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Add implied target features to target_feature attribute

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Caleb Zulawski 2024-07-26 00:05:20 -04:00
parent 6696447f78
commit 74653b61a6
5 changed files with 113 additions and 31 deletions
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58
compiler/rustc_target/src/target_features.rs
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@ -339,8 +339,6 @@ const WASM_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-end
];
const WASM_IMPLICIT_FEATURES: &[(&str, &str)] = &[("relaxed-simd", "simd128")];
const BPF_ALLOWED_FEATURES: &[(&str, Stability)] = &[("alu32", Unstable(sym::bpf_target_feature))];
const CSKY_ALLOWED_FEATURES: &[(&str, Stability)] = &[
@ -411,6 +409,54 @@ const IBMZ_ALLOWED_FEATURES: &[(&str, Stability)] = &[
// tidy-alphabetical-end
];
const X86_IMPLIED_FEATURES: &[(&str, &[&str])] = &[
// tidy-alphabetical-start
("aes", &["sse2"]),
("avx", &["sse4.2"]),
("avx2", &["avx"]),
("f16c", &["avx"]),
("fma", &["avx"]),
("pclmulqdq", &["sse2"]),
("sha", &["sse2"]),
("sse2", &["sse"]),
("sse3", &["sse2"]),
("sse4.1", &["ssse3"]),
("sse4.2", &["sse4.1"]),
("ssse3", &["sse3"]),
// tidy-alphabetical-end
];
const AARCH64_IMPLIED_FEATURES: &[(&str, &[&str])] = &[
// tidy-alphabetical-start
("aes", &["neon"]),
("f32mm", &["sve"]),
("f64mm", &["sve"]),
("fcma", &["neon"]),
("fhm", &["fp16"]),
("fp16", &["neon"]),
("jsconv", &["neon"]),
("rcpc2", &["rcpc"]),
("sha2", &["neon"]),
("sha3", &["sha2"]),
("sm4", &["neon"]),
("sve", &["fp16"]),
("sve2", &["sve"]),
("sve2-aes", &["sve2", "aes"]),
("sve2-bitperm", &["sve2"]),
("sve2-sha3", &["sve2", "sha3"]),
("sve2-sm4", &["sve2", "sm4"]),
// tidy-alphabetical-end
];
const RISCV_IMPLIED_FEATURES: &[(&str, &[&str])] = &[
// tidy-alphabetical-start
("zb", &["zba", "zbc", "zbs"]),
("zk", &["zkn", "zkr", "zks", "zkt", "zbkb", "zbkc", "zkbx"]),
("zkn", &["zknd", "zkne", "zknh", "zbkb", "zbkc", "zkbx"]),
("zks", &["zksed", "zksh", "zbkb", "zbkc", "zkbx"]),
// tidy-alphabetical-end
];
/// When rustdoc is running, provide a list of all known features so that all their respective
/// primitives may be documented.
///
@ -458,11 +504,11 @@ impl super::spec::Target {
}
}
/// Returns a list of target features. Each items first target feature
/// implicitly enables the second one.
pub fn implicit_target_features(&self) -> &'static [(&'static str, &'static str)] {
pub fn implied_target_features(&self) -> &'static [(&'static str, &'static [&'static str])] {
match &*self.arch {
"wasm32" | "wasm64" => WASM_IMPLICIT_FEATURES,
"aarch4" => AARCH64_IMPLIED_FEATURES,
"riscv32" | "riscv64" => RISCV_IMPLIED_FEATURES,
"x86" | "x86_64" => X86_IMPLIED_FEATURES,
_ => &[],
}
}