MIPS: Fix bug that prevents JALR to JAL optimizations.

TEST=

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/23072023

Patch from Dusan Milosavljevic <Dusan.Milosavljevic@rt-rk.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16252 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Use CheckUsesForFlag to check flag in uses list

BUG=
R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/22862009

Patch from Weiliang Lin <weiliang.lin2@gmail.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16253 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Improve detection of C++11 features.

Also improve detection of V8_INFINITY while we're at it.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/23323003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16254 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Adding missing operator!= for Handle and Persistent.

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/22932004

Patch from Marja Hölttä <marja@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16255 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Prepare push to trunk.  Now working on version 3.21.2.

R=hpayer@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/23242009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16256 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Cleanup FooSpace::VerifyObject and ElementsAccessor::Validate.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/23273004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16259 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Pass checked values to HLoadNamedField, removing the need for extra type-check field.

R=titzer@chromium.org

Review URL: https://chromiumcodereview.appspot.com/22831003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16260 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Allow both "--no<flag>" and "--no-<flag>" to disable <flag>.

We shouldn't need to know whether to use --no or --no- as prefix.
The latter is more intuitive and also what chromium uses.

R=machenbach@chromium.org
BUG=

Review URL: https://codereview.chromium.org/22851009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16261 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix "Hole" leak in TryBuildConsolidatedElementLoad

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/23361007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16262 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Fix migration checks and extend them to the Scavenger.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/23060018

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16265 ce2b1a6d-e550-0410-aec6-3dcde31c8c00