Auto merge of #126332 - GuillaumeGomez:rollup-bu1q4pz, r=GuillaumeGomez

Rollup of 9 pull requests

Successful merges:

 - #126039 (Promote `arm64ec-pc-windows-msvc` to tier 2)
 - #126075 (Remove `DebugWithInfcx` machinery)
 - #126228 (Provide correct parent for nested anon const)
 - #126232 (interpret: dyn trait metadata check: equate traits in a proper way)
 - #126242 (Simplify provider api to improve llvm ir)
 - #126294 (coverage: Replace the old span refiner with a single function)
 - #126295 (No uninitalized report in a pre-returned match arm)
 - #126312 (Update `rustc-perf` submodule)
 - #126322 (Follow up to splitting core's PanicInfo and std's PanicInfo)

r? `@ghost`
`@rustbot` modify labels: rollup

src/tools/build-manifest/src/main.rs

@@ -71,6 +71,7 @@ static TARGETS: &[&str] = &[
     "arm-unknown-linux-gnueabihf",
     "arm-unknown-linux-musleabi",
     "arm-unknown-linux-musleabihf",
+    "arm64ec-pc-windows-msvc",
     "armv5te-unknown-linux-gnueabi",
     "armv5te-unknown-linux-musleabi",
     "armv7-linux-androideabi",

src/tools/miri/tests/fail/dyn-call-trait-mismatch.rs

@@ -1,5 +1,5 @@
-// Validation stops this too early.
-//@compile-flags: -Zmiri-disable-validation
+// Validation and SB stop this too early.
+//@compile-flags: -Zmiri-disable-validation -Zmiri-disable-stacked-borrows
 
 trait T1 {
     #[allow(dead_code)]

src/tools/miri/tests/pass/issues/issue-miri-3541-dyn-vtable-trait-normalization.rs

@@ -0,0 +1,40 @@
+#![feature(ptr_metadata)]
+// This test is the result of minimizing the `emplacable` crate to reproduce
+// <https://github.com/rust-lang/miri/issues/3541>.
+
+use std::{ops::FnMut, ptr::Pointee};
+
+pub type EmplacerFn<'a, T> = dyn for<'b> FnMut(<T as Pointee>::Metadata) + 'a;
+
+#[repr(transparent)]
+pub struct Emplacer<'a, T>(EmplacerFn<'a, T>)
+where
+    T: ?Sized;
+
+impl<'a, T> Emplacer<'a, T>
+where
+    T: ?Sized,
+{
+    pub unsafe fn from_fn<'b>(emplacer_fn: &'b mut EmplacerFn<'a, T>) -> &'b mut Self {
+        // This used to trigger:
+        // constructing invalid value: wrong trait in wide pointer vtable: expected
+        // `std::ops::FnMut(<[std::boxed::Box<i32>] as std::ptr::Pointee>::Metadata)`, but encountered
+        // `std::ops::FnMut<(usize,)>`.
+        unsafe { &mut *((emplacer_fn as *mut EmplacerFn<'a, T>) as *mut Self) }
+    }
+}
+
+pub fn box_new_with<T>()
+where
+    T: ?Sized,
+{
+    let emplacer_closure = &mut |_meta| {
+        unreachable!();
+    };
+
+    unsafe { Emplacer::<T>::from_fn(emplacer_closure) };
+}
+
+fn main() {
+    box_new_with::<[Box<i32>]>();
+}

src/tools/rustc-perf

@@ -1 +1 @@
-Subproject commit 72daa50ce2350f5a9b5ae6dc3ad6babccd14ec0a
+Subproject commit c64bb60dd1636922b1ccbb82867bed934a99dbcb