Stabilize LoongArch target features

Author: heiher

compiler/rustc_feature/src/accepted.rs

@@ -143,6 +143,8 @@ declare_features! (
     /// As long as control flow is not implemented in const eval, `&&` and `||` may not be used
     /// at the same time as let bindings.
     (accepted, const_let, "1.33.0", Some(48821)),
+    /// Allows `#[target_feature(...)]` on loongarch64 platforms
+    (accepted, loongarch_target_feature, "CURRENT_RUSTC_VERSION", Some(44839)),
     /// Allows the use of `loop` and `while` in constants.
     (accepted, const_loop, "1.46.0", Some(52000)),
     /// Allows using `&mut` in constant functions.

compiler/rustc_feature/src/unstable.rs

@@ -330,7 +330,6 @@ declare_features! (
     (unstable, ermsb_target_feature, "1.49.0", Some(44839)),
     (unstable, hexagon_target_feature, "1.27.0", Some(44839)),
     (unstable, lahfsahf_target_feature, "1.78.0", Some(44839)),
-    (unstable, loongarch_target_feature, "1.73.0", Some(44839)),
     (unstable, m68k_target_feature, "CURRENT_RUSTC_VERSION", Some(134328)),
     (unstable, mips_target_feature, "1.27.0", Some(44839)),
     (unstable, powerpc_target_feature, "1.27.0", Some(44839)),

compiler/rustc_target/src/target_features.rs

@@ -763,15 +763,15 @@ const CSKY_FEATURES: &[(&str, StabilityUncomputed, 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", STABLE, &["f"]),
+    ("f", STABLE, &[]),
+    ("frecipe", STABLE, &[]),
+    ("lasx", STABLE, &["lsx"]),
+    ("lbt", STABLE, &[]),
+    ("lsx", STABLE, &["d"]),
+    ("lvz", STABLE, &[]),
+    ("relax", STABLE, &[]),
+    ("ual", STABLE, &[]),
     // tidy-alphabetical-end
 ];
 

library/core/src/lib.rs

@@ -202,7 +202,6 @@
 #![feature(arm_target_feature)]
 #![feature(avx512_target_feature)]
 #![feature(hexagon_target_feature)]
-#![feature(loongarch_target_feature)]
 #![feature(mips_target_feature)]
 #![feature(powerpc_target_feature)]
 #![feature(riscv_target_feature)]

src/tools/rust-analyzer/crates/ide-db/src/generated/lints.rs

@@ -7913,20 +7913,6 @@ The tracking issue for this feature is: [#29598]
 
 [#29598]: https://github.com/rust-lang/rust/issues/29598
 
-------------------------
-"##,
-        default_severity: Severity::Allow,
-        warn_since: None,
-        deny_since: None,
-    },
-    Lint {
-        label: "loongarch_target_feature",
-        description: r##"# `loongarch_target_feature`
-
-The tracking issue for this feature is: [#44839]
-
-[#44839]: https://github.com/rust-lang/rust/issues/44839
-
 ------------------------
 "##,
         default_severity: Severity::Allow,

tests/ui/target-feature/gate.rs

@@ -19,7 +19,6 @@
 // gate-test-aarch64_ver_target_feature
 // gate-test-aarch64_unstable_target_feature
 // gate-test-csky_target_feature
-// gate-test-loongarch_target_feature
 // gate-test-lahfsahf_target_feature
 // gate-test-prfchw_target_feature
 // gate-test-s390x_target_feature