b5f9053423
trans::type_of now has a constraint saying that its type argument is statically sized. This eliminates the "impossible happened" case in type_of. Yay! I note that this change decreased translation time for stage2/rustc from 16.1 s to 14.0 s. I also think many of the remaining checks could be eliminated with some mildly clever use of constrained types and further preconditions. Future work!
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