Arrow functions are parsed from ParseAssignmentExpression(). Handling the
parameter list is done by letting ParseConditionalExpression() parse a comma
separated list of identifiers, and it returns a tree of BinaryOperation nodes
with VariableProxy leaves, or a single VariableProxy if there is only one
parameter. When the arrow token "=>" is found, the VariableProxy nodes are
passed to ParseArrowFunctionLiteral(), which will then skip parsing the
paramaeter list. This avoids having to rewind when the arrow is found and
restart parsing the parameter list.

Note that the empty parameter list "()" is handled directly in
ParsePrimaryExpression(): after is has consumed the opening parenthesis,
if a closing parenthesis follows, then the only valid input is an arrow
function. In this case, ParsePrimaryExpression() directly calls
ParseArrowFunctionLiteral(), to avoid needing to return a sentinel value
to signal the empty parameter list. Because it will consume the body of
the arrow function, ParseAssignmentExpression() will not see the arrow
"=>" token as next, and return the already-parser expression.

The implementation is done in ParserBase, so it was needed to do some
additions to ParserBase, ParserTraits and PreParserTraits. Some of the
glue code can be removed later on when more more functionality is moved
to ParserBase.

Additionally, this adds a runtime flag "harmony_arrow_functions"
(disabled by default); enabling "harmony" will enable it as well.

BUG=v8:2700
LOG=N
R=marja@chromium.org

Review URL: https://codereview.chromium.org/385553003

Patch from Adrián Pérez de Castro <aperez@igalia.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22320 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/387483002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22319 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/380653003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22318 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=marja@chromium.org

Review URL: https://codereview.chromium.org/383713002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22317 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Added special handling for Map and Set in the heap snapshot generator.

Extracted common base type from JSMap/JSSet similar to JSWeakMap/JSWeakSet.

After handling collection specific properties all collections are processed as regular JSObject to make sure all regular properties set on them are present in the heap snapshot.

BUG=v8:3368
LOG=Y
R=alph@chromium.org, rossberg@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=22311

Review URL: https://codereview.chromium.org/373183002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22316 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=marja@chromium.org

Review URL: https://codereview.chromium.org/384663002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22315 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=marja@chromium.org, vogelheim@chromium.org

Review URL: https://codereview.chromium.org/376223002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22314 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This also adds an assert that makes sure allocations are printed.

BUG=391747
LOG=n
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/377213005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22313 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit 47f86e06 due to some weird (likely unrelated) compilation errors.

BUG=v8:3368
TBR=rossberg

Review URL: https://codereview.chromium.org/380153002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22312 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Added special handling for Map and Set in the heap snapshot generator.

Extracted common base type from JSMap/JSSet similar to JSWeakMap/JSWeakSet.

After handling collection specific properties all collections are processed as regular JSObject to make sure all regular properties set on them are present in the heap snapshot.

BUG=v8:3368
LOG=Y
R=alph@chromium.org, rossberg@chromium.org

Review URL: https://codereview.chromium.org/373183002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22311 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Add an overload of OrderedHashTable::FindEntry that takes
a hash along with the key to allow callsites which need to
re-use the hash (such as Add()) to avoid recomputing it.

On my Macbook this results in improvements on the Collections
microbenchmarks:
  Map-Collections: +4%
  Set-Collections: +5%

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/373323002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22308 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

1) Call DeserializeScopeChain only if it's going to do something
non-trivial. And we only need to internalize the AstValueFactory in those cases.

2) BufferedUtf16CharacterStream::FillBuffer doesn't need the length
argument. The length is always kBufferSize and the subclasses can just read it
(it's protected).

R=rossberg@chromium.org
BUG=

Review URL: https://codereview.chromium.org/381613003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22307 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/377273002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22306 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/349243002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22305 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Callers should use the methods with the same name on Isolate instead.

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

Review URL: https://codereview.chromium.org/371023004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22304 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=374134
LOG=n
R=jkummerow@chromium.org
TBR=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/379833003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22303 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Previously we relied on undefined behavior (printf("%s", NULL)), now
we explicitly emit "<unknown>" when we hit an external reference with
an unknown name.

BUG=392068
LOG=y
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/379843002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22302 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=rossberg@chromium.org

Review URL: https://codereview.chromium.org/376183002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22301 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/379803003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22300 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Passes in predictable mode were wrongly reported as failures by the json progress indicator. This moves control about what is reported completely to execution.py.

BUG=391747
LOG=n
R=ishell@chromium.org, jkummerow@chromium.org

Review URL: https://codereview.chromium.org/382443004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22299 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org
BUG=v8:3426
LOG=Y

Review URL: https://codereview.chromium.org/377513006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22298 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Summary:

- Changes in common code are mainly boilerplate changes,
gyp and test status files updates.

- On mips64 simulator all tests pass from all test units.

- Current issues: mjsunit JS debugger tests fail randomly on HW in release mode.
Corresponding tests are skipped on HW.

- Skipped tests on mips64: test-heap/ReleaseOverReservedPages, mjsunit/debug-*

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

Review URL: https://codereview.chromium.org/371923006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22297 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/379133003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22296 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org
BUG=v8:1530,v8:1872
TEST=mjsunit/regress/regress-1530
LOG=N

Review URL: https://codereview.chromium.org/378233006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22295 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=381820
R=hpayer@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/382463002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22294 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Calling OffsetOfElementAt becomes expensive when compiling functions with many
constant pool entries.  This was causing a regression in MandreelLatency due
to the time spent populating the constant pool array for large compiled
functions.

This change avoids calling OffsetOfElementAt for each entry, and instead keeps
track of the current offsets in ConstantPoolBuilder::Populate.  This gives the
following improvements on a Nexus 5:

                     Inline CP  |  OOL CP (before CL)  |  OOL CP (after CL)
Mandreel:               4305    |        3961          |       4120
MandreelLatency:        2298    |        1198          |       1994
Octane Score:           5197    |        4982          |       5152

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/376973002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22293 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3425, v8:3424
LOG=N
TEST=mjsunit/harmony/empty-for.js
R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/377833003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22290 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/375223002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22289 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=dslomov@chromium.org

Review URL: https://codereview.chromium.org/373383002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22288 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=391747
LOG=n
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/371363003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22285 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=yangguo@chromium.org

Review URL: https://codereview.chromium.org/374103002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22284 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=machenbach@chromium.org
BUG=v8:3215
LOG=N

Review URL: https://codereview.chromium.org/376963002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22283 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/371033002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22282 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

- code pre-aging does not work with serializing.
- compilation info needs to remember that we compile for serializing.
- test case leaks memory.

R=vogelheim@chromium.org

Review URL: https://codereview.chromium.org/379563002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22281 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=danno@chromium.org, vogelheim@chromium.org
LOG=n
BUG=none

Review URL: https://codereview.chromium.org/377933002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22280 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

We can iterate a scan on scavange page if it was precisely swept or just added to the old generation.

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/374073002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22279 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Make sure that the overflow store buffer size is always larger or equals than the regular store buffer size.

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/372983005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22278 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/374863004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22277 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=vogelheim@chromium.org

Review URL: https://codereview.chromium.org/373713006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22276 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Use hydrogenized KeyedLoadGeneric stub for generic named loads too (with --compiled-keyed-generic-loads).

R=danno@chromium.org

Review URL: https://codereview.chromium.org/371463003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22271 ce2b1a6d-e550-0410-aec6-3dcde31c8c00