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

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/377863003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22270 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/373003004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22269 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also add IC tracing to a path where it was missing.

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/368833003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22268 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/372193002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22267 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts r22265.

Reason: ASAN tests fail.

BUG=
TBR=marja@chromium.org,aperez@igalia.com

Review URL: https://codereview.chromium.org/372983003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22266 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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 ParseFunctionLiteral(),
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 ParseExpression() expects parenthesized expressions
to not be empty, so checking for a closing parenthesis is added in
handling the empty parameter list "()" will accept a right-paren and
return an empty expression, which means that the parameter list is
empty.

Additionally, this adds the following machinery:

 - A runtime flag "harmony_arrow_functions" (disabled by default).
   Enabling "harmony" will enable it as well.
 - An IsArrow bit in SharedFunctionInfo, and accessors for it.
 - An IsArrow bit in FunctionLiteral, accessorts for it, and
   a constructor parameter to set its value.
 - In ParserBase: allow_arrow_functions() and set_allow_arrow_functions()
 - A V8 native %FunctionIsArrow(), which is used to skip adding the
   "function " prefix when getting the source code for an arrow
   function.

R=marja@chromium.org

Review URL: https://codereview.chromium.org/160073006

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22265 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:3408
LOG=Y
R=yurys@chromium.org

Review URL: https://codereview.chromium.org/364813002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22262 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

port r22255.

original commit message:

  Fix computed properties on object literals with a double as propertyname.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/379513002

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22261 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

port r22245.

orginal commit message:

  Only create arguments-maps in the bootstrapper, remove now obsolete ValueType flag.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/372123004

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22260 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

port r22232

original commit message:

This is a mostly mechanical CL (more than 90% Emacs macros and
query-replace-regexp) moving FILE*/StringStream*-based APIs to
OStream-based APIs. There are a few places where this had to stop,
otherwise the CL would be even bigger, but this can easily and
incrementally cleaned up later.

BUG=
R=weiliang.lin@intel.com

Review URL: https://codereview.chromium.org/379493002

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22259 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r22255 (cf84805)

BUG=390732
LOG=y
R=palfia@homejinni.com

Review URL: https://codereview.chromium.org/370363002

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22256 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=390732
LOG=y
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/371973002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22255 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Hydrogenized KeyedLoadGeneric stub: when probing the KeyedLookupCache fails, call the runtime, don't stub-fail.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/367343002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22254 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r22245 (1471c64)

BUG=
R=palfia@homejinni.com

Review URL: https://codereview.chromium.org/375603002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22253 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Suggested usage: echo "source /path/to/v8/tools/gdbinit" >> ~/.gdbinit

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/375503009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Temporarily revert since blink has some properties like this on the
prototype chain where it expects accessorpair-behavior (e.g.,
window.onload).

TBR=dslomov@chromium.org
BUG=

Review URL: https://codereview.chromium.org/378583002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22251 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r22232 (f837b91)

Original commit message:
This is a mostly mechanical CL (more than 90% Emacs macros and
query-replace-regexp) moving FILE*/StringStream*-based APIs to
OStream-based APIs. There are a few places where this had to stop,
otherwise the CL would be even bigger, but this can easily and
incrementally cleaned up later.

BUG=
R=palfia@homejinni.com

Review URL: https://codereview.chromium.org/373773002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22250 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r22247 for breaking Linux arm64 build.

TBR=Jacob.Bramley@arm.com

Review URL: https://codereview.chromium.org/376553006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22249 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Anonymous script has empty resource name. To identify this script we need its id.

R=ulan@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/363553005

Patch from Alexey Kozyatinskiy <kozyatinskiy@google.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22248 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/378503003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22247 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Improve code generated for immediate data processing operations where the shift
on the operation can be exploited to use fewer instructions for the immediate.

For example, Add(x0, x0, 0x1f7de) used to generate:
  movz x16, 0xf7de
  movk x16, 0x1, lsl #16
  add x0, x0, x16

now generates:
  movz x16, 0xfbef
  add x0, x0, x16, lsl #1

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/368313002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=dslomov@chromium.org

BUG=

Review URL: https://codereview.chromium.org/375503008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22245 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r22240 for breaking tests on Linux.

Revert "Remove SetOwnPropertyIgnoreAttribute uses from the bootstrapper"

This reverts commit r22241 for breaking tests on Linux.

TBR=verwaest@chromium.org

Review URL: https://codereview.chromium.org/371913002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22242 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/367763003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22241 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/358363003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22240 ce2b1a6d-e550-0410-aec6-3dcde31c8c00