Rollup of 6 pull requests #96224
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Rollup of 6 pull requests #96224
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Co-authored-by: Janusz Marcinkiewicz <virrages@gmail.com>
… into_pointer_or_addr
Previously we only exposed a kreg register class which excludes the k0 register since it can't be used in many instructions. However k0 is a valid register and we need to have a way of marking it as clobbered for clobber_abi. Fixes rust-lang#94977
asm: Add a kreg0 register class on x86 which includes k0 Previously we only exposed a kreg register class which excludes the k0 register since it can't be used in many instructions. However k0 is a valid register and we need to have a way of marking it as clobbered for clobber_abi. Fixes rust-lang#94977
…=GuillaumeGomez Remove extra space before a where clause Remove extra space before where clause in the generated documentation. The fix is to move the space before the break-line so that it doesn't appear visually but is still here. Removing it completely would create things like this `impl<D> Delta<D>where D: MyTrait` (missing a space before the where) which I don't think we want. Added two regression test, first one test that the `<br>` is after the space and the second check that the `<br>` is before the spaces. Before:  After:  r? ``@GuillaumeGomez``
…lan-DPC Refactor loop into iterator; simplify negation logic. is_dummy should return when a non-dummy is found, but instead is iterated until completion. With some inspiration from line 323 this was refactored to a single line that returns once a single counterexample is found.
interpret: Fix writing uninit to an allocation When calling `mark_init`, we need to also be mindful of what happens with the relocations! Specifically, when we de-init memory, we need to clear relocations in that range as well or else strange things will happen (and printing will not show the de-init, since relocations take precedence there). Fixes rust-lang/miri#2068. Here's the Miri testcase that this fixes (requires `-Zmiri-disable-validation`): ```rust use std::mem::MaybeUninit; fn main() { unsafe { let mut x = MaybeUninit::<i64>::uninit(); // Put in a ptr. x.as_mut_ptr().cast::<&i32>().write_unaligned(&0); // Overwrite parts of that pointer with 'uninit' through a Scalar. let ptr = x.as_mut_ptr().cast::<i32>(); *ptr = MaybeUninit::uninit().assume_init(); // Reading this back should hence work fine. let _c = *ptr; } } ``` Previously this failed with ``` error: unsupported operation: unable to turn pointer into raw bytes --> ../miri/uninit.rs:11:14 | 11 | let _c = *ptr; | ^^^^ unable to turn pointer into raw bytes | = help: this is likely not a bug in the program; it indicates that the program performed an operation that the interpreter does not support = note: inside `main` at ../miri/uninit.rs:11:14 ```
…=oli-obk Miri provenance cleanup Reviewing rust-lang#95826 by ``@carbotaniuman`` made me realize that we could clean things up a little here. ``@carbotaniuman`` please let me know if you're okay with landing this (it will create a lot of conflicts with your PR), or if you'd prefer incorporating the ideas from this PR into yours. I think we want to end up in a situation where the function you called `ptr_reify_alloc` returns just two things, a concrete tag and an offset. Getting an `AllocId` from a concrete tag should be infallible like now. However a concrete tag and `Tag` don't have to be the same type. r? ``@oli-obk``
…homcc Use futex locks on emscripten. This switches Emscripten to the futex-based lock implementations, away from pthread. Tracking issue: rust-lang#93740
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@bors r+ rollup=never p=5 |
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📌 Commit da1ddf3 has been approved by |
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☀️ Test successful - checks-actions |
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Tested on commit rust-lang/rust@a2df8ba. Direct link to PR: <rust-lang/rust#96224> 💔 miri on windows: test-pass → build-fail (cc @RalfJung @eddyb @oli-obk). 💔 miri on linux: test-pass → build-fail (cc @RalfJung @eddyb @oli-obk).
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Finished benchmarking commit (a2df8ba): comparison url. Summary: This benchmark run did not return any relevant results. If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf. |
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