hg: jdk/hs: 8197563: assert(is_Loop()) crash in PhaseIdealLoop::try_move_store_before_loop()

[tobias.hartmann at oracle.com]

Changeset: 86143b5899dc
Author:    roland
Date:      2018-02-13 16:57 +0100
URL:       http://hg.openjdk.java.net/jdk/hs/rev/86143b5899dc

8197563: assert(is_Loop()) crash in PhaseIdealLoop::try_move_store_before_loop()
Summary: Don't move store out of the loop if head is not a LoopNode.
Reviewed-by: kvn, thartmann

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