[8u] request for approval: "8172145: C2: anti dependence missed because store hidden by membar"

[Doerr, Martin]

Hi,



could you please approve the backport of the following C2 fix to jdk8u-dev:



8172145: C2: anti dependence missed because store hidden by membar



This small fix prevents wrong generated code by C2 compiler in rare situations.



Bug: https://bugs.openjdk.java.net/browse/JDK-8172145

Webrev: http://cr.openjdk.java.net/~mdoerr/8172145_C2_antidep/webrev.01/

Review: http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2017-January/025252.html

URL: http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/9102f200c421



The original patch cleanly applies.

Thanks and best regards,
Martin