hg: jdk/submit: 8238691: C2: turn subtype check into macro node

[rwestrel at redhat.com]

Changeset: 4bcb25effa55
Author:    roland
Date:      2020-02-14 10:31 +0100
URL:       https://hg.openjdk.java.net/jdk/submit/rev/4bcb25effa55

8238691: C2: turn subtype check into macro node
Reviewed-by: vlivanov, thartmann

! src/hotspot/share/opto/c2_globals.hpp
! src/hotspot/share/opto/classes.cpp
! src/hotspot/share/opto/classes.hpp
! src/hotspot/share/opto/compile.cpp
! src/hotspot/share/opto/escape.cpp
! src/hotspot/share/opto/graphKit.cpp
! src/hotspot/share/opto/graphKit.hpp
! src/hotspot/share/opto/library_call.cpp
! src/hotspot/share/opto/loopnode.cpp
! src/hotspot/share/opto/loopopts.cpp
! src/hotspot/share/opto/macro.cpp
! src/hotspot/share/opto/macro.hpp
! src/hotspot/share/opto/macroArrayCopy.cpp
! src/hotspot/share/opto/node.hpp
! src/hotspot/share/opto/phase.hpp
! src/hotspot/share/opto/subnode.cpp
+ src/hotspot/share/opto/subtypenode.cpp
+ src/hotspot/share/opto/subtypenode.hpp