tschatzl [Thu, 28 Jan 2016 13:30:12 +0100] rev 35877
8146987: Improve Parallel GC Full GC by caching results of live_words_in_range()
Summary: A large part of time in the parallel scavenge collector is spent finding out the amount of live words within memory ranges to find out where to move an object to. Try to incrementally calculate this value.
Reviewed-by: tschatzl, mgerdin, jmasa
Contributed-by: ray alex <sky1young@gmail.com>