hg: jdk/sandbox: 8244504: C2: refactor counted loop code in preparation for long counted loop

[chris.hegarty at oracle.com]

Changeset: 90b266a84c06
Author:    roland
Date:      2020-05-28 14:34 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/90b266a84c06

8244504: C2: refactor counted loop code in preparation for long counted loop
Reviewed-by: jrose, thartmann

! src/hotspot/share/opto/addnode.cpp
! src/hotspot/share/opto/addnode.hpp
! src/hotspot/share/opto/loopPredicate.cpp
! src/hotspot/share/opto/loopnode.cpp
! src/hotspot/share/opto/loopnode.hpp
! src/hotspot/share/opto/loopopts.cpp
! src/hotspot/share/opto/movenode.cpp
! src/hotspot/share/opto/subnode.hpp