Summary: As part of 6944166 we disabled the concept of abandoned pauses (i.e., if the collection set is empty, we would still try to do a pause even if it is to update the RSets and scan the roots). This changeset removes the code and structures associated with abandoned pauses.
Reviewed-by: iveresov, johnc

Summary: Remove the breadth-first copying order from ParallelScavenge and use depth-first by default.
Reviewed-by: jcoomes, ysr, johnc

Summary: The per-worker _new_refs array is used to hold references that point into the collection set. It is populated during RSet updating and subsequently processed. In the event of an evacuation failure it processed again to recreate the RSets of regions in the collection set. Remove the per-worker _new_refs array by processing the references directly. Use a DirtyCardQueue to hold the cards containing the references so that the RSets of regions in the collection set can be recreated when handling an evacuation failure.
Reviewed-by: iveresov, jmasa, tonyp

Summary: Management code enabled for use by a concurrent collector.
Reviewed-by: mchung, ysr

Reviewed-by: kvn

Summary: During concurrent refinment, filter cards in young regions after it has been determined that the region has been allocated from and the young type of the region has been set.
Reviewed-by: iveresov, tonyp, jcoomes

Reviewed-by: tonyp, ysr

Reviewed-by: kvn

Summary: Add JVM_CONSTANT_InvokeDynamic records to constant pool to determine per-instruction BSMs.
Reviewed-by: twisti

Reviewed-by: twisti

Summary: Use GrowableArray and VectorSet allocated in ciEnv arena.
Reviewed-by: never, twisti

Reviewed-by: kvn

Reviewed-by: kvn, jrose

Reviewed-by: kvn

Summary: Add hotspot support for modules image
Reviewed-by: acorn

Summary: Execute IGVN optimization before and after Escape Analysis
Reviewed-by: never

6965671: fatal error: acquiring lock JNIGlobalHandle_lock/16 out of order with lock CodeCache_lock/1
Reviewed-by: kvn, dcubed

Summary: fix MonitorInUseLists memory leak and MonitorBound now works
Reviewed-by: chrisphi, dice

Reviewed-by: ysr, jmasa

Summary: Adjust performance flags settings.
Reviewed-by: never, phh

Summary: Use replace_node() method instead of subsume_node().
Reviewed-by: jrose, never

Summary: G1 was not handling explicit GCs correctly in many ways. It does now. See the CR for the list of improvements contained in this changeset.
Reviewed-by: iveresov, ysr, johnc

Summary: normalize widen value in xmeet() and xdual() methods for types Int and Long so the type meet will be symmetric.
Reviewed-by: jrose

Reviewed-by: phh

Summary: Missing protected page below heap with compressed oops on Linux with large pages use.
Reviewed-by: never, phh, jcoomes

Summary: Shrinking of a generation and the corresponding card table was causing part of the card table to be uncommitted.
Reviewed-by: jcoomes

Reviewed-by: twisti, never

Reviewed-by: dcubed, kvn, twisti

6956958: assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted() || is_optimized() || is_megam
Reviewed-by: kvn

Summary: check that raw loads have control edge
Reviewed-by: never, twisti

Summary: Support java_mirror for unloaded klasses, arrays as well as instances.  Simplify ciTypeFlow by removing unused path.
Reviewed-by: kvn

Summary: Modify assembler code to check for 0 count for all copy routines.
Reviewed-by: never, ysr, jcoomes

Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode.
Reviewed-by: twisti, never

Summary: In C2's G1 post write barrier, the loads of the buffer and index fields from the DirtyCardQueue structure may be moved across a safepoint. Use the current value of "control" in the C2 IR to limit how far these loads can move.
Reviewed-by: never, iveresov, kvn

Reviewed-by: kvn

Summary: Enable parallel compilation in C1
Reviewed-by: never, kvn

Summary: New optional flags to reduce inflated monitor cleanup times
Reviewed-by: chrisphi, dice

Reviewed-by: kvn, twisti, ysr

Reviewed-by: kvn, dcubed

Summary: Hoist DecodeN instruction above null check
Reviewed-by: never, twisti