Reviewed-by: hseigel, ccheung

Summary: code in PhaseIterGVN::add_users_to_worklist() from 8054478 makes incorrect assumption about graph shape
Reviewed-by: iveresov

Summary: dead backbranch in main loop results in erroneous array access
Reviewed-by: kvn, iveresov

Reviewed-by: jcoomes

Summary: Open compilation log files in write-mode and close before deletion attempt.
Reviewed-by: vlivanov

Reviewed-by: kvn, roland

Summary: Moved allocation context update from remark to the cleanup phase.
Reviewed-by: mgerdin, jmasa

Summary: Added a G1CollectorPolicyExt where it is possible to extend the class.
Reviewed-by: sjohanss, tschatzl

Reviewed-by: coleenp, ccheung

Summary: note all MemberNames created on internal list for adjusting method entries.
Reviewed-by: sspitsyn, dcubed, lfoltan

Summary: Ignore non-instance Klasses in the subclass hierarchy.
Reviewed-by: kvn, iignatyev, jrose

Reviewed-by: jcoomes

Reviewed-by: sla, stefank

8062957: Heap is not shrunk when deallocating under memory pressure
Summary: Added explicit -XX:-ExplicitGCInvokesConcurrent to invocations
Reviewed-by: brutisso, tschatzl

Summary: Read _top before _gc_time_stamp in saved_mark_word() with LoadLoad order to ensure we get a consistent view
Reviewed-by: brutisso, dcubed, dholmes, stefank

Reviewed-by: kvn, roland, coleenp, mgerdin

8056071: compiler/whitebox/IsMethodCompilableTest.java fails with 'method() is not compilable after 3 iterations'
Summary: Always use MDO if valid and always compile trivial methods with C1 if available.
Reviewed-by: kvn, iveresov

Summary: Make variable SAFESEH_FLAG replaced with /SAFESEH link option.
Reviewed-by: mgronlun, sla

8034005: cannot debug in synchronizer.o or objectMonitor.o on Solaris X86
Summary: Solaris needs objcopy version of 2.21.1 or newer is needed to create valid .debuginfo files.
Reviewed-by: dsamersoff, sspitsyn, dholmes, ihse

Summary: Signed bitfield size y can only have (1 << y)-1 values.
Reviewed-by: shade, dholmes, jrose, ctornqvi, gtriantafill

Reviewed-by: jcoomes

8062036: ConcurrentMarkThread::slt may be invoked before ConcurrentMarkThread::makeSurrogateLockerThread causing intermittent crashes
Summary: Suppress gc_alot during VM init, improve error for SLT uninitialized.
Reviewed-by: jmasa, brutisso, tschatzl

Summary: Change CDS non-fatal preloading errors to warnings.
Reviewed-by: minqi, mseledtsov, coleenp