8232135: Add diagnostic output to test java/util/ProcessBuilder/Basic.java Reviewed-by: lancea

8231427: Warning cleanup in tests of java.io.Serializable Reviewed-by: darcy, lancea

8225654: rework vmTestbase/jit/graph Reviewed-by: thartmann, neliasso

8231659: [JVMCI] Could not work PrintAssembly for JVMCI installed code Reviewed-by: ysuenaga

8232120: com/sun/jdi/InvokeTest fails with -Xcheck:jni: assert(k->is_instance_klass()) failed: cast to InstanceKlass Summary: Should have allowed recv klass to be an array. Reviewed-by: hseigel, dcubed

8231717: Improve performance of charset decoding when charset is always compactable Reviewed-by: rriggs, redestad, alanb

8232167: Visual Studio install found through --with-tools-dir value is discarded Reviewed-by: erikj, ihse

8232134: Change to Visual Studio 2017 15.9.16 for building on Windows at Oracle Reviewed-by: ihse

8232133: Change to GCC 8.3 for building on Linux at Oracle Reviewed-by: kbarrett, dholmes, ihse

8232116: ZGC: Remove redundant ZLock in ZNMethodTable Reviewed-by: stefank, pliden

8232046: AArch64 build failure after JDK-8225681 Reviewed-by: eosterlund

8231769: Test tools/javac/tree/MakeTypeTest.java fails with -Xcheck:jni Summary: Delete local jni handles in create_from_platform_dependent_str() after upcall to Java. Reviewed-by: dholmes, hseigel

8232151: Minimal VM build broken after JDK-8232050 Reviewed-by: dholmes, clanger

8196969: JTreg Failure: serviceability/sa/ClhsdbJstack.java causes NPE Summary: Account for serialized null scopes in NMethod Reviewed-by: aph, never

8231956: Remove seq_add_card/reference from PerRegionTable class Reviewed-by: sjohanss, pliden