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Rollup merge of #117834 - RalfJung:target-feature-stability, r=b-naber
target_feature: make it more clear what that 'Option' means Reading those tables in compiler/rustc_codegen_ssa/src/target_features.rs, it's not immediately clear that `None` means "stable". Let's use an enum with appropriately named variants to make that more obvious.
This commit is contained in:
Matthias Krüger
GitHub
commit
7435887d6c
@ -384,7 +384,7 @@ pub fn target_features(sess: &Session, allow_unstable: bool, target_info: &Locke
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.iter()
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.filter_map(
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|&(feature, gate)| {
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if sess.is_nightly_build() || allow_unstable || gate.is_none() { Some(feature) } else { None }
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if sess.is_nightly_build() || allow_unstable || gate.is_stable() { Some(feature) } else { None }
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},
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)
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.filter(|_feature| {
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@ -293,7 +293,7 @@ pub fn target_features(sess: &Session, allow_unstable: bool) -> Vec<Symbol> {
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supported_target_features(sess)
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.iter()
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.filter_map(|&(feature, gate)| {
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if sess.is_nightly_build() || allow_unstable || gate.is_none() {
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if sess.is_nightly_build() || allow_unstable || gate.is_stable() {
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Some(feature)
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} else {
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None
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@ -554,7 +554,8 @@ pub(crate) fn global_llvm_features(sess: &Session, diagnostics: bool) -> Vec<Str
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UnknownCTargetFeature { feature, rust_feature: PossibleFeature::None }
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};
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sess.emit_warning(unknown_feature);
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} else if feature_state.is_some_and(|(_name, feature_gate)| feature_gate.is_some())
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} else if feature_state
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.is_some_and(|(_name, feature_gate)| !feature_gate.is_stable())
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{
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// An unstable feature. Warn about using it.
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sess.emit_warning(UnstableCTargetFeature { feature });
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@ -19,10 +19,44 @@ use rustc_span::Span;
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/// Features that control behaviour of rustc, rather than the codegen.
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pub const RUSTC_SPECIFIC_FEATURES: &[&str] = &["crt-static"];
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/// Stability information for target features.
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#[derive(Debug, Clone, Copy)]
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pub enum Stability {
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/// This target feature is stable, it can be used in `#[target_feature]` and
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/// `#[cfg(target_feature)]`.
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Stable,
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/// This target feature is unstable; using it in `#[target_feature]` or `#[cfg(target_feature)]`
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/// requires enabling the given nightly feature.
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Unstable(Symbol),
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}
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use Stability::*;
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impl Stability {
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fn as_feature_name(self) -> Option<Symbol> {
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match self {
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Stable => None,
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Unstable(s) => Some(s),
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}
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}
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pub fn is_stable(self) -> bool {
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matches!(self, Stable)
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}
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}
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// Here we list target features that rustc "understands": they can be used in `#[target_feature]`
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// and `#[cfg(target_feature)]`. They also do not trigger any warnings when used with
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// `-Ctarget-feature`.
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//
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// When adding features to the below lists
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// check whether they're named already elsewhere in rust
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// e.g. in stdarch and whether the given name matches LLVM's
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// if it doesn't, to_llvm_feature in llvm_util in rustc_codegen_llvm needs to be adapted
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// if it doesn't, to_llvm_feature in llvm_util in rustc_codegen_llvm needs to be adapted.
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//
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// Also note that all target features listed here must be purely additive: for target_feature 1.1 to
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// be sound, we can never allow features like `+soft-float` (on x86) to be controlled on a
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// per-function level, since we would then allow safe calls from functions with `+soft-float` to
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// functions without that feature!
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//
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// When adding a new feature, be particularly mindful of features that affect function ABIs. Those
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// need to be treated very carefully to avoid introducing unsoundness! This often affects features
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@ -30,139 +64,138 @@ pub const RUSTC_SPECIFIC_FEATURES: &[&str] = &["crt-static"];
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// example of this going wrong), but features enabling new SIMD registers are also a concern (see
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// https://github.com/rust-lang/rust/issues/116558 for an example of this going wrong).
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//
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// Stabilizing a target feature (setting the 2nd component of the pair to `None`) requires t-lang
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// approval.
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// Stabilizing a target feature requires t-lang approval.
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const ARM_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
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const ARM_ALLOWED_FEATURES: &[(&str, Stability)] = &[
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// tidy-alphabetical-start
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("aclass", Some(sym::arm_target_feature)),
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("aes", Some(sym::arm_target_feature)),
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("crc", Some(sym::arm_target_feature)),
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("d32", Some(sym::arm_target_feature)),
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("dotprod", Some(sym::arm_target_feature)),
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("dsp", Some(sym::arm_target_feature)),
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("fp-armv8", Some(sym::arm_target_feature)),
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("i8mm", Some(sym::arm_target_feature)),
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("mclass", Some(sym::arm_target_feature)),
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("neon", Some(sym::arm_target_feature)),
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("rclass", Some(sym::arm_target_feature)),
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("sha2", Some(sym::arm_target_feature)),
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("aclass", Unstable(sym::arm_target_feature)),
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("aes", Unstable(sym::arm_target_feature)),
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("crc", Unstable(sym::arm_target_feature)),
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("d32", Unstable(sym::arm_target_feature)),
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("dotprod", Unstable(sym::arm_target_feature)),
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("dsp", Unstable(sym::arm_target_feature)),
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("fp-armv8", Unstable(sym::arm_target_feature)),
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("i8mm", Unstable(sym::arm_target_feature)),
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("mclass", Unstable(sym::arm_target_feature)),
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("neon", Unstable(sym::arm_target_feature)),
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("rclass", Unstable(sym::arm_target_feature)),
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("sha2", Unstable(sym::arm_target_feature)),
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// This is needed for inline assembly, but shouldn't be stabilized as-is
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// since it should be enabled per-function using #[instruction_set], not
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// #[target_feature].
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("thumb-mode", Some(sym::arm_target_feature)),
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("thumb2", Some(sym::arm_target_feature)),
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("trustzone", Some(sym::arm_target_feature)),
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("v5te", Some(sym::arm_target_feature)),
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("v6", Some(sym::arm_target_feature)),
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("v6k", Some(sym::arm_target_feature)),
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("v6t2", Some(sym::arm_target_feature)),
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("v7", Some(sym::arm_target_feature)),
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("v8", Some(sym::arm_target_feature)),
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("vfp2", Some(sym::arm_target_feature)),
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("vfp3", Some(sym::arm_target_feature)),
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("vfp4", Some(sym::arm_target_feature)),
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("virtualization", Some(sym::arm_target_feature)),
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("thumb-mode", Unstable(sym::arm_target_feature)),
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("thumb2", Unstable(sym::arm_target_feature)),
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("trustzone", Unstable(sym::arm_target_feature)),
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("v5te", Unstable(sym::arm_target_feature)),
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("v6", Unstable(sym::arm_target_feature)),
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("v6k", Unstable(sym::arm_target_feature)),
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("v6t2", Unstable(sym::arm_target_feature)),
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("v7", Unstable(sym::arm_target_feature)),
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("v8", Unstable(sym::arm_target_feature)),
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("vfp2", Unstable(sym::arm_target_feature)),
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("vfp3", Unstable(sym::arm_target_feature)),
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("vfp4", Unstable(sym::arm_target_feature)),
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("virtualization", Unstable(sym::arm_target_feature)),
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// tidy-alphabetical-end
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];
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const AARCH64_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
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const AARCH64_ALLOWED_FEATURES: &[(&str, Stability)] = &[
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// tidy-alphabetical-start
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// FEAT_AES
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("aes", None),
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("aes", Stable),
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// FEAT_BF16
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("bf16", None),
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("bf16", Stable),
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// FEAT_BTI
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("bti", None),
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("bti", Stable),
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// FEAT_CRC
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("crc", None),
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("crc", Stable),
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// FEAT_DIT
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("dit", None),
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("dit", Stable),
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// FEAT_DotProd
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("dotprod", None),
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("dotprod", Stable),
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// FEAT_DPB
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("dpb", None),
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("dpb", Stable),
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// FEAT_DPB2
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("dpb2", None),
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("dpb2", Stable),
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// FEAT_F32MM
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("f32mm", None),
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("f32mm", Stable),
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// FEAT_F64MM
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("f64mm", None),
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("f64mm", Stable),
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// FEAT_FCMA
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("fcma", None),
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("fcma", Stable),
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// FEAT_FHM
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("fhm", None),
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("fhm", Stable),
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// FEAT_FLAGM
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("flagm", None),
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("flagm", Stable),
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// FEAT_FP16
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("fp16", None),
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("fp16", Stable),
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// FEAT_FRINTTS
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("frintts", None),
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("frintts", Stable),
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// FEAT_I8MM
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("i8mm", None),
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("i8mm", Stable),
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// FEAT_JSCVT
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("jsconv", None),
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("jsconv", Stable),
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// FEAT_LOR
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("lor", None),
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("lor", Stable),
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// FEAT_LSE
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("lse", None),
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("lse", Stable),
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// FEAT_MTE
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("mte", None),
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("mte", Stable),
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// FEAT_AdvSimd & FEAT_FP
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("neon", None),
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("neon", Stable),
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// FEAT_PAUTH (address authentication)
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("paca", None),
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("paca", Stable),
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// FEAT_PAUTH (generic authentication)
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("pacg", None),
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("pacg", Stable),
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// FEAT_PAN
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("pan", None),
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("pan", Stable),
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// FEAT_PMUv3
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("pmuv3", None),
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("pmuv3", Stable),
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// FEAT_RAND
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("rand", None),
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("rand", Stable),
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// FEAT_RAS
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("ras", None),
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("ras", Stable),
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// FEAT_RCPC
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("rcpc", None),
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("rcpc", Stable),
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// FEAT_RCPC2
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("rcpc2", None),
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("rcpc2", Stable),
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// FEAT_RDM
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("rdm", None),
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("rdm", Stable),
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// FEAT_SB
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("sb", None),
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("sb", Stable),
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// FEAT_SHA1 & FEAT_SHA256
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("sha2", None),
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("sha2", Stable),
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// FEAT_SHA512 & FEAT_SHA3
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("sha3", None),
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("sha3", Stable),
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// FEAT_SM3 & FEAT_SM4
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("sm4", None),
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("sm4", Stable),
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// FEAT_SPE
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("spe", None),
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("spe", Stable),
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// FEAT_SSBS
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("ssbs", None),
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("ssbs", Stable),
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// FEAT_SVE
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("sve", None),
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("sve", Stable),
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// FEAT_SVE2
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("sve2", None),
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("sve2", Stable),
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// FEAT_SVE2_AES
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("sve2-aes", None),
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("sve2-aes", Stable),
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// FEAT_SVE2_BitPerm
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("sve2-bitperm", None),
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("sve2-bitperm", Stable),
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// FEAT_SVE2_SHA3
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("sve2-sha3", None),
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("sve2-sha3", Stable),
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// FEAT_SVE2_SM4
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("sve2-sm4", None),
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("sve2-sm4", Stable),
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// FEAT_TME
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("tme", None),
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("v8.1a", Some(sym::aarch64_ver_target_feature)),
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("v8.2a", Some(sym::aarch64_ver_target_feature)),
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("v8.3a", Some(sym::aarch64_ver_target_feature)),
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("v8.4a", Some(sym::aarch64_ver_target_feature)),
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("v8.5a", Some(sym::aarch64_ver_target_feature)),
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("v8.6a", Some(sym::aarch64_ver_target_feature)),
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("v8.7a", Some(sym::aarch64_ver_target_feature)),
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("tme", Stable),
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("v8.1a", Unstable(sym::aarch64_ver_target_feature)),
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("v8.2a", Unstable(sym::aarch64_ver_target_feature)),
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("v8.3a", Unstable(sym::aarch64_ver_target_feature)),
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("v8.4a", Unstable(sym::aarch64_ver_target_feature)),
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("v8.5a", Unstable(sym::aarch64_ver_target_feature)),
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("v8.6a", Unstable(sym::aarch64_ver_target_feature)),
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("v8.7a", Unstable(sym::aarch64_ver_target_feature)),
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// FEAT_VHE
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("vh", None),
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("vh", Stable),
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// tidy-alphabetical-end
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];
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@ -170,197 +203,197 @@ const AARCH64_TIED_FEATURES: &[&[&str]] = &[
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&["paca", "pacg"], // Together these represent `pauth` in LLVM
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];
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const X86_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
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const X86_ALLOWED_FEATURES: &[(&str, Stability)] = &[
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// tidy-alphabetical-start
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("adx", None),
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("aes", None),
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("avx", None),
|
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("avx2", None),
|
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("avx512bf16", Some(sym::avx512_target_feature)),
|
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("avx512bitalg", Some(sym::avx512_target_feature)),
|
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("avx512bw", Some(sym::avx512_target_feature)),
|
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("avx512cd", Some(sym::avx512_target_feature)),
|
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("avx512dq", Some(sym::avx512_target_feature)),
|
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("avx512er", Some(sym::avx512_target_feature)),
|
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("avx512f", Some(sym::avx512_target_feature)),
|
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("avx512ifma", Some(sym::avx512_target_feature)),
|
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("avx512pf", Some(sym::avx512_target_feature)),
|
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("avx512vbmi", Some(sym::avx512_target_feature)),
|
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("avx512vbmi2", Some(sym::avx512_target_feature)),
|
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("avx512vl", Some(sym::avx512_target_feature)),
|
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("avx512vnni", Some(sym::avx512_target_feature)),
|
||||
("avx512vp2intersect", Some(sym::avx512_target_feature)),
|
||||
("avx512vpopcntdq", Some(sym::avx512_target_feature)),
|
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("bmi1", None),
|
||||
("bmi2", None),
|
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("cmpxchg16b", None),
|
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("ermsb", Some(sym::ermsb_target_feature)),
|
||||
("f16c", None),
|
||||
("fma", None),
|
||||
("fxsr", None),
|
||||
("gfni", Some(sym::avx512_target_feature)),
|
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("lzcnt", None),
|
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("movbe", None),
|
||||
("pclmulqdq", None),
|
||||
("popcnt", None),
|
||||
("rdrand", None),
|
||||
("rdseed", None),
|
||||
("rtm", Some(sym::rtm_target_feature)),
|
||||
("sha", None),
|
||||
("sse", None),
|
||||
("sse2", None),
|
||||
("sse3", None),
|
||||
("sse4.1", None),
|
||||
("sse4.2", None),
|
||||
("sse4a", Some(sym::sse4a_target_feature)),
|
||||
("ssse3", None),
|
||||
("tbm", Some(sym::tbm_target_feature)),
|
||||
("vaes", Some(sym::avx512_target_feature)),
|
||||
("vpclmulqdq", Some(sym::avx512_target_feature)),
|
||||
("xsave", None),
|
||||
("xsavec", None),
|
||||
("xsaveopt", None),
|
||||
("xsaves", None),
|
||||
("adx", Stable),
|
||||
("aes", Stable),
|
||||
("avx", Stable),
|
||||
("avx2", Stable),
|
||||
("avx512bf16", Unstable(sym::avx512_target_feature)),
|
||||
("avx512bitalg", Unstable(sym::avx512_target_feature)),
|
||||
("avx512bw", Unstable(sym::avx512_target_feature)),
|
||||
("avx512cd", Unstable(sym::avx512_target_feature)),
|
||||
("avx512dq", Unstable(sym::avx512_target_feature)),
|
||||
("avx512er", Unstable(sym::avx512_target_feature)),
|
||||
("avx512f", Unstable(sym::avx512_target_feature)),
|
||||
("avx512ifma", Unstable(sym::avx512_target_feature)),
|
||||
("avx512pf", Unstable(sym::avx512_target_feature)),
|
||||
("avx512vbmi", Unstable(sym::avx512_target_feature)),
|
||||
("avx512vbmi2", Unstable(sym::avx512_target_feature)),
|
||||
("avx512vl", Unstable(sym::avx512_target_feature)),
|
||||
("avx512vnni", Unstable(sym::avx512_target_feature)),
|
||||
("avx512vp2intersect", Unstable(sym::avx512_target_feature)),
|
||||
("avx512vpopcntdq", Unstable(sym::avx512_target_feature)),
|
||||
("bmi1", Stable),
|
||||
("bmi2", Stable),
|
||||
("cmpxchg16b", Stable),
|
||||
("ermsb", Unstable(sym::ermsb_target_feature)),
|
||||
("f16c", Stable),
|
||||
("fma", Stable),
|
||||
("fxsr", Stable),
|
||||
("gfni", Unstable(sym::avx512_target_feature)),
|
||||
("lzcnt", Stable),
|
||||
("movbe", Stable),
|
||||
("pclmulqdq", Stable),
|
||||
("popcnt", Stable),
|
||||
("rdrand", Stable),
|
||||
("rdseed", Stable),
|
||||
("rtm", Unstable(sym::rtm_target_feature)),
|
||||
("sha", Stable),
|
||||
("sse", Stable),
|
||||
("sse2", Stable),
|
||||
("sse3", Stable),
|
||||
("sse4.1", Stable),
|
||||
("sse4.2", Stable),
|
||||
("sse4a", Unstable(sym::sse4a_target_feature)),
|
||||
("ssse3", Stable),
|
||||
("tbm", Unstable(sym::tbm_target_feature)),
|
||||
("vaes", Unstable(sym::avx512_target_feature)),
|
||||
("vpclmulqdq", Unstable(sym::avx512_target_feature)),
|
||||
("xsave", Stable),
|
||||
("xsavec", Stable),
|
||||
("xsaveopt", Stable),
|
||||
("xsaves", Stable),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const HEXAGON_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
|
||||
const HEXAGON_ALLOWED_FEATURES: &[(&str, Stability)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("hvx", Some(sym::hexagon_target_feature)),
|
||||
("hvx-length128b", Some(sym::hexagon_target_feature)),
|
||||
("hvx", Unstable(sym::hexagon_target_feature)),
|
||||
("hvx-length128b", Unstable(sym::hexagon_target_feature)),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const POWERPC_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
|
||||
const POWERPC_ALLOWED_FEATURES: &[(&str, Stability)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("altivec", Some(sym::powerpc_target_feature)),
|
||||
("power10-vector", Some(sym::powerpc_target_feature)),
|
||||
("power8-altivec", Some(sym::powerpc_target_feature)),
|
||||
("power8-vector", Some(sym::powerpc_target_feature)),
|
||||
("power9-altivec", Some(sym::powerpc_target_feature)),
|
||||
("power9-vector", Some(sym::powerpc_target_feature)),
|
||||
("vsx", Some(sym::powerpc_target_feature)),
|
||||
("altivec", Unstable(sym::powerpc_target_feature)),
|
||||
("power10-vector", Unstable(sym::powerpc_target_feature)),
|
||||
("power8-altivec", Unstable(sym::powerpc_target_feature)),
|
||||
("power8-vector", Unstable(sym::powerpc_target_feature)),
|
||||
("power9-altivec", Unstable(sym::powerpc_target_feature)),
|
||||
("power9-vector", Unstable(sym::powerpc_target_feature)),
|
||||
("vsx", Unstable(sym::powerpc_target_feature)),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const MIPS_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
|
||||
const MIPS_ALLOWED_FEATURES: &[(&str, Stability)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("fp64", Some(sym::mips_target_feature)),
|
||||
("msa", Some(sym::mips_target_feature)),
|
||||
("virt", Some(sym::mips_target_feature)),
|
||||
("fp64", Unstable(sym::mips_target_feature)),
|
||||
("msa", Unstable(sym::mips_target_feature)),
|
||||
("virt", Unstable(sym::mips_target_feature)),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const RISCV_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
|
||||
const RISCV_ALLOWED_FEATURES: &[(&str, Stability)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("a", None),
|
||||
("c", None),
|
||||
("d", Some(sym::riscv_target_feature)),
|
||||
("e", Some(sym::riscv_target_feature)),
|
||||
("f", Some(sym::riscv_target_feature)),
|
||||
("m", None),
|
||||
("relax", Some(sym::riscv_target_feature)),
|
||||
("unaligned-scalar-mem", Some(sym::riscv_target_feature)),
|
||||
("v", Some(sym::riscv_target_feature)),
|
||||
("zba", None),
|
||||
("zbb", None),
|
||||
("zbc", None),
|
||||
("zbkb", None),
|
||||
("zbkc", None),
|
||||
("zbkx", None),
|
||||
("zbs", None),
|
||||
("zdinx", Some(sym::riscv_target_feature)),
|
||||
("zfh", Some(sym::riscv_target_feature)),
|
||||
("zfhmin", Some(sym::riscv_target_feature)),
|
||||
("zfinx", Some(sym::riscv_target_feature)),
|
||||
("zhinx", Some(sym::riscv_target_feature)),
|
||||
("zhinxmin", Some(sym::riscv_target_feature)),
|
||||
("zk", None),
|
||||
("zkn", None),
|
||||
("zknd", None),
|
||||
("zkne", None),
|
||||
("zknh", None),
|
||||
("zkr", None),
|
||||
("zks", None),
|
||||
("zksed", None),
|
||||
("zksh", None),
|
||||
("zkt", None),
|
||||
("a", Stable),
|
||||
("c", Stable),
|
||||
("d", Unstable(sym::riscv_target_feature)),
|
||||
("e", Unstable(sym::riscv_target_feature)),
|
||||
("f", Unstable(sym::riscv_target_feature)),
|
||||
("m", Stable),
|
||||
("relax", Unstable(sym::riscv_target_feature)),
|
||||
("unaligned-scalar-mem", Unstable(sym::riscv_target_feature)),
|
||||
("v", Unstable(sym::riscv_target_feature)),
|
||||
("zba", Stable),
|
||||
("zbb", Stable),
|
||||
("zbc", Stable),
|
||||
("zbkb", Stable),
|
||||
("zbkc", Stable),
|
||||
("zbkx", Stable),
|
||||
("zbs", Stable),
|
||||
("zdinx", Unstable(sym::riscv_target_feature)),
|
||||
("zfh", Unstable(sym::riscv_target_feature)),
|
||||
("zfhmin", Unstable(sym::riscv_target_feature)),
|
||||
("zfinx", Unstable(sym::riscv_target_feature)),
|
||||
("zhinx", Unstable(sym::riscv_target_feature)),
|
||||
("zhinxmin", Unstable(sym::riscv_target_feature)),
|
||||
("zk", Stable),
|
||||
("zkn", Stable),
|
||||
("zknd", Stable),
|
||||
("zkne", Stable),
|
||||
("zknh", Stable),
|
||||
("zkr", Stable),
|
||||
("zks", Stable),
|
||||
("zksed", Stable),
|
||||
("zksh", Stable),
|
||||
("zkt", Stable),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const WASM_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
|
||||
const WASM_ALLOWED_FEATURES: &[(&str, Stability)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("atomics", Some(sym::wasm_target_feature)),
|
||||
("bulk-memory", Some(sym::wasm_target_feature)),
|
||||
("exception-handling", Some(sym::wasm_target_feature)),
|
||||
("multivalue", Some(sym::wasm_target_feature)),
|
||||
("mutable-globals", Some(sym::wasm_target_feature)),
|
||||
("nontrapping-fptoint", Some(sym::wasm_target_feature)),
|
||||
("reference-types", Some(sym::wasm_target_feature)),
|
||||
("relaxed-simd", Some(sym::wasm_target_feature)),
|
||||
("sign-ext", Some(sym::wasm_target_feature)),
|
||||
("simd128", None),
|
||||
("atomics", Unstable(sym::wasm_target_feature)),
|
||||
("bulk-memory", Unstable(sym::wasm_target_feature)),
|
||||
("exception-handling", Unstable(sym::wasm_target_feature)),
|
||||
("multivalue", Unstable(sym::wasm_target_feature)),
|
||||
("mutable-globals", Unstable(sym::wasm_target_feature)),
|
||||
("nontrapping-fptoint", Unstable(sym::wasm_target_feature)),
|
||||
("reference-types", Unstable(sym::wasm_target_feature)),
|
||||
("relaxed-simd", Unstable(sym::wasm_target_feature)),
|
||||
("sign-ext", Unstable(sym::wasm_target_feature)),
|
||||
("simd128", Stable),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const BPF_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[("alu32", Some(sym::bpf_target_feature))];
|
||||
const BPF_ALLOWED_FEATURES: &[(&str, Stability)] = &[("alu32", Unstable(sym::bpf_target_feature))];
|
||||
|
||||
const CSKY_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
|
||||
const CSKY_ALLOWED_FEATURES: &[(&str, Stability)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("10e60", Some(sym::csky_target_feature)),
|
||||
("2e3", Some(sym::csky_target_feature)),
|
||||
("3e3r1", Some(sym::csky_target_feature)),
|
||||
("3e3r2", Some(sym::csky_target_feature)),
|
||||
("3e3r3", Some(sym::csky_target_feature)),
|
||||
("3e7", Some(sym::csky_target_feature)),
|
||||
("7e10", Some(sym::csky_target_feature)),
|
||||
("cache", Some(sym::csky_target_feature)),
|
||||
("doloop", Some(sym::csky_target_feature)),
|
||||
("dsp1e2", Some(sym::csky_target_feature)),
|
||||
("dspe60", Some(sym::csky_target_feature)),
|
||||
("e1", Some(sym::csky_target_feature)),
|
||||
("e2", Some(sym::csky_target_feature)),
|
||||
("edsp", Some(sym::csky_target_feature)),
|
||||
("elrw", Some(sym::csky_target_feature)),
|
||||
("float1e2", Some(sym::csky_target_feature)),
|
||||
("float1e3", Some(sym::csky_target_feature)),
|
||||
("float3e4", Some(sym::csky_target_feature)),
|
||||
("float7e60", Some(sym::csky_target_feature)),
|
||||
("floate1", Some(sym::csky_target_feature)),
|
||||
("hard-tp", Some(sym::csky_target_feature)),
|
||||
("high-registers", Some(sym::csky_target_feature)),
|
||||
("hwdiv", Some(sym::csky_target_feature)),
|
||||
("mp", Some(sym::csky_target_feature)),
|
||||
("mp1e2", Some(sym::csky_target_feature)),
|
||||
("nvic", Some(sym::csky_target_feature)),
|
||||
("trust", Some(sym::csky_target_feature)),
|
||||
("vdsp2e60f", Some(sym::csky_target_feature)),
|
||||
("vdspv1", Some(sym::csky_target_feature)),
|
||||
("vdspv2", Some(sym::csky_target_feature)),
|
||||
("10e60", Unstable(sym::csky_target_feature)),
|
||||
("2e3", Unstable(sym::csky_target_feature)),
|
||||
("3e3r1", Unstable(sym::csky_target_feature)),
|
||||
("3e3r2", Unstable(sym::csky_target_feature)),
|
||||
("3e3r3", Unstable(sym::csky_target_feature)),
|
||||
("3e7", Unstable(sym::csky_target_feature)),
|
||||
("7e10", Unstable(sym::csky_target_feature)),
|
||||
("cache", Unstable(sym::csky_target_feature)),
|
||||
("doloop", Unstable(sym::csky_target_feature)),
|
||||
("dsp1e2", Unstable(sym::csky_target_feature)),
|
||||
("dspe60", Unstable(sym::csky_target_feature)),
|
||||
("e1", Unstable(sym::csky_target_feature)),
|
||||
("e2", Unstable(sym::csky_target_feature)),
|
||||
("edsp", Unstable(sym::csky_target_feature)),
|
||||
("elrw", Unstable(sym::csky_target_feature)),
|
||||
("float1e2", Unstable(sym::csky_target_feature)),
|
||||
("float1e3", Unstable(sym::csky_target_feature)),
|
||||
("float3e4", Unstable(sym::csky_target_feature)),
|
||||
("float7e60", Unstable(sym::csky_target_feature)),
|
||||
("floate1", Unstable(sym::csky_target_feature)),
|
||||
("hard-tp", Unstable(sym::csky_target_feature)),
|
||||
("high-registers", Unstable(sym::csky_target_feature)),
|
||||
("hwdiv", Unstable(sym::csky_target_feature)),
|
||||
("mp", Unstable(sym::csky_target_feature)),
|
||||
("mp1e2", Unstable(sym::csky_target_feature)),
|
||||
("nvic", Unstable(sym::csky_target_feature)),
|
||||
("trust", Unstable(sym::csky_target_feature)),
|
||||
("vdsp2e60f", Unstable(sym::csky_target_feature)),
|
||||
("vdspv1", Unstable(sym::csky_target_feature)),
|
||||
("vdspv2", Unstable(sym::csky_target_feature)),
|
||||
// tidy-alphabetical-end
|
||||
//fpu
|
||||
// tidy-alphabetical-start
|
||||
("fdivdu", Some(sym::csky_target_feature)),
|
||||
("fpuv2_df", Some(sym::csky_target_feature)),
|
||||
("fpuv2_sf", Some(sym::csky_target_feature)),
|
||||
("fpuv3_df", Some(sym::csky_target_feature)),
|
||||
("fpuv3_hf", Some(sym::csky_target_feature)),
|
||||
("fpuv3_hi", Some(sym::csky_target_feature)),
|
||||
("fpuv3_sf", Some(sym::csky_target_feature)),
|
||||
("hard-float", Some(sym::csky_target_feature)),
|
||||
("hard-float-abi", Some(sym::csky_target_feature)),
|
||||
("fdivdu", Unstable(sym::csky_target_feature)),
|
||||
("fpuv2_df", Unstable(sym::csky_target_feature)),
|
||||
("fpuv2_sf", Unstable(sym::csky_target_feature)),
|
||||
("fpuv3_df", Unstable(sym::csky_target_feature)),
|
||||
("fpuv3_hf", Unstable(sym::csky_target_feature)),
|
||||
("fpuv3_hi", Unstable(sym::csky_target_feature)),
|
||||
("fpuv3_sf", Unstable(sym::csky_target_feature)),
|
||||
("hard-float", Unstable(sym::csky_target_feature)),
|
||||
("hard-float-abi", Unstable(sym::csky_target_feature)),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const LOONGARCH_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
|
||||
const LOONGARCH_ALLOWED_FEATURES: &[(&str, Stability)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("d", Some(sym::loongarch_target_feature)),
|
||||
("f", Some(sym::loongarch_target_feature)),
|
||||
("lasx", Some(sym::loongarch_target_feature)),
|
||||
("lbt", Some(sym::loongarch_target_feature)),
|
||||
("lsx", Some(sym::loongarch_target_feature)),
|
||||
("lvz", Some(sym::loongarch_target_feature)),
|
||||
("ual", Some(sym::loongarch_target_feature)),
|
||||
("d", Unstable(sym::loongarch_target_feature)),
|
||||
("f", Unstable(sym::loongarch_target_feature)),
|
||||
("lasx", Unstable(sym::loongarch_target_feature)),
|
||||
("lbt", Unstable(sym::loongarch_target_feature)),
|
||||
("lsx", Unstable(sym::loongarch_target_feature)),
|
||||
("lvz", Unstable(sym::loongarch_target_feature)),
|
||||
("ual", Unstable(sym::loongarch_target_feature)),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
@ -368,7 +401,7 @@ const LOONGARCH_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
|
||||
/// primitives may be documented.
|
||||
///
|
||||
/// IMPORTANT: If you're adding another feature list above, make sure to add it to this iterator!
|
||||
pub fn all_known_features() -> impl Iterator<Item = (&'static str, Option<Symbol>)> {
|
||||
pub fn all_known_features() -> impl Iterator<Item = (&'static str, Stability)> {
|
||||
std::iter::empty()
|
||||
.chain(ARM_ALLOWED_FEATURES.iter())
|
||||
.chain(AARCH64_ALLOWED_FEATURES.iter())
|
||||
@ -384,7 +417,7 @@ pub fn all_known_features() -> impl Iterator<Item = (&'static str, Option<Symbol
|
||||
.cloned()
|
||||
}
|
||||
|
||||
pub fn supported_target_features(sess: &Session) -> &'static [(&'static str, Option<Symbol>)] {
|
||||
pub fn supported_target_features(sess: &Session) -> &'static [(&'static str, Stability)] {
|
||||
match &*sess.target.arch {
|
||||
"arm" => ARM_ALLOWED_FEATURES,
|
||||
"aarch64" => AARCH64_ALLOWED_FEATURES,
|
||||
@ -529,11 +562,11 @@ pub(crate) fn provide(providers: &mut Providers) {
|
||||
if tcx.sess.opts.actually_rustdoc {
|
||||
// rustdoc needs to be able to document functions that use all the features, so
|
||||
// whitelist them all
|
||||
all_known_features().map(|(a, b)| (a.to_string(), b)).collect()
|
||||
all_known_features().map(|(a, b)| (a.to_string(), b.as_feature_name())).collect()
|
||||
} else {
|
||||
supported_target_features(tcx.sess)
|
||||
.iter()
|
||||
.map(|&(a, b)| (a.to_string(), b))
|
||||
.map(|&(a, b)| (a.to_string(), b.as_feature_name()))
|
||||
.collect()
|
||||
}
|
||||
},
|
||||
|
||||
Loading…
Reference in New Issue
Block a user