: refs/heads/master@{#38807}

Make use of %IsAsmWasmCode in place of Wasm.instantiateModuleFromAsm,
in order to reduce the surface area of the Wasm object,
and to focus on testing asm.js coming in via the parser.

Ignore extra CONST_LEGACY assignment introduced by the parser
when modules have the form:
(function Foo(a, b, c) {..});
This requires both a validator and AsmWasmBuilder change.

Move stdlib use collection to import time,
to reject modules that import a function, even if not used.

BUG= https://bugs.chromium.org/p/v8/issues/detail?id=4203
LOG=N
R=jpp@chromium.org,titzer@chromium.org

Review-Url: https://codereview.chromium.org/2264913002
Cr-Commit-Position: refs/heads/master@{#38806}

Rolling v8/build to 59daf502c36f20b5c9292f4bd9af85791f8a5884

Rolling v8/third_party/WebKit/Source/platform/inspector_protocol to 547960151fb364dd9a382fa79ffc9abfb184e3d1

Rolling v8/tools/clang to 3afb04a8153e40ff00f9eaa14337851c3ab4a368

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

Review-Url: https://codereview.chromium.org/2264413002
Cr-Commit-Position: refs/heads/master@{#38805}

This flag was shipped on in 52, so it's due for removal. The patch includes
removing the deprecated and unused-in-Blink API Promise::Chain, and many
test updates.

R=adamk@chromium.org
BUG=v8:4633

Review-Url: https://codereview.chromium.org/2267033002
Cr-Commit-Position: refs/heads/master@{#38804}

Port 2027b0be

Original commit message:

    The new operators are implemented similar to the Float64(Max|Min) which
    already exist. The purpose of the new operators is the implementation
    of the F32Max and F32Min instructions in WebAssembly.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2263383002
Cr-Commit-Position: refs/heads/master@{#38803}

The following code was previously accepted:

  async function f() {
    let g = (await) => {};
  }

But per the spec, using 'await' is disallowed in arrow parameters
by an early error rule (just as 'yield' is disallowed in arrow
params inside generators).

There was special logic in ParseUnaryExpression which seems to have been
there only to allow that case. Having removed it, we get a SyntaxError in
the right cases anyway when ParseUnaryExpression chokes on whatever
illegal token follows 'await' in the cases this code previously handled.

Also removes the unnecessary AsyncBindingPatternProduction enum value.

R=caitp@igalia.com, littledan@chromium.org
BUG=v8:4483

Review-Url: https://codereview.chromium.org/2258313002
Cr-Commit-Position: refs/heads/master@{#38802}

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

Review-Url: https://codereview.chromium.org/2265073003
Cr-Commit-Position: refs/heads/master@{#38801}

Includes fast paths in the runtime for
DictionaryElementsAccessor, FastSmiOrObjectElementsAccessor,
FastDoubleElementsAccessor, TypedElementsAccessor, and
SloppyArgumentsElementsAccessor.

BUG=

Review-Url: https://codereview.chromium.org/2232063002
Cr-Commit-Position: refs/heads/master@{#38800}

Port 4598d913

Original commit message:

    This fixes the self-healing mechanism for closures in the interpreter
    entry trampoline not that bytecode can be preserved even when baseline
    code is already available.

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

BUG=chromium:638225
LOG=N

Review-Url: https://codereview.chromium.org/2265193002
Cr-Commit-Position: refs/heads/master@{#38799}

Also lots of cleanup around the checking for 'await' as an identifier
throughout the parser and preparser.

R=caitp@igalia.com, littledan@chromium.org
BUG=v8:4483,v8:5298

Review-Url: https://codereview.chromium.org/2267493002
Cr-Commit-Position: refs/heads/master@{#38798}

- Now "inner_scope_uses_eval_" is also set of scopes that call eval themselves.
- AllowLazyParsing doesn't check force_eager_compilation_ anymore.
- Both inner_scope_uses_eval_ and force_eager_compilation_ are propagated
  outwards immediately when set.

BUG=v8:5209

Review-Url: https://codereview.chromium.org/2269603002
Cr-Commit-Position: refs/heads/master@{#38797}

Check remaining asm.js stdlib functions for validitity at instatiation.

Fail when a member is referenced, even if not used.

BUG= https://bugs.chromium.org/p/v8/issues/detail?id=4203
LOG=N
R=jpp@chromium.org,titzer@chromium.org

Review-Url: https://codereview.chromium.org/2267633002
Cr-Commit-Position: refs/heads/master@{#38796}

BUG=chromium:148757

Review-Url: https://codereview.chromium.org/2255973005
Cr-Commit-Position: refs/heads/master@{#38795}

(40B -> 32B, due to alignment rules. Should be neutral on 32b platforms.)

BUG=v8:4947

Review-Url: https://codereview.chromium.org/2256183005
Cr-Commit-Position: refs/heads/master@{#38794}

When doing a component build, some test binaries link against the object
files directly, bypassing the components. This results, however, and
rightly so, in linker warnings. In gyp, we just suppressed them. During
the transition to gn, this was dropped for two binaries.

Here I add the suppressions back in.

Long term, we should either change the tests to go through the public
API, or export the required symbols.

BUG=chromium:633688
R=jkummerow@chromium.org

Review-Url: https://codereview.chromium.org/2261123003
Cr-Commit-Position: refs/heads/master@{#38793}

BUG=v8:5264, v8:5268
R=mstarzinger@chromium.org, bmeurer@chromium.org, epertoso@chromium.org

Review-Url: https://codereview.chromium.org/2247353005
Cr-Commit-Position: refs/heads/master@{#38792}

Now that -0.0 and 0.0 are ordered by Float64Max and Float64Min, these
two operator are both associative and commutative for all numbers. The
operators would not be associative and commutative for NaNs, but
neither JavaScript nor WebAssembly distinguish between NaNs nowadays.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2263163002
Cr-Commit-Position: refs/heads/master@{#38791}

CallPrinter currently has only a single use, namely to print the call
site when throwing CalledNonCallable (ConstructedNonConstructable)
errors. This ensures that unicode call sites such as "あいう"() are
printed correctly by using an IncrementalStringBuilder internally.

BUG=637167

Review-Url: https://codereview.chromium.org/2265073002
Cr-Commit-Position: refs/heads/master@{#38790}

For PPC/s390 the case is missing where reference=attachedreference
how_to_code=kFromCode and  where_to_point=kStartOfObject. On PPC/s390
IsCodedSpecially always return true, hence how_to_code will not be a
straight pointer.
This should also fix the similar issue on mipsel.
The testcase was added as part of https://codereview.chromium.org/2205973003/

R=mtrofin@chromium.org, yangguo@chromium.org, titzer@chromium.org

BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2247093002
Cr-Commit-Position: refs/heads/master@{#38789}

Disable inlining of Cpp to a direct CEntryStub call when a call would
require argument adaption, i.e. when argument adaption is enabled for
the given function and the actual argument count differs from the formal
parameter count.

This is intended to be a temporary fix until we either disable argument
adaption for all Cpp builtins or add adaption logic to inlined Cpp
builtins.

BUG=chromium:639752

Review-Url: https://codereview.chromium.org/2266893002
Cr-Commit-Position: refs/heads/master@{#38788}

Fix getter/setter typo so we use the correct object in DCHECK.

BUG=

Review-Url: https://codereview.chromium.org/2255713002
Cr-Commit-Position: refs/heads/master@{#38787}

BUG=v8:5209

Review-Url: https://codereview.chromium.org/2265903003
Cr-Commit-Position: refs/heads/master@{#38786}

NOTRY=true

Review-Url: https://codereview.chromium.org/2265053002
Cr-Commit-Position: refs/heads/master@{#38785}

The new operators are implemented similar to the Float64(Max|Min) which
already exist. The purpose of the new operators is the implementation
of the F32Max and F32Min instructions in WebAssembly.

R=titzer@chromium.org, v8-arm-ports@googlegroups.com, v8-mips-ports@googlegroups.com

Review-Url: https://codereview.chromium.org/2252863003
Cr-Commit-Position: refs/heads/master@{#38784}

BUG=

Review-Url: https://codereview.chromium.org/2255313006
Cr-Commit-Position: refs/heads/master@{#38783}

BUG=

Review-Url: https://codereview.chromium.org/2262153002
Cr-Commit-Position: refs/heads/master@{#38782}

In theory the flag could otherwise be set on a blockscope that might be finalized (removed) before PropagateScopeInfo can propagate the flag around. In that case we'd lose the flag.

BUG=v8:5209

Review-Url: https://codereview.chromium.org/2267683002
Cr-Commit-Position: refs/heads/master@{#38781}

Review-Url: https://codereview.chromium.org/2266813003
Cr-Commit-Position: refs/heads/master@{#38780}

This is the only user of outer_scope_calls_sloppy_eval. Inlining it simplifies scope analysis.

BUG=v8:5209

Review-Url: https://codereview.chromium.org/2263123002
Cr-Commit-Position: refs/heads/master@{#38779}

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
Review-Url: https://codereview.chromium.org/2240463002
Cr-Original-Original-Original-Commit-Position: refs/heads/master@{#38662}
Cr-Original-Original-Commit-Position: refs/heads/master@{#38668}
Cr-Original-Commit-Position: refs/heads/master@{#38725}
Cr-Commit-Position: refs/heads/master@{#38778}

This makes us able to get rid of dependencies to parser.h from places
which only need the ParseInfo, and also gets rid of the curious Parser
<-> Compiler circular dependency.

Also IWYUd where necessary.

BUG=

Review-Url: https://codereview.chromium.org/2268513002
Cr-Commit-Position: refs/heads/master@{#38777}