Clean up some zone/isolate handling in AST and its visitors on the way.

(Based on https://codereview.chromium.org/103743004/)

R=jkummerow@chromium.org, titzer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/102563004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18719 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/136443006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18663 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Recent changes in IC logic meant that CallStubs no longer use the Contextual bit. IsUndeclaredGlobal() needed to adjust for that.

In fact, now the CL has morphed to remove the notion of storing contextual state in the IC at all, it just becomes some extra ic state of the load ic. This took some adjustment in harmony code to use the global receiver for certain stores.

Now it's clearer that only LoadICs actually record any information about contextual or not.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/140943002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18660 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/137083002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18594 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

The only thing different now is line types.h:208/236, which had a static_cast<Type*> before.

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/133683002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18533 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r18521 and r18522 for breaking mac and win builders.

BUG=
TBR=rossberg@chromium.org

Review URL: https://codereview.chromium.org/132493002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18524 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This is to support both heap- and zone-allocated types in the future (the latter not yet implemented).

Also, handlify the type API some more.

R=titzer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/107933005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18521 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

to be on the global object. Previously, this information
was stored in RelocInfo. A more logical place for this kind
of structural information is ExtraICState. Storing it there
makes it easier for us to gather type feedback from these
sites too.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/96083005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18466 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/106313003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18444 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Revert "Fix compilation with C++11." and "Allocation site support for monomorphic StringAdds in BinaryOps.".

This reverts commit r18431 and r18432 for breaking
the Linux nosnapshot build.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/122463004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18434 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/106453003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18431 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org

Review URL: https://codereview.chromium.org/105313008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18389 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r18246 for tanking all benchmarks.

TBR=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/104243002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18249 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/103933002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18246 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r18228 for crashing on Windows.

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/101663002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18229 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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

Review URL: https://codereview.chromium.org/99173002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18228 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

When computing the code flags for a megamorphic store IC, we mistakenly
passed a strict_mode variable when an ExtraICState was expected.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/98633005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18202 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Previously BinaryOpIC and BinaryOpStub were pretty much interdependent.
However, in order to use allocation sites for string adds on-demand,
we need to be able to use different stubs (with a different number of
register parameters, via trampolines) depending on the BinaryOpIC state.

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

Review URL: https://codereview.chromium.org/97543002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18191 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org

Review URL: https://chromiumcodereview.appspot.com/95503003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18173 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Currently it's in the Code object for some ICs and in ICs for other ICs.
This should make it easier to alter bits as needed.

2) Recover an extra bit in the code object to give us 6 bits for the extra ic state. We'll need it soon to store contextual state.

3) Cleanup code that treated StrictMode enum and ExtraICState enum as interchangeble.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/91803003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18136 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=mvstanton@chromium.org

Review URL: https://chromiumcodereview.appspot.com/91413003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18103 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://chromiumcodereview.appspot.com/78023002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18024 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=rossberg@chromium.org

Review URL: https://chromiumcodereview.appspot.com/75413002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17847 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ishell@chromium.org

Review URL: https://chromiumcodereview.appspot.com/68213024

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17828 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://chromiumcodereview.appspot.com/73893003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17827 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/71783003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17782 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ishell@chromium.org

Review URL: https://chromiumcodereview.appspot.com/70233009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17774 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/68523009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17756 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/62953007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17755 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts commit r17746 for breaking layout tests.

TBR=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/72753002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17751 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=danno@chromium.org

Review URL: https://chromiumcodereview.appspot.com/23537067

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17746 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Add a soft-deopt in keyed element access when current IC is pre-monomorphic and no type feedback was collected.

BUG=
R=danno@chromium.org

Review URL: https://codereview.chromium.org/32643004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17335 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/26873002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17165 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/26831002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17162 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

Also purge invalid POLYMORPHIC stubs. In a next step the compilers should probably be merged and the "Compute*" on the stub-cache removed.

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/25548009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17161 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/26807003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17158 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/25494007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17104 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/25464004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17088 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

This reverts r17052-17054 for various build breaks.

TBR=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/25571002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17055 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/24072013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17052 ce2b1a6d-e550-0410-aec6-3dcde31c8c00