hg: valhalla/valhalla: 8195001: [MVT] Avoid allocations of default value types

[tobias.hartmann at oracle.com]

Changeset: 1dabe69eb829
Author:    thartmann
Date:      2018-01-15 08:56 +0100
URL:       http://hg.openjdk.java.net/valhalla/valhalla/rev/1dabe69eb829

8195001: [MVT] Avoid allocations of default value types
Reviewed-by: roland

! src/hotspot/share/opto/valuetypenode.cpp
! src/hotspot/share/opto/valuetypenode.hpp
! test/hotspot/jtreg/compiler/valhalla/valuetypes/TestBasicFunctionality.java