Motivation is that x64 nosnapshot builds need a 129 byte delta at the moment.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/237673007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20776 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r20772.

TBR=jarin@chromium.org

Review URL: https://codereview.chromium.org/239273002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20775 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r20746 (09f9176)

Original commit message:
This is an initial step towards tracking the exact types instead of just
the representations of fields. It adds support to track up to one map of
heap object field values, eliminating various map checks on values
loaded from such fields, at the cost of making stores to such fields
slightly more expensive.

Issues with transitioning stores and fast object literals in Crankshaft
fixed.

TEST=mjsunit/field-type-tracking
BUG=
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/238943002

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

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20774 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/239133002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20773 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/239113002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20772 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This fixes accesses in ARM and ARM64; the field is a bool, with size 1,
but we were accessing it with pointer-sized loads and stores.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/230553004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20771 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/239173002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20770 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/238113003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20769 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/238273005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20768 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=dcarney@chromium.org, yangguo@chromium.org

Review URL: https://codereview.chromium.org/231973004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20767 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org
TEST=mjsunit/regress/regress-builtinbust-5

Review URL: https://codereview.chromium.org/239033002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20766 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/238583004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20765 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/238993002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20764 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/238983002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20763 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Function allocators, Heap::ReinitializeJSGlobalProxy() and Heap::ReinitializeJSReceiver() handlified. Factory::New<>() added.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/237093006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20762 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/238543004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20761 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/238273006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20760 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=359977
LOG=y
R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/238773003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20759 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/238933002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20758 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/238713003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20757 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/236193014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20756 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Setting the FPSCR flags is expensive on some CPUs. Get rid of repeated
setting of the FPSCR by relying on the correct default flags being set
when doing uint8 clamping. Also use vcvt_u32_f64 instead of vcvt_s32_f64,
which enables removing the check against zero (vcvt_u32_f64 will clamp to
zero).

To be on the safe side, add asserts to check that the VFP rounding mode
flags are set to default as expected.

This increases performance of a hot loop repeatedly setting
Uint8ClampedArray values on some CPUs by as much as a factor of 12.

BUG=v8:3253
LOG=N
R=jacob.bramley@arm.com, rmcilroy@chromium.org, ulan@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=20676

Review URL: https://codereview.chromium.org/230473005

Patch from Olli Etuaho <oetuaho@nvidia.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20755 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/238683004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20754 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

BUG=

Review URL: https://codereview.chromium.org/238843002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20753 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

It was a pretty monstrous 500 line function.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/237243003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20752 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=353058
LOG=N
TEST=mjsunit/regress/regress-353058
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/236633006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20751 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/237253002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20750 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/235923013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20749 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org
BUG=363280
LOG=N

Review URL: https://codereview.chromium.org/238753003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20748 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Some first steps towards removing the default Isolate. Fixed argument
order on the way, incl. temporary helpers.

BUG=359977
LOG=y
R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/238803002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20747 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is an initial step towards tracking the exact types instead of just
the representations of fields. It adds support to track up to one map of
heap object field values, eliminating various map checks on values
loaded from such fields, at the cost of making stores to such fields
slightly more expensive.

Issues with transitioning stores and fast object literals in Crankshaft
fixed.

TEST=mjsunit/field-type-tracking
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/238773002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20746 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/236613006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20745 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The intent of these calls was to properly key the WeakMap get/set calls
on the underlying global object, not the proxy, since that is the object
actually being observed. But unwrapping at this layer is unnecessary
since GetIdentityHash will already do the unwrapping (via its call to
GetHiddenProperty).

Also remove the runtime function itself, as these were the only callers,
and remove the now-redundant IS_SPEC_OBJECT() checks from object-observe.js's
MapWrapper type.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/234143002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20740 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jarin@chromium.org

Review URL: https://codereview.chromium.org/237013003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20739 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/236823003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20738 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/236833009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20737 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ishell@chromium.org

Review URL: https://codereview.chromium.org/237143004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20736 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/236983002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20735 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Reland "HashTable::Shrink() handlified and derived template parameter added to HashTable hierarchy."

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/227423004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20734 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/237143002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20733 ce2b1a6d-e550-0410-aec6-3dcde31c8c00