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Auto merge of #81234 - repnop:fn-alignment, r=lcnr

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Allow specifying alignment for functions

Fixes #75072

This allows the user to specify alignment for functions, which can be useful for low level work where functions need to necessarily be aligned to a specific value.

I believe the error cases not covered in the match are caught earlier based on my testing so I had them just return `None`.
This commit is contained in:
bors 2021-04-06 04:35:26 +00:00
commit a6e7a5aa5d
18 changed files with 137 additions and 83 deletions
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3
compiler/rustc_feature/src/active.rs
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@ -642,6 +642,9 @@ declare_features! (
/// Allows `extern "C-unwind" fn` to enable unwinding across ABI boundaries.
(active, c_unwind, "1.52.0", Some(74990), None),
/// Allows using `#[repr(align(...))]` on function items
(active, fn_align, "1.53.0", Some(82232), None),
// -------------------------------------------------------------------------
// feature-group-end: actual feature gates
// -------------------------------------------------------------------------