interpret, miri: uniform treatments of intrinsics/functions with and without return block #124715
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…without return block
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The Miri subtree was changed cc @rust-lang/miri Some changes occurred to the CTFE / Miri engine cc @rust-lang/miri |
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…iaskrgr Rollup of 4 pull requests Successful merges: - rust-lang#122441 (Improve several `Read` implementations) - rust-lang#124584 (Various improvements to entrypoint code) - rust-lang#124699 (Use `unchecked_sub` in `split_at`) - rust-lang#124715 (interpret, miri: uniform treatments of intrinsics/functions with and without return block) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#124715 - RalfJung:interpret-noreturn, r=compiler-errors interpret, miri: uniform treatments of intrinsics/functions with and without return block A long time ago we didn't have a `dest: &MPlaceTy<'tcx, Self::Provenance>` for diverging functions, and since `dest` is used so often we special-cased these non-returning intrinsics and functions so that we'd have `dest` available everywhere else. But this has changed a while ago, now only the return block `ret` is optional, and there's a convenient `return_to_block` function for dealing with the `None` case. So there no longer is any reason to treat diverging intrinsics/functions any different from those that do return.
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A long time ago we didn't have a
dest: &MPlaceTy<'tcx, Self::Provenance>for diverging functions, and sincedestis used so often we special-cased these non-returning intrinsics and functions so that we'd havedestavailable everywhere else. But this has changed a while ago, now only the return blockretis optional, and there's a convenientreturn_to_blockfunction for dealing with theNonecase.So there no longer is any reason to treat diverging intrinsics/functions any different from those that do return.