Rollup merge of #103168 - Amanieu:stable_asm_sym, r=davidtwco

Stabilize asm_sym

Tracking issue #93333

Reference PR: rust-lang/reference#1270

Author: Dylan-DPC

compiler/rustc_ast_lowering/src/asm.rs

@@ -192,16 +192,6 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                         }
                     }
                     InlineAsmOperand::Sym { ref sym } => {
-                        if !self.tcx.features().asm_sym {
-                            feature_err(
-                                &sess.parse_sess,
-                                sym::asm_sym,
-                                *op_sp,
-                                "sym operands for inline assembly are unstable",
-                            )
-                            .emit();
-                        }
-
                         let static_def_id = self
                             .resolver
                             .get_partial_res(sym.id)

compiler/rustc_codegen_gcc/tests/run/asm.rs

@@ -3,11 +3,12 @@
 // Run-time:
 //   status: 0
 
-#![feature(asm_const, asm_sym)]
+#![feature(asm_const)]
 
 use std::arch::{asm, global_asm};
 
-global_asm!("
+global_asm!(
+    "
     .global add_asm
 add_asm:
      mov rax, rdi
@@ -132,7 +133,9 @@ fn main() {
     assert_eq!(x, 43);
 
     // check sym fn
-    extern "C" fn foo() -> u64 { 42 }
+    extern "C" fn foo() -> u64 {
+        42
+    }
     let x: u64;
     unsafe {
         asm!("call {}", sym foo, lateout("rax") x);

compiler/rustc_feature/src/accepted.rs

@@ -53,6 +53,8 @@ declare_features! (
     (accepted, abi_sysv64, "1.24.0", Some(36167), None),
     /// Allows using ADX intrinsics from `core::arch::{x86, x86_64}`.
     (accepted, adx_target_feature, "1.61.0", Some(44839), None),
+    /// Allows using `sym` operands in inline assembly.
+    (accepted, asm_sym, "CURRENT_RUSTC_VERSION", Some(93333), None),
     /// Allows the definition of associated constants in `trait` or `impl` blocks.
     (accepted, associated_consts, "1.20.0", Some(29646), None),
     /// Allows using associated `type`s in `trait`s.

compiler/rustc_feature/src/active.rs

@@ -300,8 +300,6 @@ declare_features! (
     (active, asm_const, "1.58.0", Some(93332), None),
     /// Enables experimental inline assembly support for additional architectures.
     (active, asm_experimental_arch, "1.58.0", Some(93335), None),
-    /// Allows using `sym` operands in inline assembly.
-    (active, asm_sym, "1.58.0", Some(93333), None),
     /// Allows the `may_unwind` option in inline assembly.
     (active, asm_unwind, "1.58.0", Some(93334), None),
     /// Allows users to enforce equality of associated constants `TraitImpl<AssocConst=3>`.

src/doc/unstable-book/src/language-features/asm-sym.md

@@ -2,7 +2,7 @@
 // compile-flags: --target aarch64-unknown-linux-gnu
 // needs-llvm-components: aarch64
 
-#![feature(no_core, lang_items, rustc_attrs, repr_simd, asm_sym)]
+#![feature(no_core, lang_items, rustc_attrs, repr_simd)]
 #![crate_type = "rlib"]
 #![no_core]
 #![allow(asm_sub_register, non_camel_case_types)]

src/test/assembly/asm/aarch64-types.rs

@@ -3,7 +3,7 @@
 // compile-flags: -C target-feature=+neon
 // needs-llvm-components: arm
 
-#![feature(no_core, lang_items, rustc_attrs, repr_simd, asm_sym)]
+#![feature(no_core, lang_items, rustc_attrs, repr_simd)]
 #![crate_type = "rlib"]
 #![no_core]
 #![allow(asm_sub_register, non_camel_case_types)]

src/test/assembly/asm/arm-types.rs

@@ -2,7 +2,7 @@
 // compile-flags: --target avr-unknown-gnu-atmega328
 // needs-llvm-components: avr
 
-#![feature(no_core, lang_items, rustc_attrs, asm_sym, asm_experimental_arch)]
+#![feature(no_core, lang_items, rustc_attrs, asm_experimental_arch)]
 #![crate_type = "rlib"]
 #![no_core]
 #![allow(non_camel_case_types)]

src/test/assembly/asm/avr-types.rs

@@ -2,7 +2,7 @@
 // compile-flags: --target bpfel-unknown-none -C target_feature=+alu32
 // needs-llvm-components: bpf
 
-#![feature(no_core, lang_items, rustc_attrs, repr_simd, asm_sym, asm_experimental_arch)]
+#![feature(no_core, lang_items, rustc_attrs, repr_simd, asm_experimental_arch)]
 #![crate_type = "rlib"]
 #![no_core]
 #![allow(asm_sub_register, non_camel_case_types)]

src/test/assembly/asm/bpf-types.rs

@@ -4,7 +4,7 @@
 // compile-flags: -C llvm-args=--x86-asm-syntax=intel
 // compile-flags: -C symbol-mangling-version=v0
 
-#![feature(asm_const, asm_sym)]
+#![feature(asm_const)]
 #![crate_type = "rlib"]
 
 use std::arch::global_asm;
@@ -28,4 +28,6 @@ global_asm!("lea rax, [rip + {}]", sym MY_STATIC);
 // CHECK: call _RNvCsiubXh4Yz005_10global_asm6foobar
 global_asm!("call {}", sym foobar);
 // CHECK: _RNvCsiubXh4Yz005_10global_asm6foobar:
-fn foobar() { loop {} }
+fn foobar() {
+    loop {}
+}