BUG=v8:3663
LOG=N

Review URL: https://codereview.chromium.org/753993003

Cr-Commit-Position: refs/heads/master@{#25581}

BUG=v8:3730
LOG=N
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/750093003

Cr-Commit-Position: refs/heads/master@{#25579}

R=rossberg@chromium.org,arv@chromium.org
BUG=v8:3330
LOG=N

Review URL: https://codereview.chromium.org/766663003

Cr-Commit-Position: refs/heads/master@{#25555}

Previously, a separate string to be hashed (in order to help determine the need to
use a cached Template Call Site) was built up by joining UTF8 spans within a template.

Now, the hash key is generated from the original spans, removing the need to allocate a new
buffer and copy bytes into it.

BUG=

Review URL: https://codereview.chromium.org/765473006

Cr-Commit-Position: refs/heads/master@{#25549}

a revival of https://codereview.chromium.org/467013003

R=rossberg@chromium.org

BUG=

Review URL: https://codereview.chromium.org/760883002

Cr-Commit-Position: refs/heads/master@{#25537}

R=rmcilroy@chromium.org
BUG=chromium:436510
LOG=N
TEST=compile with V8_OOL_CONSTANT_POOL=1, run d8 with --verify-heap --test

Review URL: https://codereview.chromium.org/759823006

Cr-Commit-Position: refs/heads/master@{#25534}

R=yangguo@chromium.org

BUG=

Review URL: https://codereview.chromium.org/762773002

Cr-Commit-Position: refs/heads/master@{#25518}

R=mvstanton@chromium.org
BUG=chromium:436447

Review URL: https://codereview.chromium.org/756983003

Cr-Commit-Position: refs/heads/master@{#25504}

BUG=chromium:434447

Review URL: https://codereview.chromium.org/755173002

Cr-Commit-Position: refs/heads/master@{#25500}

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/755883003

Cr-Commit-Position: refs/heads/master@{#25499}

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/757983002

Cr-Commit-Position: refs/heads/master@{#25498}

Review URL: https://codereview.chromium.org/751643005

Cr-Commit-Position: refs/heads/master@{#25483}

Review URL: https://codereview.chromium.org/739013004

Cr-Commit-Position: refs/heads/master@{#25482}

This is needed for 64bit alignment sensitive platforms (PowerPC)
Exposed bugs with new GC compare and swap changes updating the
field.

Example failing test:
out/ppc64.debug/cctest  test-decls/ExistsInPrototype

BUG=

Review URL: https://codereview.chromium.org/740443002

Cr-Commit-Position: refs/heads/master@{#25472}

R=ulan@chromium.org
BUG=v8:3229
LOG=N

Review URL: https://codereview.chromium.org/736003002

Cr-Commit-Position: refs/heads/master@{#25457}

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/737373003

Cr-Commit-Position: refs/heads/master@{#25444}

Removed unnecessary generalization of all fields in Map::GeneralizeRepresentation() (introduced in r25082).

This generalization caused unnecessary map deprecation when the transition tree of the split map is full.

BUG=chromium:431807
LOG=N

Review URL: https://codereview.chromium.org/736953003

Cr-Commit-Position: refs/heads/master@{#25427}

Due to performance issue.
TBR=danno@chromium.org

Review URL: https://codereview.chromium.org/735323002

Cr-Commit-Position: refs/heads/master@{#25421}

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/740673002

Cr-Commit-Position: refs/heads/master@{#25416}

Code was vulnerable to different evaluation order in Clang.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/726693004

Cr-Commit-Position: refs/heads/master@{#25397}

This reverts commit d40204f8.

TBR=danno@chromium.org

Review URL: https://codereview.chromium.org/735653003

Cr-Commit-Position: refs/heads/master@{#25393}

We were deopting without learning anything.

BUG=v8:3417
LOG=N
R=danno@chromium.org

Review URL: https://codereview.chromium.org/368263003

Cr-Commit-Position: refs/heads/master@{#25392}

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/726423002

Cr-Commit-Position: refs/heads/master@{#25387}

Review URL: https://codereview.chromium.org/707463002

Cr-Commit-Position: refs/heads/master@{#25367}

BUG=v8:3684
LOG=n

Review URL: https://codereview.chromium.org/726773002

Cr-Commit-Position: refs/heads/master@{#25364}

This reverts the commit because it possibly causes renderer hangs.

BUG=chromium:431807
LOG=N
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/725633002

Cr-Commit-Position: refs/heads/master@{#25338}

Now that we keep track of whether a function contains super we do not
need kDefaultConstructorCallSuper

BUG=None
LOG=Y
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/718833002

Cr-Commit-Position: refs/heads/master@{#25337}

Revert "TransitionArray now uses <is_data_property, name, attributes> tuple as a key, which allows to have several entries for the same property name."
Revert "Fix for an assertion failure in Map::FindTransitionToField(...). Appeared after r25136."

This revert is made in order to revert r25099 which potentially causes renderer hangs.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/722873004

Cr-Commit-Position: refs/heads/master@{#25332}

It started showing after r25253.

BUG=v8:3687
LOG=N
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/715313003

Cr-Commit-Position: refs/heads/master@{#25324}

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/668143003

Cr-Commit-Position: refs/heads/master@{#25321}

1. Global{Context,Scope}=>Script{Context,Scope}
2. Enable fixed tests
3. Update comments

R=rossberg@chromium.org
BUG=v8:2198
LOG=N

Review URL: https://codereview.chromium.org/716833002

Cr-Commit-Position: refs/heads/master@{#25291}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25291 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/711313002

Cr-Commit-Position: refs/heads/master@{#25258}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25258 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

MapCache simplification. It is now a FixedArray that maps number of properties to a WeakCell with a Map.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/712943002

Cr-Commit-Position: refs/heads/master@{#25253}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25253 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Revert "Fixes for Windows and Mac builds after r25250."
TBR=ishell@chromium.org

Review URL: https://codereview.chromium.org/699613004

Cr-Commit-Position: refs/heads/master@{#25252}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This CL introduces LayoutDescriptor which is responsible for tracking which in-object fields are tagged and which are not.
LayoutDescriptor field added to Map. Currently unboxing is disabled.

R=hpayer@chromium.org, verwaest@chromium.org

Review URL: https://codereview.chromium.org/391693002

Cr-Commit-Position: refs/heads/master@{#25250}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25250 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Introduce two new function kind, one for default constructor and one
for default constructor call super. Then when we are about to pares
these we just generate the correct AST in source.

BUG=v8:3661, v8:3672
LOG=Y
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/700523003

Cr-Commit-Position: refs/heads/master@{#25222}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25222 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This implements correct semantics for "extensible" top level lexical scope.
The entire lexical scope is represented at runtime by GlobalContextTable, reachable from native context and accumulating global contexts from every script loaded into the context.

When the new script starts executing, it does the following validation:
- checks the GlobalContextTable and global object (non-configurable own) properties against the set of declarations it introduces and reports potential conflicts.
- invalidates the conflicting PropertyCells on global object, so that any code depending on them will miss/deopt causing any contextual lookups to be reexecuted under the new bindings
- adds the lexical bindings it introduces to the GlobalContextTable

Loads and stores for contextual lookups are modified so that they check the GlobalContextTable before looking up properties on global object, thus implementing the shadowing of global object properties by lexical declarations.

R=adamk@chromium.org, rossberg@chromium.org

Review URL: https://codereview.chromium.org/705663004

Cr-Commit-Position: refs/heads/master@{#25220}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25220 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/694533003

Cr-Commit-Position: refs/heads/master@{#25219}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25219 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r25142.

TBR=ishell@chromium.org

Review URL: https://codereview.chromium.org/702853002

Cr-Commit-Position: refs/heads/master@{#25145}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25145 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/703603003

Cr-Commit-Position: refs/heads/master@{#25142}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25142 ce2b1a6d-e550-0410-aec6-3dcde31c8c00