Summary: Improve the nmethod unloading times by optimizing the search for an itable stub in VtableStubs array
Reviewed-by: kvn, coleenp, tschatzl

Summary: Inform G1's SATB that a klass has been resurrected and it should not be unloaded
Reviewed-by: coleenp, tschatzl, kbarrett

Reviewed-by: dholmes, erikj

8156137: SIGSEGV in ReceiverTypeData::clean_weak_klass_links
8057570: RedefineClasses() tests fail assert(((Metadata*)obj)->is_valid()) failed: obj is valid
Reviewed-by: coleenp

Summary: remove speculative traps that point to methods that are redefined
Reviewed-by: kvn, twisti

8087291: InitialBootClassLoaderMetaspaceSize and CompressedClassSpaceSize should be checked consistent from MaxMetaspaceSize
Reviewed-by: dholmes, sspitsyn, poonam

Summary: Don't split if all edges will be moved to new phi
Reviewed-by: kvn

Reviewed-by: jrose, coleenp, ahgross, acorn, vlivanov

Reviewed-by: kvn

Summary: Set UseLoopCounter ergonomically if on-stack-replacement is enabled. Print warning.
Reviewed-by: kvn

Summary: CCP computes wrong type for CountedLoop iv Phi
Reviewed-by: kvn

Summary: Check for possible null-point dereference.
Reviewed-by: kvn

6651256: jstack: DeleteGlobalRef method call doesn't lead to descreasing of global refs count shown by jstack
Summary: jni_DeleteGlobalRef does not really release the jni handle, instead, set the handle point to JNIHandles::_deleted_handle which holds an oop instance (java/lang/Object) in Java heap and never be GC'ed. When counting number of global reference, it counts all the handles on the chain list, which includes the already deleted ones.
Reviewed-by: zgu, sla, coleenp
Contributed-by: yumin.qi@oracle.com

Summary: Bailout if OSR entry is unreachable.
Reviewed-by: thartmann
Contributed-by: NAndreas Woess <andreas.woess@oracle.com>

Reviewed-by: kvn, dholmes, bobv

Reviewed-by: kvn, dholmes, bobv

Summary: The GetOwnedMonitorInfo() should not return a pending monitor
Reviewed-by: dcubed

Summary: Change TypeF:eq and TypeD:eq to compare NaN values using a bitwise comparison.
Reviewed-by: kvn
Contributed-by: NStefan Anzinger <stefan.anzinger@oracle.com>

Summary: C1 intrinsics for System.nanoTime(), System.currentTimeMillis() and JVM.counterTime() should be pinned.
Reviewed-by: kvn, vlivanov, iveresov

Reviewed-by: acorn, ahgross, rhalade
Contributed-by: harold.seigel@oracle.com

Reviewed-by: acorn, ahgross, rhalade
Contributed-by: harold.seigel@oracle.com

Summary: Adds a missing null check (guarantee) found by Parfait.
Reviewed-by: coleenp, shade

Summary: C1 intrinsics for System.nanoTime(), System.currentTimeMillis() and JVM.counterTime() should be pinned.
Reviewed-by: kvn, vlivanov, iveresov

Summary: Clear the pending OOM exception in SensorInfo::trigger()
Reviewed-by: mchung, dcubed

Reviewed-by: mschoene, coleenp, rhalade, acorn, gtriantafill
Contributed-by: rachel.protacio@oracle.com

Reviewed-by: coleenp, kevinw
Contributed-by: rachel.protacio@oracle.com

Summary: Added required explicit NULL checks
Reviewed-by: thartmann, kvn

Summary: Fixed missing null checks on the result of CodeCache::find_blob() found by Parfait.
Reviewed-by: shade, kvn

Summary: Fixed a missing null check on the return value of AddPNode::Ideal_base_and_offset() found by Parfait.
Reviewed-by: kvn

Summary: Fixed a missing null check on n->in(0) found by Parfait.
Reviewed-by: kvn

Summary: Fixed a missing null check on the return value of MachNodeGenerator() found by Parfait.
Reviewed-by: kvn

Summary: Fixed a missing null check on the return value of InitializeNode::allocation() found by Parfait.
Reviewed-by: zmajo

Summary: We need to check ConstMethod::method() for NULL before dereferencing.
Reviewed-by: kvn, iignatyev

Summary: Make appending found dead BasicHashtableEntrys to the free list atomic.
Reviewed-by: ehelin, shade

Reviewed-by: kbarrett, stefank

Reviewed-by: kbarrett, stefank

Reviewed-by: dholmes, ehelin

Reviewed-by: dholmes, ehelin

8171194: Exception "Duplicate field name&signature in class file" should report the name and signature of the field
Summary: Added code to emit name and signature of duplicate field in java.lang.ClassFormatError exception message
Reviewed-by: dholmes, coleenp

8173373: C1: NPE is thrown instead of LinkageError when accessing inaccessible field on NULL receiver
Summary: Deoptimize if receiver null check of unresolved field access fails to throw NoClassDefFoundError instead of NPE.
Reviewed-by: vlivanov