rustc_const_eval: Expose APIs for signalling foreign accesses to memory #141391
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This PR will allow Miri to internally update its state based on information about foreign accesses performed on its memory during FFI. Necessary as part of rust-lang/miri#4326 to make use of the extra information we gain; currently pending review of the design (see design document in the linked PR), so marked as draft for now.
r? @RalfJung