master
8315082: [REDO] Generational ZGC: Tests crash with assert(index == 0 || is_power_of_2(index))
8302873: ZGC: dump barrier data in C2 Mach nodes
8301224: Replace NULL with nullptr in share/gc/shared/
8267726: ZGC: array_copy_requires_gc_barriers too strict
8212243: More gc interface tweaks for arraycopy