f86169a58f
Adds `#[rustc_force_inline]` which is similar to always inlining but reports an error if the inlining was not possible, and which always attempts to inline annotated items, regardless of optimisation levels. It can only be applied to free functions to guarantee that the MIR inliner will be able to resolve calls.
122 lines
3.6 KiB
Rust
122 lines
3.6 KiB
Rust
use rustc_abi::Align;
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use rustc_ast as ast;
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use rustc_macros::{Decodable, Encodable, HashStable_Generic};
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use rustc_span::{Span, Symbol};
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use crate::RustcVersion;
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#[derive(Copy, Clone, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)]
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pub enum InlineAttr {
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None,
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Hint,
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Always,
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Never,
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/// `#[rustc_force_inline]` forces inlining to happen in the MIR inliner - it reports an error
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/// if the inlining cannot happen. It is limited to only free functions so that the calls
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/// can always be resolved.
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Force {
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attr_span: Span,
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reason: Option<Symbol>,
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},
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}
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impl InlineAttr {
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pub fn always(&self) -> bool {
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match self {
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InlineAttr::Always | InlineAttr::Force { .. } => true,
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InlineAttr::None | InlineAttr::Hint | InlineAttr::Never => false,
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}
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}
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}
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#[derive(Clone, Encodable, Decodable, Debug, PartialEq, Eq, HashStable_Generic)]
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pub enum InstructionSetAttr {
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ArmA32,
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ArmT32,
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}
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#[derive(Clone, Encodable, Decodable, Debug, HashStable_Generic)]
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pub enum OptimizeAttr {
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None,
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Speed,
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Size,
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}
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#[derive(Clone, Debug, Encodable, Decodable)]
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pub enum DiagnosticAttribute {
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// tidy-alphabetical-start
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DoNotRecommend,
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OnUnimplemented,
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// tidy-alphabetical-end
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}
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#[derive(PartialEq, Debug, Encodable, Decodable, Copy, Clone)]
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pub enum ReprAttr {
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ReprInt(IntType),
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ReprRust,
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ReprC,
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ReprPacked(Align),
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ReprSimd,
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ReprTransparent,
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ReprAlign(Align),
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}
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pub use ReprAttr::*;
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pub enum TransparencyError {
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UnknownTransparency(Symbol, Span),
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MultipleTransparencyAttrs(Span, Span),
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}
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#[derive(Eq, PartialEq, Debug, Copy, Clone)]
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#[derive(Encodable, Decodable)]
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pub enum IntType {
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SignedInt(ast::IntTy),
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UnsignedInt(ast::UintTy),
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}
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#[derive(Copy, Debug, Encodable, Decodable, Clone, HashStable_Generic)]
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pub struct Deprecation {
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pub since: DeprecatedSince,
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/// The note to issue a reason.
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pub note: Option<Symbol>,
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/// A text snippet used to completely replace any use of the deprecated item in an expression.
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///
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/// This is currently unstable.
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pub suggestion: Option<Symbol>,
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}
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/// Release in which an API is deprecated.
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#[derive(Copy, Debug, Encodable, Decodable, Clone, HashStable_Generic)]
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pub enum DeprecatedSince {
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RustcVersion(RustcVersion),
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/// Deprecated in the future ("to be determined").
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Future,
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/// `feature(staged_api)` is off. Deprecation versions outside the standard
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/// library are allowed to be arbitrary strings, for better or worse.
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NonStandard(Symbol),
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/// Deprecation version is unspecified but optional.
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Unspecified,
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/// Failed to parse a deprecation version, or the deprecation version is
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/// unspecified and required. An error has already been emitted.
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Err,
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}
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impl Deprecation {
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/// Whether an item marked with #[deprecated(since = "X")] is currently
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/// deprecated (i.e., whether X is not greater than the current rustc
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/// version).
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pub fn is_in_effect(&self) -> bool {
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match self.since {
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DeprecatedSince::RustcVersion(since) => since <= RustcVersion::CURRENT,
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DeprecatedSince::Future => false,
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// The `since` field doesn't have semantic purpose without `#![staged_api]`.
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DeprecatedSince::NonStandard(_) => true,
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// Assume deprecation is in effect if "since" field is absent or invalid.
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DeprecatedSince::Unspecified | DeprecatedSince::Err => true,
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}
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}
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pub fn is_since_rustc_version(&self) -> bool {
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matches!(self.since, DeprecatedSince::RustcVersion(_))
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}
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}
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