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

Need to reproduce wrong result only occurring with ASAN.

TBR=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/236873002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20712 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=bmeurer@chromium.org, mvstanton@chromium.org

Review URL: https://codereview.chromium.org/235943007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20711 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Tests for verifying that we deal correctly with shrinking transition
arrays while allocating a copy of one.

Also, we can rely on a transition array only shrinking and not
disappearing during gc while copying one.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/232883003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20710 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

State of the art:
- Chromium doesn't do a separate preparsing phase any more.
- We start parsing with Parser, and when it sees a lazy function, it falls back
to PreParser for that function.
- The symbol data should contain symbols which are *outside* lazy functions.
- So Parser should always produce symbol data, and PreParser should never.
- Because it's this simple now, we don't need to keep track of "should
produce symbol data" (i.e., whether we're inside a lazy func or not).

R=ulan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/222123003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20707 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Fixes size approximation in Intersect. Also lowers the number of fuzzed types in test, to address time-outs.

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/226523004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20706 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=jarin@chromium.org, ishell@chromium.org

Review URL: https://codereview.chromium.org/235943006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20705 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Revert r20701.

TBR=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/236843002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20704 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/234953002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20703 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=dcarney@chromium.org
LOG=n
BUG=none

Review URL: https://codereview.chromium.org/230553003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20702 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.

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

Review URL: https://codereview.chromium.org/167303005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20701 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

This reverts commit r20697 for breaking ASAN build.

TBR=yangguo@chromium.org

Review URL: https://codereview.chromium.org/235353003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20698 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/234663004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20697 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/232463005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20696 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Reason: mjsunit/regress/regress-353058 failure on GC-stress.

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/234813004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20695 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/234873004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20694 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/235183002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20693 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/215853005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20692 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Handlify GetNormalizedProperty.

BUG=360733
LOG=N
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/233243005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20691 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

When a non-configurable, non-writable field is
read from a constant holder, the load is
eliminated and replaced with the direct value
of the field

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/232853002

Patch from Petka Antonov <p.antonov@partner.samsung.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20690 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/235083002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20689 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Port r20669 (29a6ec29)

Note:
This commit fixes a typo.

BUG=
R=danno@chromium.org

Review URL: https://codereview.chromium.org/234993003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20688 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts r20684.

TBR=rossberg@chromium.org

BUG=

Review URL: https://codereview.chromium.org/235133002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20687 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

* And contain knowledge better in TransitionArray and DescriptorArray (for example WhitenessWitness is now private to DescriptorArray).
* And remove some factory methods
* And handlify some other things.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/234783002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20686 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts r20682.

TBR=dcarney@chromium.org

Review URL: https://codereview.chromium.org/234893003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20685 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Some fixes of corner cases on the way

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/230923005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20684 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The new compilation API (ScriptCompiler::Compile) can produce the same data, so
the separate precompilation phase is not needed. ScriptData is replaced by
ScriptCompiler::CachedData.

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/225753004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20683 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/233233004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20682 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

TBR=ishell@chromium.org

Review URL: https://codereview.chromium.org/235003002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20681 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/231883007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20680 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Maps in monomorphic Load, KeyedLoad, Store, KeyedStore, and CompareNil IC
stubs are treated as weak references by the marking visitor.

During generation of an IC stub with a weak map, the stub is appended to the
dependent code array of the map. When the map dies, all stubs in its dependent
code array are invalidated by setting embedded maps to undefined.

BUG=v8:2073
LOG=Y
TEST=cctest/test-heap/WeakMapInMonomorphic*IC
R=mstarzinger@chromium.org, verwaest@chromium.org

Review URL: https://codereview.chromium.org/188783003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20679 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r20676.

TBR=danno@chromium.org

Review URL: https://codereview.chromium.org/233013005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20678 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/234743003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20677 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

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

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20676 ce2b1a6d-e550-0410-aec6-3dcde31c8c00