hg: jdk/jdk: 8228772: C2 compilation fails due to unschedulable graph if DominatorSearchLimit is reached

[tobias.hartmann at oracle.com]

Changeset: 4fbcbd248c52
Author:    thartmann
Date:      2019-08-13 09:54 +0200
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/4fbcbd248c52

8228772: C2 compilation fails due to unschedulable graph if DominatorSearchLimit is reached
Summary: Ignore membar if the load is already control dependent on it.
Reviewed-by: neliasso, kvn

! src/hotspot/share/opto/gcm.cpp
+ test/hotspot/jtreg/compiler/controldependency/TestAntiDependentMembar.java