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

This reverts r20729.

TBR=jarin@chromium.org

Review URL: https://codereview.chromium.org/237093003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20732 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts r20721.

TBR=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/234623004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20731 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/234913003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20730 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/236683003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20729 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/236203010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20728 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The files that are excluded do not exist at that location, so the rule
is not effective.

We'll first want to move the platform stuff into a separate library, so
I'm just removing those lines for now

BUG=v8:3015
R=dcarney@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/237053002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20727 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

This reverts r20724.

TBR=jarin@chromium.org

Review URL: https://codereview.chromium.org/237043002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20726 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Rounding mode should be round-to-nearest by default, and NaN mode bit
should be 0, like in a real ARM system.

BUG=3253
LOG=N
R=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/235893005

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

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20725 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/235643002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20724 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=362128
LOG=Y
TEST=mjsunit/regress/regress-362128
R=jacob.bramley@arm.com

Review URL: https://codereview.chromium.org/226363007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20723 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/236963002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20722 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/236943002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20721 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/235453010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20720 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts r20718.

TBR=jarin@chromium.org

Review URL: https://codereview.chromium.org/236343005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20719 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/236133005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20718 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org
TEST=mjsunit,test262,webkit

Review URL: https://codereview.chromium.org/233083003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20717 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/234573005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20716 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Instead, inspect the label chain and delete pending information for every branch
in the chain.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/227043010

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20715 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The EnsureSpace scope must not trigger any code emission, so it should only grow
the buffer, and not check for pools.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/230223005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20714 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=jarin@chromium.org

Review URL: https://codereview.chromium.org/227303005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20713 ce2b1a6d-e550-0410-aec6-3dcde31c8c00