docs: Mention rustpkg in release notes #7434
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Added this to #7426 with some other small commits. |
bors
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Jun 5, 2023
MIR episode 6 This PR separates monomorphization from interpreting, and add a monomorphization query to cache the results. Together with making layout queries returning `Arc<Layout>` instead of `Layout` (did you know that `Layout` is a 312 byte struct with a couple of vectors, so it is very costly to clone? I thought it should be very small and cheap) it makes mir interpreting an order of magnitude faster in warmed calls. It still can't evaluate no test in the r-a repo, but all tests that I tried are hitting rust-lang#7434 so I hope after that it will become able to interpret some real world test.
lnicola
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Jun 19, 2023
Lower const params with a bad id cc rust-lang#7434 This PR adds an `InTypeConstId` which is a `DefWithBodyId` and lower const generic parameters into bodies using it, and evaluate them with the mir interpreter. I think this is the last unimplemented const generic feature relative to rustc stable. But there is a problem: The id used in the `InTypeConstId` is the raw `FileAstId`, which changes frequently. So these ids and their bodies will be invalidated very frequently, which is bad for incremental analysis. Due this problem, I disabled lowering for local crates (in library crate the id is stable since files won't be changed). This might be overreacting (const generic expressions are usually small, maybe it would be better enabled with bad performance than disabled) but it makes motivation for doing it in the correct way, and it splits the potential panic and breakages that usually comes with const generic PRs in two steps. Other than the id, I think (at least I hope) other parts are in the right direction.
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