R=bradnelson@chromium.org, ahaas@chromium.org
LOG=Y
BUG=chromium:575372

Review URL: https://codereview.chromium.org/1573213002

Cr-Commit-Position: refs/heads/master@{#33366}

This became temporarily a big issue, because spreads are desugared
into do-expressions.  This patch fixes the problem with having
spreads as parameter initializers in arrow expressions, e.g., this
line would crash:

    [], ((x = [...[42]]) => x)();

R=rossberg@chromium.org
BUG=chromium:578038
LOG=N

Review URL: https://codereview.chromium.org/1581403007

Cr-Commit-Position: refs/heads/master@{#33365}

Review URL: https://codereview.chromium.org/1600353003

Cr-Commit-Position: refs/heads/master@{#33364}

In many places we over-specify runtime-calls by explicitly mentioning
again the argument count. Except for var-args runtime-functions we can
easily deduce this from the parameters in runtime.h.

BUG=

Review URL: https://codereview.chromium.org/1596293003

Cr-Commit-Position: refs/heads/master@{#33363}

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

Review URL: https://codereview.chromium.org/1603533002

Cr-Commit-Position: refs/heads/master@{#33362}

BUG=

Review URL: https://codereview.chromium.org/1593713002

Cr-Commit-Position: refs/heads/master@{#33361}

BUG=v8:4163,v8:4630
LOG=y

R=rossberg

Review URL: https://codereview.chromium.org/1590873002

Cr-Commit-Position: refs/heads/master@{#33360}

Proxy.

If a constructable Proxy changes the target's prototype during the
prototype lookup the target's initial map stays uninitialized half-way
during object construction.

LOG=n
BUG=chromium:578039

Review URL: https://codereview.chromium.org/1586203003

Cr-Commit-Position: refs/heads/master@{#33359}

BUG=chromium:571365
R=verwaest@chromium.org,neis@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1587633002

Cr-Commit-Position: refs/heads/master@{#33358}

Make ForInPrepare take a kRegTriple8 operand and ForInNext take kRegPair8
operand for cache state. This is to ensure that the cache state output of
ForInPrepare is in consecutive registers to allow us to deopt the
ForInPrepare node from TF->Ignition (to be done in a followup CL).

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1584813002

Cr-Commit-Position: refs/heads/master@{#33357}

R=bmeurer@chromium.org
BUG=chromium:578775
LOG=n

Review URL: https://codereview.chromium.org/1605483002

Cr-Commit-Position: refs/heads/master@{#33356}

Adds support for variable and function declarations in lookup slots to the
interpreter.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1583783003

Cr-Commit-Position: refs/heads/master@{#33355}

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1595403003

Cr-Commit-Position: refs/heads/master@{#33354}

This removes the need to pass in the current unoptimized code when
requesting optimized code for a function. Note that the notion of
unoptimized code becomes moot when optimizing from the interpreter
bytecode, hence the API should not encode such a dependency.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1588293005

Cr-Commit-Position: refs/heads/master@{#33353}

  port 84f8a506 (r33334)

  original commit message:
  Adds a ForInPrepare Runtime function which returns a triple of
  cache_type, cache_array and cache_length.

  This requires adding support to CEntryStub to call runtime functions
  which return a ObjectTriple - a struct containing three Object*
  pointers. Also did some cleanup of the x64 CEntryStub to avoid
  replicated code.

  Replaces the interpreter's use of the ad-hock InterpreterForInPrepare
  Runtime function with ForInPrepare in preparation for fixing deopt in
  BytecodeGraphBuilder for ForIn (which will be done in a followup CL).

  MIPS port contributed by Balazs Kilvady <balazs.kilvady@imgtec.com>.

BUG=

Review URL: https://codereview.chromium.org/1603493002

Cr-Commit-Position: refs/heads/master@{#33352}

  port e06f7d78 (r33347)

  original commit message:
  The new operator converts an int32 input to float32. If the input cannot
  be represented exactly in float32, the value is rounded using the
  round-ties-even rounding mode (the default rounding mode).

  I provide implementations of the new operator for x64, ia32, arm, arm64,
  mips, mips64, ppc, and ppc64.

BUG=

Review URL: https://codereview.chromium.org/1597403002

Cr-Commit-Position: refs/heads/master@{#33351}

The runtime function is no longer used and obsolete by now.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/1598113003

Cr-Commit-Position: refs/heads/master@{#33350}

We don't need to treat as "spills in deferred blocks" ranges that have
no spill range, or that have a spill operand.

Review URL: https://codereview.chromium.org/1597883002

Cr-Commit-Position: refs/heads/master@{#33349}

Rolling v8/tools/clang to 908392433b14b2ffe86bd1c791531816a65b7378

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

Review URL: https://codereview.chromium.org/1593213002

Cr-Commit-Position: refs/heads/master@{#33348}

The new operator converts an int32 input to float32. If the input cannot
be represented exactly in float32, the value is rounded using the
round-ties-even rounding mode (the default rounding mode).

I provide implementations of the new operator for x64, ia32, arm, arm64,
mips, mips64, ppc, and ppc64.

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

Review URL: https://codereview.chromium.org/1589363002

Cr-Commit-Position: refs/heads/master@{#33347}

The new operator converts a float32 input to int32 through truncation.
I provide implementations of the new operator for x64, ia32, arm,
arm64, mips, mips64, and x87. @v8-ppc-ports, can you please take care
of the ppc implementation?

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

Review URL: https://codereview.chromium.org/1583323004

Cr-Commit-Position: refs/heads/master@{#33346}

This may have made more sense in the old module design (where
"unification" was a thing), but as-is it's only used for a few
asserts in debug mode. These asserts don't make much sense inside
ModuleDescriptor; instead, as the modules implementation is fleshed
out, I expect the appropriate replacement asserts to show up at the
use of the ModuleDescriptor.

Review URL: https://codereview.chromium.org/1598433006

Cr-Commit-Position: refs/heads/master@{#33345}

This includes anonymous Function, Generator, and Class declarations when
preceded by 'export default'. Parsing only at the moment, nothing useful is
done with the parsed Function/ClassLiteral.

BUG=v8:1569
LOG=n

Review URL: https://codereview.chromium.org/1589173002

Cr-Commit-Position: refs/heads/master@{#33344}

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

Review URL: https://codereview.chromium.org/1590423002

Cr-Commit-Position: refs/heads/master@{#33343}

Port 84f8a506

Original commit message:
    Adds a ForInPrepare Runtime function which returns a triple of
    cache_type, cache_array and cache_length.

    This requires adding support to CEntryStub to call runtime functions
    which return a ObjectTriple - a struct containing three Object*
    pointers. Also did some cleanup of the x64 CEntryStub to avoid
    replicated code.

    Replaces the interpreter's use of the ad-hock InterpreterForInPrepare
    Runtime function with ForInPrepare in preparation for fixing deopt in
    BytecodeGraphBuilder for ForIn (which will be done in a followup CL).

R=rmcilroy@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1586153004

Cr-Commit-Position: refs/heads/master@{#33342}

Port c86f1897

Original commit message:
    When derived constructors return a non-object (or not undefined) we
    currently throw an exception directly in the callee context. This was
    achieved by desugaring the return statement for derived classes. To
    be spec compliamnt a separate ConstructStubForDerived is introduced.
    Instead of trowing directly, the desugared return statement inside
    a derived constructor only returns an integer to indicate an incompatible
    result.

R=cbruni@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:4509
LOG=n

Review URL: https://codereview.chromium.org/1595593002

Cr-Commit-Position: refs/heads/master@{#33341}

Port for https://codereview.chromium.org/1593553002/

Original commit message:
When derived constructors return a non-object (or not undefined) we
currently throw an exception directly in the callee context. This was
achieved by desugaring the return statement for derived classes. To
be spec compliamnt a separate ConstructStubForDerived is introduced.
Instead of trowing directly, the desugared return statement inside
a derived constructor only returns an integer to indicate an incompatible
result.

BUG=v8:4509
LOG=n

Review URL: https://codereview.chromium.org/1593603002

Cr-Commit-Position: refs/heads/master@{#33340}

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

Review URL: https://codereview.chromium.org/1589373002

Cr-Commit-Position: refs/heads/master@{#33339}

Cr-Commit-Position: refs/heads/master@{#33338}

BUG=v8:4280
LOG=N
TBR=machenbach@chromium.org
NOTRY=TRUE

Review URL: https://codereview.chromium.org/1584343006

Cr-Commit-Position: refs/heads/master@{#33337}

When derived constructors return a non-object (or not undefined) we
currently throw an exception directly in the callee context. This was
achieved by desugaring the return statement for derived classes. To
be spec compliamnt a separate ConstructStubForDerived is introduced.
Instead of trowing directly, the desugared return statement inside
a derived constructor only returns an integer to indicate an incompatible
result.

BUG=v8:4509
LOG=n

Review URL: https://codereview.chromium.org/1593553002

Cr-Commit-Position: refs/heads/master@{#33336}

R=mlippautz@chromium.org

Review URL: https://codereview.chromium.org/1583323005

Cr-Commit-Position: refs/heads/master@{#33335}

Adds a ForInPrepare Runtime function which returns a triple of
cache_type, cache_array and cache_length.

This requires adding support to CEntryStub to call runtime functions
which return a ObjectTriple - a struct containing three Object*
pointers. Also did some cleanup of the x64 CEntryStub to avoid
replicated code.

Replaces the interpreter's use of the ad-hock InterpreterForInPrepare
Runtime function with ForInPrepare in preparation for fixing deopt in
BytecodeGraphBuilder for ForIn (which will be done in a followup CL).

MIPS port contributed by Balazs Kilvady <balazs.kilvady@imgtec.com>.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1576093004

Cr-Commit-Position: refs/heads/master@{#33334}

TBR=danno@chromium.org,machenbach@chromium.org

Review URL: https://codereview.chromium.org/1590283002

Cr-Commit-Position: refs/heads/master@{#33333}

We can return the creation context of the [[BoundTargetFunction]], and
don't need to remember the context in which the function was bound.

R=verwaest@chromium.org
BUG=chromium:535408
LOG=n

Review URL: https://codereview.chromium.org/1590273002

Cr-Commit-Position: refs/heads/master@{#33332}

BUG=v8:4280
LOG=N
TBR=machenbach@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1582273005

Cr-Commit-Position: refs/heads/master@{#33331}

This refactoring removes the dependency on the Token class from the
assembler.h header file, the utility function in question has nothing
to do with assembling in the first place.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1594443003

Cr-Commit-Position: refs/heads/master@{#33330}

Because in the C++ API, a Proxy is an Object

BUG=none
R=bmeurer@chromium.org
LOG=n
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_chromium_rel_ng

Review URL: https://codereview.chromium.org/1590873003

Cr-Commit-Position: refs/heads/master@{#33329}

That way, we don't have to implement the fast <-> slow migration logic,
and we don't allocate in-object properties anyways

BUG=chromium:571365
R=verwaest@chromium.org,neis@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1582773003

Cr-Commit-Position: refs/heads/master@{#33328}

Unify Object::ToObject and Execution::ToObject, and unify all users to
go to Object::ToObject directly. Also remove some dead code from the
frame details debug API.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1589323002

Cr-Commit-Position: refs/heads/master@{#33327}