MIPS: Inline zero argument array constructor.

Port r17741 (fe14ef8)

Original commit message:
patch from issue 54583003 (dependent code).

Zero arguments - very easy

1 argument - three special cases:
a) If length is a constant in valid array length range,
no need to check it at runtime.
b) respect DoNotInline feedback on the AllocationSite for
cases that the argument is not a smi or is an integer
with a length that should create a dictionary.
c) if kind feedback is non-holey, and length is non-constant,
we'd have to generate a lot of code to be correct.
Don't inline this case.

N arguments - one special case:
a) If a deopt ever occurs because an input argument isn't
compatible with the elements kind, then set the
DoNotInline flag.

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/72893003

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17759 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
MIPS: Remove unused LoadNumber* from macro assembler.

Port r17748 (595bed6)

BUG=
R=plind44@gmail.com

Review URL: https://codereview.chromium.org/70233011

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

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17760 ce2b1a6d-e550-0410-aec6-3dcde31c8c00