If you are looking for the decompiler itself, visit https://github.com/jindrapetrik/jpexs-decompiler
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List of issues
#1242 Resolve registersAuthor: 
Owyn
OwynDate created:
Type: feature
Visibility: Everybody
Assigned to:
State: new 
Now it only can resolve constants, but why not registers too?
example:
Push "stStrN" register5
but it in decompiled code it knows exactly what register5 is and shows its name, so
resolving it would make work in P-code source tab easier