f4eb5d9f71
Prevent query cycles in the MIR inliner r? `@eddyb` `@wesleywiser` cc `@rust-lang/wg-mir-opt` The general design is that we have a new query that is run on the `validated_mir` instead of on the `optimized_mir`. That query is forced before going into the optimization pipeline, so as to not try to read from a stolen MIR. The query should not be cached cross crate, as you should never call it for items from other crates. By its very design calls into other crates can never cause query cycles. This is a pessimistic approach to inlining, since we strictly have more calls in the `validated_mir` than we have in `optimized_mir`, but that's not a problem imo. |
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