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Add feature gates for f16 and f128

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Includes related tests and documentation pages.

Michael Goulet: Don't issue feature error in resolver for f16/f128
unless finalize

Co-authored-by: Michael Goulet <michael@errs.io>
This commit is contained in:
Trevor Gross 2024-03-02 21:45:23 -05:00
parent dc65095298
commit e782d27ec6
11 changed files with 252 additions and 2 deletions
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4
compiler/rustc_feature/src/unstable.rs
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@ -463,6 +463,10 @@ declare_features! (
(unstable, extended_varargs_abi_support, "1.65.0", Some(100189)),
/// Allows defining `extern type`s.
(unstable, extern_types, "1.23.0", Some(43467)),
/// Allow using 128-bit (quad precision) floating point numbers.
(unstable, f128, "CURRENT_RUSTC_VERSION", Some(116909)),
/// Allow using 16-bit (half precision) floating point numbers.
(unstable, f16, "CURRENT_RUSTC_VERSION", Some(116909)),
/// Allows the use of `#[ffi_const]` on foreign functions.
(unstable, ffi_const, "1.45.0", Some(58328)),
/// Allows the use of `#[ffi_pure]` on foreign functions.