8156028: G1YoungGenSizer _adaptive_size not correct when setting NewSize and MaxNewSize to the same value
Reviewed-by: jmasa, sangheki, drwhite, phh
Contributed-by: maoliang.ml@alibaba-inc.com

Reviewed-by: mdoerr, kbarrett, tschatzl

Reviewed-by: tschatzl, kbarrett

Summary: Weakened too strong assert.
Reviewed-by: kvn, roland

--HG--
extra : rebase_source : ad2511a886c7c243487bcb8c02289900400e2b93

Reviewed-by: thartmann, mdoerr

--HG--
extra : rebase_source : 506ba6f67cb248fb78906f8e66a5679f1b69e571

Reviewed-by: stuefe, zgu

Summary: Bail out of superword optimization if loop was removed (i.e., if zero-trip Opaque1Node was removed).
Reviewed-by: kvn, roland

--HG--
extra : rebase_source : c0aaf50465968cd558ac8f12e9f4577cbc2774c2

Reviewed-by: shade, stuefe, coleenp

Reviewed-by: kvn, mcberg
Contributed-by: ygaevsky@azul.com

Reviewed-by: kvn, jrose, phh

Summary: Fixed recognition of unnecessary GCLocker collections.
Reviewed-by: pliden, tschatzl
Contributed-by: johnc@azul.com

Reviewed-by: iveresov

Summary: Allow zero sized code buffer when checking if there's enough remaining size
Reviewed-by: kvn

Reviewed-by: phh, andrew

Summary: Duplicate cmp node in empty loop if it has other users
Reviewed-by: neliasso, thartmann
Contributed-by: wanghuang3@huawei.com, xietuo@huawei.com

Summary: Don't double-free cached class bytes on redefinition loading failure.
Reviewed-by: sspitsyn, jiangli

Reviewed-by: mgerdin, tschatzl

8155951: VM crash in nsk/jvmti/RedefineClasses/StressRedefine: assert failed: Corrupted constant pool
8151066: assert(0 <= i && i < length()) failed: index out of bounds
Summary: lock classes for redefinition because constant pool merging isn't thread safe, use method constant pool because constant pool merging doesn't make equivalent cpCaches because of invokedynamic
Reviewed-by: shade, andrew

Summary: Prepare Zero build for backport of JDK-8062808.
Reviewed-by: sgehwolf

8226798: JVM crash in klassItable::initialize_itable_for_interface(int, InstanceKlass*, bool, Thread*)
Summary: When calculating vtable size at class load time, do not look for miranda method if matching package private method is found in a super class.
Reviewed-by: acorn, lfoltan

Summary: increase code_size2 for stubs
Reviewed-by: iveresov

Reviewed-by: kvn

Summary: convert the assert into compilation check which will skip superword optimization
Reviewed-by: roland, thartmann

Reviewed-by: thartmann, kvn

Reviewed-by: kvn

--HG--
extra : rebase_source : 51bb75f94058cf96cda1ea902645358e4c3a41fe

Reviewed-by: thartmann
Contributed-by: jitao8@huawei.com

Summary: Fix BCEscapeAnalyzer to correctly handle _getClass intrinsic.
Reviewed-by: kvn, dlong, redestad, neliasso

Reviewed-by: kvn, thartmann

--HG--
extra : rebase_source : e1af5b86db38ac1b7ed27b4f39be267bb8b27d0e

Reviewed-by: dholmes, jcbeyler

Summary: Add memory fences on accesses to JvmtiEnvBase::_tag_map
Reviewed-by: dholmes, jcbeyler, sspitsyn

Reviewed-by: goetz

Reviewed-by: shade, tschatzl

Reviewed-by: neliasso, rkennke, dlong

Summary: Added C2 matching rules to remove unnecessary sign extension for byte array access.
Reviewed-by: roland, kvn, aph, adinn

Reviewed-by: andrew, phh

Summary: Cast to void* within DTRACE_CLASS* macros.
Reviewed-by: coleenp, shade

Summary: Implement _lh_array_tag_type_value as const, not enum.
Reviewed-by: vlivanov, minqi

Reviewed-by: phh, mbalao, bae

Reviewed-by: kbarrett, tschatzl

Reviewed-by: goetz, mdoerr
Contributed-by: NKazunori Ogata <ogatak@jp.ibm.com>