stabilize optimize attribute

compiler/rustc_feature/src/accepted.rs

@@ -340,6 +340,8 @@ declare_features! (
     (accepted, non_modrs_mods, "1.30.0", Some(44660)),
     /// Allows using multiple nested field accesses in offset_of!
     (accepted, offset_of_nested, "1.82.0", Some(120140)),
+    /// Allows using `#[optimize(X)]`.
+    (accepted, optimize_attribute, "CURRENT_RUSTC_VERSION", Some(54882)),
     /// Allows the use of or-patterns (e.g., `0 | 1`).
     (accepted, or_patterns, "1.53.0", Some(54883)),
     /// Allows using `+bundle,+whole-archive` link modifiers with native libs.

compiler/rustc_feature/src/builtin_attrs.rs

@@ -373,7 +373,7 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
     gated!(thread_local, "`#[thread_local]` is an experimental feature, and does not currently handle destructors"),
     gated!(no_core, experimental!(no_core)),
     // RFC 2412
-    gated!(optimize, optimize_attribute, experimental!(optimize)),
+    ungated!(optimize),
 
     gated!(ffi_pure, experimental!(ffi_pure)),
     gated!(ffi_const, experimental!(ffi_const)),

compiler/rustc_feature/src/unstable.rs

@@ -678,8 +678,6 @@ declare_features! (
     (unstable, offset_of_enum, "1.75.0", Some(120141)),
     /// Allows using fields with slice type in offset_of!
     (unstable, offset_of_slice, "1.81.0", Some(126151)),
-    /// Allows using `#[optimize(X)]`.
-    (unstable, optimize_attribute, "1.34.0", Some(54882)),
     /// Allows specifying nop padding on functions for dynamic patching.
     (unstable, patchable_function_entry, "1.81.0", Some(123115)),
     /// Experimental features that make `Pin` more ergonomic.

library/alloc/src/lib.rs

@@ -190,7 +190,6 @@
 #![feature(multiple_supertrait_upcastable)]
 #![feature(negative_impls)]
 #![feature(never_type)]
-#![feature(optimize_attribute)]
 #![feature(rustc_attrs)]
 #![feature(slice_internals)]
 #![feature(staged_api)]

library/alloctests/lib.rs

@@ -61,7 +61,6 @@
 #![feature(dropck_eyepatch)]
 #![feature(min_specialization)]
 #![feature(never_type)]
-#![feature(optimize_attribute)]
 #![feature(prelude_import)]
 #![feature(rustc_attrs)]
 #![feature(staged_api)]

library/core/src/lib.rs

@@ -156,7 +156,6 @@
 #![feature(negative_impls)]
 #![feature(never_type)]
 #![feature(no_core)]
-#![feature(optimize_attribute)]
 #![feature(pattern_types)]
 #![feature(pin_macro_internals)]
 #![feature(prelude_import)]

library/std/src/lib.rs

@@ -301,7 +301,6 @@
 #![feature(needs_panic_runtime)]
 #![feature(negative_impls)]
 #![feature(never_type)]
-#![feature(optimize_attribute)]
 #![feature(prelude_import)]
 #![feature(rustc_attrs)]
 #![feature(rustdoc_internals)]

tests/codegen-llvm/issues/issue-136329-optnone-noinline.rs

@@ -2,8 +2,6 @@
 
 //@ compile-flags: -Copt-level=3
 
-#![feature(optimize_attribute)]
-
 #[optimize(none)]
 pub fn foo() {
     let _x = 123;

tests/codegen-llvm/optimize-attr-1.rs

@@ -3,7 +3,6 @@
 //@[SIZE-OPT] compile-flags: -Copt-level=s -Ccodegen-units=1
 //@[SPEED-OPT] compile-flags: -Copt-level=3 -Ccodegen-units=1
 
-#![feature(optimize_attribute)]
 #![crate_type = "rlib"]
 
 // CHECK-LABEL: define{{.*}}i32 @nothing

tests/mir-opt/optimize_none.rs

@@ -2,8 +2,6 @@
 //@[NO-OPT] compile-flags: -Copt-level=0
 //@[SPEED-OPT] compile-flags: -Copt-level=3 -Coverflow-checks=y
 
-#![feature(optimize_attribute)]
-
 #[optimize(none)]
 pub fn add_noopt() -> i32 {
     // CHECK-LABEL: fn add_noopt(

tests/rustdoc-json/attrs/optimize.rs

@@ -1,5 +1,3 @@
-#![feature(optimize_attribute)]
-
 //@ is "$.index[?(@.name=='speed')].attrs" '[{"other": "#[attr = Optimize(Speed)]"}]'
 #[optimize(speed)]
 pub fn speed() {}

tests/ui/attributes/malformed-attrs.rs

@@ -5,7 +5,6 @@
 #![feature(allow_internal_unstable)]
 // FIXME(#82232, #143834): temporarily renamed to mitigate `#[align]` nameres ambiguity
 #![feature(fn_align)]
-#![feature(optimize_attribute)]
 #![feature(dropck_eyepatch)]
 #![feature(export_stable)]
 #![allow(incomplete_features)]