Merge branch 'rust-lang:master' into master

crates/hir-ty/src/consteval/tests/intrinsics.rs

@@ -163,6 +163,24 @@ fn transmute() {
     );
 }
 
+#[test]
+fn read_via_copy() {
+    check_number(
+        r#"
+        extern "rust-intrinsic" {
+            pub fn read_via_copy<T>(e: *const T) -> T;
+            pub fn volatile_load<T>(e: *const T) -> T;
+        }
+
+        const GOAL: i32 = {
+            let x = 2;
+            read_via_copy(&x) + volatile_load(&x)
+        };
+        "#,
+        4,
+    );
+}
+
 #[test]
 fn const_eval_select() {
     check_number(

crates/hir-ty/src/mir/eval/shim.rs

@@ -888,6 +888,13 @@ fn exec_intrinsic(
                 }
                 not_supported!("FnOnce was not available for executing const_eval_select");
             }
+            "read_via_copy" | "volatile_load" => {
+                let [arg] = args else {
+                    return Err(MirEvalError::TypeError("read_via_copy args are not provided"));
+                };
+                let addr = Address::from_bytes(arg.interval.get(self)?)?;
+                destination.write_from_interval(self, Interval { addr, size: destination.size })
+            }
             _ => not_supported!("unknown intrinsic {name}"),
         }
     }

docs/user/manual.adoc

@@ -64,22 +64,8 @@ You can install the latest release of the plugin from
 https://marketplace.visualstudio.com/items?itemName=rust-lang.rust-analyzer[the marketplace].
 
 Note that the plugin may cause conflicts with the
-https://marketplace.visualstudio.com/items?itemName=rust-lang.rust[official Rust plugin].
-It is recommended to disable the Rust plugin when using the rust-analyzer extension.
-
-By default, the plugin will prompt you to download the matching version of the server as well:
-
-image::https://user-images.githubusercontent.com/9021944/75067008-17502500-54ba-11ea-835a-f92aac50e866.png[]
-
-[NOTE]
-====
-To disable this notification put the following to `settings.json`
-
-[source,json]
-----
-{ "rust-analyzer.updates.askBeforeDownload": false }
-----
-====
+https://marketplace.visualstudio.com/items?itemName=rust-lang.rust[previous official Rust plugin].
+The latter is no longer maintained and should be uninstalled.
 
 The server binary is stored in the extension install directory, which starts with `rust-lang.rust-analyzer-` and is located under: