Merge pull request #4534 from rust-lang/rustup-2025-08-21

Automatic Rustup

Author: RalfJung

cargo-miri/Cargo.lock

@@ -18,7 +18,7 @@ directories = "6"
 rustc_version = "0.4"
 serde_json = "1.0.40"
 cargo_metadata = "0.21"
-rustc-build-sysroot = "0.5.8"
+rustc-build-sysroot = "0.5.10"
 
 # Enable some feature flags that dev-dependencies need but dependencies
 # do not.  This makes `./miri install` after `./miri build` faster.

cargo-miri/Cargo.toml

@@ -1 +1 @@
-f605b57042ffeb320d7ae44490113a827139b766
+125ff8a788c5d6a66917f499abdc00051afe6886

rust-version

@@ -0,0 +1,23 @@
+#![feature(core_intrinsics)]
+
+// Test that these intrinsics work. Their behavior should be a no-op.
+
+fn main() {
+    static X: [u8; 8] = [0; 8];
+
+    ::std::intrinsics::prefetch_read_data::<_, 1>(::std::ptr::null::<u8>());
+    ::std::intrinsics::prefetch_read_data::<_, 2>(::std::ptr::dangling::<u8>());
+    ::std::intrinsics::prefetch_read_data::<_, 3>(X.as_ptr());
+
+    ::std::intrinsics::prefetch_write_data::<_, 1>(::std::ptr::null::<u8>());
+    ::std::intrinsics::prefetch_write_data::<_, 2>(::std::ptr::dangling::<u8>());
+    ::std::intrinsics::prefetch_write_data::<_, 3>(X.as_ptr());
+
+    ::std::intrinsics::prefetch_read_instruction::<_, 1>(::std::ptr::null::<u8>());
+    ::std::intrinsics::prefetch_read_instruction::<_, 2>(::std::ptr::dangling::<u8>());
+    ::std::intrinsics::prefetch_read_instruction::<_, 3>(X.as_ptr());
+
+    ::std::intrinsics::prefetch_write_instruction::<_, 1>(::std::ptr::null::<u8>());
+    ::std::intrinsics::prefetch_write_instruction::<_, 2>(::std::ptr::dangling::<u8>());
+    ::std::intrinsics::prefetch_write_instruction::<_, 3>(X.as_ptr());
+}