JDK-8367785 added a barrier to the beginning of java.lang.Object::<init> for strict fields. Now if the field is strict and *final*, we will also add barriers to the end of the constructors:
https://github.com/openjdk/valhalla/blob/274d56076260a490ed52df29373216617ddf73ef/src/hotspot/share/c1/c1_GraphBuilder.cpp#L1645-L1652

https://github.com/openjdk/valhalla/blob/274d56076260a490ed52df29373216617ddf73ef/src/hotspot/share/opto/parse1.cpp#L1092-L1099

I think those barriers can be omitted because the object can only escape after j.l.Object::<init> for strict fields.