-RM-209-MR-optimise "mov.s"
it’s the most widely used opcode, and hence should be splitted.
for example one short (2 bytes) opcode for ra<-rb (xxxx xxxx aaaa
bbbb)
Do some statistics on which move are the most used before.
And have some number/stats on the performance gain.
(from redmine: issue id 209, created on 2007-07-29)