hg: jdk8u/jdk8u/hotspot: 6 new changesets

[sean.coffey at oracle.com]

Changeset: 79351ea143ee
Author:    dbuck
Date:      2016-05-17 02:44 +0000
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/79351ea143ee

8154722: Test gc/ergonomics/TestDynamicNumberOfGCThreads.java fails
Summary: Typo error referring new_acitve_workers is corrected as new_active_workers
Reviewed-by: jmasa, drwhite
Contributed-by: fairoz.matte at oracle.com

! src/share/vm/gc_implementation/shared/adaptiveSizePolicy.cpp

Changeset: 44c8fe602a5e
Author:    stuefe
Date:      2015-04-23 18:00 +0200
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/44c8fe602a5e

8077276: allocating heap with UseLargePages and HugeTLBFS may trash existing memory mappings (linux)
Summary: Remove MAP_FIXED from initial mapping allocation; add tests
Reviewed-by: stefank, coleenp

! src/os/linux/vm/os_linux.cpp

Changeset: 776cb7cbe2e4
Author:    stefank
Date:      2016-04-25 11:36 +0200
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/776cb7cbe2e4

8017629: G1: UseSHM in combination with a G1HeapRegionSize > os::large_page_size() falls back to use small pages
Reviewed-by: pliden, sjohanss, stuefe

! src/os/linux/vm/os_linux.cpp

Changeset: 64bd5b63923c
Author:    vlivanov
Date:      2016-05-24 18:42 +0300
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/64bd5b63923c

8154831: CastII/ConvI2L for a range check is prematurely eliminated
Reviewed-by: kvn, thartmann

! src/share/vm/opto/connode.cpp
! src/share/vm/opto/subnode.cpp

Changeset: 619e7d418a44
Author:    aeriksso
Date:      2016-05-18 11:06 +0200
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/619e7d418a44

8135322: ConstantPool::release_C_heap_structures not run in some circumstances
Reviewed-by: coleenp, sspitsyn

! src/share/vm/classfile/classLoaderData.cpp

Changeset: 5aaa43d91c73
Author:    csahu
Date:      2016-05-24 17:49 +0530
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/rev/5aaa43d91c73

8063086: Math.pow yields different results upon repeated calls
Summary: C2 treats x^2 as a special case and computes x * x while the interpreter and c1 don't have special case code for X^2.
Reviewed-by: kvn

! src/cpu/x86/vm/macroAssembler_x86.cpp
+ test/compiler/floatingpoint/TestPow2.java