Reviewed-by: kvn, coleenp

Summary: Insert null check for one warning; other warning handled in parfait config
Reviewed-by: kvn

8025644: java/util/stream/test/org/openjdk/tests/java/util/stream/ToArrayOpTest.java fails with TestData$OfRef): failure java.lang.AssertionError: expected [true] but found [false]
Summary: In GraphKit::gen_checkcast() provide only exact superklass to GraphKit::maybe_cast_profiled_receiver()
Reviewed-by: kvn, roland

Summary: Double CodeCacheSegmentSize from 64 byte to 128 bytes if tiered compilation is enabled
Reviewed-by: kvn, twisti

Summary: ELFv2 ABI used by the little endian PowerPC64 on Linux.
Reviewed-by: kvn
Contributed-by: asmundak@google.com

8036667: "assert(adr->is_AddP() && adr->in(AddPNode::Offset)->is_Con()) failed: offset is a constant" with FoldStableValues on
Reviewed-by: kvn

Summary: enable type speculation
Reviewed-by: kvn

Summary: check fr.sender_sp() in java thread instead of os::is_first_C_frame(&fr).
Reviewed-by: twisti, coleenp

Summary: fix build of CPP interpreter on x86 and sparc
Reviewed-by: kvn

Summary: Start test with -XX:-TieredCompilation so that one compiler thread works
Reviewed-by: kvn, twisti

8035841: assert(dp_src->tag() == dp_dst->tag()) failed: should be same tags 1 != 0 at ciMethodData.cpp:90
Summary: concurrent update of traps with construction of ciMethodData
Reviewed-by: kvn, twisti

Reviewed-by: twisti

Reviewed-by: kvn, jrose

Reviewed-by: iveresov, roland, coleenp

Reviewed-by: jrose, twisti

Reviewed-by: kvn, twisti

Summary: Call is_metadata instead which does less work for the call in debugInfo.hpp which is called for all compiled code stack frames.
Reviewed-by: jmasa, dcubed

Summary: -XX:+AlwaysSafeConstructors to unconditionally emit the trailing constructor barrier.
Reviewed-by: kvn, roland

Summary: -XX:+AlwaysAtomicAccesses to unconditionally enforce the access atomicity.
Reviewed-by: roland, kvn, iveresov

Summary: Restore code lost in mis-merge
Reviewed-by: dcubed

Summary: It is more safe to get/update data for suspended threads at a safepoint
Reviewed-by: dcubed, twisti, dholmes
Contributed-by: serguei.spitsyn@oracle.com

Summary: favor profile data coming from outer most method
Reviewed-by: kvn, twisti

Reviewed-by: sla, zgu

Reviewed-by: mgerdin, coleenp

Reviewed-by: coleenp, pliden

Summary: biased locking's revoke_bias locks monitor in compiled frame with eliminated lock
Reviewed-by: kvn, iveresov

Summary: added missing check for loop padding case.
Reviewed-by: kvn, jrose

Summary: There is race condition between os::interrupt and os::is_interrupted on Windows. In JVM_Sleep(Thread.sleep), check if thread gets interrupted, it may see interrupted but not really interrupted so cause spurious waking up (early return from sleep). Fix by checking if interrupt event really gets set thus prevent false return. For intrinsic of _isInterrupted, on Windows, go fastpath only on bit not set.
Reviewed-by: acorn, kvn
Contributed-by: david.holmes@oracle.com, yumin.qi@oracle.com

Summary: Avoid #ifs by introducing the accessor function interpreter_frame_temp_oop_addr().
Reviewed-by: kvn, twisti

Reviewed-by: dcubed, mgronlun

Summary: Moved the test code inside INCLUDE_ALL_GCS
Reviewed-by: dholmes, stefank

Summary: Provide fast lookup of checked dependencies via hashmap
Reviewed-by: kvn, roland

Summary: Added NULL check for loopnode() in get_pre_loop_end()
Reviewed-by: kvn, roland

8031752: Failed speculative optimizations should be reattempted when root of compilation is different
Summary: support for speculative traps that keep track of the root of the compilation in which a trap occurs.
Reviewed-by: kvn, twisti

Summary: Change type from float to double on block frequency, and add check for +Inf - +Inf operation
Reviewed-by: kvn, roland

Summary: Subclassed the MachSpillCopyNode with different subnodes for different spill purposes to enhance debugging / visualization
Reviewed-by: kvn, roland

Summary: Ensure appropriate min. number of compiler threads (1 for non-tiered, and 2 for tiered)
Reviewed-by: kvn

Summary: Remove dead code in Pressure::lower
Reviewed-by: kvn, roland

Summary: Revert JDK-6976350 because it does not improve PLAB fragmentation. To the contrary, it tends to increase the amount of wasted space with many threads.
Reviewed-by: brutisso

4505697: nsk/jdi/ExceptionEvent/_itself_/exevent006 and exevent008 tests fail with InvocationTargetException
Reviewed-by: dcubed, dholmes, sspitsyn