git: openjdk/jdk20: 8298176: remove OpaqueZeroTripGuardPostLoop once main-loop disappears

[Roland Westrelin]

Changeset: a0a09d56
Author:    Roland Westrelin <roland at openjdk.org>
Date:      2022-12-22 08:56:00 +0000
URL:       https://git.openjdk.org/jdk20/commit/a0a09d56ba4fc6133b423ad29d86fc99dd6dc19b

8298176: remove OpaqueZeroTripGuardPostLoop once main-loop disappears

Reviewed-by: thartmann, chagedorn, kvn

! src/hotspot/share/opto/loopTransform.cpp
! src/hotspot/share/opto/opaquenode.hpp
! src/hotspot/share/opto/phaseX.cpp
! src/hotspot/share/opto/phaseX.hpp
! src/hotspot/share/opto/subnode.cpp
! src/hotspot/share/opto/subnode.hpp
+ test/hotspot/jtreg/compiler/loopopts/TestOpaqueZeroTripGuardPostLoopRemoval.java