Comment by sestep
9 hours ago
Yeah it took a bit to decide which abstraction level to target but I ended up choosing LLVM IR (planning to try PTX soon). It's been pretty successful so far for SIMD stuff, although proving theorems about concurrent programs seems a lot slower so far.
Does this require having a Rocq semantics of LLVM IR? Which one do you use?
No existing semantics are enough for my goals, so I'm building my own based on Vellvm, and proving "equivalence" theorems to it and other related work that specify what quirks/discrepancies/idiosyncrasies they have with respect to each other.
Ah, interesting. I went with Ghidra p-code which seems ok but what I didn't really appreciate going in was how much of the platform API surface you have to describe before you can prove pretty much anything at all.