rust/compiler/rustc_trait_selection/src/traits/engine.rs, branch 1.84.1

Fix transmute goal

2024-10-19T18:07:35+00:00

Auto merge of #131422 - GnomedDev:smallvec-predicate-obligations, r=compiler-errors

2024-10-16T04:06:14+00:00

Use `ThinVec` for PredicateObligation storage ~~I noticed while profiling clippy on a project that a large amount of time is being spent allocating `Vec`s for `PredicateObligation`, and the `Vec`s are often quite small. This is an attempt to optimise this by using SmallVec to avoid heap allocations for these common small Vecs.~~ This PR turns all the `Vec` into a single type alias while avoiding referring to `Vec` around it, then swaps the type over to `ThinVec` and fixes the fallout. This also contains an implementation of `ThinVec::extract_if`, copied from `Vec::extract_if` and currently being upstreamed to https://github.com/Gankra/thin-vec/pull/66. This leads to a small (0.2-0.7%) performance gain in the latest perf run.

stabilize `-Znext-solver=coherence`

2024-10-15T11:11:00+00:00

Swap Vec to type alias

2024-10-12T14:17:08+00:00

Extract trait_refs_are_compatible, make it instantiate binders

2024-09-30T17:17:33+00:00

Revert 'Stabilize -Znext-solver=coherence'

2024-09-11T21:57:04+00:00

stabilize `-Znext-solver=coherence`

2024-09-05T07:57:16+00:00

Reformat `use` declarations.

2024-07-28T22:26:52+00:00

The previous commit updated `rustfmt.toml` appropriately. This commit is the outcome of running `x fmt --all` with the new formatting options.

Move all error reporting into rustc_trait_selection

2024-07-22T02:34:35+00:00

Move trait selection error reporting to its own top-level module

2024-07-08T20:04:47+00:00