git: openjdk/jdk17: 8261147: C2: Node is wrongly marked as reduction resulting in a wrong execution due to wrong vector instructions

Fri Jul 9 11:55:02 UTC 2021

Changeset: f791fdf2
Author:    Christian Hagedorn <chagedorn at openjdk.org>
Date:      2021-07-09 11:53:45 +0000
URL:       https://git.openjdk.java.net/jdk17/commit/f791fdf23ef6e49e7e1ca68e33a16f6686e0bfa1

8261147: C2: Node is wrongly marked as reduction resulting in a wrong execution due to wrong vector instructions

Reviewed-by: thartmann, kvn

! src/hotspot/share/opto/loopopts.cpp
! src/hotspot/share/opto/node.cpp
+ test/hotspot/jtreg/compiler/loopopts/superword/TestWronglyMarkedReduction.java