* Turned all uses of 'const' into 'var'.
* Turned all uses of local 'function' into 'var'.
* Added a couple of missing toplevel 'var' declarations.

One consequence is that the properties on the builtin object  are no longer
non-writable, and I had to adapt one test. Is that a problem?

Unfortunately, we cannot actually switch the library scripts to strict mode
by default, because that makes observable things like poisoned .caller properties
for library functions.

Also removed dead flag code in Compiler::Compile.

R=yangguo@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9415010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10758 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9423041

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10757 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9427011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10756 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/9372021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10755 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9427010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10754 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Hidden behind --type-info-threshold=X flag, usage dependent on experimental profiler.

Review URL: https://chromiumcodereview.appspot.com/9403009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10753 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9424032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10752 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:1960
TEST=compile with GYPFLAGS=-Dv8_compress_snapshot_data=bz2, then run d8 with valgrind

Review URL: https://chromiumcodereview.appspot.com/9395073

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10751 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Function calls that may return a failure must use the result. Enforce
this by adding missing MUST_USE_RESULT to their declarations.
Review URL: https://chromiumcodereview.appspot.com/9421032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10748 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org
TEST=mozilla,sputnik

Review URL: https://chromiumcodereview.appspot.com/9421031

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10747 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

To test the upcoming changes for map sharing in the presence of accessors, it is
essential that we keep a few global invariants: The map tree should always stay
a tree and AccessorPairs should not be shared between different DescriptorArrays
and/or StringDictionaries. This CL adds a test method for the latter invariant
and makes some changes to the bootstrapping process to avoid such sharing.

Note that we can't enable the new test method permanently yet, because we
currently go back and forth between fast mode and slow mode when adding an
accessor and break this invariant temporarily. This will be handled in a
separate CL.

Review URL: https://chromiumcodereview.appspot.com/9417043

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10744 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org
TEST=test262/S15.5.4.14_A?_T?

Review URL: https://chromiumcodereview.appspot.com/9355005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10743 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/9416058

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10742 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The checks were at the wrong abstraction level, JSObject is the right place for
this check. Note that other uses of ValueAtPut either don't need a check at all
(like the one used for copying boilerplate) or do the check for themselves.

Review URL: https://chromiumcodereview.appspot.com/9417044

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10741 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org
TEST=test262

Review URL: https://chromiumcodereview.appspot.com/9415046

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10740 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

and fix Clang C++11 compile error.

Review URL: https://chromiumcodereview.appspot.com/9420049

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10739 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Detect those methods by reference to StateTag::EXTERNAL in their bodies.

R=fschneider@google.com

Review URL: https://chromiumcodereview.appspot.com/9420046

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10738 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org
BUG=v8:1790
TEST=mjsunit/regress/regress-1790,test262/15.4.4.22-9-9

Review URL: https://chromiumcodereview.appspot.com/9419044

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10737 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This extends the current support for nested object literals we already
have in Crankshaft, to also support nested array literals and mixed
nested literals containing arrays and objects. All three types are
generated by the unified HFastLiteral instruction.

All previous upper bounds on nested literal graphs remain unchanged,
keeping the size of generated code in check.

The main intention is to boost performance of two-dimensional array
literals containing constant elements (aka. matrices).

R=danno@chromium.org
TEST=mjsunit/compiler/literals-optimized

Review URL: https://chromiumcodereview.appspot.com/9403018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10734 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=fschneider@chromium.org
BUG=v8:1322

Review URL: https://chromiumcodereview.appspot.com/9417013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10733 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9414007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10732 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Ensure that GVN eliminates all transitions that are dominated by an equivalent transition, even if there is a DependsOn-changing instruction in between.

R=fschneider@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9365057

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10731 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9416016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10728 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:1952
Review URL: https://chromiumcodereview.appspot.com/9414006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10727 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Based on r9686 (10e1ea5).

BUG=
TEST=mozilla regress-355497.js

Review URL: https://chromiumcodereview.appspot.com/9309030
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10722 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=fschneider@chromium.org
BUG=v8:1322
TEST=mjsunit/compiler/inline-literals

Review URL: https://chromiumcodereview.appspot.com/9419005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10721 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r10699 (18a0fc0).

Original commit message:

(behind FLAG_count_based_interrupts; only on ia32)

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9420005
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10720 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:1945
TEST=regress-1945.js

Review URL: https://chromiumcodereview.appspot.com/9418005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10719 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9419003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10718 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This method works around the Branch offset and relocinfo issues by emulating a pc-relative jump.
This allows us to generate larger entry tables. The theoretical limit is 2^16 (number of entries)
but even that can be extended by allowing a larger instruction count.

Also reverted the mips-specific constant (kNumberOfEntries) in deoptimizer.h

BUG=
TEST=
Review URL: https://chromiumcodereview.appspot.com/9347016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10717 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

which were introduced in r10700.

Review URL: https://chromiumcodereview.appspot.com/9401005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10716 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9417002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10715 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Previous behavior diverged in ICs and Crankshaft. When storing to a Float32Array or Float64Array, the ICs treated undefined as zero while Crankshaft treated it as NaN. Now both ICs and Crankshaft treat it as NaN, which is consistent with the WebGL & ECMAScript spec.

R=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9402008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10714 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org
TEST=cctest/test-api/IdleNotification

Review URL: https://chromiumcodereview.appspot.com/9403014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10713 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:1878
TEST=regress-1878.js

Review URL: https://chromiumcodereview.appspot.com/9402009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10712 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
TEST=--smi-only-arrays should be perf-neutral to allocating big arrays in a tight loop.

Review URL: https://chromiumcodereview.appspot.com/9356002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10711 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9307118
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10710 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r10662 (c8054f6).

Original commit message:

Turns Declaration into an abstract class, and introduces VariableDeclaration as a concrete subclass.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9395015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10709 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TEST=buildbot redness gone

Review URL: https://chromiumcodereview.appspot.com/9360043

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10708 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r10673 (18d3af5).

Original commit message:
Supports growing non-COW JSArray by a single element if the backing store has room, and initial allocation of a backing store for the store to index zero of an empty array  to kPreallocatedArrayElements elements (e.g. the [] array literal).

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9378005
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10707 ce2b1a6d-e550-0410-aec6-3dcde31c8c00