MIPS: Make HTypeofIsAndBranch accept any representation input

Port r17834 (cf97fcb6)

Original commit message:
Make HTypeofIsAndBranch accept any representation input
when the input is known unbox number value, eliminate the dynamic check

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/75943002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17852 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Convert PatchCache (and related methods) to use types rather than objects/maps.

Port r17847 (67c371a4)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/75953002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17853 ce2b1a6d-e550-0410-aec6-3dcde31c8c00