8026796: Make replace_in_map() on parent maps generic Summary: propagate node replacements along control flow edges to callers Reviewed-by: kvn, vlivanov

8033626: assert(ex_map->jvms()->same_calls_as(_exceptions->jvms())) failed: all collected exceptions must come from the same place Reviewed-by: kvn, roland

8033145: Runtime1::arraycopy_count_address uses wrong _oop_arraycopy_cnt variable Summary: The method Runtime1::arraycopy_count_address(..) returns the address of Runtime::_oop_arraycopy_cnt instead of the the file static variable _oop_arraycopy_cnt. Reviewed-by: roland, kvn, twisti

8044673: Create jtreg groups to list GC specific tests Reviewed-by: dholmes, iignatyev Contributed-by: dmitry.fazunenko@oracle.com

Merge

8042298: Remove the names gen0 and gen1 from the GC code Summary: Renamed gen0 and gen1 to young and old throughout the GC code. Reviewed-by: sjohanss, jcoomes

8026396: Remove information duplication in the collector policy Summary: Cleaned up the usage of flags in collector policy. Reviewed-by: sjohanss, jcoomes

8046275: Fastdebug build failing on jdk9/hs/ control jobs after pulling some hs-comp changes Summary: Add missing check for Opaque nodes from loop predicates in clone_loop(). Reviewed-by: iveresov

8046226: assert(_thread == Thread::current()) failed: thread must be current w/ -XX:+TraceDeoptimization -XX:+Verbose Reviewed-by: twisti, dcubed, fparain

Merge