I had this crazy idea once! . "Since JVM,CLR and the likes are very popular,why not have hardware accelerated GC or a hardware which can execute java bytecode or MSIL ".
May be Microsoft or Oracle should build one as they are heavily invested in GC languages :).
Turns out there are some research and implementaion on this already
https://users.ece.cmu.edu/~omutlu/pub/hamm_isca09.pdf
http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=554101...
https://en.m.wikipedia.org/wiki/Jazelle
A possible answer why this did not go mainstream https://news.ycombinator.com/item?id=12051947