hg: valhalla/valhalla: allow substituability test when EnableValhalla is false

[rwestrel at redhat.com]

Changeset: 1049b319f14c
Author:    roland
Date:      2019-01-28 15:15 +0100
URL:       http://hg.openjdk.java.net/valhalla/valhalla/rev/1049b319f14c

allow substituability test when EnableValhalla is false

! src/hotspot/share/opto/mulnode.cpp
! src/hotspot/share/opto/parse2.cpp
! src/hotspot/share/opto/type.hpp
! src/hotspot/share/runtime/arguments.cpp