hg: jdk/jdk10: 8196296: Lucene test crashes C2 compilation

[tobias.hartmann at oracle.com]

Changeset: efa7f1a283e4
Author:    roland
Date:      2018-01-30 09:08 +0100
URL:       http://hg.openjdk.java.net/jdk/jdk10/rev/efa7f1a283e4

8196296: Lucene test crashes C2 compilation
Summary: Prevent merging of back to back ifs if one is a counted loop end.
Reviewed-by: kvn, thartmann

! src/hotspot/share/opto/loopnode.cpp
! src/hotspot/share/opto/loopopts.cpp
+ test/hotspot/jtreg/compiler/loopopts/TestStripMinedBackToBackIfs.java