git: openjdk/jdk: master: 8350756: C2 SuperWord Multiversioning: remove useless slow loop when the fast loop disappears

[Emanuel Peter]

Changeset: e82031ec
Branch: master
Author:    Emanuel Peter <epeter at openjdk.org>
Date:      2025-03-06 06:48:42 +0000
URL:       https://git.openjdk.org/jdk/commit/e82031ec1a8ae2478f83d009594d512a13fdb77e

8350756: C2 SuperWord Multiversioning: remove useless slow loop when the fast loop disappears

Reviewed-by: kvn, chagedorn

! src/hotspot/share/opto/loopnode.cpp
! src/hotspot/share/opto/loopnode.hpp
! src/hotspot/share/opto/loopopts.cpp
! src/hotspot/share/opto/opaquenode.cpp
! src/hotspot/share/opto/opaquenode.hpp
! test/hotspot/jtreg/compiler/lib/ir_framework/IRNode.java
+ test/hotspot/jtreg/compiler/loopopts/superword/TestMultiversionRemoveUselessSlowLoop.java