git: openjdk/jdk: 8297724: Loop strip mining prevents some empty loops from being eliminated

[Roland Westrelin]

Changeset: 88bfe4d3
Author:    Roland Westrelin <roland at openjdk.org>
Date:      2022-12-21 14:46:57 +0000
URL:       https://git.openjdk.org/jdk/commit/88bfe4d3bff5504bb6061d1484325dd6a55f06a2

8297724: Loop strip mining prevents some empty loops from being eliminated

Reviewed-by: kvn, thartmann

! src/hotspot/share/opto/loopTransform.cpp
! src/hotspot/share/opto/loopnode.hpp
+ test/hotspot/jtreg/compiler/c2/irTests/TestLSMMissedEmptyLoop.java