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Rollup merge of #118908 - Urgau:check-cfg-target-features, r=TaKO8Ki,GuillaumeGomez,workingjubilee

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Add all known `target_feature` configs to check-cfg

This PR adds all the known `target_feature` from ~~`rustc_codegen_ssa`~~ `rustc_target` to the well known list of check-cfg.

It does so by moving the list from `rustc_codegen_ssa` to `rustc_target` ~~`rustc_session` (I not sure about this, but some of the moved function take a `Session`)~~, then using it the `fill_well_known` function.

This already proved to be useful since portable-simd had a bad cfg.

cc `@nnethercote` (since we discussed it in https://github.com/rust-lang/rust/pull/118494)
This commit is contained in:
Jubilee 2023-12-14 16:07:47 -08:00 committed by GitHub
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10 changed files with 484 additions and 460 deletions
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8
compiler/rustc_codegen_gcc/src/gcc_util.rs
View File

@ -2,12 +2,10 @@
use gccjit::Context; use gccjit::Context;
use smallvec::{smallvec, SmallVec}; use smallvec::{smallvec, SmallVec};
use rustc_codegen_ssa::target_features::{
supported_target_features, tied_target_features, RUSTC_SPECIFIC_FEATURES,
};
use rustc_data_structures::fx::FxHashMap; use rustc_data_structures::fx::FxHashMap;
use rustc_middle::bug; use rustc_middle::bug;
use rustc_session::Session; use rustc_session::Session;
use rustc_target::target_features::RUSTC_SPECIFIC_FEATURES;
use crate::errors::{PossibleFeature, TargetFeatureDisableOrEnable, UnknownCTargetFeature, UnknownCTargetFeaturePrefix}; use crate::errors::{PossibleFeature, TargetFeatureDisableOrEnable, UnknownCTargetFeature, UnknownCTargetFeaturePrefix};
@ -44,7 +42,7 @@ pub(crate) fn global_gcc_features(sess: &Session, diagnostics: bool) -> Vec<Stri
); );
// -Ctarget-features // -Ctarget-features
let supported_features = supported_target_features(sess); let supported_features = sess.target.supported_target_features();
let mut featsmap = FxHashMap::default(); let mut featsmap = FxHashMap::default();
let feats = sess.opts.cg.target_feature let feats = sess.opts.cg.target_feature
.split(',') .split(',')
@ -187,7 +185,7 @@ fn backend_feature_name(s: &str) -> Option<&str> {
// Given a map from target_features to whether they are enabled or disabled, // Given a map from target_features to whether they are enabled or disabled,
// ensure only valid combinations are allowed. // ensure only valid combinations are allowed.
pub fn check_tied_features(sess: &Session, features: &FxHashMap<&str, bool>) -> Option<&'static [&'static str]> { pub fn check_tied_features(sess: &Session, features: &FxHashMap<&str, bool>) -> Option<&'static [&'static str]> {
for tied in tied_target_features(sess) { for tied in sess.target.tied_target_features() {
// Tied features must be set to the same value, or not set at all // Tied features must be set to the same value, or not set at all
let mut tied_iter = tied.iter(); let mut tied_iter = tied.iter();
let enabled = features.get(tied_iter.next().unwrap()); let enabled = features.get(tied_iter.next().unwrap());

5
compiler/rustc_codegen_gcc/src/lib.rs
View File

@ -97,7 +97,6 @@
use rustc_codegen_ssa::base::codegen_crate; use rustc_codegen_ssa::base::codegen_crate;
use rustc_codegen_ssa::back::write::{CodegenContext, FatLtoInput, ModuleConfig, TargetMachineFactoryFn}; use rustc_codegen_ssa::back::write::{CodegenContext, FatLtoInput, ModuleConfig, TargetMachineFactoryFn};
use rustc_codegen_ssa::back::lto::{LtoModuleCodegen, SerializedModule, ThinModule}; use rustc_codegen_ssa::back::lto::{LtoModuleCodegen, SerializedModule, ThinModule};
use rustc_codegen_ssa::target_features::supported_target_features;
use rustc_data_structures::fx::FxIndexMap; use rustc_data_structures::fx::FxIndexMap;
use rustc_data_structures::sync::IntoDynSyncSend; use rustc_data_structures::sync::IntoDynSyncSend;
use rustc_codegen_ssa::traits::{CodegenBackend, ExtraBackendMethods, ThinBufferMethods, WriteBackendMethods}; use rustc_codegen_ssa::traits::{CodegenBackend, ExtraBackendMethods, ThinBufferMethods, WriteBackendMethods};
@ -397,7 +396,9 @@ fn to_gcc_opt_level(optlevel: Option<OptLevel>) -> OptimizationLevel {
} }
pub fn target_features(sess: &Session, allow_unstable: bool, target_info: &LockedTargetInfo) -> Vec<Symbol> { pub fn target_features(sess: &Session, allow_unstable: bool, target_info: &LockedTargetInfo) -> Vec<Symbol> {
supported_target_features(sess) sess
.target
.supported_target_features()
.iter() .iter()
.filter_map( .filter_map(
|&(feature, gate)| { |&(feature, gate)| {

15
compiler/rustc_codegen_llvm/src/llvm_util.rs
View File

@ -5,9 +5,6 @@
}; };
use crate::llvm; use crate::llvm;
use libc::c_int; use libc::c_int;
use rustc_codegen_ssa::target_features::{
supported_target_features, tied_target_features, RUSTC_SPECIFIC_FEATURES,
};
use rustc_codegen_ssa::traits::PrintBackendInfo; use rustc_codegen_ssa::traits::PrintBackendInfo;
use rustc_data_structures::fx::{FxHashMap, FxHashSet}; use rustc_data_structures::fx::{FxHashMap, FxHashSet};
use rustc_data_structures::small_c_str::SmallCStr; use rustc_data_structures::small_c_str::SmallCStr;
@ -17,6 +14,7 @@
use rustc_session::Session; use rustc_session::Session;
use rustc_span::symbol::Symbol; use rustc_span::symbol::Symbol;
use rustc_target::spec::{MergeFunctions, PanicStrategy}; use rustc_target::spec::{MergeFunctions, PanicStrategy};
use rustc_target::target_features::RUSTC_SPECIFIC_FEATURES;
use std::ffi::{c_char, c_void, CStr, CString}; use std::ffi::{c_char, c_void, CStr, CString};
use std::path::Path; use std::path::Path;
@ -278,7 +276,7 @@ pub fn check_tied_features(
features: &FxHashMap<&str, bool>, features: &FxHashMap<&str, bool>,
) -> Option<&'static [&'static str]> { ) -> Option<&'static [&'static str]> {
if !features.is_empty() { if !features.is_empty() {
for tied in tied_target_features(sess) { for tied in sess.target.tied_target_features() {
// Tied features must be set to the same value, or not set at all // Tied features must be set to the same value, or not set at all
let mut tied_iter = tied.iter(); let mut tied_iter = tied.iter();
let enabled = features.get(tied_iter.next().unwrap()); let enabled = features.get(tied_iter.next().unwrap());
@ -294,7 +292,8 @@ pub fn check_tied_features(
/// Must express features in the way Rust understands them /// Must express features in the way Rust understands them
pub fn target_features(sess: &Session, allow_unstable: bool) -> Vec<Symbol> { pub fn target_features(sess: &Session, allow_unstable: bool) -> Vec<Symbol> {
let target_machine = create_informational_target_machine(sess); let target_machine = create_informational_target_machine(sess);
supported_target_features(sess) sess.target
.supported_target_features()
.iter() .iter()
.filter_map(|&(feature, gate)| { .filter_map(|&(feature, gate)| {
if sess.is_nightly_build() || allow_unstable || gate.is_stable() { if sess.is_nightly_build() || allow_unstable || gate.is_stable() {
@ -362,7 +361,9 @@ fn llvm_target_features(tm: &llvm::TargetMachine) -> Vec<(&str, &str)> {
fn print_target_features(out: &mut dyn PrintBackendInfo, sess: &Session, tm: &llvm::TargetMachine) { fn print_target_features(out: &mut dyn PrintBackendInfo, sess: &Session, tm: &llvm::TargetMachine) {
let mut llvm_target_features = llvm_target_features(tm); let mut llvm_target_features = llvm_target_features(tm);
let mut known_llvm_target_features = FxHashSet::<&'static str>::default(); let mut known_llvm_target_features = FxHashSet::<&'static str>::default();
let mut rustc_target_features = supported_target_features(sess) let mut rustc_target_features = sess
.target
.supported_target_features()
.iter() .iter()
.map(|(feature, _gate)| { .map(|(feature, _gate)| {
// LLVM asserts that these are sorted. LLVM and Rust both use byte comparison for these strings. // LLVM asserts that these are sorted. LLVM and Rust both use byte comparison for these strings.
@ -515,7 +516,7 @@ pub(crate) fn global_llvm_features(sess: &Session, diagnostics: bool) -> Vec<Str
); );
// -Ctarget-features // -Ctarget-features
let supported_features = supported_target_features(sess); let supported_features = sess.target.supported_target_features();
let mut featsmap = FxHashMap::default(); let mut featsmap = FxHashMap::default();
let feats = sess let feats = sess
.opts .opts

434
compiler/rustc_codegen_ssa/src/target_features.rs
View File

@ -11,436 +11,10 @@
use rustc_middle::query::Providers; use rustc_middle::query::Providers;
use rustc_middle::ty::TyCtxt; use rustc_middle::ty::TyCtxt;
use rustc_session::parse::feature_err; use rustc_session::parse::feature_err;
use rustc_session::Session;
use rustc_span::symbol::sym; use rustc_span::symbol::sym;
use rustc_span::symbol::Symbol; use rustc_span::symbol::Symbol;
use rustc_span::Span; use rustc_span::Span;
/// Features that control behaviour of rustc, rather than the codegen.
pub const RUSTC_SPECIFIC_FEATURES: &[&str] = &["crt-static"];
/// Stability information for target features.
#[derive(Debug, Clone, Copy)]
pub enum Stability {
/// This target feature is stable, it can be used in `#[target_feature]` and
/// `#[cfg(target_feature)]`.
Stable,
/// This target feature is unstable; using it in `#[target_feature]` or `#[cfg(target_feature)]`
/// requires enabling the given nightly feature.
Unstable(Symbol),
}
use Stability::*;
impl Stability {
fn as_feature_name(self) -> Option<Symbol> {
match self {
Stable => None,
Unstable(s) => Some(s),
}
}
pub fn is_stable(self) -> bool {
matches!(self, Stable)
}
}
// Here we list target features that rustc "understands": they can be used in `#[target_feature]`
// and `#[cfg(target_feature)]`. They also do not trigger any warnings when used with
// `-Ctarget-feature`.
//
// When adding features to the below lists
// check whether they're named already elsewhere in rust
// e.g. in stdarch and whether the given name matches LLVM's
// if it doesn't, to_llvm_feature in llvm_util in rustc_codegen_llvm needs to be adapted.
//
// Also note that all target features listed here must be purely additive: for target_feature 1.1 to
// be sound, we can never allow features like `+soft-float` (on x86) to be controlled on a
// per-function level, since we would then allow safe calls from functions with `+soft-float` to
// functions without that feature!
//
// When adding a new feature, be particularly mindful of features that affect function ABIs. Those
// need to be treated very carefully to avoid introducing unsoundness! This often affects features
// that enable/disable hardfloat support (see https://github.com/rust-lang/rust/issues/116344 for an
// example of this going wrong), but features enabling new SIMD registers are also a concern (see
// https://github.com/rust-lang/rust/issues/116558 for an example of this going wrong).
//
// Stabilizing a target feature requires t-lang approval.
const ARM_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-start
("aclass", Unstable(sym::arm_target_feature)),
("aes", Unstable(sym::arm_target_feature)),
("crc", Unstable(sym::arm_target_feature)),
("d32", Unstable(sym::arm_target_feature)),
("dotprod", Unstable(sym::arm_target_feature)),
("dsp", Unstable(sym::arm_target_feature)),
("fp-armv8", Unstable(sym::arm_target_feature)),
("i8mm", Unstable(sym::arm_target_feature)),
("mclass", Unstable(sym::arm_target_feature)),
("neon", Unstable(sym::arm_target_feature)),
("rclass", Unstable(sym::arm_target_feature)),
("sha2", Unstable(sym::arm_target_feature)),
// This is needed for inline assembly, but shouldn't be stabilized as-is
// since it should be enabled per-function using #[instruction_set], not
// #[target_feature].
("thumb-mode", Unstable(sym::arm_target_feature)),
("thumb2", Unstable(sym::arm_target_feature)),
("trustzone", Unstable(sym::arm_target_feature)),
("v5te", Unstable(sym::arm_target_feature)),
("v6", Unstable(sym::arm_target_feature)),
("v6k", Unstable(sym::arm_target_feature)),
("v6t2", Unstable(sym::arm_target_feature)),
("v7", Unstable(sym::arm_target_feature)),
("v8", Unstable(sym::arm_target_feature)),
("vfp2", Unstable(sym::arm_target_feature)),
("vfp3", Unstable(sym::arm_target_feature)),
("vfp4", Unstable(sym::arm_target_feature)),
("virtualization", Unstable(sym::arm_target_feature)),
// tidy-alphabetical-end
];
const AARCH64_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-start
// FEAT_AES
("aes", Stable),
// FEAT_BF16
("bf16", Stable),
// FEAT_BTI
("bti", Stable),
// FEAT_CRC
("crc", Stable),
// FEAT_DIT
("dit", Stable),
// FEAT_DotProd
("dotprod", Stable),
// FEAT_DPB
("dpb", Stable),
// FEAT_DPB2
("dpb2", Stable),
// FEAT_F32MM
("f32mm", Stable),
// FEAT_F64MM
("f64mm", Stable),
// FEAT_FCMA
("fcma", Stable),
// FEAT_FHM
("fhm", Stable),
// FEAT_FLAGM
("flagm", Stable),
// FEAT_FP16
("fp16", Stable),
// FEAT_FRINTTS
("frintts", Stable),
// FEAT_I8MM
("i8mm", Stable),
// FEAT_JSCVT
("jsconv", Stable),
// FEAT_LOR
("lor", Stable),
// FEAT_LSE
("lse", Stable),
// FEAT_MTE
("mte", Stable),
// FEAT_AdvSimd & FEAT_FP
("neon", Stable),
// FEAT_PAUTH (address authentication)
("paca", Stable),
// FEAT_PAUTH (generic authentication)
("pacg", Stable),
// FEAT_PAN
("pan", Stable),
// FEAT_PMUv3
("pmuv3", Stable),
// FEAT_RAND
("rand", Stable),
// FEAT_RAS
("ras", Stable),
// FEAT_RCPC
("rcpc", Stable),
// FEAT_RCPC2
("rcpc2", Stable),
// FEAT_RDM
("rdm", Stable),
// FEAT_SB
("sb", Stable),
// FEAT_SHA1 & FEAT_SHA256
("sha2", Stable),
// FEAT_SHA512 & FEAT_SHA3
("sha3", Stable),
// FEAT_SM3 & FEAT_SM4
("sm4", Stable),
// FEAT_SPE
("spe", Stable),
// FEAT_SSBS
("ssbs", Stable),
// FEAT_SVE
("sve", Stable),
// FEAT_SVE2
("sve2", Stable),
// FEAT_SVE2_AES
("sve2-aes", Stable),
// FEAT_SVE2_BitPerm
("sve2-bitperm", Stable),
// FEAT_SVE2_SHA3
("sve2-sha3", Stable),
// FEAT_SVE2_SM4
("sve2-sm4", Stable),
// FEAT_TME
("tme", Stable),
("v8.1a", Unstable(sym::aarch64_ver_target_feature)),
("v8.2a", Unstable(sym::aarch64_ver_target_feature)),
("v8.3a", Unstable(sym::aarch64_ver_target_feature)),
("v8.4a", Unstable(sym::aarch64_ver_target_feature)),
("v8.5a", Unstable(sym::aarch64_ver_target_feature)),
("v8.6a", Unstable(sym::aarch64_ver_target_feature)),
("v8.7a", Unstable(sym::aarch64_ver_target_feature)),
// FEAT_VHE
("vh", Stable),
// tidy-alphabetical-end
];
const AARCH64_TIED_FEATURES: &[&[&str]] = &[
&["paca", "pacg"], // Together these represent `pauth` in LLVM
];
const X86_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-start
("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, Stability)] = &[
// tidy-alphabetical-start
("hvx", Unstable(sym::hexagon_target_feature)),
("hvx-length128b", Unstable(sym::hexagon_target_feature)),
// tidy-alphabetical-end
];
const POWERPC_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-start
("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, Stability)] = &[
// tidy-alphabetical-start
("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, Stability)] = &[
// tidy-alphabetical-start
("a", Stable),
("c", Stable),
("d", Unstable(sym::riscv_target_feature)),
("e", Unstable(sym::riscv_target_feature)),
("f", Unstable(sym::riscv_target_feature)),
("fast-unaligned-access", Unstable(sym::riscv_target_feature)),
("m", Stable),
("relax", 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, Stability)] = &[
// tidy-alphabetical-start
("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, Stability)] = &[("alu32", Unstable(sym::bpf_target_feature))];
const CSKY_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-start
("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", 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, Stability)] = &[
// tidy-alphabetical-start
("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
];
/// When rustdoc is running, provide a list of all known features so that all their respective
/// 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, Stability)> {
std::iter::empty()
.chain(ARM_ALLOWED_FEATURES.iter())
.chain(AARCH64_ALLOWED_FEATURES.iter())
.chain(X86_ALLOWED_FEATURES.iter())
.chain(HEXAGON_ALLOWED_FEATURES.iter())
.chain(POWERPC_ALLOWED_FEATURES.iter())
.chain(MIPS_ALLOWED_FEATURES.iter())
.chain(RISCV_ALLOWED_FEATURES.iter())
.chain(WASM_ALLOWED_FEATURES.iter())
.chain(BPF_ALLOWED_FEATURES.iter())
.chain(CSKY_ALLOWED_FEATURES)
.chain(LOONGARCH_ALLOWED_FEATURES)
.cloned()
}
pub fn supported_target_features(sess: &Session) -> &'static [(&'static str, Stability)] {
match &*sess.target.arch {
"arm" => ARM_ALLOWED_FEATURES,
"aarch64" => AARCH64_ALLOWED_FEATURES,
"x86" | "x86_64" => X86_ALLOWED_FEATURES,
"hexagon" => HEXAGON_ALLOWED_FEATURES,
"mips" | "mips32r6" | "mips64" | "mips64r6" => MIPS_ALLOWED_FEATURES,
"powerpc" | "powerpc64" => POWERPC_ALLOWED_FEATURES,
"riscv32" | "riscv64" => RISCV_ALLOWED_FEATURES,
"wasm32" | "wasm64" => WASM_ALLOWED_FEATURES,
"bpf" => BPF_ALLOWED_FEATURES,
"csky" => CSKY_ALLOWED_FEATURES,
"loongarch64" => LOONGARCH_ALLOWED_FEATURES,
_ => &[],
}
}
pub fn tied_target_features(sess: &Session) -> &'static [&'static [&'static str]] {
match &*sess.target.arch {
"aarch64" => AARCH64_TIED_FEATURES,
_ => &[],
}
}
pub fn from_target_feature( pub fn from_target_feature(
tcx: TyCtxt<'_>, tcx: TyCtxt<'_>,
attr: &ast::Attribute, attr: &ast::Attribute,
@ -562,9 +136,13 @@ pub(crate) fn provide(providers: &mut Providers) {
if tcx.sess.opts.actually_rustdoc { if tcx.sess.opts.actually_rustdoc {
// rustdoc needs to be able to document functions that use all the features, so // rustdoc needs to be able to document functions that use all the features, so
// whitelist them all // whitelist them all
all_known_features().map(|(a, b)| (a.to_string(), b.as_feature_name())).collect() rustc_target::target_features::all_known_features()
.map(|(a, b)| (a.to_string(), b.as_feature_name()))
.collect()
} else { } else {
supported_target_features(tcx.sess) tcx.sess
.target
.supported_target_features()
.iter() .iter()
.map(|&(a, b)| (a.to_string(), b.as_feature_name())) .map(|&(a, b)| (a.to_string(), b.as_feature_name()))
.collect() .collect()

10
compiler/rustc_session/src/config.rs
View File

@ -1486,10 +1486,12 @@ macro_rules! ins {
ins!(sym::sanitizer_cfi_generalize_pointers, no_values); ins!(sym::sanitizer_cfi_generalize_pointers, no_values);
ins!(sym::sanitizer_cfi_normalize_integers, no_values); ins!(sym::sanitizer_cfi_normalize_integers, no_values);
// rustc_codegen_ssa has a list of known target features and their ins!(sym::target_feature, empty_values).extend(
// stability, but we should allow any target feature as a new target or rustc_target::target_features::all_known_features()
// rustc version may introduce new target features. .map(|(f, _sb)| f)
ins!(sym::target_feature, || ExpectedValues::Any); .chain(rustc_target::target_features::RUSTC_SPECIFIC_FEATURES.iter().cloned())
.map(Symbol::intern),
);
// sym::target_* // sym::target_*
{ {

1
compiler/rustc_target/src/lib.rs
View File

@ -35,6 +35,7 @@
pub mod asm; pub mod asm;
pub mod json; pub mod json;
pub mod spec; pub mod spec;
pub mod target_features;
#[cfg(test)] #[cfg(test)]
mod tests; mod tests;

429
compiler/rustc_target/src/target_features.rs Normal file
View File

@ -0,0 +1,429 @@
use rustc_span::symbol::sym;
use rustc_span::symbol::Symbol;
/// Features that control behaviour of rustc, rather than the codegen.
pub const RUSTC_SPECIFIC_FEATURES: &[&str] = &["crt-static"];
/// Stability information for target features.
#[derive(Debug, Clone, Copy)]
pub enum Stability {
/// This target feature is stable, it can be used in `#[target_feature]` and
/// `#[cfg(target_feature)]`.
Stable,
/// This target feature is unstable; using it in `#[target_feature]` or `#[cfg(target_feature)]`
/// requires enabling the given nightly feature.
Unstable(Symbol),
}
use Stability::*;
impl Stability {
pub fn as_feature_name(self) -> Option<Symbol> {
match self {
Stable => None,
Unstable(s) => Some(s),
}
}
pub fn is_stable(self) -> bool {
matches!(self, Stable)
}
}
// Here we list target features that rustc "understands": they can be used in `#[target_feature]`
// and `#[cfg(target_feature)]`. They also do not trigger any warnings when used with
// `-Ctarget-feature`.
//
// When adding features to the below lists
// check whether they're named already elsewhere in rust
// e.g. in stdarch and whether the given name matches LLVM's
// if it doesn't, to_llvm_feature in llvm_util in rustc_codegen_llvm needs to be adapted.
//
// Also note that all target features listed here must be purely additive: for target_feature 1.1 to
// be sound, we can never allow features like `+soft-float` (on x86) to be controlled on a
// per-function level, since we would then allow safe calls from functions with `+soft-float` to
// functions without that feature!
//
// When adding a new feature, be particularly mindful of features that affect function ABIs. Those
// need to be treated very carefully to avoid introducing unsoundness! This often affects features
// that enable/disable hardfloat support (see https://github.com/rust-lang/rust/issues/116344 for an
// example of this going wrong), but features enabling new SIMD registers are also a concern (see
// https://github.com/rust-lang/rust/issues/116558 for an example of this going wrong).
//
// Stabilizing a target feature requires t-lang approval.
const ARM_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-start
("aclass", Unstable(sym::arm_target_feature)),
("aes", Unstable(sym::arm_target_feature)),
("crc", Unstable(sym::arm_target_feature)),
("d32", Unstable(sym::arm_target_feature)),
("dotprod", Unstable(sym::arm_target_feature)),
("dsp", Unstable(sym::arm_target_feature)),
("fp-armv8", Unstable(sym::arm_target_feature)),
("i8mm", Unstable(sym::arm_target_feature)),
("mclass", Unstable(sym::arm_target_feature)),
("neon", Unstable(sym::arm_target_feature)),
("rclass", Unstable(sym::arm_target_feature)),
("sha2", Unstable(sym::arm_target_feature)),
// This is needed for inline assembly, but shouldn't be stabilized as-is
// since it should be enabled per-function using #[instruction_set], not
// #[target_feature].
("thumb-mode", Unstable(sym::arm_target_feature)),
("thumb2", Unstable(sym::arm_target_feature)),
("trustzone", Unstable(sym::arm_target_feature)),
("v5te", Unstable(sym::arm_target_feature)),
("v6", Unstable(sym::arm_target_feature)),
("v6k", Unstable(sym::arm_target_feature)),
("v6t2", Unstable(sym::arm_target_feature)),
("v7", Unstable(sym::arm_target_feature)),
("v8", Unstable(sym::arm_target_feature)),
("vfp2", Unstable(sym::arm_target_feature)),
("vfp3", Unstable(sym::arm_target_feature)),
("vfp4", Unstable(sym::arm_target_feature)),
("virtualization", Unstable(sym::arm_target_feature)),
// tidy-alphabetical-end
];
const AARCH64_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-start
// FEAT_AES
("aes", Stable),
// FEAT_BF16
("bf16", Stable),
// FEAT_BTI
("bti", Stable),
// FEAT_CRC
("crc", Stable),
// FEAT_DIT
("dit", Stable),
// FEAT_DotProd
("dotprod", Stable),
// FEAT_DPB
("dpb", Stable),
// FEAT_DPB2
("dpb2", Stable),
// FEAT_F32MM
("f32mm", Stable),
// FEAT_F64MM
("f64mm", Stable),
// FEAT_FCMA
("fcma", Stable),
// FEAT_FHM
("fhm", Stable),
// FEAT_FLAGM
("flagm", Stable),
// FEAT_FP16
("fp16", Stable),
// FEAT_FRINTTS
("frintts", Stable),
// FEAT_I8MM
("i8mm", Stable),
// FEAT_JSCVT
("jsconv", Stable),
// FEAT_LOR
("lor", Stable),
// FEAT_LSE
("lse", Stable),
// FEAT_MTE
("mte", Stable),
// FEAT_AdvSimd & FEAT_FP
("neon", Stable),
// FEAT_PAUTH (address authentication)
("paca", Stable),
// FEAT_PAUTH (generic authentication)
("pacg", Stable),
// FEAT_PAN
("pan", Stable),
// FEAT_PMUv3
("pmuv3", Stable),
// FEAT_RAND
("rand", Stable),
// FEAT_RAS
("ras", Stable),
// FEAT_RCPC
("rcpc", Stable),
// FEAT_RCPC2
("rcpc2", Stable),
// FEAT_RDM
("rdm", Stable),
// FEAT_SB
("sb", Stable),
// FEAT_SHA1 & FEAT_SHA256
("sha2", Stable),
// FEAT_SHA512 & FEAT_SHA3
("sha3", Stable),
// FEAT_SM3 & FEAT_SM4
("sm4", Stable),
// FEAT_SPE
("spe", Stable),
// FEAT_SSBS
("ssbs", Stable),
// FEAT_SVE
("sve", Stable),
// FEAT_SVE2
("sve2", Stable),
// FEAT_SVE2_AES
("sve2-aes", Stable),
// FEAT_SVE2_BitPerm
("sve2-bitperm", Stable),
// FEAT_SVE2_SHA3
("sve2-sha3", Stable),
// FEAT_SVE2_SM4
("sve2-sm4", Stable),
// FEAT_TME
("tme", Stable),
("v8.1a", Unstable(sym::aarch64_ver_target_feature)),
("v8.2a", Unstable(sym::aarch64_ver_target_feature)),
("v8.3a", Unstable(sym::aarch64_ver_target_feature)),
("v8.4a", Unstable(sym::aarch64_ver_target_feature)),
("v8.5a", Unstable(sym::aarch64_ver_target_feature)),
("v8.6a", Unstable(sym::aarch64_ver_target_feature)),
("v8.7a", Unstable(sym::aarch64_ver_target_feature)),
// FEAT_VHE
("vh", Stable),
// tidy-alphabetical-end
];
const AARCH64_TIED_FEATURES: &[&[&str]] = &[
&["paca", "pacg"], // Together these represent `pauth` in LLVM
];
const X86_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-start
("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, Stability)] = &[
// tidy-alphabetical-start
("hvx", Unstable(sym::hexagon_target_feature)),
("hvx-length128b", Unstable(sym::hexagon_target_feature)),
// tidy-alphabetical-end
];
const POWERPC_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-start
("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, Stability)] = &[
// tidy-alphabetical-start
("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, Stability)] = &[
// tidy-alphabetical-start
("a", Stable),
("c", Stable),
("d", Unstable(sym::riscv_target_feature)),
("e", Unstable(sym::riscv_target_feature)),
("f", Unstable(sym::riscv_target_feature)),
("fast-unaligned-access", Unstable(sym::riscv_target_feature)),
("m", Stable),
("relax", 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, Stability)] = &[
// tidy-alphabetical-start
("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, Stability)] = &[("alu32", Unstable(sym::bpf_target_feature))];
const CSKY_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-start
("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", 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, Stability)] = &[
// tidy-alphabetical-start
("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
];
/// When rustdoc is running, provide a list of all known features so that all their respective
/// 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, Stability)> {
std::iter::empty()
.chain(ARM_ALLOWED_FEATURES.iter())
.chain(AARCH64_ALLOWED_FEATURES.iter())
.chain(X86_ALLOWED_FEATURES.iter())
.chain(HEXAGON_ALLOWED_FEATURES.iter())
.chain(POWERPC_ALLOWED_FEATURES.iter())
.chain(MIPS_ALLOWED_FEATURES.iter())
.chain(RISCV_ALLOWED_FEATURES.iter())
.chain(WASM_ALLOWED_FEATURES.iter())
.chain(BPF_ALLOWED_FEATURES.iter())
.chain(CSKY_ALLOWED_FEATURES)
.chain(LOONGARCH_ALLOWED_FEATURES)
.cloned()
}
impl super::spec::Target {
pub fn supported_target_features(&self) -> &'static [(&'static str, Stability)] {
match &*self.arch {
"arm" => ARM_ALLOWED_FEATURES,
"aarch64" => AARCH64_ALLOWED_FEATURES,
"x86" | "x86_64" => X86_ALLOWED_FEATURES,
"hexagon" => HEXAGON_ALLOWED_FEATURES,
"mips" | "mips32r6" | "mips64" | "mips64r6" => MIPS_ALLOWED_FEATURES,
"powerpc" | "powerpc64" => POWERPC_ALLOWED_FEATURES,
"riscv32" | "riscv64" => RISCV_ALLOWED_FEATURES,
"wasm32" | "wasm64" => WASM_ALLOWED_FEATURES,
"bpf" => BPF_ALLOWED_FEATURES,
"csky" => CSKY_ALLOWED_FEATURES,
"loongarch64" => LOONGARCH_ALLOWED_FEATURES,
_ => &[],
}
}
pub fn tied_target_features(&self) -> &'static [&'static [&'static str]] {
match &*self.arch {
"aarch64" => AARCH64_TIED_FEATURES,
_ => &[],
}
}
}

2
library/portable-simd/crates/core_simd/src/swizzle_dyn.rs
View File

@ -55,7 +55,7 @@ pub fn swizzle_dyn(self, idxs: Simd<u8, N>) -> Self {
16 => transize(vqtbl1q_u8, self, idxs), 16 => transize(vqtbl1q_u8, self, idxs),
#[cfg(all(target_feature = "avx2", not(target_feature = "avx512vbmi")))] #[cfg(all(target_feature = "avx2", not(target_feature = "avx512vbmi")))]
32 => transize_raw(avx2_pshufb, self, idxs), 32 => transize_raw(avx2_pshufb, self, idxs),
#[cfg(target_feature = "avx512vl,avx512vbmi")] #[cfg(all(target_feature = "avx512vl", target_feature = "avx512vbmi"))]
32 => transize(x86::_mm256_permutexvar_epi8, self, idxs), 32 => transize(x86::_mm256_permutexvar_epi8, self, idxs),
// Notable absence: avx512bw shuffle // Notable absence: avx512bw shuffle
// If avx512bw is available, odds of avx512vbmi are good // If avx512bw is available, odds of avx512vbmi are good

6
tests/ui/check-cfg/well-known-values.rs
View File

@ -51,7 +51,8 @@
//~^ WARN unexpected `cfg` condition value //~^ WARN unexpected `cfg` condition value
target_family = "_UNEXPECTED_VALUE", target_family = "_UNEXPECTED_VALUE",
//~^ WARN unexpected `cfg` condition value //~^ WARN unexpected `cfg` condition value
target_feature = "_UNEXPECTED_VALUE", // currently *any* values are "expected" target_feature = "_UNEXPECTED_VALUE",
//~^ WARN unexpected `cfg` condition value
target_has_atomic = "_UNEXPECTED_VALUE", target_has_atomic = "_UNEXPECTED_VALUE",
//~^ WARN unexpected `cfg` condition value //~^ WARN unexpected `cfg` condition value
target_has_atomic_equal_alignment = "_UNEXPECTED_VALUE", target_has_atomic_equal_alignment = "_UNEXPECTED_VALUE",
@ -90,6 +91,9 @@ fn target_os_linux_misspell() {}
#[cfg(target_os = "linux")] #[cfg(target_os = "linux")]
fn target_os_linux() {} fn target_os_linux() {}
#[cfg(target_feature = "crt-static")] // pure rustc feature
fn target_feature() {}
#[cfg(target_has_atomic = "8")] #[cfg(target_has_atomic = "8")]
fn target_has_atomic_8() {} fn target_has_atomic_8() {}

34
tests/ui/check-cfg/well-known-values.stderr
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@ -152,7 +152,17 @@ LL | target_family = "_UNEXPECTED_VALUE",
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE` warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
--> $DIR/well-known-values.rs:55:5 --> $DIR/well-known-values.rs:54:5
|
LL | target_feature = "_UNEXPECTED_VALUE",
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: expected values for `target_feature` are: `10e60`, `2e3`, `3e3r1`, `3e3r2`, `3e3r3`, `3e7`, `7e10`, `a`, `aclass`, `adx`, `aes`, `altivec`, `alu32`, `atomics`, `avx`, `avx2`, `avx512bf16`, `avx512bitalg`, `avx512bw`, `avx512cd`, `avx512dq`, `avx512er`, `avx512f`, `avx512ifma`, `avx512pf`, `avx512vbmi`, `avx512vbmi2`, `avx512vl`, `avx512vnni`, `avx512vp2intersect`, `avx512vpopcntdq`, `bf16`, `bmi1`, `bmi2`, `bti`, `bulk-memory`, `c`, `cache`, `cmpxchg16b`, `crc`, `crt-static`, `d`, `d32`, `dit`, `doloop`, `dotprod`, `dpb`, `dpb2`, `dsp`, `dsp1e2`, `dspe60`, `e`, `e1`, `e2`, `edsp`, `elrw`, `ermsb`, `exception-handling`, `f`, `f16c`, `f32mm`, `f64mm`, `fast-unaligned-access`, `fcma`, `fdivdu`, `fhm`, `flagm`, `float1e2`, `float1e3`, `float3e4`, `float7e60`, `floate1`, `fma`, `fp-armv8`, `fp16`, `fp64`, `fpuv2_df`, `fpuv2_sf`, `fpuv3_df`, `fpuv3_hf`, `fpuv3_hi`, `fpuv3_sf`, `frintts`, `fxsr`, `gfni`, `hard-float`, `hard-float-abi`, `hard-tp`, `high-registers`, `hvx`, `hvx-length128b`, `hwdiv`, `i8mm`, `jsconv`, `lasx`, `lbt`, `lor`, `lse`, `lsx`, `lvz`, `lzcnt`, `m`, `mclass`, `movbe`, `mp`, `mp1e2`, `msa`, `mte`, `multivalue`, `mutable-globals`, `neon`, `nontrapping-fptoint`, `nvic`, `paca`, `pacg`, `pan`, `pclmulqdq`, `pmuv3`, `popcnt`, `power10-vector`, `power8-altivec`, `power8-vector`, `power9-altivec`, `power9-vector`, `rand`, `ras`, `rclass`, `rcpc`, `rcpc2`, `rdm`, `rdrand`, `rdseed`, `reference-types`, `relax`, `relaxed-simd`, `rtm`, `sb`, `sha`, `sha2`, `sha3`, `sign-ext`, `simd128`, `sm4`, `spe`, `ssbs`, `sse`, `sse2`, `sse3`, `sse4.1`, `sse4.2`, `sse4a`, `ssse3`, `sve`, `sve2`, `sve2-aes`, `sve2-bitperm`, `sve2-sha3`, `sve2-sm4`, `tbm`, `thumb-mode`, `thumb2`, `tme`, `trust`, `trustzone`, `ual`, `v`, `v5te`, `v6`, `v6k`, `v6t2`, `v7`, `v8`, `v8.1a`, `v8.2a`, `v8.3a`, `v8.4a`, `v8.5a`, `v8.6a`, `v8.7a`, `vaes`, `vdsp2e60f`, `vdspv1`, `vdspv2`, `vfp2`, `vfp3`, `vfp4`, `vh`, `virt`, `virtualization`, `vpclmulqdq`, `vsx`, `xsave`, `xsavec`, `xsaveopt`, `xsaves`, `zba`, `zbb`, `zbc`, `zbkb`, `zbkc`, `zbkx`, `zbs`, `zdinx`, `zfh`, `zfhmin`, `zfinx`, `zhinx`, `zhinxmin`, `zk`, `zkn`, `zknd`, `zkne`, `zknh`, `zkr`, `zks`, `zksed`, `zksh`, `zkt`
= help: to expect this configuration use `--check-cfg=cfg(target_feature, values("_UNEXPECTED_VALUE"))`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
--> $DIR/well-known-values.rs:56:5
| |
LL | target_has_atomic = "_UNEXPECTED_VALUE", LL | target_has_atomic = "_UNEXPECTED_VALUE",
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -162,7 +172,7 @@ LL | target_has_atomic = "_UNEXPECTED_VALUE",
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE` warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
--> $DIR/well-known-values.rs:57:5 --> $DIR/well-known-values.rs:58:5
| |
LL | target_has_atomic_equal_alignment = "_UNEXPECTED_VALUE", LL | target_has_atomic_equal_alignment = "_UNEXPECTED_VALUE",
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -172,7 +182,7 @@ LL | target_has_atomic_equal_alignment = "_UNEXPECTED_VALUE",
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE` warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
--> $DIR/well-known-values.rs:59:5 --> $DIR/well-known-values.rs:60:5
| |
LL | target_has_atomic_load_store = "_UNEXPECTED_VALUE", LL | target_has_atomic_load_store = "_UNEXPECTED_VALUE",
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -182,7 +192,7 @@ LL | target_has_atomic_load_store = "_UNEXPECTED_VALUE",
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE` warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
--> $DIR/well-known-values.rs:61:5 --> $DIR/well-known-values.rs:62:5
| |
LL | target_os = "_UNEXPECTED_VALUE", LL | target_os = "_UNEXPECTED_VALUE",
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -192,7 +202,7 @@ LL | target_os = "_UNEXPECTED_VALUE",
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE` warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
--> $DIR/well-known-values.rs:63:5 --> $DIR/well-known-values.rs:64:5
| |
LL | target_pointer_width = "_UNEXPECTED_VALUE", LL | target_pointer_width = "_UNEXPECTED_VALUE",
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -202,7 +212,7 @@ LL | target_pointer_width = "_UNEXPECTED_VALUE",
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE` warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
--> $DIR/well-known-values.rs:65:5 --> $DIR/well-known-values.rs:66:5
| |
LL | target_thread_local = "_UNEXPECTED_VALUE", LL | target_thread_local = "_UNEXPECTED_VALUE",
| ^^^^^^^^^^^^^^^^^^^---------------------- | ^^^^^^^^^^^^^^^^^^^----------------------
@ -214,7 +224,7 @@ LL | target_thread_local = "_UNEXPECTED_VALUE",
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE` warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
--> $DIR/well-known-values.rs:67:5 --> $DIR/well-known-values.rs:68:5
| |
LL | target_vendor = "_UNEXPECTED_VALUE", LL | target_vendor = "_UNEXPECTED_VALUE",
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -224,7 +234,7 @@ LL | target_vendor = "_UNEXPECTED_VALUE",
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE` warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
--> $DIR/well-known-values.rs:69:5 --> $DIR/well-known-values.rs:70:5
| |
LL | test = "_UNEXPECTED_VALUE", LL | test = "_UNEXPECTED_VALUE",
| ^^^^---------------------- | ^^^^----------------------
@ -236,7 +246,7 @@ LL | test = "_UNEXPECTED_VALUE",
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE` warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
--> $DIR/well-known-values.rs:71:5 --> $DIR/well-known-values.rs:72:5
| |
LL | unix = "_UNEXPECTED_VALUE", LL | unix = "_UNEXPECTED_VALUE",
| ^^^^---------------------- | ^^^^----------------------
@ -248,7 +258,7 @@ LL | unix = "_UNEXPECTED_VALUE",
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE` warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
--> $DIR/well-known-values.rs:73:5 --> $DIR/well-known-values.rs:74:5
| |
LL | windows = "_UNEXPECTED_VALUE", LL | windows = "_UNEXPECTED_VALUE",
| ^^^^^^^---------------------- | ^^^^^^^----------------------
@ -260,7 +270,7 @@ LL | windows = "_UNEXPECTED_VALUE",
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: unexpected `cfg` condition value: `linuz` warning: unexpected `cfg` condition value: `linuz`
--> $DIR/well-known-values.rs:79:7 --> $DIR/well-known-values.rs:80:7
| |
LL | #[cfg(target_os = "linuz")] // testing that we suggest `linux` LL | #[cfg(target_os = "linuz")] // testing that we suggest `linux`
| ^^^^^^^^^^^^------- | ^^^^^^^^^^^^-------
@ -271,5 +281,5 @@ LL | #[cfg(target_os = "linuz")] // testing that we suggest `linux`
= help: to expect this configuration use `--check-cfg=cfg(target_os, values("linuz"))` = help: to expect this configuration use `--check-cfg=cfg(target_os, values("linuz"))`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration = note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
warning: 25 warnings emitted warning: 26 warnings emitted