Previously, emitting two more more unique source positions at the same pc would
generate two or more RelocInfo entries. Now, only the last emitted source
position for any pc is added to the RelocInfo.

Review URL: https://codereview.chromium.org/908443002

Cr-Commit-Position: refs/heads/master@{#26608}

NOTREECHECKS=true
TBR=ulan@chromium.org

Review URL: https://codereview.chromium.org/918113002

Cr-Commit-Position: refs/heads/master@{#26607}

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/913183005

Cr-Commit-Position: refs/heads/master@{#26606}

Just visit young array buffers during scavenge. Additionally keep the views in new space in a separate global list and move them to the corresponding array buffers when they get promoted.

This reduces young generation garbage collections when many array buffers are allocated.
BUG=

Review URL: https://codereview.chromium.org/904633003

Cr-Commit-Position: refs/heads/master@{#26605}

R=danno@chromium.org
TEST=cctest/test-run-intrinsics/CallFunction

Review URL: https://codereview.chromium.org/916873002

Cr-Commit-Position: refs/heads/master@{#26604}

port fdcf3e59 (r26599)

original commit message:

    new classes: implement correct check for uninitialized this in 'super()'

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/913383002

Cr-Commit-Position: refs/heads/master@{#26603}

Rename tools/vim/v8.ycm_extra_conf.py to .ycm_extra_conf.py, so every
YCM plugin (no matter if it's VIM or Emacs) should pick it up
automatically.

Also move the common tools/vim/ninja_output.py to tools/ninja/ as it's
also not related to VIM.

Review URL: https://codereview.chromium.org/904143003

Cr-Commit-Position: refs/heads/master@{#26602}

port 9b158fa7 (r26594)

original commit message:

  new classes: implement default constructors

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/914403004

Cr-Commit-Position: refs/heads/master@{#26601}

TBR=machenbach@chromium.org

BUG=

Review URL: https://codereview.chromium.org/915113004

Cr-Commit-Position: refs/heads/master@{#26600}

R=arv@chromium.org
BUG=v8:3834
LOG=N

Review URL: https://codereview.chromium.org/918603004

Cr-Commit-Position: refs/heads/master@{#26599}

Port 9b158fa7

BUG=

Review URL: https://codereview.chromium.org/914303003

Cr-Commit-Position: refs/heads/master@{#26598}

Port bf49be39

BUG=

Review URL: https://codereview.chromium.org/906813003

Cr-Commit-Position: refs/heads/master@{#26597}

port bf49be39 (r26572)

original commit message:

   new classes: implement new.target passing to superclass constructor

BUG=

Review URL: https://codereview.chromium.org/912233003

Cr-Commit-Position: refs/heads/master@{#26596}

  This error is exposed by this CL:  https://codereview.chromium.org/817293005.

   This CL set all Buildin JS function to optimization_disabled.
   And set the bailout reason to "kBuiltinFunctionCannotBeOptimized". But in Runtime_SetCode() function.
   It copied the the compiler_hints which include the "bool optimization_disabled" value,
   But the corresponding Bailout reason is not copied.
   This leads to the check error in "CompilationInfo::AbortOptimization(...)" function.

  This issue is exposed on turbofan unsupported X87 platform. Crankshaft is invoked to compile
 the typed array function Uint8Array.

BUG=

Review URL: https://codereview.chromium.org/917643002

Cr-Commit-Position: refs/heads/master@{#26595}

R=arv@chromium.org,rossberg@chromium.org
BUG=v8:3834
LOG=N

Review URL: https://codereview.chromium.org/917753002

Cr-Commit-Position: refs/heads/master@{#26594}

The offensive cl is https://codereview.chromium.org/874323003/

Test:
./out/arm64.debug/d8 --test --random-seed=-235865360 --turbo-deoptimization --turbo-filter=* --always-opt --debug-code --verify-heap --gc-interval=500 --stress-compaction test/mjsunit/mjsunit.js test/mjsunit/regress/regress-builtinbust-7.js --trace-deopt

BUG=452067
TBR=dcarney, svenpanne
LOG=n

Review URL: https://codereview.chromium.org/917823002

Cr-Commit-Position: refs/heads/master@{#26593}

BUG=

Review URL: https://codereview.chromium.org/905383003

Cr-Commit-Position: refs/heads/master@{#26592}

R=jarin@chromium.org
TEST=unittests/ControlEquivalenceTest

Review URL: https://codereview.chromium.org/916823002

Cr-Commit-Position: refs/heads/master@{#26591}

port 5d68529b (r26546)

original commit message:

   Parsing: Make Scope not know about Isolate.

  Scope, like Parser, must be able to operate independent of Isolate and the V8
  heap (for background parsing). After the heap-independent phase, there is a heap
  dependent phase, during which we do operations such as scope anaylysis.

  This CL makes the phases explicit by not telling Scope about the Isolate too
  early (during the heap-independent phase, Scope should know nothing about
  Isolate). This decreases the probability of accidental code changes which would
  add heap-dependent operations into the heap-independent phase.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/913163003

Cr-Commit-Position: refs/heads/master@{#26590}

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/917583004

Cr-Commit-Position: refs/heads/master@{#26589}

port 86cae163 (r26545)

original commit message:

  1) Deoptimizer::Reason was replaced with Deoptimizer::DeoptInfo
     because it also has raw position. Also the old name clashes with DeoptReason enum.

  2) c_entry_fp assignment call was added to EntryGenerator::Generate
     So we can calculate sp and have a chance to record the stack for the deopting function.
     btw it makes the test stable.

  3) new kind of CodeEvents was added to cpu-profiler

  4) GetDeoptInfo method was extracted from PrintDeoptLocation.
     So it could be reused in cpu profiler.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/912403003

Cr-Commit-Position: refs/heads/master@{#26588}

This comment used to have a (commented-out) ASSERT attached to it.
But that ASSERT was removed years ago, so the comment is now a
non-sequitar.

Review URL: https://codereview.chromium.org/918453002

Cr-Commit-Position: refs/heads/master@{#26587}

We did not set up the [[HomeObject]] for properties created for
computed property names.

BUG=v8:3879
LOG=N
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/914773002

Cr-Commit-Position: refs/heads/master@{#26586}

Support for `new super` has been removed so this code in the full
code gen is now unreachable.

BUG=None
LOG=N
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/911223002

Cr-Commit-Position: refs/heads/master@{#26585}

R=bmeurer@chromium.org
TEST=unittests/CommonOperatorTest

Review URL: https://codereview.chromium.org/912393002

Cr-Commit-Position: refs/heads/master@{#26584}

R=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/917433007

Cr-Commit-Position: refs/heads/master@{#26583}

LOG=N
BUG=v8:3884

Review URL: https://codereview.chromium.org/916803002

Cr-Commit-Position: refs/heads/master@{#26582}

TBR=vogelheim@chromium.org

Review URL: https://codereview.chromium.org/913173002

Cr-Commit-Position: refs/heads/master@{#26581}

A CompilationInfo constructed from just an Isolate* and a Zone* is in
weird an inconsistent state (calling e.g. flags() on it will crash),
so we need to avoid them. This CL removes almost all of them, the
remaining 2 call sites in (for testing only) will be handled in a
separate CL. Things which have been changed:

  * Linkage is basically a decorator for CallDescriptor now.

  * ChangeLowering doesn't need Linkage at all.

  * JSGenericLowering doesn't need a full CompilationInfo*, just a
    single flag.

  * JSContextSpecializer doesn't need the full CompilationInfo, just a
    Context.

  * Removed unused CompilationInfo from SimplifiedLoweringTester.

This nicely decouples things already a bit more, but there's still
work to do...

Review URL: https://codereview.chromium.org/899803003

Cr-Commit-Position: refs/heads/master@{#26580}

R=vogelheim@chromium.org

Review URL: https://codereview.chromium.org/917653002

Cr-Commit-Position: refs/heads/master@{#26579}

R=jochen@chromium.org
BUG=chromium:457459
LOG=N

Review URL: https://codereview.chromium.org/919613002

Cr-Commit-Position: refs/heads/master@{#26578}

BUG=454725
LOG=n

Review URL: https://codereview.chromium.org/919473008

Cr-Commit-Position: refs/heads/master@{#26577}

BUG=

Review URL: https://codereview.chromium.org/898353002

Cr-Commit-Position: refs/heads/master@{#26576}

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/912333002

Cr-Commit-Position: refs/heads/master@{#26575}

R=jkummerow@chromium.org
BUG=v8:3853
LOG=Y

Review URL: https://codereview.chromium.org/867373003

Cr-Commit-Position: refs/heads/master@{#26574}

BUG=v8:3882
LOG=NO

Review URL: https://codereview.chromium.org/913093002

Cr-Commit-Position: refs/heads/master@{#26573}

R=arv@chromium.org,rossberg@chromium.org
BUG=v8:3834
LOG=N

Committed: https://crrev.com/8aed43e82c6d2742fe5988603cb8841324cc942b
Cr-Commit-Position: refs/heads/master@{#26560}

Review URL: https://codereview.chromium.org/908883002

Cr-Commit-Position: refs/heads/master@{#26572}

BUG=

Review URL: https://codereview.chromium.org/916753002

Cr-Commit-Position: refs/heads/master@{#26571}

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/897213003

Cr-Commit-Position: refs/heads/master@{#26570}

R=verwaest@chromium.org

BUG=

Review URL: https://codereview.chromium.org/911713003

Cr-Commit-Position: refs/heads/master@{#26569}