Limit size of dehoistable array indices

LOG=Y
BUG=chromium:319835,chromium:319860
R=dslomov@chromium.org

Review URL: https://codereview.chromium.org/74113002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17801 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Reland and fix "Add support for keyed-call on arrays of fast elements”.

Port r17782 (32e3232)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/74013002

Patch from Balazs Kilvady <kilvadyb@homejinni.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17802 ce2b1a6d-e550-0410-aec6-3dcde31c8c00