8217170: gc/arguments/TestUseCompressedOopsErgo.java timed out Summary: Disable ZapUnusedHeapArea and VerifyBeforeExit for gc/arguments tests. Reviewed-by: tschatzl, tonyp

Merge

8227117: normal interpreter table is not restored after single stepping with TLH Reviewed-by: sspitsyn, eosterlund, dholmes, coleenp

8224741: Optimize the scan area during the Scan Heap Roots phase Summary: When scanning card blocks, remember the last address already scanned. Continue scanning from this address. Reviewed-by: kbarrett, lkorinth

8227327: Shenandoah: Faster and more parallel tests Reviewed-by: rkennke

Merge

8226627: assert(t->singleton()) failed: must be a constant Summary: Implemented constant folding for MaxFD, MinFD. Reviewed-by: thartmann, bsrbnd, pli

8227175: ZGC: ZHeapIterator visits potentially dead objects Reviewed-by: zgu, eosterlund

8227083: ZGC: C2: Generates on_weak barrier for WeakCompareAndSwap Reviewed-by: neliasso, eosterlund

8225770: ZGC: C2: Generates on_weak instead of on_strong barriers Reviewed-by: neliasso, eosterlund

8227055: Minor edits to launcher help text Reviewed-by: mchung

8226963: More clarification on possible sequencing error in GSSContext::unwrap Reviewed-by: mullan

8227061: KDC.java test behaves incorrectly when AS-REQ contains a PAData not PA-ENC-TS-ENC Reviewed-by: mullan

8227124: "could not open pipe" error does not report error details Reviewed-by: sspitsyn, cjplummer

8225239: Refactor NetworkInterface lookups Reviewed-by: michaelm, dfuchs, chegar

8226409: Enable argument profiling for sun.misc.Unsafe.put*/get* Reviewed-by: kvn