port 2fc2cb99 (r32144)

  original commit message:
  The old code was not ready for properly initialize objects with non standard headers and non zero in-object properties number.

  MacroAssembler::Allocate() implementations now return both start and end addresses of the new object (done by parameter renaming).

BUG=

Review URL: https://codereview.chromium.org/1467923002

Cr-Commit-Position: refs/heads/master@{#32161}

  port ceade6cf (r32131)

  original commit message:
  This adds a new %NewArray runtime entry, which constructs a new JSArray
  and does the subclassing correctly (to the same degree that %NewObject
  does currently), and also deals properly with the AllocationSite
  feedback mechanism. This runtime entry will be used by TurboFan and is
  also used as a fallback in the subclassing case in the stub currently.

BUG=

Review URL: https://codereview.chromium.org/1462283003

Cr-Commit-Position: refs/heads/master@{#32160}

Review URL: https://codereview.chromium.org/1471533002

Cr-Commit-Position: refs/heads/master@{#32159}

Rolling v8/tools/clang to f1ac92b46273db6ba0286cc1fe214d1aaa788f6d

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

Review URL: https://codereview.chromium.org/1466073003

Cr-Commit-Position: refs/heads/master@{#32158}

Rolling v8/tools/clang to c37aa129283791664a03189e495e5ff2a4077288

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

Review URL: https://codereview.chromium.org/1464063002

Cr-Commit-Position: refs/heads/master@{#32157}

R=littledan@chromium.org

Review URL: https://codereview.chromium.org/1448183002

Cr-Commit-Position: refs/heads/master@{#32156}

This lets us pass one test262 test (and seems to match what other
implementations do to handle this case).

R=littledan@chromium.org
BUG=v8:4362
LOG=n

Review URL: https://codereview.chromium.org/1454543003

Cr-Commit-Position: refs/heads/master@{#32155}

Remove unused descriptor slack from strict functions to avoid breaking initial map descriptor sharing invariant.

BUG=chromium:555542
LOG=N

Review URL: https://codereview.chromium.org/1457223004

Cr-Commit-Position: refs/heads/master@{#32154}

We should not be counting the bump pointer allocations done during scavenge as
the objects are copied. The inline allocation observers were getting unnecessary
notifications.

R=hpayer@chromium.org, ulan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1465633002

Cr-Commit-Position: refs/heads/master@{#32153}

TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/1461133003

Cr-Commit-Position: refs/heads/master@{#32152}

* Adds a PrepareForTailCall instruction that bumps the stack in the case that
  the number of parameters passed to the callee causes the stack to exceed the
  calleer's frame size.
* Uses the gap resolver to move the saved caller return address and frame
  pointer to the approprate location in the tail-called frame.

BUG=v8:4076
LOG=n

Review URL: https://codereview.chromium.org/1455833004

Cr-Commit-Position: refs/heads/master@{#32151}

This will allow callers (e.g. the infra recipe) to check
which steps have been executed and monitor success/failure.

BUG=chromium:559141
LOG=n
NOTRY=true

Review URL: https://codereview.chromium.org/1463143004

Cr-Commit-Position: refs/heads/master@{#32150}

TEST=unittests/InstructionSelectorTest.Word32XorMinusOneWithWord32Or,
     Word64XorMinusOneWithWord64Or
BUG=

Review URL: https://codereview.chromium.org/1459723002

Cr-Commit-Position: refs/heads/master@{#32149}

Original issue's description:
> Prepare to enable in-object properties in subclasses on a case by case basis.
>
> Minor cleanup in VisitorId selection.
>
> Committed: https://crrev.com/7c449a62edfc03aed84d94da323dcfe2b51a3600
> Cr-Commit-Position: refs/heads/master@{#32030}

This is a mostly clean reland.

Review URL: https://codereview.chromium.org/1459133002

Cr-Commit-Position: refs/heads/master@{#32148}

Port f6e689ce

BUG=

Review URL: https://codereview.chromium.org/1463193002

Cr-Commit-Position: refs/heads/master@{#32147}

BUG=4134
R=epertoso@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1458003006

Cr-Commit-Position: refs/heads/master@{#32146}

Introduce a JSCreateArray operator that represents the Array
constructor, and lower call and construct calls to the Array
constructor to JSCreateArray. Currently we don't yet replace
that with an inline allocation, but always use the specialized
stubs for the Array constructor.

This saves a lot of unnecessary deopts and elements transitions
because now we can actually consume the allocation site feedback
for the transitions.

R=mstarzinger@chromium.org
BUG=v8:4470
LOG=n

Review URL: https://codereview.chromium.org/1466643002

Cr-Commit-Position: refs/heads/master@{#32145}

The old code was not ready for properly initialize objects with non standard headers and non zero in-object properties number.

MacroAssembler::Allocate() implementations now return both start and end addresses of the new object (done by parameter renaming).

Review URL: https://codereview.chromium.org/1459083003

Cr-Commit-Position: refs/heads/master@{#32144}

BUG=

Review URL: https://codereview.chromium.org/1463083004

Cr-Commit-Position: refs/heads/master@{#32143}

BUG=v8:4555
LOG=N

Review URL: https://codereview.chromium.org/1462833002

Cr-Commit-Position: refs/heads/master@{#32142}

This change introduces register re-mapping to avoid assignment hazards
in binary expressions. Expressions that cause problems typically have
the form y = x + (x = 4);. The problem occurs because the lhs value
evaluates to the register holding x. The rhs updates that register and
then applying the operation would use the new value as the lhs.

By tracking loads and stores in binary expressions the generator is now
able to detect when condition occurs and uses a temporary register for
the rhs value. When the binary expression evaluation is complete the
variable is updated with the latest temporary.

A new bytecode Mov performs this update without touching the
accumulator.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1412683011

Cr-Commit-Position: refs/heads/master@{#32141}

Argument allocation in typed lowering was producing
dangling effect chains. This patch fixes three sources
of dangling effect chains.

BUG=

Review URL: https://codereview.chromium.org/1447323005

Cr-Commit-Position: refs/heads/master@{#32140}

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1458423002

Cr-Commit-Position: refs/heads/master@{#32139}

Don't generate FP64 mode specific instructions in FP32 mode.

TEST=cctest/test-disasm-mips/Type1,
     cctest/test-disasm-mips/CVT_DISSASM

BUG=

Review URL: https://codereview.chromium.org/1462803003

Cr-Commit-Position: refs/heads/master@{#32138}

BUG=4134
R=epertoso@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/1460193002

Cr-Commit-Position: refs/heads/master@{#32137}

Adds support for the New, CallRuntime and CallJSRuntime bytecodes in
BytecodeGraphBuilder. Also adds BuildLoadObjectField,
BuildLoadGlobalObject and BuildLoadNativeContextField helpers.

Landed on behalf of rmcilroy.

BUG=v8:4280
LOG=N

Review URL: https://codereview.chromium.org/1456483002

Cr-Commit-Position: refs/heads/master@{#32136}

Cr-Commit-Position: refs/heads/master@{#32135}

If Math.random is called when creating the snapshot, we need seeds to
work with. Those seeds are going to be overwritten after deserializing
from the snapshot.

NOTRY=true
NOTREECHECKS=true
TBR=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1458003005

Cr-Commit-Position: refs/heads/master@{#32134}

BUG=chromium:534332
LOG=n
TBR=jochen@chromium.org
NOTREECHECKS=true

Review URL: https://codereview.chromium.org/1464583004

Cr-Commit-Position: refs/heads/master@{#32133}

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1462293002

Cr-Commit-Position: refs/heads/master@{#32132}

This adds a new %NewArray runtime entry, which constructs a new JSArray
and does the subclassing correctly (to the same degree that %NewObject
does currently), and also deals properly with the AllocationSite
feedback mechanism. This runtime entry will be used by TurboFan and is
also used as a fallback in the subclassing case in the stub currently.

BUG=v8:3101, v8:3330
LOG=n

Review URL: https://codereview.chromium.org/1456423003

Cr-Commit-Position: refs/heads/master@{#32131}

Rolling v8/tools/swarming_client to 05e17879accce360bee999cd9ec891d761056bc2

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

Review URL: https://codereview.chromium.org/1460103003

Cr-Commit-Position: refs/heads/master@{#32130}

  port 469d9bfa (r32120)

  original commit message:

BUG=

Review URL: https://codereview.chromium.org/1459843004

Cr-Commit-Position: refs/heads/master@{#32129}

Port 469d9bfa

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

Review URL: https://codereview.chromium.org/1465643002

Cr-Commit-Position: refs/heads/master@{#32128}

The TruncateFloat64ToUint64 operator converts a float64 to an uint64 using
round-to-zero rounding mode (truncate). If the input value is outside uint64
range, then the result depends on the architecture. I provide an implementation for x64 and arm64.

@v8-ppc-ports and @v8-mips-ports, can you do the implementations for ppc64 and mips64?

R=titzer@chromium.org

Review URL: https://codereview.chromium.org/1457373002

Cr-Commit-Position: refs/heads/master@{#32127}

This removes some dead code from the function invocation code when the
arguments adaptor trampoline is called. This seems to be leftover code
from when we used to support calling code objects directly.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/1455293004

Cr-Commit-Position: refs/heads/master@{#32126}

This changes all direct function calls in Crankshaft to pass undefined
via the register expected to hold the new.target value. Note that the
register is still ignored by all callees for now.

This is a preparatory CL to allows us passing new.target in a register
instead of via a side-channel through the construct stub frame.

R=bmeurer@chromium.org
BUG=v8:4544
LOG=n

Review URL: https://codereview.chromium.org/1459183002

Cr-Commit-Position: refs/heads/master@{#32125}

Following logic is using for getting function name in JSFunction::GetDebugName:
1. if function has displayName and its type is string then use it
2. if function has defined property Function.name as value and its type string then use it
3. otherwise use SharedFunctionInfo::DebugName as functionName.

JSFunction::GetDebugName is exposed in V8 API and in FunctionMirror interface.

BUG=chromium:17356
R=yangguo@chromium.org,mstarzinger@chromium.org
LOG=Y

Review URL: https://codereview.chromium.org/1449473005

Cr-Commit-Position: refs/heads/master@{#32124}

This simplifies follow-on changes to the FastNewClosureStub.

BUG=

Review URL: https://codereview.chromium.org/1433923002

Cr-Commit-Position: refs/heads/master@{#32123}

TBR=verwaest@chromium.org
NOTREECHECKS=true

Review URL: https://codereview.chromium.org/1459253002

Cr-Commit-Position: refs/heads/master@{#32122}