First implementation of store elimination.

BUG=
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/100253004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20224 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Reland "No longer OOM on invalid string length."

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/210683003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20225 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Reland of "FastElementsAccessor::SetLengthWithoutNormalize() handlified."

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/210563003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20227 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix issues when changing FLAG_concurrent_recompilation after init.

R=jarin@chromium.org
BUG=356053
LOG=N

Review URL: https://codereview.chromium.org/210363005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20228 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Callers of ElementsAccessor::SetCapacityAndLength() handlified.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/210063004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20229 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Handlify GetElementWithReceiver and GetElementWithInterceptor.

R=ishell@chromium.org

Review URL: https://codereview.chromium.org/210763003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20230 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Only assign environments when they are actually needed. (ia32 only)

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/210783003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20231 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
ARM64: Optimize RegList::IsValid() to speed up simulation in (opt)debug mode.

On my machine this improves the simulation speed noticeably.
| test               | base  | patched |
|--------------------|-------|---------|
| optdebug           | 15:37 | 11:07   |
| debug --quickcheck | 33:53 | 26:14   |

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/209353010

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20232 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "Ship promises and weak collections"

Reason: breaks Blink layout tests.

R=machenbach@chromium.org
BUG=

Review URL: https://codereview.chromium.org/210853003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20233 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix for GCMole issue.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/210963002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20234 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Extend GCMole to cover ARM64 architecture.

R=ishell@chromium.org
BUG=

Review URL: https://codereview.chromium.org/210973003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20237 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Do not left-trim arrays when concurrent sweeping is active.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/207613004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20238 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Roll ICU 239289:258359 and add support for external ICU data tables

The only binary that supports ICU data tables is d8. The location of the
data table file has to be passed via a command line switch:

  $ out/x64.optdebug/d8 --icu-data-file=out/x64.optdebug/icudtl.dat

BUG=72633,v8:3142
R=danno@chromium.org
LOG=y

Review URL: https://codereview.chromium.org/209323014

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20239 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'