Auto merge of #117372 - Amanieu:stdarch_update, r=Mark-Simulacrum

Update stdarch submodule

Splits up #27731 into multiple tracking issues.

Closes #27731

library/core/src/lib.rs

@@ -428,10 +428,6 @@ pub mod primitive;
     deprecated_in_future
 )]
 #[allow(rustdoc::bare_urls)]
-// FIXME: This annotation should be moved into rust-lang/stdarch after clashing_extern_declarations is
-// merged. It currently cannot because bootstrap fails as the lint hasn't been defined yet.
-#[allow(clashing_extern_declarations)]
-#[unstable(feature = "stdsimd", issue = "48556")]
 mod core_arch;
 
 #[stable(feature = "simd_arch", since = "1.27.0")]

library/portable-simd/crates/core_simd/src/vendor/arm.rs

@@ -7,9 +7,12 @@ use core::arch::arm::*;
 #[cfg(target_arch = "aarch64")]
 use core::arch::aarch64::*;
 
-#[cfg(any(
-    target_arch = "aarch64",
-    all(target_arch = "arm", target_feature = "v7"),
+#[cfg(all(
+    any(
+        target_arch = "aarch64",
+        all(target_arch = "arm", target_feature = "v7"),
+    ),
+    target_endian = "little"
 ))]
 mod neon {
     use super::*;

library/std/src/lib.rs

@@ -262,6 +262,7 @@
 )]
 #![cfg_attr(any(windows, target_os = "uefi"), feature(round_char_boundary))]
 #![cfg_attr(target_os = "xous", feature(slice_ptr_len))]
+#![cfg_attr(target_family = "wasm", feature(stdarch_wasm_atomic_wait))]
 //
 // Language features:
 // tidy-alphabetical-start
@@ -364,6 +365,11 @@
 #![feature(panic_unwind)]
 // tidy-alphabetical-end
 //
+// Library features (std_detect):
+// tidy-alphabetical-start
+#![feature(stdarch_internal)]
+// tidy-alphabetical-end
+//
 // Only for re-exporting:
 // tidy-alphabetical-start
 #![feature(assert_matches)]
@@ -379,7 +385,6 @@
 #![feature(get_many_mut)]
 #![feature(lazy_cell)]
 #![feature(log_syntax)]
-#![feature(stdsimd)]
 #![feature(test)]
 #![feature(trace_macros)]
 // tidy-alphabetical-end
@@ -618,13 +623,16 @@ pub mod arch {
 
     #[stable(feature = "simd_aarch64", since = "1.60.0")]
     pub use std_detect::is_aarch64_feature_detected;
+    #[unstable(feature = "stdarch_arm_feature_detection", issue = "111190")]
+    pub use std_detect::is_arm_feature_detected;
+    #[unstable(feature = "is_riscv_feature_detected", issue = "111192")]
+    pub use std_detect::is_riscv_feature_detected;
     #[stable(feature = "simd_x86", since = "1.27.0")]
     pub use std_detect::is_x86_feature_detected;
-    #[unstable(feature = "stdsimd", issue = "48556")]
-    pub use std_detect::{
-        is_arm_feature_detected, is_mips64_feature_detected, is_mips_feature_detected,
-        is_powerpc64_feature_detected, is_powerpc_feature_detected, is_riscv_feature_detected,
-    };
+    #[unstable(feature = "stdarch_mips_feature_detection", issue = "111188")]
+    pub use std_detect::{is_mips64_feature_detected, is_mips_feature_detected};
+    #[unstable(feature = "stdarch_powerpc_feature_detection", issue = "111191")]
+    pub use std_detect::{is_powerpc64_feature_detected, is_powerpc_feature_detected};
 }
 
 // This was stabilized in the crate root so we have to keep it there.

library/std/tests/run-time-detect.rs

@@ -1,12 +1,16 @@
 //! These tests just check that the macros are available in std.
 
 #![cfg_attr(
-    any(
-        all(target_arch = "arm", any(target_os = "linux", target_os = "android")),
-        all(target_arch = "powerpc", target_os = "linux"),
-        all(target_arch = "powerpc64", target_os = "linux"),
-    ),
-    feature(stdsimd)
+    all(target_arch = "arm", any(target_os = "linux", target_os = "android")),
+    feature(stdarch_arm_feature_detection)
+)]
+#![cfg_attr(
+    all(target_arch = "powerpc", target_os = "linux"),
+    feature(stdarch_powerpc_feature_detection)
+)]
+#![cfg_attr(
+    all(target_arch = "powerpc64", target_os = "linux"),
+    feature(stdarch_powerpc_feature_detection)
 )]
 
 #[test]

library/stdarch

@@ -1 +1 @@
-Subproject commit f4528dd6e85d97bb802240d7cd048b6e1bf72540
+Subproject commit 5ef6eb42bdcfef6891517a6e4c77a89c18722f18