tests/ui/asm: Remove uses of rustc_attrs, lang_items, and decl_macro features by using minicore

Author: taiki-e

tests/auxiliary/minicore.rs

@@ -14,7 +14,7 @@
 //! <https://github.com/rust-lang/rust/blob/c0b5cc9003f6464c11ae1c0662c6a7e06f6f5cab/compiler/rustc_codegen_cranelift/example/mini_core.rs>.
 // ignore-tidy-linelength
 
-#![feature(no_core, lang_items, rustc_attrs, decl_macro)]
+#![feature(no_core, lang_items, rustc_attrs, decl_macro, naked_functions)]
 #![allow(unused, improper_ctypes_definitions, internal_features)]
 #![feature(asm_experimental_arch)]
 #![no_std]
@@ -80,3 +80,11 @@ pub struct UnsafeCell<T: ?Sized> {
 pub macro asm("assembly template", $(operands,)* $(options($(option),*))?) {
     /* compiler built-in */
 }
+#[rustc_builtin_macro]
+pub macro naked_asm("assembly template", $(operands,)* $(options($(option),*))?) {
+    /* compiler built-in */
+}
+#[rustc_builtin_macro]
+pub macro global_asm("assembly template", $(operands,)* $(options($(option),*))?) {
+    /* compiler built-in */
+}

tests/ui/asm/aarch64/aarch64-sve.rs

@@ -3,22 +3,10 @@
 //@ needs-asm-support
 
 #![crate_type = "rlib"]
-#![feature(no_core, rustc_attrs, lang_items)]
-#![no_core]
 
 // AArch64 test corresponding to arm64ec-sve.rs.
 
-#[lang = "sized"]
-trait Sized {}
-#[lang = "copy"]
-trait Copy {}
-
-impl Copy for f64 {}
-
-#[rustc_builtin_macro]
-macro_rules! asm {
-    () => {};
-}
+use std::arch::asm;
 
 fn f(x: f64) {
     unsafe {