add the const_evaluatable_checked feature
#76559
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Rollup of 11 pull requests Successful merges: - rust-lang#75857 (Syntactically permit unsafety on mods) - rust-lang#76289 (Add docs about crate level documentation support) - rust-lang#76514 (Add revisions to const generic issue UI tests.) - rust-lang#76524 (typeck: don't suggest inaccessible private fields) - rust-lang#76548 (Validate removal of AscribeUserType, FakeRead, and Shallow borrow) - rust-lang#76555 (Reword `trivial_casts` lint in rustc book to better explain what it does.) - rust-lang#76559 (add the `const_evaluatable_checked` feature) - rust-lang#76563 (small typo fix in rustc_parse docs) - rust-lang#76565 (take reference to Place directly instead of taking reference to Box<Place>) - rust-lang#76567 (use push(char) to add chars (single-char &strs) to strings instead of push_str(&str)) - rust-lang#76568 (Add missing examples on core traits' method) Failed merges: r? `@ghost`
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compare generic constants using `AbstractConst`s This is a MVP of rust-lang/compiler-team#340. The changes in this PR should only be relevant if `feature(const_evaluatable_checked)` is enabled. ~~currently based on top of rust-lang#76559, so blocked on that.~~ r? `@oli-obk` cc `@varkor` `@eddyb`
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Implements a rather small subset of rust-lang/compiler-team#340
Unlike the MCP, this does not try to compare different constant, but instead only adds the constants found in where clauses
to the predicates of a function. This PR adds the feature gate
const_evaluatable_checked, without which nothing should change.r? @oli-obk @eddyb