Auto merge of #133099 - RalfJung:forbidden-hardfloat-features, r=workingjubilee
forbid toggling x87 and fpregs on hard-float targets Part of https://github.com/rust-lang/rust/issues/116344, follow-up to https://github.com/rust-lang/rust/pull/129884: The `x87` target feature on x86 and the `fpregs` target feature on ARM must not be disabled on a hardfloat target, as that would change the float ABI. However, *enabling* `fpregs` on ARM is [explicitly requested](https://github.com/rust-lang/rust/issues/130988) as it seems to be useful. Therefore, we need to refine the distinction of "forbidden" target features and "allowed" target features: all (un)stable target features can determine on a per-target basis whether they should be allowed to be toggled or not. `fpregs` then checks whether the current target has the `soft-float` feature, and if yes, `fpregs` is permitted -- otherwise, it is not. (Same for `x87` on x86). Also fixes https://github.com/rust-lang/rust/issues/132351. Since `fpregs` and `x87` can be enabled on some builds and disabled on others, it would make sense that one can query it via `cfg`. Therefore, I made them behave in `cfg` like any other unstable target feature. The first commit prepares the infrastructure, but does not change behavior. The second commit then wires up `fpregs` and `x87` with that new infrastructure. r? `@workingjubilee`
This commit is contained in:
bors
commit
327c7ee436
32 changed files with 616 additions and 414 deletions
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@ -2603,6 +2603,18 @@ impl TargetOptions {
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.collect();
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}
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}
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pub(crate) fn has_feature(&self, search_feature: &str) -> bool {
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self.features.split(',').any(|f| {
|
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if let Some(f) = f.strip_prefix('+')
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&& f == search_feature
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{
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true
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} else {
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false
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}
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})
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}
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}
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impl Default for TargetOptions {
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|
|
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@ -5,6 +5,8 @@ use rustc_data_structures::fx::{FxHashMap, FxHashSet};
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use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
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use rustc_span::symbol::{Symbol, sym};
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use crate::spec::Target;
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/// Features that control behaviour of rustc, rather than the codegen.
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/// These exist globally and are not in the target-specific lists below.
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pub const RUSTC_SPECIFIC_FEATURES: &[&str] = &["crt-static"];
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@ -15,45 +17,115 @@ pub const RUSTC_SPECIFIC_FEATURES: &[&str] = &["crt-static"];
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pub const RUSTC_SPECIAL_FEATURES: &[&str] = &["backchain"];
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/// Stability information for target features.
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/// `Toggleability` is the type storing whether (un)stable features can be toggled:
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/// this is initially a function since it can depend on `Target`, but for stable hashing
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/// it needs to be something hashable to we have to make the type generic.
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#[derive(Debug, Clone, Copy)]
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pub enum Stability {
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pub enum Stability<Toggleability> {
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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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/// This feature can not be set via `-Ctarget-feature` or `#[target_feature]`, it can only be set in the basic
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/// target definition. Used in particular for features that change the floating-point ABI.
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Stable {
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/// When enabling/disabling the feature via `-Ctarget-feature` or `#[target_feature]`,
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/// determine if that is allowed.
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allow_toggle: Toggleability,
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},
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/// This target feature is unstable. It is only present in `#[cfg(target_feature)]` on
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/// nightly and using it in `#[target_feature]` requires enabling the given nightly feature.
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Unstable {
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/// This must be a *language* feature, or else rustc will ICE when reporting a missing
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/// feature gate!
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nightly_feature: Symbol,
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/// See `Stable::allow_toggle` comment above.
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allow_toggle: Toggleability,
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},
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/// This feature can not be set via `-Ctarget-feature` or `#[target_feature]`, it can only be
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/// set in the basic target definition. It is never set in `cfg(target_feature)`. Used in
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/// particular for features that change the floating-point ABI.
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Forbidden { reason: &'static str },
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}
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use Stability::*;
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impl<CTX> HashStable<CTX> for Stability {
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/// `Stability` where `allow_toggle` has not been computed yet.
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/// Returns `Ok` if the toggle is allowed, `Err` with an explanation of not.
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pub type StabilityUncomputed = Stability<fn(&Target) -> Result<(), &'static str>>;
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/// `Stability` where `allow_toggle` has already been computed.
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pub type StabilityComputed = Stability<Result<(), &'static str>>;
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impl<CTX, Toggleability: HashStable<CTX>> HashStable<CTX> for Stability<Toggleability> {
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#[inline]
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fn hash_stable(&self, hcx: &mut CTX, hasher: &mut StableHasher) {
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std::mem::discriminant(self).hash_stable(hcx, hasher);
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match self {
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Stable => {}
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Unstable(sym) => {
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sym.hash_stable(hcx, hasher);
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Stability::Stable { allow_toggle } => {
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allow_toggle.hash_stable(hcx, hasher);
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}
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Stability::Unstable { nightly_feature, allow_toggle } => {
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nightly_feature.hash_stable(hcx, hasher);
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allow_toggle.hash_stable(hcx, hasher);
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}
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Stability::Forbidden { reason } => {
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reason.hash_stable(hcx, hasher);
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}
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Forbidden { .. } => {}
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}
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}
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}
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impl Stability {
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pub fn is_stable(self) -> bool {
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matches!(self, Stable)
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impl<Toggleability> Stability<Toggleability> {
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/// Returns whether the feature can be used in `cfg(target_feature)` ever.
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/// (It might still be nightly-only even if this returns `true`, so make sure to also check
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/// `requires_nightly`.)
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pub fn in_cfg(self) -> bool {
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!matches!(self, Stability::Forbidden { .. })
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}
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/// Forbidden features are not supported.
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pub fn is_supported(self) -> bool {
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!matches!(self, Forbidden { .. })
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/// Returns the nightly feature that is required to toggle this target feature via
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/// `#[target_feature]`/`-Ctarget-feature` or to test it via `cfg(target_feature)`.
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/// (For `cfg` we only care whether the feature is nightly or not, we don't require
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/// the feature gate to actually be enabled when using a nightly compiler.)
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///
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/// Before calling this, ensure the feature is even permitted for this use:
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/// - for `#[target_feature]`/`-Ctarget-feature`, check `allow_toggle()`
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/// - for `cfg(target_feature)`, check `in_cfg`
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pub fn requires_nightly(self) -> Option<Symbol> {
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match self {
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Stability::Unstable { nightly_feature, .. } => Some(nightly_feature),
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Stability::Stable { .. } => None,
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Stability::Forbidden { .. } => panic!("forbidden features should not reach this far"),
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}
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}
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}
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impl StabilityUncomputed {
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pub fn compute_toggleability(self, target: &Target) -> StabilityComputed {
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use Stability::*;
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match self {
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Stable { allow_toggle } => Stable { allow_toggle: allow_toggle(target) },
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Unstable { nightly_feature, allow_toggle } => {
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Unstable { nightly_feature, allow_toggle: allow_toggle(target) }
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}
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Forbidden { reason } => Forbidden { reason },
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}
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}
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}
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impl StabilityComputed {
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/// Returns whether the feature may be toggled via `#[target_feature]` or `-Ctarget-feature`.
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/// (It might still be nightly-only even if this returns `true`, so make sure to also check
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/// `requires_nightly`.)
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pub fn allow_toggle(self) -> Result<(), &'static str> {
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match self {
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Stability::Stable { allow_toggle } => allow_toggle,
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Stability::Unstable { allow_toggle, .. } => allow_toggle,
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Stability::Forbidden { reason } => Err(reason),
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}
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}
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}
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// Constructors for the list below, defaulting to "always allow toggle".
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const STABLE: StabilityUncomputed = Stability::Stable { allow_toggle: |_target| Ok(()) };
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const fn unstable(nightly_feature: Symbol) -> StabilityUncomputed {
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Stability::Unstable { nightly_feature, allow_toggle: |_target| Ok(()) }
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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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@ -99,181 +171,196 @@ impl Stability {
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// Both of these are also applied transitively.
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type ImpliedFeatures = &'static [&'static str];
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const ARM_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
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const ARM_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
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// tidy-alphabetical-start
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("aclass", Unstable(sym::arm_target_feature), &[]),
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("aes", Unstable(sym::arm_target_feature), &["neon"]),
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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), &["neon"]),
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("dsp", Unstable(sym::arm_target_feature), &[]),
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("fp-armv8", Unstable(sym::arm_target_feature), &["vfp4"]),
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("i8mm", Unstable(sym::arm_target_feature), &["neon"]),
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("mclass", Unstable(sym::arm_target_feature), &[]),
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("neon", Unstable(sym::arm_target_feature), &["vfp3"]),
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("rclass", Unstable(sym::arm_target_feature), &[]),
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("sha2", Unstable(sym::arm_target_feature), &["neon"]),
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("soft-float", Forbidden { reason: "unsound because it changes float ABI" }, &[]),
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("aclass", unstable(sym::arm_target_feature), &[]),
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("aes", unstable(sym::arm_target_feature), &["neon"]),
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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), &["neon"]),
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("dsp", unstable(sym::arm_target_feature), &[]),
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("fp-armv8", unstable(sym::arm_target_feature), &["vfp4"]),
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(
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"fpregs",
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Stability::Unstable {
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nightly_feature: sym::arm_target_feature,
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allow_toggle: |target: &Target| {
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// Only allow toggling this if the target has `soft-float` set. With `soft-float`,
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// `fpregs` isn't needed so changing it cannot affect the ABI.
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if target.has_feature("soft-float") {
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Ok(())
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} else {
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Err("unsound on hard-float targets because it changes float ABI")
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}
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},
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},
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&[],
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),
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("i8mm", unstable(sym::arm_target_feature), &["neon"]),
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("mclass", unstable(sym::arm_target_feature), &[]),
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("neon", unstable(sym::arm_target_feature), &["vfp3"]),
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("rclass", unstable(sym::arm_target_feature), &[]),
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("sha2", unstable(sym::arm_target_feature), &["neon"]),
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("soft-float", Stability::Forbidden { reason: "unsound because it changes float ABI" }, &[]),
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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", 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), &["v5te"]),
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("v6k", Unstable(sym::arm_target_feature), &["v6"]),
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("v6t2", Unstable(sym::arm_target_feature), &["v6k", "thumb2"]),
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("v7", Unstable(sym::arm_target_feature), &["v6t2"]),
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("v8", Unstable(sym::arm_target_feature), &["v7"]),
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("vfp2", Unstable(sym::arm_target_feature), &[]),
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("vfp3", Unstable(sym::arm_target_feature), &["vfp2", "d32"]),
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("vfp4", Unstable(sym::arm_target_feature), &["vfp3"]),
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("virtualization", Unstable(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), &["v5te"]),
|
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("v6k", unstable(sym::arm_target_feature), &["v6"]),
|
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("v6t2", unstable(sym::arm_target_feature), &["v6k", "thumb2"]),
|
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("v7", unstable(sym::arm_target_feature), &["v6t2"]),
|
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("v8", unstable(sym::arm_target_feature), &["v7"]),
|
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("vfp2", unstable(sym::arm_target_feature), &[]),
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("vfp3", unstable(sym::arm_target_feature), &["vfp2", "d32"]),
|
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("vfp4", unstable(sym::arm_target_feature), &["vfp3"]),
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("virtualization", unstable(sym::arm_target_feature), &[]),
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// tidy-alphabetical-end
|
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// FIXME: need to also forbid turning off `fpregs` on hardfloat targets
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];
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const AARCH64_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
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const AARCH64_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
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// tidy-alphabetical-start
|
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// FEAT_AES & FEAT_PMULL
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("aes", Stable, &["neon"]),
|
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("aes", STABLE, &["neon"]),
|
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// FEAT_BF16
|
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("bf16", Stable, &[]),
|
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("bf16", STABLE, &[]),
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// FEAT_BTI
|
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("bti", Stable, &[]),
|
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("bti", STABLE, &[]),
|
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// FEAT_CRC
|
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("crc", Stable, &[]),
|
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("crc", STABLE, &[]),
|
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// FEAT_CSSC
|
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("cssc", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
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("cssc", unstable(sym::aarch64_unstable_target_feature), &[]),
|
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// FEAT_DIT
|
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("dit", Stable, &[]),
|
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("dit", STABLE, &[]),
|
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// FEAT_DotProd
|
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("dotprod", Stable, &["neon"]),
|
||||
("dotprod", STABLE, &["neon"]),
|
||||
// FEAT_DPB
|
||||
("dpb", Stable, &[]),
|
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("dpb", STABLE, &[]),
|
||||
// FEAT_DPB2
|
||||
("dpb2", Stable, &["dpb"]),
|
||||
("dpb2", STABLE, &["dpb"]),
|
||||
// FEAT_ECV
|
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("ecv", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
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("ecv", unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
// FEAT_F32MM
|
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("f32mm", Stable, &["sve"]),
|
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("f32mm", STABLE, &["sve"]),
|
||||
// FEAT_F64MM
|
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("f64mm", Stable, &["sve"]),
|
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("f64mm", STABLE, &["sve"]),
|
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// FEAT_FAMINMAX
|
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("faminmax", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
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("faminmax", unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
// FEAT_FCMA
|
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("fcma", Stable, &["neon"]),
|
||||
("fcma", STABLE, &["neon"]),
|
||||
// FEAT_FHM
|
||||
("fhm", Stable, &["fp16"]),
|
||||
("fhm", STABLE, &["fp16"]),
|
||||
// FEAT_FLAGM
|
||||
("flagm", Stable, &[]),
|
||||
("flagm", STABLE, &[]),
|
||||
// FEAT_FLAGM2
|
||||
("flagm2", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
("flagm2", unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
// FEAT_FP16
|
||||
// Rust ties FP and Neon: https://github.com/rust-lang/rust/pull/91608
|
||||
("fp16", Stable, &["neon"]),
|
||||
("fp16", STABLE, &["neon"]),
|
||||
// FEAT_FP8
|
||||
("fp8", Unstable(sym::aarch64_unstable_target_feature), &["faminmax", "lut", "bf16"]),
|
||||
("fp8", unstable(sym::aarch64_unstable_target_feature), &["faminmax", "lut", "bf16"]),
|
||||
// FEAT_FP8DOT2
|
||||
("fp8dot2", Unstable(sym::aarch64_unstable_target_feature), &["fp8dot4"]),
|
||||
("fp8dot2", unstable(sym::aarch64_unstable_target_feature), &["fp8dot4"]),
|
||||
// FEAT_FP8DOT4
|
||||
("fp8dot4", Unstable(sym::aarch64_unstable_target_feature), &["fp8fma"]),
|
||||
("fp8dot4", unstable(sym::aarch64_unstable_target_feature), &["fp8fma"]),
|
||||
// FEAT_FP8FMA
|
||||
("fp8fma", Unstable(sym::aarch64_unstable_target_feature), &["fp8"]),
|
||||
("fp8fma", unstable(sym::aarch64_unstable_target_feature), &["fp8"]),
|
||||
// FEAT_FRINTTS
|
||||
("frintts", Stable, &[]),
|
||||
("frintts", STABLE, &[]),
|
||||
// FEAT_HBC
|
||||
("hbc", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
("hbc", unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
// FEAT_I8MM
|
||||
("i8mm", Stable, &[]),
|
||||
("i8mm", STABLE, &[]),
|
||||
// FEAT_JSCVT
|
||||
// Rust ties FP and Neon: https://github.com/rust-lang/rust/pull/91608
|
||||
("jsconv", Stable, &["neon"]),
|
||||
("jsconv", STABLE, &["neon"]),
|
||||
// FEAT_LOR
|
||||
("lor", Stable, &[]),
|
||||
("lor", STABLE, &[]),
|
||||
// FEAT_LSE
|
||||
("lse", Stable, &[]),
|
||||
("lse", STABLE, &[]),
|
||||
// FEAT_LSE128
|
||||
("lse128", Unstable(sym::aarch64_unstable_target_feature), &["lse"]),
|
||||
("lse128", unstable(sym::aarch64_unstable_target_feature), &["lse"]),
|
||||
// FEAT_LSE2
|
||||
("lse2", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
("lse2", unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
// FEAT_LUT
|
||||
("lut", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
("lut", unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
// FEAT_MOPS
|
||||
("mops", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
("mops", unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
// FEAT_MTE & FEAT_MTE2
|
||||
("mte", Stable, &[]),
|
||||
("mte", STABLE, &[]),
|
||||
// FEAT_AdvSimd & FEAT_FP
|
||||
("neon", Stable, &[]),
|
||||
("neon", STABLE, &[]),
|
||||
// FEAT_PAUTH (address authentication)
|
||||
("paca", Stable, &[]),
|
||||
("paca", STABLE, &[]),
|
||||
// FEAT_PAUTH (generic authentication)
|
||||
("pacg", Stable, &[]),
|
||||
("pacg", STABLE, &[]),
|
||||
// FEAT_PAN
|
||||
("pan", Stable, &[]),
|
||||
("pan", STABLE, &[]),
|
||||
// FEAT_PAuth_LR
|
||||
("pauth-lr", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
("pauth-lr", unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
// FEAT_PMUv3
|
||||
("pmuv3", Stable, &[]),
|
||||
("pmuv3", STABLE, &[]),
|
||||
// FEAT_RNG
|
||||
("rand", Stable, &[]),
|
||||
("rand", STABLE, &[]),
|
||||
// FEAT_RAS & FEAT_RASv1p1
|
||||
("ras", Stable, &[]),
|
||||
("ras", STABLE, &[]),
|
||||
// FEAT_LRCPC
|
||||
("rcpc", Stable, &[]),
|
||||
("rcpc", STABLE, &[]),
|
||||
// FEAT_LRCPC2
|
||||
("rcpc2", Stable, &["rcpc"]),
|
||||
("rcpc2", STABLE, &["rcpc"]),
|
||||
// FEAT_LRCPC3
|
||||
("rcpc3", Unstable(sym::aarch64_unstable_target_feature), &["rcpc2"]),
|
||||
("rcpc3", unstable(sym::aarch64_unstable_target_feature), &["rcpc2"]),
|
||||
// FEAT_RDM
|
||||
("rdm", Stable, &["neon"]),
|
||||
("rdm", STABLE, &["neon"]),
|
||||
// This is needed for inline assembly, but shouldn't be stabilized as-is
|
||||
// since it should be enabled globally using -Zfixed-x18, not
|
||||
// #[target_feature].
|
||||
// Note that cfg(target_feature = "reserve-x18") is currently not set for
|
||||
// targets that reserve x18 by default.
|
||||
("reserve-x18", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
("reserve-x18", unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
// FEAT_SB
|
||||
("sb", Stable, &[]),
|
||||
("sb", STABLE, &[]),
|
||||
// FEAT_SHA1 & FEAT_SHA256
|
||||
("sha2", Stable, &["neon"]),
|
||||
("sha2", STABLE, &["neon"]),
|
||||
// FEAT_SHA512 & FEAT_SHA3
|
||||
("sha3", Stable, &["sha2"]),
|
||||
("sha3", STABLE, &["sha2"]),
|
||||
// FEAT_SM3 & FEAT_SM4
|
||||
("sm4", Stable, &["neon"]),
|
||||
("sm4", STABLE, &["neon"]),
|
||||
// FEAT_SME
|
||||
("sme", Unstable(sym::aarch64_unstable_target_feature), &["bf16"]),
|
||||
("sme", unstable(sym::aarch64_unstable_target_feature), &["bf16"]),
|
||||
// FEAT_SME_B16B16
|
||||
("sme-b16b16", Unstable(sym::aarch64_unstable_target_feature), &["bf16", "sme2", "sve-b16b16"]),
|
||||
("sme-b16b16", unstable(sym::aarch64_unstable_target_feature), &["bf16", "sme2", "sve-b16b16"]),
|
||||
// FEAT_SME_F16F16
|
||||
("sme-f16f16", Unstable(sym::aarch64_unstable_target_feature), &["sme2"]),
|
||||
("sme-f16f16", unstable(sym::aarch64_unstable_target_feature), &["sme2"]),
|
||||
// FEAT_SME_F64F64
|
||||
("sme-f64f64", Unstable(sym::aarch64_unstable_target_feature), &["sme"]),
|
||||
("sme-f64f64", unstable(sym::aarch64_unstable_target_feature), &["sme"]),
|
||||
// FEAT_SME_F8F16
|
||||
("sme-f8f16", Unstable(sym::aarch64_unstable_target_feature), &["sme-f8f32"]),
|
||||
("sme-f8f16", unstable(sym::aarch64_unstable_target_feature), &["sme-f8f32"]),
|
||||
// FEAT_SME_F8F32
|
||||
("sme-f8f32", Unstable(sym::aarch64_unstable_target_feature), &["sme2", "fp8"]),
|
||||
("sme-f8f32", unstable(sym::aarch64_unstable_target_feature), &["sme2", "fp8"]),
|
||||
// FEAT_SME_FA64
|
||||
("sme-fa64", Unstable(sym::aarch64_unstable_target_feature), &["sme", "sve2"]),
|
||||
("sme-fa64", unstable(sym::aarch64_unstable_target_feature), &["sme", "sve2"]),
|
||||
// FEAT_SME_I16I64
|
||||
("sme-i16i64", Unstable(sym::aarch64_unstable_target_feature), &["sme"]),
|
||||
("sme-i16i64", unstable(sym::aarch64_unstable_target_feature), &["sme"]),
|
||||
// FEAT_SME_LUTv2
|
||||
("sme-lutv2", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
("sme-lutv2", unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
// FEAT_SME2
|
||||
("sme2", Unstable(sym::aarch64_unstable_target_feature), &["sme"]),
|
||||
("sme2", unstable(sym::aarch64_unstable_target_feature), &["sme"]),
|
||||
// FEAT_SME2p1
|
||||
("sme2p1", Unstable(sym::aarch64_unstable_target_feature), &["sme2"]),
|
||||
("sme2p1", unstable(sym::aarch64_unstable_target_feature), &["sme2"]),
|
||||
// FEAT_SPE
|
||||
("spe", Stable, &[]),
|
||||
("spe", STABLE, &[]),
|
||||
// FEAT_SSBS & FEAT_SSBS2
|
||||
("ssbs", Stable, &[]),
|
||||
("ssbs", STABLE, &[]),
|
||||
// FEAT_SSVE_FP8FDOT2
|
||||
("ssve-fp8dot2", Unstable(sym::aarch64_unstable_target_feature), &["ssve-fp8dot4"]),
|
||||
("ssve-fp8dot2", unstable(sym::aarch64_unstable_target_feature), &["ssve-fp8dot4"]),
|
||||
// FEAT_SSVE_FP8FDOT4
|
||||
("ssve-fp8dot4", Unstable(sym::aarch64_unstable_target_feature), &["ssve-fp8fma"]),
|
||||
("ssve-fp8dot4", unstable(sym::aarch64_unstable_target_feature), &["ssve-fp8fma"]),
|
||||
// FEAT_SSVE_FP8FMA
|
||||
("ssve-fp8fma", Unstable(sym::aarch64_unstable_target_feature), &["sme2", "fp8"]),
|
||||
("ssve-fp8fma", unstable(sym::aarch64_unstable_target_feature), &["sme2", "fp8"]),
|
||||
// FEAT_SVE
|
||||
// It was decided that SVE requires Neon: https://github.com/rust-lang/rust/pull/91608
|
||||
//
|
||||
|
|
@ -281,46 +368,46 @@ const AARCH64_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
|||
// exist together: https://developer.arm.com/documentation/102340/0100/New-features-in-SVE2
|
||||
//
|
||||
// "For backwards compatibility, Neon and VFP are required in the latest architectures."
|
||||
("sve", Stable, &["neon"]),
|
||||
("sve", STABLE, &["neon"]),
|
||||
// FEAT_SVE_B16B16 (SVE or SME Z-targeting instructions)
|
||||
("sve-b16b16", Unstable(sym::aarch64_unstable_target_feature), &["bf16"]),
|
||||
("sve-b16b16", unstable(sym::aarch64_unstable_target_feature), &["bf16"]),
|
||||
// FEAT_SVE2
|
||||
("sve2", Stable, &["sve"]),
|
||||
("sve2", STABLE, &["sve"]),
|
||||
// FEAT_SVE_AES & FEAT_SVE_PMULL128
|
||||
("sve2-aes", Stable, &["sve2", "aes"]),
|
||||
("sve2-aes", STABLE, &["sve2", "aes"]),
|
||||
// FEAT_SVE2_BitPerm
|
||||
("sve2-bitperm", Stable, &["sve2"]),
|
||||
("sve2-bitperm", STABLE, &["sve2"]),
|
||||
// FEAT_SVE2_SHA3
|
||||
("sve2-sha3", Stable, &["sve2", "sha3"]),
|
||||
("sve2-sha3", STABLE, &["sve2", "sha3"]),
|
||||
// FEAT_SVE2_SM4
|
||||
("sve2-sm4", Stable, &["sve2", "sm4"]),
|
||||
("sve2-sm4", STABLE, &["sve2", "sm4"]),
|
||||
// FEAT_SVE2p1
|
||||
("sve2p1", Unstable(sym::aarch64_unstable_target_feature), &["sve2"]),
|
||||
("sve2p1", unstable(sym::aarch64_unstable_target_feature), &["sve2"]),
|
||||
// FEAT_TME
|
||||
("tme", Stable, &[]),
|
||||
("v8.1a", Unstable(sym::aarch64_ver_target_feature), &[
|
||||
("tme", STABLE, &[]),
|
||||
("v8.1a", unstable(sym::aarch64_ver_target_feature), &[
|
||||
"crc", "lse", "rdm", "pan", "lor", "vh",
|
||||
]),
|
||||
("v8.2a", Unstable(sym::aarch64_ver_target_feature), &["v8.1a", "ras", "dpb"]),
|
||||
("v8.3a", Unstable(sym::aarch64_ver_target_feature), &[
|
||||
("v8.2a", unstable(sym::aarch64_ver_target_feature), &["v8.1a", "ras", "dpb"]),
|
||||
("v8.3a", unstable(sym::aarch64_ver_target_feature), &[
|
||||
"v8.2a", "rcpc", "paca", "pacg", "jsconv",
|
||||
]),
|
||||
("v8.4a", Unstable(sym::aarch64_ver_target_feature), &["v8.3a", "dotprod", "dit", "flagm"]),
|
||||
("v8.5a", Unstable(sym::aarch64_ver_target_feature), &["v8.4a", "ssbs", "sb", "dpb2", "bti"]),
|
||||
("v8.6a", Unstable(sym::aarch64_ver_target_feature), &["v8.5a", "bf16", "i8mm"]),
|
||||
("v8.7a", Unstable(sym::aarch64_ver_target_feature), &["v8.6a", "wfxt"]),
|
||||
("v8.8a", Unstable(sym::aarch64_ver_target_feature), &["v8.7a", "hbc", "mops"]),
|
||||
("v8.9a", Unstable(sym::aarch64_ver_target_feature), &["v8.8a", "cssc"]),
|
||||
("v9.1a", Unstable(sym::aarch64_ver_target_feature), &["v9a", "v8.6a"]),
|
||||
("v9.2a", Unstable(sym::aarch64_ver_target_feature), &["v9.1a", "v8.7a"]),
|
||||
("v9.3a", Unstable(sym::aarch64_ver_target_feature), &["v9.2a", "v8.8a"]),
|
||||
("v9.4a", Unstable(sym::aarch64_ver_target_feature), &["v9.3a", "v8.9a"]),
|
||||
("v9.5a", Unstable(sym::aarch64_ver_target_feature), &["v9.4a"]),
|
||||
("v9a", Unstable(sym::aarch64_ver_target_feature), &["v8.5a", "sve2"]),
|
||||
("v8.4a", unstable(sym::aarch64_ver_target_feature), &["v8.3a", "dotprod", "dit", "flagm"]),
|
||||
("v8.5a", unstable(sym::aarch64_ver_target_feature), &["v8.4a", "ssbs", "sb", "dpb2", "bti"]),
|
||||
("v8.6a", unstable(sym::aarch64_ver_target_feature), &["v8.5a", "bf16", "i8mm"]),
|
||||
("v8.7a", unstable(sym::aarch64_ver_target_feature), &["v8.6a", "wfxt"]),
|
||||
("v8.8a", unstable(sym::aarch64_ver_target_feature), &["v8.7a", "hbc", "mops"]),
|
||||
("v8.9a", unstable(sym::aarch64_ver_target_feature), &["v8.8a", "cssc"]),
|
||||
("v9.1a", unstable(sym::aarch64_ver_target_feature), &["v9a", "v8.6a"]),
|
||||
("v9.2a", unstable(sym::aarch64_ver_target_feature), &["v9.1a", "v8.7a"]),
|
||||
("v9.3a", unstable(sym::aarch64_ver_target_feature), &["v9.2a", "v8.8a"]),
|
||||
("v9.4a", unstable(sym::aarch64_ver_target_feature), &["v9.3a", "v8.9a"]),
|
||||
("v9.5a", unstable(sym::aarch64_ver_target_feature), &["v9.4a"]),
|
||||
("v9a", unstable(sym::aarch64_ver_target_feature), &["v8.5a", "sve2"]),
|
||||
// FEAT_VHE
|
||||
("vh", Stable, &[]),
|
||||
("vh", STABLE, &[]),
|
||||
// FEAT_WFxT
|
||||
("wfxt", Unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
("wfxt", unstable(sym::aarch64_unstable_target_feature), &[]),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
|
|
@ -328,241 +415,256 @@ const AARCH64_TIED_FEATURES: &[&[&str]] = &[
|
|||
&["paca", "pacg"], // Together these represent `pauth` in LLVM
|
||||
];
|
||||
|
||||
const X86_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
||||
const X86_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("adx", Stable, &[]),
|
||||
("aes", Stable, &["sse2"]),
|
||||
("amx-bf16", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
|
||||
("amx-complex", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
|
||||
("amx-fp16", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
|
||||
("amx-int8", Unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
|
||||
("amx-tile", Unstable(sym::x86_amx_intrinsics), &[]),
|
||||
("avx", Stable, &["sse4.2"]),
|
||||
("avx2", Stable, &["avx"]),
|
||||
("avx512bf16", Unstable(sym::avx512_target_feature), &["avx512bw"]),
|
||||
("avx512bitalg", Unstable(sym::avx512_target_feature), &["avx512bw"]),
|
||||
("avx512bw", Unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512cd", Unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512dq", Unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512f", Unstable(sym::avx512_target_feature), &["avx2", "fma", "f16c"]),
|
||||
("avx512fp16", Unstable(sym::avx512_target_feature), &["avx512bw", "avx512vl", "avx512dq"]),
|
||||
("avx512ifma", Unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512vbmi", Unstable(sym::avx512_target_feature), &["avx512bw"]),
|
||||
("avx512vbmi2", Unstable(sym::avx512_target_feature), &["avx512bw"]),
|
||||
("avx512vl", Unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512vnni", Unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512vp2intersect", Unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512vpopcntdq", Unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avxifma", Unstable(sym::avx512_target_feature), &["avx2"]),
|
||||
("avxneconvert", Unstable(sym::avx512_target_feature), &["avx2"]),
|
||||
("avxvnni", Unstable(sym::avx512_target_feature), &["avx2"]),
|
||||
("avxvnniint16", Unstable(sym::avx512_target_feature), &["avx2"]),
|
||||
("avxvnniint8", Unstable(sym::avx512_target_feature), &["avx2"]),
|
||||
("bmi1", Stable, &[]),
|
||||
("bmi2", Stable, &[]),
|
||||
("cmpxchg16b", Stable, &[]),
|
||||
("ermsb", Unstable(sym::ermsb_target_feature), &[]),
|
||||
("f16c", Stable, &["avx"]),
|
||||
("fma", Stable, &["avx"]),
|
||||
("fxsr", Stable, &[]),
|
||||
("gfni", Unstable(sym::avx512_target_feature), &["sse2"]),
|
||||
("lahfsahf", Unstable(sym::lahfsahf_target_feature), &[]),
|
||||
("lzcnt", Stable, &[]),
|
||||
("movbe", Stable, &[]),
|
||||
("pclmulqdq", Stable, &["sse2"]),
|
||||
("popcnt", Stable, &[]),
|
||||
("prfchw", Unstable(sym::prfchw_target_feature), &[]),
|
||||
("rdrand", Stable, &[]),
|
||||
("rdseed", Stable, &[]),
|
||||
("rtm", Unstable(sym::rtm_target_feature), &[]),
|
||||
("sha", Stable, &["sse2"]),
|
||||
("sha512", Unstable(sym::sha512_sm_x86), &["avx2"]),
|
||||
("sm3", Unstable(sym::sha512_sm_x86), &["avx"]),
|
||||
("sm4", Unstable(sym::sha512_sm_x86), &["avx2"]),
|
||||
("soft-float", Forbidden { reason: "unsound because it changes float ABI" }, &[]),
|
||||
("sse", Stable, &[]),
|
||||
("sse2", Stable, &["sse"]),
|
||||
("sse3", Stable, &["sse2"]),
|
||||
("sse4.1", Stable, &["ssse3"]),
|
||||
("sse4.2", Stable, &["sse4.1"]),
|
||||
("sse4a", Unstable(sym::sse4a_target_feature), &["sse3"]),
|
||||
("ssse3", Stable, &["sse3"]),
|
||||
("tbm", Unstable(sym::tbm_target_feature), &[]),
|
||||
("vaes", Unstable(sym::avx512_target_feature), &["avx2", "aes"]),
|
||||
("vpclmulqdq", Unstable(sym::avx512_target_feature), &["avx", "pclmulqdq"]),
|
||||
("xop", Unstable(sym::xop_target_feature), &[/*"fma4", */ "avx", "sse4a"]),
|
||||
("xsave", Stable, &[]),
|
||||
("xsavec", Stable, &["xsave"]),
|
||||
("xsaveopt", Stable, &["xsave"]),
|
||||
("xsaves", Stable, &["xsave"]),
|
||||
// tidy-alphabetical-end
|
||||
// FIXME: need to also forbid turning off `x87` on hardfloat targets
|
||||
];
|
||||
|
||||
const HEXAGON_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("hvx", Unstable(sym::hexagon_target_feature), &[]),
|
||||
("hvx-length128b", Unstable(sym::hexagon_target_feature), &["hvx"]),
|
||||
("adx", STABLE, &[]),
|
||||
("aes", STABLE, &["sse2"]),
|
||||
("amx-bf16", unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
|
||||
("amx-complex", unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
|
||||
("amx-fp16", unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
|
||||
("amx-int8", unstable(sym::x86_amx_intrinsics), &["amx-tile"]),
|
||||
("amx-tile", unstable(sym::x86_amx_intrinsics), &[]),
|
||||
("avx", STABLE, &["sse4.2"]),
|
||||
("avx2", STABLE, &["avx"]),
|
||||
("avx512bf16", unstable(sym::avx512_target_feature), &["avx512bw"]),
|
||||
("avx512bitalg", unstable(sym::avx512_target_feature), &["avx512bw"]),
|
||||
("avx512bw", unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512cd", unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512dq", unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512f", unstable(sym::avx512_target_feature), &["avx2", "fma", "f16c"]),
|
||||
("avx512fp16", unstable(sym::avx512_target_feature), &["avx512bw", "avx512vl", "avx512dq"]),
|
||||
("avx512ifma", unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512vbmi", unstable(sym::avx512_target_feature), &["avx512bw"]),
|
||||
("avx512vbmi2", unstable(sym::avx512_target_feature), &["avx512bw"]),
|
||||
("avx512vl", unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512vnni", unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512vp2intersect", unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avx512vpopcntdq", unstable(sym::avx512_target_feature), &["avx512f"]),
|
||||
("avxifma", unstable(sym::avx512_target_feature), &["avx2"]),
|
||||
("avxneconvert", unstable(sym::avx512_target_feature), &["avx2"]),
|
||||
("avxvnni", unstable(sym::avx512_target_feature), &["avx2"]),
|
||||
("avxvnniint16", unstable(sym::avx512_target_feature), &["avx2"]),
|
||||
("avxvnniint8", unstable(sym::avx512_target_feature), &["avx2"]),
|
||||
("bmi1", STABLE, &[]),
|
||||
("bmi2", STABLE, &[]),
|
||||
("cmpxchg16b", STABLE, &[]),
|
||||
("ermsb", unstable(sym::ermsb_target_feature), &[]),
|
||||
("f16c", STABLE, &["avx"]),
|
||||
("fma", STABLE, &["avx"]),
|
||||
("fxsr", STABLE, &[]),
|
||||
("gfni", unstable(sym::avx512_target_feature), &["sse2"]),
|
||||
("lahfsahf", unstable(sym::lahfsahf_target_feature), &[]),
|
||||
("lzcnt", STABLE, &[]),
|
||||
("movbe", STABLE, &[]),
|
||||
("pclmulqdq", STABLE, &["sse2"]),
|
||||
("popcnt", STABLE, &[]),
|
||||
("prfchw", unstable(sym::prfchw_target_feature), &[]),
|
||||
("rdrand", STABLE, &[]),
|
||||
("rdseed", STABLE, &[]),
|
||||
("rtm", unstable(sym::rtm_target_feature), &[]),
|
||||
("sha", STABLE, &["sse2"]),
|
||||
("sha512", unstable(sym::sha512_sm_x86), &["avx2"]),
|
||||
("sm3", unstable(sym::sha512_sm_x86), &["avx"]),
|
||||
("sm4", unstable(sym::sha512_sm_x86), &["avx2"]),
|
||||
("soft-float", Stability::Forbidden { reason: "unsound because it changes float ABI" }, &[]),
|
||||
("sse", STABLE, &[]),
|
||||
("sse2", STABLE, &["sse"]),
|
||||
("sse3", STABLE, &["sse2"]),
|
||||
("sse4.1", STABLE, &["ssse3"]),
|
||||
("sse4.2", STABLE, &["sse4.1"]),
|
||||
("sse4a", unstable(sym::sse4a_target_feature), &["sse3"]),
|
||||
("ssse3", STABLE, &["sse3"]),
|
||||
("tbm", unstable(sym::tbm_target_feature), &[]),
|
||||
("vaes", unstable(sym::avx512_target_feature), &["avx2", "aes"]),
|
||||
("vpclmulqdq", unstable(sym::avx512_target_feature), &["avx", "pclmulqdq"]),
|
||||
(
|
||||
"x87",
|
||||
Stability::Unstable {
|
||||
nightly_feature: sym::x87_target_feature,
|
||||
allow_toggle: |target: &Target| {
|
||||
// Only allow toggling this if the target has `soft-float` set. With `soft-float`,
|
||||
// `fpregs` isn't needed so changing it cannot affect the ABI.
|
||||
if target.has_feature("soft-float") {
|
||||
Ok(())
|
||||
} else {
|
||||
Err("unsound on hard-float targets because it changes float ABI")
|
||||
}
|
||||
},
|
||||
},
|
||||
&[],
|
||||
),
|
||||
("xop", unstable(sym::xop_target_feature), &[/*"fma4", */ "avx", "sse4a"]),
|
||||
("xsave", STABLE, &[]),
|
||||
("xsavec", STABLE, &["xsave"]),
|
||||
("xsaveopt", STABLE, &["xsave"]),
|
||||
("xsaves", STABLE, &["xsave"]),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const POWERPC_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
||||
const HEXAGON_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("altivec", Unstable(sym::powerpc_target_feature), &[]),
|
||||
("partword-atomics", Unstable(sym::powerpc_target_feature), &[]),
|
||||
("power10-vector", Unstable(sym::powerpc_target_feature), &["power9-vector"]),
|
||||
("power8-altivec", Unstable(sym::powerpc_target_feature), &["altivec"]),
|
||||
("power8-crypto", Unstable(sym::powerpc_target_feature), &["power8-altivec"]),
|
||||
("power8-vector", Unstable(sym::powerpc_target_feature), &["vsx", "power8-altivec"]),
|
||||
("power9-altivec", Unstable(sym::powerpc_target_feature), &["power8-altivec"]),
|
||||
("power9-vector", Unstable(sym::powerpc_target_feature), &["power8-vector", "power9-altivec"]),
|
||||
("quadword-atomics", Unstable(sym::powerpc_target_feature), &[]),
|
||||
("vsx", Unstable(sym::powerpc_target_feature), &["altivec"]),
|
||||
("hvx", unstable(sym::hexagon_target_feature), &[]),
|
||||
("hvx-length128b", unstable(sym::hexagon_target_feature), &["hvx"]),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const MIPS_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
||||
const POWERPC_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("fp64", Unstable(sym::mips_target_feature), &[]),
|
||||
("msa", Unstable(sym::mips_target_feature), &[]),
|
||||
("virt", Unstable(sym::mips_target_feature), &[]),
|
||||
("altivec", unstable(sym::powerpc_target_feature), &[]),
|
||||
("partword-atomics", unstable(sym::powerpc_target_feature), &[]),
|
||||
("power10-vector", unstable(sym::powerpc_target_feature), &["power9-vector"]),
|
||||
("power8-altivec", unstable(sym::powerpc_target_feature), &["altivec"]),
|
||||
("power8-crypto", unstable(sym::powerpc_target_feature), &["power8-altivec"]),
|
||||
("power8-vector", unstable(sym::powerpc_target_feature), &["vsx", "power8-altivec"]),
|
||||
("power9-altivec", unstable(sym::powerpc_target_feature), &["power8-altivec"]),
|
||||
("power9-vector", unstable(sym::powerpc_target_feature), &["power8-vector", "power9-altivec"]),
|
||||
("quadword-atomics", unstable(sym::powerpc_target_feature), &[]),
|
||||
("vsx", unstable(sym::powerpc_target_feature), &["altivec"]),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const RISCV_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
||||
const MIPS_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("a", Stable, &["zaamo", "zalrsc"]),
|
||||
("c", Stable, &[]),
|
||||
("d", Unstable(sym::riscv_target_feature), &["f"]),
|
||||
("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), &[]),
|
||||
("zaamo", Unstable(sym::riscv_target_feature), &[]),
|
||||
("zabha", Unstable(sym::riscv_target_feature), &["zaamo"]),
|
||||
("zalrsc", 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), &["zfinx"]),
|
||||
("zfh", Unstable(sym::riscv_target_feature), &["zfhmin"]),
|
||||
("zfhmin", Unstable(sym::riscv_target_feature), &["f"]),
|
||||
("zfinx", Unstable(sym::riscv_target_feature), &[]),
|
||||
("zhinx", Unstable(sym::riscv_target_feature), &["zhinxmin"]),
|
||||
("zhinxmin", Unstable(sym::riscv_target_feature), &["zfinx"]),
|
||||
("zk", Stable, &["zkn", "zkr", "zkt"]),
|
||||
("zkn", Stable, &["zbkb", "zbkc", "zbkx", "zkne", "zknd", "zknh"]),
|
||||
("zknd", Stable, &[]),
|
||||
("zkne", Stable, &[]),
|
||||
("zknh", Stable, &[]),
|
||||
("zkr", Stable, &[]),
|
||||
("zks", Stable, &["zbkb", "zbkc", "zbkx", "zksed", "zksh"]),
|
||||
("zksed", Stable, &[]),
|
||||
("zksh", Stable, &[]),
|
||||
("zkt", Stable, &[]),
|
||||
("fp64", unstable(sym::mips_target_feature), &[]),
|
||||
("msa", unstable(sym::mips_target_feature), &[]),
|
||||
("virt", unstable(sym::mips_target_feature), &[]),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const WASM_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
||||
const RISCV_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("atomics", Unstable(sym::wasm_target_feature), &[]),
|
||||
("bulk-memory", Stable, &[]),
|
||||
("exception-handling", Unstable(sym::wasm_target_feature), &[]),
|
||||
("extended-const", Stable, &[]),
|
||||
("multivalue", Stable, &[]),
|
||||
("mutable-globals", Stable, &[]),
|
||||
("nontrapping-fptoint", Stable, &[]),
|
||||
("reference-types", Stable, &[]),
|
||||
("relaxed-simd", Stable, &["simd128"]),
|
||||
("sign-ext", Stable, &[]),
|
||||
("simd128", Stable, &[]),
|
||||
("tail-call", Stable, &[]),
|
||||
("wide-arithmetic", Unstable(sym::wasm_target_feature), &[]),
|
||||
("a", STABLE, &["zaamo", "zalrsc"]),
|
||||
("c", STABLE, &[]),
|
||||
("d", unstable(sym::riscv_target_feature), &["f"]),
|
||||
("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), &[]),
|
||||
("zaamo", unstable(sym::riscv_target_feature), &[]),
|
||||
("zabha", unstable(sym::riscv_target_feature), &["zaamo"]),
|
||||
("zalrsc", 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), &["zfinx"]),
|
||||
("zfh", unstable(sym::riscv_target_feature), &["zfhmin"]),
|
||||
("zfhmin", unstable(sym::riscv_target_feature), &["f"]),
|
||||
("zfinx", unstable(sym::riscv_target_feature), &[]),
|
||||
("zhinx", unstable(sym::riscv_target_feature), &["zhinxmin"]),
|
||||
("zhinxmin", unstable(sym::riscv_target_feature), &["zfinx"]),
|
||||
("zk", STABLE, &["zkn", "zkr", "zkt"]),
|
||||
("zkn", STABLE, &["zbkb", "zbkc", "zbkx", "zkne", "zknd", "zknh"]),
|
||||
("zknd", STABLE, &[]),
|
||||
("zkne", STABLE, &[]),
|
||||
("zknh", STABLE, &[]),
|
||||
("zkr", STABLE, &[]),
|
||||
("zks", STABLE, &["zbkb", "zbkc", "zbkx", "zksed", "zksh"]),
|
||||
("zksed", STABLE, &[]),
|
||||
("zksh", STABLE, &[]),
|
||||
("zkt", STABLE, &[]),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const BPF_FEATURES: &[(&str, Stability, ImpliedFeatures)] =
|
||||
&[("alu32", Unstable(sym::bpf_target_feature), &[])];
|
||||
|
||||
const CSKY_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
||||
const WASM_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("10e60", Unstable(sym::csky_target_feature), &["7e10"]),
|
||||
("2e3", Unstable(sym::csky_target_feature), &["e2"]),
|
||||
("3e3r1", Unstable(sym::csky_target_feature), &[]),
|
||||
("3e3r2", Unstable(sym::csky_target_feature), &["3e3r1", "doloop"]),
|
||||
("3e3r3", Unstable(sym::csky_target_feature), &["doloop"]),
|
||||
("3e7", Unstable(sym::csky_target_feature), &["2e3"]),
|
||||
("7e10", Unstable(sym::csky_target_feature), &["3e7"]),
|
||||
("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), &["elrw"]),
|
||||
("e2", Unstable(sym::csky_target_feature), &["e2"]),
|
||||
("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), &["2e3"]),
|
||||
("mp1e2", Unstable(sym::csky_target_feature), &["3e7"]),
|
||||
("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), &[]),
|
||||
("atomics", unstable(sym::wasm_target_feature), &[]),
|
||||
("bulk-memory", STABLE, &[]),
|
||||
("exception-handling", unstable(sym::wasm_target_feature), &[]),
|
||||
("extended-const", STABLE, &[]),
|
||||
("multivalue", STABLE, &[]),
|
||||
("mutable-globals", STABLE, &[]),
|
||||
("nontrapping-fptoint", STABLE, &[]),
|
||||
("reference-types", STABLE, &[]),
|
||||
("relaxed-simd", STABLE, &["simd128"]),
|
||||
("sign-ext", STABLE, &[]),
|
||||
("simd128", STABLE, &[]),
|
||||
("tail-call", STABLE, &[]),
|
||||
("wide-arithmetic", unstable(sym::wasm_target_feature), &[]),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const BPF_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] =
|
||||
&[("alu32", unstable(sym::bpf_target_feature), &[])];
|
||||
|
||||
const CSKY_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("10e60", unstable(sym::csky_target_feature), &["7e10"]),
|
||||
("2e3", unstable(sym::csky_target_feature), &["e2"]),
|
||||
("3e3r1", unstable(sym::csky_target_feature), &[]),
|
||||
("3e3r2", unstable(sym::csky_target_feature), &["3e3r1", "doloop"]),
|
||||
("3e3r3", unstable(sym::csky_target_feature), &["doloop"]),
|
||||
("3e7", unstable(sym::csky_target_feature), &["2e3"]),
|
||||
("7e10", unstable(sym::csky_target_feature), &["3e7"]),
|
||||
("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), &["elrw"]),
|
||||
("e2", unstable(sym::csky_target_feature), &["e2"]),
|
||||
("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), &["2e3"]),
|
||||
("mp1e2", unstable(sym::csky_target_feature), &["3e7"]),
|
||||
("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", 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), &[]),
|
||||
("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_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
||||
const LOONGARCH_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("d", Unstable(sym::loongarch_target_feature), &["f"]),
|
||||
("f", Unstable(sym::loongarch_target_feature), &[]),
|
||||
("frecipe", Unstable(sym::loongarch_target_feature), &[]),
|
||||
("lasx", Unstable(sym::loongarch_target_feature), &["lsx"]),
|
||||
("lbt", Unstable(sym::loongarch_target_feature), &[]),
|
||||
("lsx", Unstable(sym::loongarch_target_feature), &["d"]),
|
||||
("lvz", Unstable(sym::loongarch_target_feature), &[]),
|
||||
("relax", Unstable(sym::loongarch_target_feature), &[]),
|
||||
("ual", Unstable(sym::loongarch_target_feature), &[]),
|
||||
("d", unstable(sym::loongarch_target_feature), &["f"]),
|
||||
("f", unstable(sym::loongarch_target_feature), &[]),
|
||||
("frecipe", unstable(sym::loongarch_target_feature), &[]),
|
||||
("lasx", unstable(sym::loongarch_target_feature), &["lsx"]),
|
||||
("lbt", unstable(sym::loongarch_target_feature), &[]),
|
||||
("lsx", unstable(sym::loongarch_target_feature), &["d"]),
|
||||
("lvz", unstable(sym::loongarch_target_feature), &[]),
|
||||
("relax", unstable(sym::loongarch_target_feature), &[]),
|
||||
("ual", unstable(sym::loongarch_target_feature), &[]),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const IBMZ_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
||||
const IBMZ_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("backchain", Unstable(sym::s390x_target_feature), &[]),
|
||||
("vector", Unstable(sym::s390x_target_feature), &[]),
|
||||
("backchain", unstable(sym::s390x_target_feature), &[]),
|
||||
("vector", unstable(sym::s390x_target_feature), &[]),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
const SPARC_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
||||
const SPARC_FEATURES: &[(&str, StabilityUncomputed, ImpliedFeatures)] = &[
|
||||
// tidy-alphabetical-start
|
||||
("leoncasa", Unstable(sym::sparc_target_feature), &[]),
|
||||
("v8plus", Unstable(sym::sparc_target_feature), &[]),
|
||||
("v9", Unstable(sym::sparc_target_feature), &[]),
|
||||
("leoncasa", unstable(sym::sparc_target_feature), &[]),
|
||||
("v8plus", unstable(sym::sparc_target_feature), &[]),
|
||||
("v9", unstable(sym::sparc_target_feature), &[]),
|
||||
// tidy-alphabetical-end
|
||||
];
|
||||
|
||||
|
|
@ -570,7 +672,7 @@ const SPARC_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
|
|||
/// primitives may be documented.
|
||||
///
|
||||
/// IMPORTANT: If you're adding another feature list above, make sure to add it to this iterator!
|
||||
pub fn all_rust_features() -> impl Iterator<Item = (&'static str, Stability)> {
|
||||
pub fn all_rust_features() -> impl Iterator<Item = (&'static str, StabilityUncomputed)> {
|
||||
std::iter::empty()
|
||||
.chain(ARM_FEATURES.iter())
|
||||
.chain(AARCH64_FEATURES.iter())
|
||||
|
|
@ -614,8 +716,10 @@ const CSKY_FEATURES_FOR_CORRECT_VECTOR_ABI: &'static [(u64, &'static str)] = &[(
|
|||
const LOONGARCH_FEATURES_FOR_CORRECT_VECTOR_ABI: &'static [(u64, &'static str)] =
|
||||
&[(128, "lsx"), (256, "lasx")];
|
||||
|
||||
impl super::spec::Target {
|
||||
pub fn rust_target_features(&self) -> &'static [(&'static str, Stability, ImpliedFeatures)] {
|
||||
impl Target {
|
||||
pub fn rust_target_features(
|
||||
&self,
|
||||
) -> &'static [(&'static str, StabilityUncomputed, ImpliedFeatures)] {
|
||||
match &*self.arch {
|
||||
"arm" => ARM_FEATURES,
|
||||
"aarch64" | "arm64ec" => AARCH64_FEATURES,
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue