BUG=

Review-Url: https://codereview.chromium.org/1991173002
Cr-Commit-Position: refs/heads/master@{#36412}

BUG=chromium:613518
LOG=n

Review-Url: https://codereview.chromium.org/1999743002
Cr-Commit-Position: refs/heads/master@{#36411}

- Move usable functions into proper heap-utils.h/.cc files and remove
  utils-inl.h file
- Fix assumptions accross the board relying on certain behavior that is not
  invariant

This is a requirement for modifying page size.

BUG=chromium:581412
LOG=N
R=ulan@chromium.org

Review-Url: https://codereview.chromium.org/1999753002
Cr-Commit-Position: refs/heads/master@{#36410}

R=cbruni@chromium.org

Review-Url: https://codereview.chromium.org/1994183002
Cr-Commit-Position: refs/heads/master@{#36409}

In VisitArrayLiteral(), we stopped creating boilerplates during
 compilation. This created a bug, because we'd emit an HStoreKeyed with an
 ElementsKind based on the initial elements kind of the boilerplate. Since
 boilerplates may transition as part of elements transition feedback, this can
 lead to incorrect values (storing a smi in a double array).

BUG=chromium:606021

Review-Url: https://codereview.chromium.org/2000673002
Cr-Commit-Position: refs/heads/master@{#36408}

Instead of dynamically creating semaphore for each page parallel job,
we create one semaphore for MarkCompact and reuse it.

This patch also removes all instrumentation code that was added to
help with investigation.

BUG=chromium:609249
LOG=NO

Review-Url: https://codereview.chromium.org/1998213002
Cr-Commit-Position: refs/heads/master@{#36407}

Review-Url: https://codereview.chromium.org/2003513002
Cr-Commit-Position: refs/heads/master@{#36406}

BUG=v8:4483
R=littledan@chromium.org, hpayer@chromium.org, mstarzinger@chromium.org, ulan@chromium.org

Review-Url: https://codereview.chromium.org/1992093003
Cr-Commit-Position: refs/heads/master@{#36405}

For now we treat simplified ObjectIsFoo operators as escaping uses when
it comes to escape analysis. Eventually we want to handle them in the
associated reducer, just like we do with ObjectIsSmi.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/2002573002
Cr-Commit-Position: refs/heads/master@{#36404}

Revert of Refactor script position calculation (patchset #3 id:40001 of https://codereview.chromium.org/2003483002/ )

Reason for revert:
Crashes gc stress with custom snapshot:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/builds/5763

Original issue's description:
> Refactor script position calculation
>
> Script position calculation logic (i.e. line & column numbers for a
> given code position) is now based on a single method
> Script::GetPositionInfo(). Refactored related code in isolate.cc and
> js/messages.js to use the new method. The line_ends accessor is still
> in use by chromium and thus cannot be removed yet.
>
> R=yangguo@chromium.org
> BUG=
>
> Committed: https://crrev.com/2f3879d54633c4076d38e9fc85b6e2e157c61548
> Cr-Commit-Position: refs/heads/master@{#36398}

TBR=yangguo@chromium.org,jgruber@chromium.org,jgruber@google.com
# 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/1995323002
Cr-Commit-Position: refs/heads/master@{#36403}

 - Lane indices are no longer required to be integers. Add index coersion for loads/stores
 - Give shift operators masking shift count semantics
 - Throw type/range errors instead of runtime asserts.

BUG=v8:4963
LOG=N

R=bbudge@chromium.org, bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/1965443003
Cr-Commit-Position: refs/heads/master@{#36402}

Also change parser to insert %_GeneratorClose instead of %GeneratorClose.
Full-codegen generators will fall back to the runtime function.

BUG=v8:4907

Review-Url: https://codereview.chromium.org/1993073003
Cr-Commit-Position: refs/heads/master@{#36401}

This adds support to materialize JSFunction objects from deoptimization
information. By now we need to support this because TurboFan's escape
analysis can produce virtual (i.e. non-escaping) closures.

R=jarin@chromium.org

Review-Url: https://codereview.chromium.org/1998143002
Cr-Commit-Position: refs/heads/master@{#36400}

NOTRY=true
TBR=mtrofin@chromium.org

Review-Url: https://codereview.chromium.org/1996923002
Cr-Commit-Position: refs/heads/master@{#36399}

Script position calculation logic (i.e. line & column numbers for a
given code position) is now based on a single method
Script::GetPositionInfo(). Refactored related code in isolate.cc and
js/messages.js to use the new method. The line_ends accessor is still
in use by chromium and thus cannot be removed yet.

R=yangguo@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2003483002
Cr-Commit-Position: refs/heads/master@{#36398}

Revert of [ESNext] Activate async/await for ClusterFuzz (patchset #1 id:1 of https://codereview.chromium.org/1992173002/ )

Reason for revert:
First CF feedback is in, reverting for now until the know bugs are fixed.

Original issue's description:
> [ESNext] Activate async/await for ClusterFuzz
>
> BUG=v8:4483
> R=neis@chromium.org,littledan@chromium.org,caitpotter88@gmail.com
> LOG=N
>
> Committed: https://crrev.com/c57cadfa09fa493141bf43c1c7b898187a71da19
> Cr-Commit-Position: refs/heads/master@{#36362}

TBR=littledan@chromium.org,caitpotter88@gmail.com,neis@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4483

Review-Url: https://codereview.chromium.org/2003503002
Cr-Commit-Position: refs/heads/master@{#36397}

  port f241a61a (r36360)

  original commit message:
  We cannot tier up from interpreted to baseline code when there is an
  activation of the function on the stack. This significantly regresses
  the performance of recursive functions since they are unlikely to get
  tiered up.

  This CL adds the ability for a function to be marked for baseline
  compilation when it returns. To do this we patch the
  InterpreterEntryTrampoline return address to point to
  InterpreterMarkBaselineOnReturn, which leaves the
  interpreted frame and recompile the function for
  baseline.

  This improves the score of EarlyBoyer by ~8x for Ignition.

BUG=

Review-Url: https://codereview.chromium.org/1998153002
Cr-Commit-Position: refs/heads/master@{#36396}

Introduce three new JS operators in Turbofan:
- JSGeneratorStore is used in implementing Ignition's SuspendGenerator bytecode.
- JSGeneratorRestoreContinuation and JSGeneratorRestoreRegister are used in
  implementing Ignition's ResumeGenerator bytecode.

Remove the runtime functions that were used to implement these bytecodes before.

BUG=v8:4907

Review-Url: https://codereview.chromium.org/1991203002
Cr-Commit-Position: refs/heads/master@{#36395}

BUG=

Review-Url: https://codereview.chromium.org/1993233002
Cr-Commit-Position: refs/heads/master@{#36394}

BUG=

Review-Url: https://codereview.chromium.org/1992153002
Cr-Commit-Position: refs/heads/master@{#36393}

R=jochen@chromium.org, verwaest@chromium.org

Review-Url: https://codereview.chromium.org/1922603006
Cr-Commit-Position: refs/heads/master@{#36392}

Review-Url: https://codereview.chromium.org/1998103002
Cr-Commit-Position: refs/heads/master@{#36391}

This patch re-lands #36341 with another fix to make
the amd64-generic build work as well.

R=machenbach@chromium.org, hablich@chromium.org, adamk@chromium.org
BUG=608596, 595653
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:chromeos_daisy_chromium_compile_only_ng,chromeos_amd64-generic_chromium_compile_only_ng,chromeos_x86-generic_chromium_compile_only_ng,linux_chromium_gn_chromeos_rel,linux_chromium_gn_chromeos_dbg

Review-Url: https://codereview.chromium.org/1996513005
Cr-Commit-Position: refs/heads/master@{#36390}

... introduced in https://codereview.chromium.org/1782743003/

TBR=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/1998093002
Cr-Commit-Position: refs/heads/master@{#36389}

  port 78b1585f (r36355)

  original commit message:

BUG=

Review-Url: https://codereview.chromium.org/1998013002
Cr-Commit-Position: refs/heads/master@{#36388}

Rolling v8/build to f81cc400005454453b83aad6e47e321a37d092dd

Rolling v8/third_party/android_tools to 5b5f2f60b78198eaef25d442ac60f823142a8a6e

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

Review-Url: https://codereview.chromium.org/1999603003
Cr-Commit-Position: refs/heads/master@{#36387}

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

Review-Url: https://codereview.chromium.org/1989363008
Cr-Commit-Position: refs/heads/master@{#36386}

They are not currently implemented by the ARM64 simulator.

R=jarin@chromium.org, bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/1990073002
Cr-Commit-Position: refs/heads/master@{#36385}

port f241a61a

Original Commit Message:
    We cannot tier up from interpreted to baseline code when there is an
    activation of the function on the stack. This significantly regresses
    the performance of recursive functions since they are unlikely to get
    tiered up.

    This CL adds the ability for a function to be marked for baseline
    compilation when it returns. To do this we patch the
    InterpreterEntryTrampoline return address to point to
    InterpreterMarkBaselineOnReturn, which leaves the
    interpreted frame and recompile the function for
    baseline.

    This improves the score of EarlyBoyer by ~8x for Ignition.

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

Review-Url: https://codereview.chromium.org/1993343002
Cr-Commit-Position: refs/heads/master@{#36384}

Based on assembler changes from this patch:
https://codereview.chromium.org/90643003/

BUG=https://bugs.chromium.org/p/v8/issues/detail?id=4124
R=titzer@chromium.org,bbudge@chromium.org
LOG=N

Review-Url: https://codereview.chromium.org/1994083003
Cr-Commit-Position: refs/heads/master@{#36383}

In ES2015, the "byteLength" and "byteOffset" properties of DataViews are
getters on the prototype, so the previously-used strategy of special-casing
them using only the receiver map is invalid.

A future CL will need to use the same strategy which will be taken for
TypedArray "length", "byteLength", and "byteOffset": adding a prototype
chain check.

BUG=v8:5018, chromium:593634

Review-Url: https://codereview.chromium.org/1984043002
Cr-Commit-Position: refs/heads/master@{#36382}

This patch is a follow up to https://codereview.chromium.org/1972103002/
adding support for the `Operand_R_LSL_I` addressing mode to loads and
stores for ARM.

Just as the ARM64 implementation, the shift + load/store pattern is only
really relevant to the interpreter. For this reason, this patch does not
add support for the other addressing modes (`R_LSR_I`, `R_ASR_I` and
`R_ROR_I`) as I haven't seen those pattern being generated. Additionally,
the optimization is restricted 32 bit loads and stores.

kind = BYTECODE_HANDLER
name = Star
compiler = turbofan
Instructions (size = 40)
0x22a5f860     0  e2851001       add r1, r5, #1
0x22a5f864     4  e19610d1       ldrsb r1, [r6, +r1]
0x22a5f868     8  e1a0200b       mov r2, fp
0x22a5f86c    12  e7820101       str r0, [r2, +r1, lsl #2]
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^
0x22a5f870    16  e2855002       add r5, r5, #2
0x22a5f874    20  e7d61005       ldrb r1, [r6, +r5]
0x22a5f878    24  e7981101       ldr r1, [r8, +r1, lsl #2]
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^
0x22a5f87c    28  e12fff11       bx r1

BUG=

Review-Url: https://codereview.chromium.org/1974263002
Cr-Commit-Position: refs/heads/master@{#36381}

R=jarin@chromium.org,bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/1993033002
Cr-Commit-Position: refs/heads/master@{#36380}

Move it to HARMONY_STAGED from HARMONY_INPROGRESS.

Update test262.status now that case mapping tests are passing with
'--harmony' specified.

BUG=v8:4476,v8:4477
LOG=Y
TEST=test262/{built-ins,intl402}/Strings/*, webkit/fast/js/*,
     mjsunit/string-case, intl/general/case*
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_noi18n_rel_ng

Review-Url: https://codereview.chromium.org/1990083002
Cr-Commit-Position: refs/heads/master@{#36379}

The MLS instruction is available in all ARMv7 devices, and in no ARMv6
devices, aside from the usual ARMv6T2 caveat. We don't need a separate
feature flag for it.

BUG=

Review-Url: https://codereview.chromium.org/1988133004
Cr-Commit-Position: refs/heads/master@{#36378}

- Removing null checks as we always have the CodeRange object (it might be
  invalid, but it's there)
- Account for reserved area (Win64) in SetUp so we the caller doesn't need to be
  aware of it

R=ulan@chromium.org

Review-Url: https://codereview.chromium.org/1991253002
Cr-Commit-Position: refs/heads/master@{#36377}

port 78b1585f

R=danno@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/1993273002
Cr-Commit-Position: refs/heads/master@{#36376}

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

BUG=

Review-Url: https://codereview.chromium.org/1993063002
Cr-Commit-Position: refs/heads/master@{#36375}

Assembler::db() could start a trampoline pool at wrong pc position.

TEST: mjsunit/asm/embenchen/zlib

BUG=

Review-Url: https://codereview.chromium.org/1994143002
Cr-Commit-Position: refs/heads/master@{#36374}

Define the ELF e_machine field for ARM64, enabling --perf-prof.

BUG=

Review-Url: https://codereview.chromium.org/1992263002
Cr-Commit-Position: refs/heads/master@{#36373}