Auto merge of #90042 - pietroalbini:1.56-master, r=Mark-Simulacrum

Bump bootstrap compiler to 1.57

Fixes https://github.com/rust-lang/rust/issues/90152

r? `@Mark-Simulacrum`

compiler/rustc_borrowck/src/lib.rs

@@ -2,7 +2,6 @@
 
 #![feature(bool_to_option)]
 #![feature(box_patterns)]
-#![cfg_attr(bootstrap, feature(const_panic))]
 #![feature(crate_visibility_modifier)]
 #![feature(format_args_capture)]
 #![feature(in_band_lifetimes)]

compiler/rustc_data_structures/src/lib.rs

@@ -11,7 +11,6 @@
 #![feature(associated_type_bounds)]
 #![feature(auto_traits)]
 #![feature(bool_to_option)]
-#![cfg_attr(bootstrap, feature(const_panic))]
 #![feature(control_flow_enum)]
 #![feature(core_intrinsics)]
 #![feature(extend_one)]

compiler/rustc_index/src/vec.rs

@@ -124,10 +124,7 @@ macro_rules! newtype_index {
 
             #[inline]
             $v const fn from_usize(value: usize) -> Self {
-                #[cfg(not(bootstrap))]
                 assert!(value <= ($max as usize));
-                #[cfg(bootstrap)]
-                [()][(value > ($max as usize)) as usize];
                 unsafe {
                     Self::from_u32_unchecked(value as u32)
                 }
@@ -135,10 +132,7 @@ macro_rules! newtype_index {
 
             #[inline]
             $v const fn from_u32(value: u32) -> Self {
-                #[cfg(not(bootstrap))]
                 assert!(value <= $max);
-                #[cfg(bootstrap)]
-                [()][(value > $max) as usize];
                 unsafe {
                     Self::from_u32_unchecked(value)
                 }

compiler/rustc_mir_dataflow/src/framework/cursor.rs

@@ -64,6 +64,13 @@ where
         }
     }
 
+    /// Allows inspection of unreachable basic blocks even with `debug_assertions` enabled.
+    #[cfg(test)]
+    pub(crate) fn allow_unreachable(&mut self) {
+        #[cfg(debug_assertions)]
+        self.reachable_blocks.insert_all()
+    }
+
     /// Returns the underlying `Results`.
     pub fn results(&self) -> &Results<'tcx, A> {
         &self.results.borrow()

compiler/rustc_mir_dataflow/src/framework/tests.rs

@@ -268,6 +268,8 @@ fn test_cursor<D: Direction>(analysis: MockAnalysis<'tcx, D>) {
     let mut cursor =
         Results { entry_sets: analysis.mock_entry_sets(), analysis }.into_results_cursor(body);
 
+    cursor.allow_unreachable();
+
     let every_target = || {
         body.basic_blocks()
             .iter_enumerated()

compiler/rustc_mir_dataflow/src/lib.rs

@@ -2,7 +2,6 @@
 #![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(box_syntax)]
-#![cfg_attr(bootstrap, feature(const_panic))]
 #![feature(exact_size_is_empty)]
 #![feature(in_band_lifetimes)]
 #![feature(iter_zip)]

compiler/rustc_mir_transform/src/lib.rs

@@ -1,7 +1,6 @@
 #![feature(box_patterns)]
 #![feature(box_syntax)]
 #![feature(crate_visibility_modifier)]
-#![cfg_attr(bootstrap, feature(const_panic))]
 #![feature(in_band_lifetimes)]
 #![feature(iter_zip)]
 #![feature(let_else)]