hg: jdk9/hs/hotspot: 2 new changesets

[tobias.hartmann at oracle.com]

Changeset: 366758481af1
Author:    thartmann
Date:      2017-01-25 07:03 +0100
URL:       http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/366758481af1

8173195: [BACKOUT] 8087341: C2 doesn't optimize redundant memory operations with G1
Summary: Backing out 8087341 due to 8172850. Will be re-implemented with 8173196.
Reviewed-by: kvn

! src/cpu/aarch64/vm/aarch64.ad
! src/share/vm/opto/graphKit.cpp
! src/share/vm/opto/graphKit.hpp

Changeset: 6bf44f4e2a1e
Author:    thartmann
Date:      2017-01-25 07:05 +0100
URL:       http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/6bf44f4e2a1e

8172850: Anti-dependency on membar causes crash in register allocator due to invalid instruction scheduling
Summary: Regression test and additional asserts. The problem is fixed by 8087341.
Reviewed-by: kvn

! src/share/vm/opto/cfgnode.cpp
! src/share/vm/opto/coalesce.cpp
! src/share/vm/opto/machnode.cpp
! src/share/vm/opto/matcher.cpp
+ test/compiler/gcbarriers/TestMembarDependencies.java