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Turns out if you generate blocks with 100s of millions of ops in MLIR you have a bad time https://discourse.llvm.org/t/rfc-operations-orderindex-overflow-and-mitigations/85541 I always enjoy reading these scalability reports to learn about the horrible things people to do their compiler
LLVM Discussion Forums · [RFC] Operation's orderIndex overflow and mitigationsThis isn’t exactly an RFC, but I genuinely do want to request comments about this situation. In CIRCT, we have managed to generate some really large blocks, to the point that we observed dominance checks failing when we really thought they shouldn’t. After running with -fsanitize=integer, we confirmed that our IR had overflowed orderIndex in Operation’s updateOrderIfNecessary and Block’s recomputeOpOrder. orderIndex is currently an unsigned. I’m trying to get some exact numbers, but it’s takin...