git: openjdk/jdk16u: 8261912: Code IfNode::fold_compares_helper more defensively

[Aleksey Shipilev]

Changeset: 6be71baf
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2021-03-03 17:22:15 +0000
URL:       https://git.openjdk.java.net/jdk16u/commit/6be71baf

8261912: Code IfNode::fold_compares_helper more defensively

Backport-of: e9f3aab7f483818944faf8638f421c6960fafbd2

! src/hotspot/share/opto/ifnode.cpp