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Remove redundant implied features

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This commit is contained in:
Caleb Zulawski 2024-08-04 01:02:53 -04:00
parent a25da077cf
commit 5006711744
2 changed files with 6 additions and 36 deletions
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36
compiler/rustc_codegen_llvm/src/llvm_util.rs
View File

@ -239,40 +239,8 @@ pub fn to_llvm_features<'a>(sess: &Session, s: &'a str) -> LLVMFeature<'a> {
}
// In LLVM neon implicitly enables fp, but we manually enable
// neon when a feature only implicitly enables fp
("aarch64", "f32mm") => {
LLVMFeature::with_dependency("f32mm", TargetFeatureFoldStrength::EnableOnly("neon"))
}
("aarch64", "f64mm") => {
LLVMFeature::with_dependency("f64mm", TargetFeatureFoldStrength::EnableOnly("neon"))
}
("aarch64", "fhm") => {
LLVMFeature::with_dependency("fp16fml", TargetFeatureFoldStrength::EnableOnly("neon"))
}
("aarch64", "fp16") => {
LLVMFeature::with_dependency("fullfp16", TargetFeatureFoldStrength::EnableOnly("neon"))
}
("aarch64", "jsconv") => {
LLVMFeature::with_dependency("jsconv", TargetFeatureFoldStrength::EnableOnly("neon"))
}
("aarch64", "sve") => {
LLVMFeature::with_dependency("sve", TargetFeatureFoldStrength::EnableOnly("neon"))
}
("aarch64", "sve2") => {
LLVMFeature::with_dependency("sve2", TargetFeatureFoldStrength::EnableOnly("neon"))
}
("aarch64", "sve2-aes") => {
LLVMFeature::with_dependency("sve2-aes", TargetFeatureFoldStrength::EnableOnly("neon"))
}
("aarch64", "sve2-sm4") => {
LLVMFeature::with_dependency("sve2-sm4", TargetFeatureFoldStrength::EnableOnly("neon"))
}
("aarch64", "sve2-sha3") => {
LLVMFeature::with_dependency("sve2-sha3", TargetFeatureFoldStrength::EnableOnly("neon"))
}
("aarch64", "sve2-bitperm") => LLVMFeature::with_dependency(
"sve2-bitperm",
TargetFeatureFoldStrength::EnableOnly("neon"),
),
("aarch64", "fhm") => LLVMFeature::new("fp16fml"),
("aarch64", "fp16") => LLVMFeature::new("fullfp16"),
// In LLVM 18, `unaligned-scalar-mem` was merged with `unaligned-vector-mem` into a single feature called
// `fast-unaligned-access`. In LLVM 19, it was split back out.
("riscv32" | "riscv64", "unaligned-scalar-mem") if get_version().0 == 18 => {

6
compiler/rustc_target/src/target_features.rs
View File

@ -118,13 +118,15 @@ const AARCH64_ALLOWED_FEATURES: &[(&str, Stability, ImpliedFeatures)] = &[
// FEAT_FLAGM
("flagm", Stable, &[]),
// FEAT_FP16
("fp16", Stable, &[]),
// Rust ties FP and Neon: https://github.com/rust-lang/rust/pull/91608
("fp16", Stable, &["neon"]),
// FEAT_FRINTTS
("frintts", Stable, &[]),
// FEAT_I8MM
("i8mm", Stable, &[]),
// FEAT_JSCVT
("jsconv", Stable, &[]),
// Rust ties FP and Neon: https://github.com/rust-lang/rust/pull/91608
("jsconv", Stable, &["neon"]),
// FEAT_LOR
("lor", Stable, &[]),
// FEAT_LSE