hg: jdk/sandbox: 8217368: AArch64: C2 recursive stack locking optimisation not triggered

[chris.hegarty at oracle.com]

Changeset: cb43e14dc68b
Author:    ngasson
Date:      2019-01-22 15:33 +0800
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/cb43e14dc68b

8217368: AArch64: C2 recursive stack locking optimisation not triggered
Reviewed-by: aph, drwhite

! src/hotspot/cpu/aarch64/aarch64.ad
! test/micro/org/openjdk/bench/vm/lang/LockUnlock.java