master
8307058: Implementation of Generational ZGC
8307806: Rename Atomic::fetch_and_add and friends
8216167: Update include guards to reflect correct directories
8301506: Replace NULL with nullptr in os_cpu/linux_ppc
8288752: Split thread implementation files
8221554: aarch64 cross-modifying code
8319233: AArch64: Build failure with clang due to -Wformat-nonliteral warning
8290840: Refactor the "os" class
8269853: Prefetch::read should accept pointer to const
8283326: Implement SafeFetch statically