Rollup of 4 pull requests - #156285
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…r=lcnr Skipping borrowck because of trivial const r? @saethlin the [assertion](https://github.com/chenyukang/rust/blob/31c38576a4cf1a0864af536f62d11f829db1c7c8/compiler/rustc_mir_transform/src/lib.rs#L424) is added in PR: rust-lang#148040 I think we also need to skip trvial const in `mir_borrowck`.
core: drop unmapped ZSTs in array `map` Fixes rust-lang#152211. Alternative to rust-lang#152220 and rust-lang#152248. This makes the `Drain` type use the same ZST-handling strategy as `slice::IterMut`, which stores the remaining length instead of a one-past-the-end pointer when the type is a ZST. I've also removed the const-generic `N` parameter from `Drain` to avoid unnecessary monomorphizations.
Add a suite of ChunkedBitSet union/subtract/intersect test scenarios While working on rust-lang#153754, I found that these code paths are under-tested.
Add `sync` option to `-Z threads` to force synchronization on one thread This adds a `sync` option to `-Z threads` to force synchronization while still using one thread. This is useful to measure overhead of synchronization without the noise of additional threads.
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@bors r+ rollup=never p=5 |
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…uwer Rollup of 4 pull requests Successful merges: - #149468 (Skipping borrowck because of trivial const) - #152487 (core: drop unmapped ZSTs in array `map`) - #153759 (Add a suite of ChunkedBitSet union/subtract/intersect test scenarios) - #156198 (Add `sync` option to `-Z threads` to force synchronization on one thread)
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💔 Test for 87e5848 failed: CI. Failed job:
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Successful merges:
map#152487 (core: drop unmapped ZSTs in arraymap)syncoption to-Z threadsto force synchronization on one thread #156198 (Addsyncoption to-Z threadsto force synchronization on one thread)r? @ghost
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