7005241: C1: SEGV in java.util.concurrent.LinkedTransferQueue.xfer() with compressed oops Summary: Implementation of the CAS primitive for x64 compressed oops was incorrect. It kills rscratch2 register (r11), which is allocatable in C1. Also, we don't need to restore cmpval as it's never used after that, so we need only one temporary register, which can be scratch1. Reviewed-by: kvn, never

7004925: CTW: assert(nbits == 32 || -(1 << nbits-1) <= x && x < ( 1 << nbits-1)) failed: value out of range Summary: Set offset in register if it does not fit 13 bits. Reviewed-by: iveresov

7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute Reviewed-by: twisti

7004530: casx used for 32 bit cas after 7003554 Reviewed-by: kvn, iveresov

7003798: test/compiler/6991596 fails with true != false Summary: The test of 6991596 fails on SPARCV9. Reviewed-by: kvn, never, jrose

6961690: load oops from constant table on SPARC Summary: oops should be loaded from the constant table of an nmethod instead of materializing them with a long code sequence. Reviewed-by: never, kvn

7003554: (tiered) assert(is_null_object() || handle() != NULL) failed: cannot embed null pointer Summary: C1 with profiling doesn't check whether the MDO has been really allocated, which can silently fail if the perm gen is full. The solution is to check if the allocation failed and bailout out of inlining or compilation. Reviewed-by: kvn, never

6998985: faulty generic arraycopy on windows x86_64: 4th arg overwritten with oop Reviewed-by: kvn, never

6875026: CTW failure jdk6_18/hotspot/src/share/vm/c1/c1_LinearScan.cpp:5486 Reviewed-by: kvn, iveresov

7002666: eclipse CDT projects crash with compressed oops Reviewed-by: kvn, twisti

Merge

6985015: C1 needs to support compressed oops Summary: This change implements compressed oops for C1 for x64 and sparc. The changes are mostly on the codegen level, with a few exceptions when we do access things outside of the heap that are uncompressed from the IR. Compressed oops are now also enabled with tiered. Reviewed-by: twisti, kvn, never, phh

7001363: java/dyn/InvokeDynamic should not be a well-known class in the JVM Summary: Because of the removal of language support, the JDK 7 API for JSR 292 no longer includes a public class named java/dyn/InvokeDynamic. Reviewed-by: jrose, kvn

7007229: Fix warnings with VS2010 in compressedStream.cpp Summary: An interference between a fix for 6993125 and disabled optimization in compressedStream.cpp produces a warning with VS2010. Disable the warning for the code fragment for which the optimizations are disabled. Reviewed-by: kvn

Merge

7006221: Bump the HS20 build number to 04 Summary: Update the HS20 build number to 04 Reviewed-by: jcoomes

Merge

Merge

7005259: CMS: BubbleUpRef asserts referent(obj)->is_oop() failed: Enqueued a bad referent Summary: Relaxed the assert by allowing NULL referents when discovery may be concurrent. Reviewed-by: johnc, jcoomes

7001033: assert(gch->gc_cause() == GCCause::_scavenge_alot || !gch->incremental_collection_failed()) 7002546: regression on SpecJbb2005 on 7b118 comparing to 7b117 on small heaps Summary: Relaxed assertion checking related to incremental_collection_failed flag to allow for ExplicitGCInvokesConcurrent behaviour where we do not want a failing scavenge to bail to a stop-world collection. Parameterized incremental_collection_will_fail() so we can selectively use, or not use, as appropriate, the statistical prediction at specific use sites. This essentially reverts the scavenge bail-out logic to what it was prior to some recent changes that had inadvertently started using the statistical prediction which can be noisy in the presence of bursty loads. Added some associated verbose non-product debugging messages. Reviewed-by: johnc, tonyp

Merge

6994628: G1: Test gc/gctests/FinalizeTest05 fails (one live object is finalized) Summary: The Solaris Studio 12 update 1 C++ compiler was incorrectly re-ordering the reads of an object's mark word in oopDesc::forward_to_atomic(). This opened a small window where one thread could execute the successful CAS path even though another thread had already successfully forwarded the object. This could result in an object being copied twice. The code in oopDesc::forward_to_atomic() was changed to read the mark word once. Reviewed-by: ysr, tonyp

6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen Summary: Allow the eden to the expanded up to a point when the GC locker is active. Reviewed-by: jwilhelm, johnc, ysr, jcoomes

7003789: PTRACE_GETREGS problems with SA on Linux. Summary: ifdef definitions for PTRACE_GETREGS_REQ clarified Reviewed-by: dholmes

6539281: -Xcheck:jni should validate char* argument to ReleaseStringUTFChars Summary: Tag allocated memory with a magic value and verify when releasing. Reviewed-by: phh, stefank

7003782: Update JVMTI version to 1.2 for jdk7 Summary: Update minor version to 1.2 for jdk7 Reviewed-by: phh, dcubed

Merge

6704010: Internal Error (src/share/vm/interpreter/interpreterRuntime.cpp:1106) Summary: Fixed a race condition in the assertion caused by an unguarded, concurrent access to a GrowableArray object. Reviewed-by: coleenp, dholmes, dsamersoff Contributed-by: volker.simonis@gmail.com