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Implement the instruction_set attribute

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This commit is contained in:
xd009642 2020-10-08 23:23:27 +01:00
parent 4437b4b150
commit a6e2b636e6
22 changed files with 247 additions and 4 deletions
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3
compiler/rustc_feature/src/active.rs
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@ -599,6 +599,9 @@ declare_features! (
/// Allows argument and return position `impl Trait` in a `const fn`.
(active, const_impl_trait, "1.48.0", Some(77463), None),
/// Allows `#[instruction_set(_)]` attribute
(active, isa_attribute, "1.48.0", Some(74727), None),
// -------------------------------------------------------------------------
// feature-group-end: actual feature gates
// -------------------------------------------------------------------------

2
compiler/rustc_feature/src/builtin_attrs.rs
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@ -336,6 +336,8 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
optimize, AssumedUsed, template!(List: "size|speed"), optimize_attribute,
experimental!(optimize),
),
// RFC 2867
gated!(instruction_set, AssumedUsed, template!(List: "set"), isa_attribute, experimental!(instruction_set)),
gated!(ffi_returns_twice, AssumedUsed, template!(Word), experimental!(ffi_returns_twice)),
gated!(ffi_pure, AssumedUsed, template!(Word), experimental!(ffi_pure)),