removed some possible floating pint arithmetic
Changed uint32mem to int32mem. This removed a lot of floating point arithmetic.
pc is defined as signed int
removed dimorphic and polymorphic variables
changed rD to rindex. group1 and group2 are used as signed ints
removed more double arithmetic
Removed some checks for RAM access. Javascript will stop anyway.
Removed comment and optimized instlb
Added stats to see ips