As example there are 'Detached DOM Tree' nodes in WebKit. It is very useful to be able to see all such
nodes grouped together. It can be done with help of some post processing but I did this explicitly
on v8 side because it is much faster. At the moment this kind of nodes has kNative type.
I'd like to hide these nodes from the Retainment View but I can filter them only by name.

BUG=none
TEST=HeapSnapshotRetainedObjectInfo

Review URL: https://chromiumcodereview.appspot.com/9323064

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10614 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

For zone lists this avoids resizing and reduces overall allocation
in most cases (especially for small lists).
Review URL: https://chromiumcodereview.appspot.com/9323078

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10613 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/9307122

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10612 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/9317119

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10611 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is just an intermediate step to remove IsRealProperty.

Review URL: https://chromiumcodereview.appspot.com/9325060

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10610 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/9309118

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10609 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

In optimized x64 code, the check for minus zero after multiplication
used the wrong size bit-or instruction (64-bit instead of 32-bit).

TEST=mjsunit/numops-fuzz.js
Review URL: https://chromiumcodereview.appspot.com/9316127

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10606 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=danno@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9317116

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10605 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=v8:1932
TEST=

Review URL: https://chromiumcodereview.appspot.com/9307116

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10604 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Implicit references reported to V8 with V8::AddImplicitReferences calls are now reported by heap profiler as 'native' references with type kInternal.

Original WebKit bug report: https://bugs.webkit.org/show_bug.cgi?id=77414
Review URL: https://chromiumcodereview.appspot.com/9316092

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10603 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Cast intptr_t to int in PrintFs.

TBR=erik.corry@gmail.com

Review URL: https://chromiumcodereview.appspot.com/9325028

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10602 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Increase slots buffer chain length to 15 to make compaction more aggressive and usefull.

Pass gc and collector selection reasons to GCTracer to allow more meaningull --gc-trace.

Print fragmentation of spaces that we do not compact.

R=erik.corry@gmail.com

Review URL: https://chromiumcodereview.appspot.com/9323007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10601 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

With the upcoming changes to CALLBACKS properties, a predicate on the transition
type alone doesn't make sense anymore: For CALLBACKS one has to look into the
property's value to decide, and there is even the possibility of having a an
accessor function *and* a transition in the same property.

I am not completely happy with some parts of this CL, because they contain
redundant code, but given the various representations we currently have for
property type/value pairs, I can see no easy way around that. Perhaps one can
improve this a bit in a different CL, the current diversity really, really hurts
productivity...

As a bonus, this CL includes a few minor things:

 * CaseClause::RecordTypeFeedback has been cleaned up and it handles the
   NULL_DESCRIPTOR case correctly now. Under some (very unlikely) circumstances,
   we previously missed some opportunities for monomorphic calls. In general, it
   is rather unfortunate that NULL_DESCRIPTOR "shines through", it is just a
   hack for the inability to remove a descriptor entry during GC, something
   callers shouldn't have to be aware of.

 * DescriptorArray::CopyInsert has been cleaned up a bit, preparing it for later
   CALLBACKS-related changes.

 * LookupResult::Print is now more informative for CONSTANT_TRANSITION.

Review URL: https://chromiumcodereview.appspot.com/9320066

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10600 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/9323004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10599 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=svenpanne@chromium.org
Review URL: https://chromiumcodereview.appspot.com/9309079

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10598 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

1. Instead of checking upfront and estimating a limit for the number, we
now are able to stop register allocation and bailout when we don't
have enough virtual registers.

2. GCed some out-dated flags from flag-definition.h

3. Simplified the interface from the Lithium builder to the
register allocator in lithium-*.cc: For uses and definitions, we
just record the virtual register number given by the Hydrogen value id.
For temporaries, we request a new virtual register from the allocator.
For fixed temps, we don't need to do anything.

4. Increased number of deoptimization entries to 16K. Eventually we
probably want to make this array grow dynamically.
Review URL: https://chromiumcodereview.appspot.com/9325019

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10597 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/8803024
Patch from David Pacheco <dap@joyent.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10596 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9307065

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10593 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9315055

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10592 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/9323002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10591 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Leak of 16 bytes in 1 objects allocated from:
	@ 8c06b85 v8::internal::NativeObjectsExplorer::FindOrAddGroupInfo

BUG=112315
TEST=heapcheck build

Review URL: https://chromiumcodereview.appspot.com/9307050

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10590 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9307056

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10589 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This allows one to spot fragmentation issues just by looking at --trace-gc output.

R=erik.corry@gmail.com

Review URL: https://chromiumcodereview.appspot.com/9316060

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10584 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=none
TEST=3d-cube faster

Review URL: https://chromiumcodereview.appspot.com/9235007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10583 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Runtime_DebugEvaluate creates an empty context which is not correctly handled in FullCodeGenerator::ContextSlotOperandCheckExtensions because the corresponding scope indicates that it has no context.

BUG=crbug.com/107996
TEST=test/mjsunit/regress/regress-crbug-107996.js

Review URL: https://chromiumcodereview.appspot.com/9310027

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10582 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9307038

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10581 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9310001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10580 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

traversing none type targets. In preparation for a gyp change to the default
behavior.

BUG=None
TEST=None
R=ager@chromium.org

Review URL: https://chromiumcodereview.appspot.com/7616013
Patch from Brad Nelson <bradnelson@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10579 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/9223016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10578 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9315027

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10575 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r10570 (aa5a8c8e)

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9318005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10574 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Uses of a value are weighted by a factor of FLAG_loop_weight (default: 10) for
every loop they are in. This makes uses in inner loops "more important", which
should improve the result of the representation inference.

Review URL: https://chromiumcodereview.appspot.com/8277031

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10573 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

We don't need to store the full representation for each value. Instead
a bit to indicate tagged/untagged is enough.
Review URL: http://codereview.chromium.org/9104042

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10572 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: http://codereview.chromium.org/9301040

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10571 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=http://code.google.com/p/v8/issues/detail?id=1923
TEST=none

Review URL: https://chromiumcodereview.appspot.com/9264039

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10570 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

on Windows.
Review URL: https://chromiumcodereview.appspot.com/9104039

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10569 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r10541 (0aab14ba).

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9296046
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10568 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r10538 (21c5dc1).

MIPS-specific changes:
-moved MacroAssembler::SmiTagCheckOverflow definition to macro-assembler-mips.cc from the header
-added optimized 3-argument version of said function
-removed the related, completely unused TrySmiTag function

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9296045
Patch from Daniel Kalmar <kalmard@homejinni.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10567 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=vegorov@chromium.org
TEST=mjsunit/regress/regress-1229

Review URL: https://chromiumcodereview.appspot.com/9303032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10566 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Review URL: https://chromiumcodereview.appspot.com/9303030

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10565 ce2b1a6d-e550-0410-aec6-3dcde31c8c00