8228720: Shenandoah: Implementation of concurrent class unloading Reviewed-by: rkennke

8234781: Update description of InvalidClassException to include more conditions Reviewed-by: alanb, chegar

8223378: CSS solution for navbar problem with <a> elements is not ideal Reviewed-by: jjg

8141637: Parallelize single threaded heap region iteration during Pre Evacuate Collection Set Reviewed-by: tschatzl, lkorinth

8234897: 8234748: Clean up atomic and orderAccess includes - part 2 Reviewed-by: tschatzl, dholmes

8220376: C2: Int >0 not recognized as !=0 for div by 0 check Reviewed-by: neliasso, vlivanov, mdoerr

8234748: Clean up atomic and orderAccess includes Reviewed-by: dholmes

Merge

8233301: Implementation of JEP 366: Deprecate the ParallelScavenge + SerialOld GC Combination Summary: Deprecate the ParallelScavenge + SerialOld GC combinations by deprecating the UseParallelOldGC flag. Also reviewed by Bernd Eckenfels<ecki@zusammenkunft.net>. Reviewed-by: pliden

8234525: enable link-time section-gc for linux s390x to remove unused code Reviewed-by: erikj, mdoerr

8234809: set relro in linker flags when building with gcc Reviewed-by: erikj, fweimer

8231826: Implement javac changes for pattern matching for instanceof Reviewed-by: mcimadamore Contributed-by: brian.goetz@oracle.com, gavin.bierman@oracle.com, maurizio.cimadamore@oracle.com, srikanth.adayapalam@oracle.com, vicente.romero@oracle.com, jan.lahoda@oracle.com

8230765: Implement nmethod barrier for x86_32 platforms Reviewed-by: rkennke, eosterlund

8233500: Shenandoah: Shenandoah load barrier should save registers before calling keep alive barrier on x86 Reviewed-by: rkennke

8234539: ArchiveRelocationTest.java failed: Archive mapping should always succeed Reviewed-by: ccheung

8234535: Cross compilation fails due to missing CFLAGS for the BUILD_CC Reviewed-by: erikj

8234610: MaxVectorSize set wrongly when UseAVX=3 is specified after JDK-8221092 Reviewed-by: kvn, vlivanov

Merge

8234394: C2: Dynamic register class support in ADLC Reviewed-by: vlivanov, sviswanathan, thartmann, kvn

8234387: C2: Better support of operands with multiple match rules in AD files Reviewed-by: vlivanov, sviswanathan, thartmann, dlong

8234403: C2: Enable CallSite.target updates in constructors Reviewed-by: psandoz, kvn

8234401: ConstantCallSite may stuck in non-frozen state Reviewed-by: psandoz

8233870: JFR TestSetEndTime.java times out - onClose() is never called Reviewed-by: mgronlun

8234613: JavaThread can escape back to Java from an ongoing handshake Summary: Check again if we have a pending/in-progress handshake operation after executing ~ThreadInVMForHandshake() Reviewed-by: coleenp, dcubed, dholmes, rehn

Metadatatype back to metaspace.hpp to reduce patch size

Improve BLA and LOM tests

8234768: Shenandoah: Streamline enqueueing runtime barriers Reviewed-by: zgu

8234270: [REDO] JDK-8204128 NMT might report incorrect numbers for Compiler area Reviewed-by: stuefe, minqi

8234798: Build failure after atomic changes in JDK-8234563 Reviewed-by: tschatzl, rkennke, zgu

8234619: ZGC: gc/z/TestSmallHeap.java failure with Out Of Memory Reviewed-by: tschatzl, eosterlund

Merge

8234729: Javac should eagerly change code generation for method references to avert IllegalAccessError in future. Reviewed-by: mcimadamore