port r24548.

original commit message:

   Updates to maintain flag --vector-ics

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/642603004

Patch from Chunyang Dai <chunyang.dai@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24479 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/641973002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24478 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- Fix the Macroassembler::TruncatingDiv to compute
  the correct result even when the magic number is negative.
- Fix the MULT instruction in the simulator.

TEST=mjsunit/compiler/division-by-constant
BUG=
R=dusan.milosavljevic@imgtec.com

Review URL: https://codereview.chromium.org/637273002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24475 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/641713002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24474 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

And do not use code points with PATTERN_* property for identifier start.
Maintain that \u180E is a white space character.

BUG=v8:2892
LOG=Y
R=dpino@igalia.com, mathias@qiwi.be

Review URL: https://codereview.chromium.org/638643002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24473 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3330
LOG=Y
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/624013005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24472 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/635323002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24471 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
TBR=ishell@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/638943002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24470 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=chromium:410721
LOG=n
TEST=script_test.py
TBR=tandrii@chromium.org

Review URL: https://codereview.chromium.org/641633002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24468 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r24458 (18af11b)

Original commit message:
Experimental feature vector-ics needs some maintenance.

BUG=
R=dusan.milosavljevic@imgtec.com

Review URL: https://codereview.chromium.org/636163002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24467 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

it's not thread safe, and there are only initialized isolates now.

BUG=none
R=svenpanne@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/633363002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24466 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

it's used on several threads

BUG=none
R=svenpanne@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/639763002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24465 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/638553003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24464 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also fix an awfull bug in simplified lowering.

TEST=cctest,mjsunit/asm
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/640603003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24463 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Lower NumberMultiply, NumberDivide, and NumberModulus to Int32Mul, Int32[U]Div, and Int32[U]Mod when possible in simplified-lowering.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/620553008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24462 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=benchmarks/octane/zlib
TBR=jarin@chromium.org

Review URL: https://codereview.chromium.org/633373002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24461 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
R=svenpanne@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/637263003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24460 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

We hollow out the rotting core and with evil intent repurpose its dry carcass to empower ourselves; with such a shell we can test.

R=mstarzinger@chromium.org

BUG=

Review URL: https://codereview.chromium.org/637873002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24459 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Experimental feature vector-ics needs some maintenance.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/638523003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24458 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

WPO was only enabled to work around an issue with the Isolate's static
initializer which no longer exists.

Requiring XP on Win64 doesn't make sense.

BUG=421363
R=machenbach@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/637303002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24457 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
R=svenpanne@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/639723002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24456 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
R=svenpanne@chromium.org, ishell@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/637283002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24455 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This change enables non-tagged representations in FrameStates.

That allows us to run zlib with deoptimization support and have almost the same performance of the generated code (as the code with no deoptimization). Unfortunately, the frame states seem to confuse typer. As a consequence, we generate more representation changes, which in turn causes the scheduler to take a lot more time and memory (>4x). The added compiler time makes zlib with deopt be about 50% slower.

BUG=
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/614713002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24454 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3618
R=ishell@chromium.org, svenpanne@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/637263002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24453 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Value numbering is now limited to eliminatable operators (i.e. operators
that don't throw and don't write), and uses linear probing instead of
separate chaining.

TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/630423002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24452 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3615
R=yangguo@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/634523003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24451 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Those floating point constant operators require bitwise handling of
their parameters, otherwise 0.0 equals -0.0. This is solved in a
general way by adding new base::bit_equal_to and base::bit_hash
function objects.

TEST=unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/636953002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24450 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

port r24403.

original commit message:

  Support for super keyed loads where key is a name.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/637203002

Patch from Chunyang Dai <chunyang.dai@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24449 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

port r24387.

original commit message:
  [turbofan] support all shift operands on ia32

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/637193002

Patch from Chunyang Dai <chunyang.dai@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24448 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

port r24319.

original commit message:

  Replace OStream with std::ostream.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/635203002

Patch from Chunyang Dai <chunyang.dai@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24447 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

port r24318.

original commit message:
  [turbofan] IA: Uint32ToFloat64 supports mem operand.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/640523002

Patch from Chunyang Dai <chunyang.dai@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24446 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3612
LOG=N
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/628383002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24443 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

prototype.

This does not add the methods/accessors to the prototype or the
constructor.

BUG=v8:3330
LOG=Y
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/631433002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24442 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3614
R=yangguo@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/631223004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24441 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=bmeurer@chromium.org
LOG=n
BUG=none

Review URL: https://codereview.chromium.org/613093004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24440 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3613
R=yangguo@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/632313002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24439 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/637553002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24438 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The StaticParameterTraits are broken by design, and cause way too much
trouble. The compilers usually pick the wrong specialization (i.e. the
default specialization is picked for Load and Phi even tho there is a
specialization for MachineType), which is not only the reason why GVN is
ineffective and slow, but can also lead to correctness issues in some
rare cases.

Also clean up some minor bugs/inconsistencies on the way.

TEST=cctest,unittests
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/636893002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24437 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Embedders that used this method to be able to store a Persistent in a
container should use one of the containers in v8-util.h instead.

Other uses are no longer supported.

BUG=none
R=dcarney@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/635513002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24436 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/636883002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24435 ce2b1a6d-e550-0410-aec6-3dcde31c8c00