VM_Version::platform_features() in vm_version_solaris_sparc.cpp uses sysinfo(SI_ISALIST, ...) to determine hardware features. Unfortunately it not possible to find out all instruction set extensions like popc, which is required for 6378821.
JDK-2180551Use auxv to determine SPARC hardware features on Solaris
JDK-2175227Use auxv to determine SPARC hardware features on Solaris
JDK-8043913remove legacy code in SPARC's VM_Version::platform_features