this might have some limited uses, but you'd need to know how it was optimised, and also perhaps build the build engine for the same target and then decompile it to see what it looks like after that kind of treatment.?
perhaps with a bit of luck you'd get some useful markers / functions mapped tho, its not unheard of.
problem in my mind (didnt test it ofc) would be that the decompiled version is decompiled from a different ISA that build usually compiles to, so the decompiled version in my mind would look totally different. (you dont have the ported sources i suppose, only the originals).
perhaps with a bit of luck you'd get some useful markers / functions mapped tho, its not unheard of.
problem in my mind (didnt test it ofc) would be that the decompiled version is decompiled from a different ISA that build usually compiles to, so the decompiled version in my mind would look totally different. (you dont have the ported sources i suppose, only the originals).