6684579: SoftReference processing can be made more efficient Summary: For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not. Reviewed-by: jmasa

os_family = solaris

arch = x86

arch_model = x86_64

os_arch = solaris_x86

os_arch_model = solaris_x86_64

lib_arch = amd64

compiler = gcc

sysdefs = -DSOLARIS -D_GNU_SOURCE  -DAMD64