8223689: Add JFR Thread Sampling Support
8223690: Add JFR BiasedLock Event Support
8223691: Add JFR G1 Region Type Change Event Support
8223692: Add JFR G1 Heap Summary Event Support
Summary: Backport JFR from JDK11, additional fixes
Reviewed-by: neugens, apetushkov
Contributed-by: denghui.ddh@alibaba-inc.com

Reviewed-by: shade, mdoerr

Summary: added back code accidentally removed during push of JDK-8223147
Reviewed-by: neugens

8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

Reviewed-by: neliasso, rkennke, dlong

Summary: Added C2 matching rules to remove unnecessary sign extension for byte array access.
Reviewed-by: roland, kvn, aph, adinn

Reviewed-by: andrew, phh

Summary: Cast to void* within DTRACE_CLASS* macros.
Reviewed-by: coleenp, shade

Summary: Implement _lh_array_tag_type_value as const, not enum.
Reviewed-by: vlivanov, minqi

Reviewed-by: phh, mbalao, bae

Reviewed-by: kbarrett, tschatzl

Reviewed-by: goetz, mdoerr
Contributed-by: NKazunori Ogata <ogatak@jp.ibm.com>

Summary: Change copyright date from 2017 to 2018.
Reviewed-by: andrew

Reviewed-by: sla, kbarrett, gziemski

Reviewed-by: thartmann, kvn

Summary: Prevent downgraded compilation tasks from recompiling.
Reviewed-by: sgehwolf, thartmann, andrew

Summary: Includes compile_id addition from JDK-8054492
Reviewed-by: andrew

Reviewed-by: mdoerr, goetz
Contributed-by: NGustavo Serra Scalet &lt;gustavo.scalet@eldorado.org.br&gt;, Kazunori Ogata <ogatak@jp.ibm.com>

Summary: Avoided collecting unaligned stores in Initialize node by making can_capture_store return false for same
Reviewed-by: dlong, kvn, vlivanov

Reviewed-by: simonis, mdoerr
Contributed-by: NMichihiro Horie <horie@jp.ibm.com>

Summary: Bail out of CEE if one of the gotos is a safepoint but the if is not.
Reviewed-by: vlivanov, mdoerr

Reviewed-by: mdoerr, goetz
Contributed-by: NBruno Rosa &lt;bruno.rosa@eldorado.org.br&gt;, Gustavo Serra Scalet &lt;gustavo.scalet@eldorado.org.br&gt;, Igor Nunes &lt;igor.nunes@eldorado.org.br&gt;, Martin Doerr <martin.doerr@sap.com>

Summary: Summary: os::readdir uses POSIX readdir, drop buffer arg, fix JFR uses.
Reviewed-by: coleenp, tschatzl, bsrbnd, shade, phh

Summary: Guard against regions degraded to copies.
Reviewed-by: kvn

Summary: implement os::set_native_thread_name() on windows, linux
Reviewed-by: sla, ctornqvi, simonis
Contributed-by: thomas.stuefe@sap.com

Summary: Add tag bit to all JNI weak handles
Reviewed-by: kbarrett, coleenp, tschatzl

Reviewed-by: dholmes

Reviewed-by: stuefe, tschatzl

Reviewed-by: goetz, mdoerr
Contributed-by: NKazunori Ogata <ogatak@jp.ibm.com>

Summary: Speed up ParNew collections by pruning the list of scavengable nmethods.
Reviewed-by: jmasa, tonyp, twisti

Reviewed-by: shade, roland

Reviewed-by: tbell, asaha

Reviewed-by: erikj, dholmes

Reviewed-by: aph, mdoerr

Summary: Introduce alignment-safe Copy::conjoint_swap and JVM_CopySwapMemory
Reviewed-by: mikael, dholmes

Summary: Correction of failed backport of JDK-8211394 via JDK-8212696.
Reviewed-by: dholmes, coffeys

Reviewed-by: neliasso, kvn

Reviewed-by: kvn

Reviewed-by: dholmes, jcbeyler

Reviewed-by: dbuck