hg: jdk/sandbox: 8250609: C2 crash in IfNode::fold_compares

[chris.hegarty at oracle.com]

Changeset: c4e1b7680506
Author:    fyang
Date:      2020-07-28 10:38 +0800
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/c4e1b7680506

8250609: C2 crash in IfNode::fold_compares
Reviewed-by: kvn, chagedorn
Contributed-by: wanghuang3 at huawei.com

! src/hotspot/share/opto/ifnode.cpp
+ test/hotspot/jtreg/compiler/c2/TestFoldCompares.java