MIPS : Collect type feedback for power-of-2 right operands in BinaryOps.

Port r14928 (a2e0e18)

Original commit message:
Improved --trace-ic output for unary/binary ops a bit on the way. Moved int32_t/uint32_t conversion helpers around.

BUG=

Review URL: https://codereview.chromium.org/16361004
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14941 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Deprecate FACTORY helper macro.

Port r14931 (a914442)

Original commit message:
This removes the FACTORY helper macro to avoid accidental TLS access
when using the factory. Most internal code has access to the Isolate by
now whereas tests which are not performance critical still heavily use
TLS access through explicit Isolate::Current() calls.

BUG=

Review URL: https://codereview.chromium.org/15994011
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14942 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Turn off allocation site info for crankshafted array constructor calls.

Port r14934 (dbddd7e)

Original commit message:
Once we crankshaft a method, we should turn off allocation site info for
constructed arrays. Additionally, the semantics for doing this were
awkward because the constructed array code stubs get an
AllocationSiteMode as a minor key, but it's used as a permission to
determine the final mode locally based on ElementsKind. I refactored
this to a simpler boolean for override or local control.

BUG=

Review URL: https://codereview.chromium.org/16226020
Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14943 ce2b1a6d-e550-0410-aec6-3dcde31c8c00