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bors 9136560d32 Auto merge of #115933 - oli-obk:simd_shuffle_const, r=workingjubilee 
Prototype using const generic for simd_shuffle IDX array

cc https://github.com/rust-lang/rust/issues/85229

r? `@workingjubilee` on the design

TLDR: there is now a `fn simd_shuffle_generic<T, U, const IDX: &'static [u32]>(x: T, y: T) -> U;` intrinsic that allows replacing

```rust
simd_shuffle(a, b, const { stuff })
```

with

```rust
simd_shuffle_generic::<_, _, {&stuff}>(a, b)
```

which makes the compiler implementations much simpler, if we manage to at some point eliminate `simd_shuffle`.

There are some issues with this today though (can't do math without bubbling it up in the generic arguments). With this change, we can start porting the simple cases and get better data on the others.
2023-09-30 04:05:26 +00:00
..
src Auto merge of #115933 - oli-obk:simd_shuffle_const, r=workingjubilee 2023-09-30 04:05:26 +00:00
Cargo.toml drop unused deps, gate libc under unix for one crate 2023-04-22 15:22:21 +03:00
messages.ftl Auto merge of #115821 - obeis:hir-analysis-migrate-diagnostics-5, r=compiler-errors 2023-09-29 00:24:57 +00:00
README.md rustc_typeck to rustc_hir_analysis 2022-09-27 10:37:23 +02:00

README.md

For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.