ARM: build fix for r19380.

This commit fixes the debug build on Linux with gcc 4.6.3 and 4.7.2.

Port r19381 (5476e11b)

BUG=
R=dcarney@chromium.org, plind44@gmail.com

Review URL: https://codereview.chromium.org/167523003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19398 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Do not visit smis in the root list during GC.

R=mstarzinger@chromium.org
BUG=328804
LOG=N

Review URL: https://codereview.chromium.org/166023003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19400 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Add a premonomorphic state to the call target cache.

From a CL by kasperl: https://codereview.chromium.org/162903004/

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/163413003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19402 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
A64: Tidy up Push and Pop TODOs.

This addresses several TODOs:
  - Push and Pop requests can be queued up so that arrays of Registers
    can be pushed efficiently, with just one PrepareForPush/Pop.
  - PushMultipleTimes now takes an Operand. This allows variable-length
    arguments arrays to be initialized, for example.
  - A NoUseRealAbortsScope has been added to Abort so that
    AssertStackConsistency can be called from PrepareForPush without
    introducing infinite recursion.

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/169533002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19403 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Added a special stack guard to deopt marked allocation sites.

BUG=
R=mvstanton@chromium.org, ulan@chromium.org

Review URL: https://codereview.chromium.org/169563002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19404 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove arch specific api callback generate functions

R=verwaest@chromium.org

BUG=

Review URL: https://codereview.chromium.org/169353002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19406 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix heap snapshot crash when JSArrayBuffer has no backing_store.

LOG=N
BUG=344239
R=dslomov@chromium.org, yurys@chromium.org

Review URL: https://codereview.chromium.org/169393004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19407 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
A64: Make simulator compiler with optdebug

For some reason, the compiler cannot deduce the array bounds in opt
debug mode. An explicit check makes it happy.

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

Review URL: https://codereview.chromium.org/169473003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19408 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Allow ICs to be generated for own global proxy.

R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/166233004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19409 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Handlify DescriptorArray::Merge().

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/169363002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19410 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Cleanup the double field tracking in Hydrogen.

Use a dedicated BuildLoadNamedField() with PropertyAccessInfo,
similar to BuildStoreNamedField() for optimized graph building,
and a dedicated BuildLoadNamedField() for the code stubs, and
don't depend on FLAG_track_double_fields during code generation.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/168583006

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19411 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Revert "Add a premonomorphic state to the call target cache."

This reverts commit r19402

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/169713002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19412 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Support elements transitions in load elimination

BUG=
R=titzer@chromium.org

Review URL: https://codereview.chromium.org/167893007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19413 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/bleeding_edge' into bleeding_edge