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| author | bors <bors@rust-lang.org> | 2023-10-12 18:45:01 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2023-10-12 18:45:01 +0000 |
| commit | df4379b4eb5357263f0cf75475953f9b5c48c31f (patch) | |
| tree | 5dcabe4de59bc9ca25a492dd04b2d3ae377e61fe /compiler/rustc_driver_impl/src/lib.rs | |
| parent | 672fad9b860c6f2e2b5ca088d7b426099c7198a5 (diff) | |
| parent | f5cdd3e130dce081a72735eeeb0eca283912f48b (diff) | |
| download | rust-df4379b4eb5357263f0cf75475953f9b5c48c31f.tar.gz rust-df4379b4eb5357263f0cf75475953f9b5c48c31f.zip | |
Auto merge of #116510 - scottmcm:no-1-simd-v2, r=compiler-errors
Copy 1-element arrays as scalars, not vectors For `[T; 1]` it's silly to copy as `<1 x T>` when we can just copy as `T`. Inspired by https://github.com/rust-lang/rust/issues/101210#issuecomment-1732470941, which pointed out that `Option<[u8; 1]>` was codegenning worse than `Option<u8>`. (I'm not sure *why* LLVM doesn't optimize out `<1 x u8>`, but might as well just not emit it in the first place in this codepath.) --- I think I bit off too much in #116479; let me try just the scalar case first. r? `@ghost`
Diffstat (limited to 'compiler/rustc_driver_impl/src/lib.rs')
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