Auto merge of #102051 - pietroalbini:pa-bootstrap-update, r=Mark-Simulacrum

Update bootstrap compiler to 1.65.0

This PR updates the bootstrap compiler to Rust 1.65.0, removing the various `cfg(bootstrap)`s.

r? `@Mark-Simulacrum`

Author: bors

compiler/rustc_ast/src/ast.rs

@@ -3046,7 +3046,6 @@ mod size_asserts {
     static_assert_size!(Block, 48);
     static_assert_size!(Expr, 104);
     static_assert_size!(ExprKind, 72);
-    #[cfg(not(bootstrap))]
     static_assert_size!(Fn, 184);
     static_assert_size!(ForeignItem, 96);
     static_assert_size!(ForeignItemKind, 24);

compiler/rustc_ast/src/lib.rs

@@ -13,9 +13,7 @@
 #![feature(const_default_impls)]
 #![feature(const_trait_impl)]
 #![feature(if_let_guard)]
-#![cfg_attr(bootstrap, feature(label_break_value))]
 #![feature(let_chains)]
-#![cfg_attr(bootstrap, feature(let_else))]
 #![feature(min_specialization)]
 #![feature(negative_impls)]
 #![feature(slice_internals)]

compiler/rustc_ast_lowering/src/lib.rs

@@ -32,7 +32,6 @@
 
 #![feature(box_patterns)]
 #![feature(let_chains)]
-#![cfg_attr(bootstrap, feature(let_else))]
 #![feature(never_type)]
 #![recursion_limit = "256"]
 #![allow(rustc::potential_query_instability)]

compiler/rustc_ast_passes/src/lib.rs

@@ -9,7 +9,6 @@
 #![feature(if_let_guard)]
 #![feature(iter_is_partitioned)]
 #![feature(let_chains)]
-#![cfg_attr(bootstrap, feature(let_else))]
 #![recursion_limit = "256"]
 
 #[macro_use]

compiler/rustc_attr/src/lib.rs

@@ -5,7 +5,6 @@
 //! to this crate.
 
 #![feature(let_chains)]
-#![cfg_attr(bootstrap, feature(let_else))]
 #![deny(rustc::untranslatable_diagnostic)]
 #![deny(rustc::diagnostic_outside_of_impl)]
 

compiler/rustc_borrowck/src/lib.rs

@@ -3,7 +3,6 @@
 #![allow(rustc::potential_query_instability)]
 #![feature(box_patterns)]
 #![feature(let_chains)]
-#![cfg_attr(bootstrap, feature(let_else))]
 #![feature(min_specialization)]
 #![feature(never_type)]
 #![feature(rustc_attrs)]

compiler/rustc_builtin_macros/src/lib.rs

@@ -9,7 +9,6 @@
 #![feature(if_let_guard)]
 #![feature(is_sorted)]
 #![feature(let_chains)]
-#![cfg_attr(bootstrap, feature(let_else))]
 #![feature(proc_macro_internals)]
 #![feature(proc_macro_quote)]
 #![recursion_limit = "256"]

compiler/rustc_codegen_llvm/src/lib.rs

@@ -7,7 +7,6 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(hash_raw_entry)]
 #![feature(let_chains)]
-#![cfg_attr(bootstrap, feature(let_else))]
 #![feature(extern_types)]
 #![feature(once_cell)]
 #![feature(iter_intersperse)]

compiler/rustc_codegen_ssa/src/lib.rs

@@ -1,7 +1,6 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(box_patterns)]
 #![feature(try_blocks)]
-#![cfg_attr(bootstrap, feature(let_else))]
 #![feature(once_cell)]
 #![feature(associated_type_bounds)]
 #![feature(strict_provenance)]

compiler/rustc_const_eval/src/interpret/operand.rs

@@ -784,7 +784,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
 }
 
 // Some nodes are used a lot. Make sure they don't unintentionally get bigger.
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64", not(bootstrap)))]
+#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
 mod size_asserts {
     use super::*;
     use rustc_data_structures::static_assert_size;