git: openjdk/jdk17u: master: 8274145: C2: condition incorrectly made redundant with dominating main loop exit condition

[Tobias Hartmann]

Changeset: 1a159cad
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2021-10-12 06:02:57 +0000
URL:       https://git.openjdk.java.net/jdk17u/commit/1a159cade8b01d1b699477c03626157e6f8e9fc2

8274145: C2: condition incorrectly made redundant with dominating main loop exit condition

Backport-of: 2aacd4220a01b467de671212c7a74e6c81a2ad3c

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