Rosalloc fast path in assembly for MIPS32

Tested with GCBench (http://hboehm.info/gc/gc_bench/GCBench.java):

Measurements (less is better):
	11546 -> 10730 [ms] (7.1%)

Change-Id: Ie00442314b18295e68c2e91251e6dcf8c2a8eae2
1 file changed