Merge

8170655: [posix] Fix minimum stack size computations
Reviewed-by: dcubed, coleenp

8170991: PPC64: Bad code for initialization of short arrays
Summary: Implement special ClearArray nodes to improve initialization.
Reviewed-by: goetz

8166560: [s390] Basic enablement of s390 port.
Summary: Also fix problem with ARM Elf configuration.
Reviewed-by: dholmes, coleenp

8159335: Fix problems with stack overflow handling.
Reviewed-by: dlong, coleenp, mdoerr

8156923: [ppc] Implement "JEP 270: Reserved Stack Areas for Critical Sections".
Reviewed-by: simonis, dholmes

8073500: Prevent certain commercial flags from being changed at runtime
Summary: Implement new writeable mechanism for flag control
Reviewed-by: coleenp, iklam

8146801: Allocating short arrays of non-constant size is slow
Reviewed-by: kvn, twisti, vlivanov

Merge

8149655: PPC64: Implement CompactString intrinsics
Reviewed-by: goetz, kvn

8147379: Investigate if ConvertSleepToYield still should be false by default on Sparc
Reviewed-by: dcubed, sjohanss

8147937: Adapt SAP copyrights to new company name.
Reviewed-by: simonis, stuefe

8139864: Improve handling of stack protection zones.
Reviewed-by: stuefe, coleenp, fparain

8145292: PPC64: fix build after "8046936: JEP 270: Reserved Stack Areas for Critical Sections"
Reviewed-by: simonis

8141132: JEP 254: Compact Strings
Summary: Adopt a more space-efficient internal representation for strings.
Reviewed-by: alanb, bdelsart, coleenp, iklam, jiangli, jrose, kevinw, naoto, pliden, roland, smarks, twisti
Contributed-by: Brent Christian <brent.christian@oracle.com>, Vivek Deshpande <vivek.r.deshpande@intel.com>, Tobias Hartmann <tobias.hartmann@oracle.com>, Charlie Hunt <charlie.hunt@oracle.com>, Vladimir Kozlov <vladimir.kozlov@oracle.com>, Roger Riggs <roger.riggs@oracle.com>, Xueming Shen <xueming.shen@oracle.com>, Aleksey Shipilev <aleksey.shipilev@oracle.com>, Sandhya Viswanathan <sandhya.viswanathan@intel.com>

8078556: Runtime: implement ranges (optionally constraints) for those flags that have them missing.
Summary: JEP 245: implement ranges and constraints for runtime flags.
Reviewed-by: coleenp, ddmitriev, jiangli, goetz
Contributed-by: goetz.lindenmaier@sap.com, gerard.ziemski@oracle.com

8130332: StarvationMonitorInterval, PreInflateSpin, VerifyGenericSignatures and CountInterpCalls VM Options can be deprecated or removed in JDK 9
Summary: Deprecate StarvationMonitorInterval and PreInflateSpin, remove VerifyGenericSignatures and CountInterpCalls
Reviewed-by: coleenp, gziemski

8122937: [JEP 245] Validate JVM Command-Line Flag Arguments.
Summary: Validate the arguments to all JVM command-line flags so as to avoid crashes, and ensure that appropriate error messages are displayed when they are invalid.
Reviewed-by: ddmitriev, dholmes, kbarrett, drwhite, brutisso, coleenp

Merge

8068945: Use RBP register as proper frame pointer in JIT compiled code on x86
Summary: Introduce the PreserveFramePointer flag to control if RBP is used as the frame pointer or as a general purpose register.
Reviewed-by: kvn, roland, dlong, enevill, shade

8077838: Recent developments for ppc.
Summary: Power 8 recognition and instructions, math.*Exact intrinsics and rtm, C2 optimizations
Reviewed-by: kvn, simonis

8074459: Flags handling memory sizes should be of type size_t
Summary: Changed the type to size_t for flags that handles memory sizes
Reviewed-by: kbarrett, tschatzl

8029940: PPC64 (part 122): C2 compiler port
Reviewed-by: kvn

8029015: PPC64 (part 216): opto: trap based null and range checks
Summary: On PPC64 use tdi instruction that does a compare and raises SIGTRAP for NULL and range checks.
Reviewed-by: kvn

8028471: PPC64 (part 215): opto: Extend ImplicitNullCheck optimization.
Summary: Fixed Implicit NULL check optimization for AIX, where the page at address '0' is only write-protected.
Reviewed-by: kvn

8027966: Adapt PPC to 8023657: New type profiling points: arguments to call
Reviewed-by: dholmes

8027964: Adapt PPC to 6843347: Boundary values in some public GC options cause crashes
Reviewed-by: dholmes

8019972: PPC64 (part 9): platform files for interpreter only VM.
Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs.
Reviewed-by: kvn