fix tests to work with --feature c

library/compiler-builtins/src/aarch64.rs

@@ -22,6 +22,7 @@
 //!
 //! The original `lse.S` has some truly horrifying code that expects to be compiled multiple times with different constants.
 //! We do something similar, but with macro arguments.
+#![cfg_attr(feature = "c", allow(unused_macros))] // avoid putting the macros into a submodule
 
 // We don't do runtime dispatch so we don't have to worry about the `__aarch64_have_lse_atomics` global ctor.
 

library/compiler-builtins/src/lib.rs

@@ -57,11 +57,7 @@ pub mod mem;
 #[cfg(target_arch = "arm")]
 pub mod arm;
 
-#[cfg(all(
-    target_arch = "aarch64",
-    not(feature = "no-asm"),
-    not(feature = "optimized-c")
-))]
+#[cfg(all(target_arch = "aarch64", not(feature = "no-asm"),))]
 pub mod aarch64;
 
 #[cfg(all(