git: openjdk/jdk11u-dev: 8261147: C2: Node is wrongly marked as reduction resulting in a wrong execution due to wrong vector instructions

[Martin Doerr]

Changeset: 69341be4
Author:    Martin Doerr <mdoerr at openjdk.org>
Date:      2021-07-28 08:32:24 +0000
URL:       https://git.openjdk.java.net/jdk11u-dev/commit/69341be492f640c81fe210f0d1c1dec4162761f0

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

Reviewed-by: roland
Backport-of: f791fdf23ef6e49e7e1ca68e33a16f6686e0bfa1

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