GetScriptOrigin is used for DevTools instrumentation.

If inspected call-site is inside "eval" then returned script name is "undefined". To fix this problem we can use the "nameOrSourceURL" method of script-wrapper.

This is a re-upload of https://codereview.appspot.com/6811090/ for the purpose of landing.

BUG=159413

Review URL: https://codereview.chromium.org/11312185
Patch from Eugene Klyuchnikov <eustas@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12929 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11361217

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12928 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11365175

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12927 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:2398

Review URL: https://chromiumcodereview.appspot.com/11359130

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12926 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org
BUG=160010

Review URL: https://chromiumcodereview.appspot.com/11410031

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12925 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=

Review URL: https://codereview.chromium.org/11358177

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12924 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Updated all tests to use getNotifier or actual object mutation instead of notify, and added tests for new behavior of getNotifier.

Review URL: https://codereview.chromium.org/11369154
Patch from Adam Klein <adamk@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12923 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/11312165

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12921 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/11359127

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12920 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/11361182

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12919 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Bail out of any special-casing in array methods.
Further optimization is possible, but can be left for later.

Review URL: https://codereview.chromium.org/11369151
Patch from Adam Klein <adamk@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12917 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/11362182

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12916 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Covers truncation of holey arrays and defineProperty('length').

Review URL: https://codereview.chromium.org/11369150
Patch from Adam Klein <adamk@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12915 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://codereview.chromium.org/11369135
Patch from Adam Klein <adamk@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12914 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The previous fix wasn't broad enough: it only fixed the reference for a single Context.

Review URL: https://codereview.chromium.org/11361172
Patch from Adam Klein <adamk@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12913 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=

Review URL: https://codereview.chromium.org/11365084

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12912 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Fixed visibility attribute for GetPointerFromInternalField

Heavy cleanup of the external pointer API.

Review URL: https://codereview.chromium.org/11359125

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12911 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=danno@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11369148

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12910 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts, section
15.14.5.3 and 15.14.5.2

BUG=v8:2400

Review URL: https://codereview.chromium.org/11409002
Patch from Erik Arvidsson <arv@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12909 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11368142

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12908 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The name in question is not necessarily a symbol, so we have to use Equals instead of ==.

BUG=http://www.playescapegoat.com/

Review URL: https://codereview.chromium.org/11368141

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12907 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/11293178

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12906 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also handles notification of deleted properties when an array
is truncated by setting length.

Review URL: https://codereview.chromium.org/11338048
Patch from Adam Klein <adamk@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12905 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
TEST=cctest/test-api/IndependentWeakHandle

Review URL: https://codereview.chromium.org/11369131
Patch from Kentaro Hara <haraken@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12904 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Node::class_id_ contains garbage for newly allocated (FREE) nodes. This patch
changes the code to first test the node state_, then (for non-FREE nodes),
class_id_, and not the other way around.

This does not affect the branch taken (i.e. the current code is correct),
but makes Valgrind and MSan happy.

Review URL: https://codereview.chromium.org/11362158
Patch from Evgeniy Stepanov <eugenis@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12903 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This CL has two parts: the first is the logic itself, whereby each observer callback is assigned
a "priority" number the first time it's passed as an observer to Object.observe(), and that
priority is used to determine the order of delivery.

The second part invokes the above logic as part of the API, when the JS stack winds down to
zero.

Added several tests via the API, as the delivery logic isn't testable from a JS test
(it runs after such a test would exit).

Review URL: https://codereview.chromium.org/11266011
Patch from Adam Klein <adamk@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12902 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11358122

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12901 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Details:
- Extend ElementAccessors with GetAttributes method.
- Add HasLocalElement, Get[Local]ElementAttribute methods to JSReceiver/JSObject.
- Otherwise, mirror implementation for named properties.

Cannot correctly handle the cases yet where an accessor is redefined or deleted.

Also fixed handling of object info table.

(Based on CL https://codereview.chromium.org/11362115/)

R=verwaest@chromium.org,mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11365111

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12900 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/11369133

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12899 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

When code objects in the heap for FUNCTIONs and OPTIMIZED_FUNCTIONs are marked by the GC, their prologue is patched with a call to a stub that removes the patch. This allows the collector to quickly identify code objects that haven't been executed since the last full collection (they are the ones that sill contain the patch). The functionality is currently disabled, but can be activated by specifying the "--age-code".

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/10837037

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12898 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is just a rename. After commit, I'll begin with the semantic changes.
Until those are complete, kOneByteStringTag will have the same meaning as
kAsciiStringTag.

BUG=

Review URL: https://chromiumcodereview.appspot.com/11293168
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12897 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This fixes a corner case when the instance prototype of a function is
changed while inobject slack tracking is still in progress. This caused
the intial map to be unrelated for functions with the same shared info
and hence the shared construct stub is no longer generic enough to work
for all those functions.

R=danno@chromium.org
BUG=chromium:157019
TEST=mjsunit/regress/regress-crbug-157019

Review URL: https://codereview.chromium.org/11293059

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12896 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
TEST=none

Review URL: https://codereview.chromium.org/11307012
Patch from Jay Conrod <dconrod@codeaurora.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12895 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This fixes a corner case when the code flusher is disabled while
incremental marking is running. The list of candidates needs to be
evicted to prevent list fragments without a head floating around.

R=ulan@chromium.org
BUG=chromium:159140

Review URL: https://codereview.chromium.org/11366136

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12894 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/11366149

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12893 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Pass the SIGPROF signal on to previously registered signal handler.

Regressions: Unexpected crashes (2)
  inspector/profiler/cpu-profiler-profiling-without-inspector.html
  inspector/profiler/cpu-profiler-profiling.html

R=danno@chromium.org

Review URL: https://codereview.chromium.org/11377052

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12892 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:2077
TEST=cctest/test-api/ApiObjectGroupsCycleForScavenger

Review URL: https://codereview.chromium.org/11312123
Patch from Kentaro Hara <haraken@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12891 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reschedules instructions to better absorb VFP load latency.
BUG=none
TEST=none

Review URL: https://codereview.chromium.org/11363086
Patch from Rajeev Krithivasan <rkrithiv@codeaurora.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12890 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This enables the google-perftools SIGPROF signal handler to continue to work properly.

BUG=none

Review URL: https://codereview.chromium.org/11195045
Patch from William Chan <willchan@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12889 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

plus more accurate distinction of different change types.

Required handlifying more code.

Also fixed a handlification bug in JSProxy::GetElementAttributeWithHandler.

R=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/11362115

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12888 ce2b1a6d-e550-0410-aec6-3dcde31c8c00