git: openjdk/jdk: 8299179: ArrayFill with store on backedge needs to reduce length by 1

[Emanuel Peter]

Changeset: d716ec5d
Author:    Emanuel Peter <epeter at openjdk.org>
Date:      2023-01-12 07:23:19 +0000
URL:       https://git.openjdk.org/jdk/commit/d716ec5d3034240b7dd0aed86d9bb371bc3e5f5a

8299179: ArrayFill with store on backedge needs to reduce length by 1

Reviewed-by: thartmann, kvn

! src/hotspot/share/opto/loopTransform.cpp
+ test/hotspot/jtreg/compiler/loopopts/TestBackedgeLoadArrayFill.jasm
+ test/hotspot/jtreg/compiler/loopopts/TestBackedgeLoadArrayFillMain.java