Fix bug where input register was potentially corrupted, tidy up register use in
TruncateDoubleToI and rename TryInlineTruncateDoubleToI.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/173663002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19527 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/170303003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19526 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3168
LOG=N
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/171603008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19525 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org
TBR=yangguo@chromium.org

Review URL: https://codereview.chromium.org/174873002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19522 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/171533017

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19521 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=
BUG=
R=jkummerow@chromium.org, plind44@gmail.com

Review URL: https://codereview.chromium.org/173773003

Patch from Dusan Milosavljevic <Dusan.Milosavljevic@rt-rk.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19520 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/170483002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19519 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/165993004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19518 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/166273020

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19517 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/166343004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19516 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- This adds a python layer on top of the low-level git calls to control parameter passing and return values.
- This also fixes a bug in FindLastTrunkPush that only shows up in manual mode when the last push versions are iterated.
- The order of some parameters changed in some git calls in the tests to be uniform.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/171423013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19515 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The cross_build_gcc.sh script didn't set LINK, so cross builds would
fail at the last step.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/170843011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19514 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/173883003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19513 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/166323015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19512 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/165743003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19511 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/170203003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19510 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The Parser never used the symbol stream produced by the PreParser for anything
useful, due to a bug introduced 3.5 years ago by
https://codereview.chromium.org/3356010/diff/7001/src/parser.cc.

The bug is that calling Initialize on symbol_cache_ doesn't change its
length. So the length remains 0, and the "if" in Parser::LookupSymbol is always
true, and Parser::LookupCachedSymbol is never called and symbol_cache_ never
filled.

This bug also masked a bug that the symbol stream produced by PreParser doesn't
match what Parser wants to consume. The repro case is the following:

var myo = {if: 4}; print(myo.if);

PreParser doesn't log a symbol for the first "if", but in the corresponding
place, Parser consumes one symbol from the symbol stream. Since the consumed
symbols were never really used, this mismatch went unnoticed.

This CL also fixes that bug.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/172753002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19505 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/172333004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19504 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Assert register sizes in StringCharLoadGenerator, and fix char_code comparison
in DoStringCharFromCode.

BUG=
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/172483002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19503 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
TBR=ulan@chromium.org

Review URL: https://codereview.chromium.org/173533002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19501 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Regression surfaced with r19009, but latent error was present since
r17767.

BUG=
R=dusan.milosavljevic@rt-rk.com

Review URL: https://codereview.chromium.org/171793005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19500 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r19487 (bd8c70f)

BUG=v8:2938
LOG=N
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/172533002

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19499 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/165943005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19498 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The branch types include 'always' and 'never', and types like reg_zero (CBZ) and
reg_bit_clear (TBZ).
This will be used by incoming improvements to the code generated for
deoptimization exit points.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/170783002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19497 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The size_ member is only used in debug mode, so we should only define
it in debug mode.

BUG=none
R=rodolph.perfetta@arm.com, ulan@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/171583004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19495 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This extracts the pattern "if call git fails: raise exception", which is spread all over the place. Now all calls to git are required to return gracefully and give a uniform exception message if they don't.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/166903012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19494 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Error message migration is done and Blink has updated the expected result.

R=yangguo@chromium.org, ulan@chromium.org
BUG=v8:3126
LOG=N

Review URL: https://codereview.chromium.org/169353004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19493 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also rename is_lazily_compiled in (Pre)Parser; it really means "is lazily
parsed" and doesn't correspond to the lazy compilation decision.

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/169223009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19492 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This fixes some snapshot=off, debug-mode regressions.

  - Call CheckConstPool when entering InsturctionAccurateScopes. This
    fixes a problem in PushMultipleTimes where 'count' is very high.
    Each call to PushHelper starts an InstructionAccurateScope
    immediately after the last one finishes, with no opportunity for the
    constant pool to be generated.

  - Temporarily disable AssertStackConsistency in PrepareForPush. This
    assertion seems to push the code size too far, and several cctests
    (intermittently) fail due to buffer size limitations. I would like
    to renable this assertion later.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/172453002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19491 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Refresh the implementation of Symbols to catch up with what the
specification now mandates:

* The global Symbol() function manufactures new Symbol values,
  optionally with a string description attached.

* Invoking Symbol() as a constructor will now throw.

* ToString() over Symbol values still throws, and
  Object.prototype.toString() stringifies like before.

* A Symbol value is wrapped in a Symbol object either implicitly if
  it is the receiver, or explicitly done via Object(symbolValue) or
  (new Object(symbolValue).)

* The Symbol.prototype.toString() method no longer throws on Symbol
  wrapper objects (nor Symbol values.) Ditto for Symbol.prototype.valueOf().

* Symbol.prototype.toString() stringifies as "Symbol("<description>"),
  valueOf() returns the wrapper's Symbol value.

* ToPrimitive() over Symbol wrapper objects now throws.

Overall, this provides a stricter separation between Symbol values and
wrapper objects than before, and the explicit fetching out of the
description (nee name) via the "name" property is no longer supported
(by the spec nor the implementation.)

Adjusted existing Symbol test files to fit current, adding some extra
tests for new/changed behavior.

LOG=N
R=arv@chromium.org, rossberg@chromium.org, arv, rossberg
BUG=v8:3053

Review URL: https://codereview.chromium.org/118553003

Patch from Sigbjorn Finne <sigbjornf@opera.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19490 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This prepares for weak objects in IC stubs.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/172233003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19489 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commits r19463 and r19457 (includes MIPS port), there was a
Sunspider perf issue and on reflection we can achieve the necessary
result in a new way.

TBR=verwaest@chromium.org

Review URL: https://codereview.chromium.org/172383003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19488 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org
BUG=v8:2938
LOG=N

Review URL: https://codereview.chromium.org/172133003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19487 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:2938
LOG=N
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/163563003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19486 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=danno@chromium.org
TBR=danno@chromium.org

Review URL: https://codereview.chromium.org/170283011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19483 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is part of moving towards an lkgr-push script and prepares the deprecation of the prepare push commit.

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/169843002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19482 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/172173003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19481 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/169353003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19480 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The spec requires that we throw under certain conditions.

BUG=v8:3064
LOG=y
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/103853006

Patch from Erik Arvidsson <arv@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19479 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- The backed state dict is now persisted and restored in the step template as a json file
- All explicit persist/restore calls are removed
- Added testing an unexpected script failure + restart with state recovery to the merge-to-branch test
- This CL is not changing external behavior of the scripts

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/170583002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19478 ce2b1a6d-e550-0410-aec6-3dcde31c8c00