Auto merge of #94290 - Mark-Simulacrum:bump-bootstrap, r=pietroalbini

Bump bootstrap to 1.60

This bumps the bootstrap compiler to 1.60 and cleans up cfgs and Span's rustc_pass_by_value (enabled by the bootstrap bump).

compiler/rustc_middle/src/lib.rs

@@ -57,7 +57,7 @@
 #![feature(unwrap_infallible)]
 #![feature(decl_macro)]
 #![recursion_limit = "512"]
-#![cfg_attr(not(bootstrap), allow(rustc::potential_query_instability))]
+#![allow(rustc::potential_query_instability)]
 
 #[macro_use]
 extern crate bitflags;

compiler/rustc_middle/src/mir/visit.rs

@@ -162,6 +162,9 @@ macro_rules! make_mir_visitor {
                 self.super_constant(constant, location);
             }
 
+            // The macro results in a false positive of sorts, where &mut Span
+            // is fine, but &Span is not; just allow the lint.
+            #[allow(rustc::pass_by_value)]
             fn visit_span(&mut self,
                           span: & $($mutability)? Span) {
                 self.super_span(span);
@@ -869,6 +872,9 @@ macro_rules! make_mir_visitor {
                 }
             }
 
+            // The macro results in a false positive of sorts, where &mut Span
+            // is fine, but &Span is not; just allow the lint.
+            #[allow(rustc::pass_by_value)]
             fn super_span(&mut self, _span: & $($mutability)? Span) {
             }
 

compiler/rustc_middle/src/ty/consts.rs

@@ -21,7 +21,7 @@ pub use valtree::*;
 
 /// Use this rather than `ConstS`, whenever possible.
 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, HashStable)]
-#[cfg_attr(not(bootstrap), rustc_pass_by_value)]
+#[rustc_pass_by_value]
 pub struct Const<'tcx>(pub Interned<'tcx, ConstS<'tcx>>);
 
 impl<'tcx> fmt::Debug for Const<'tcx> {

compiler/rustc_middle/src/ty/context.rs

@@ -970,7 +970,7 @@ pub struct FreeRegionInfo {
 /// [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/ty.html
 #[derive(Copy, Clone)]
 #[rustc_diagnostic_item = "TyCtxt"]
-#[cfg_attr(not(bootstrap), rustc_pass_by_value)]
+#[rustc_pass_by_value]
 pub struct TyCtxt<'tcx> {
     gcx: &'tcx GlobalCtxt<'tcx>,
 }

compiler/rustc_middle/src/ty/mod.rs

@@ -433,7 +433,7 @@ static_assert_size!(TyS<'_>, 40);
 /// Use this rather than `TyS`, whenever possible.
 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
 #[rustc_diagnostic_item = "Ty"]
-#[cfg_attr(not(bootstrap), rustc_pass_by_value)]
+#[rustc_pass_by_value]
 pub struct Ty<'tcx>(Interned<'tcx, TyS<'tcx>>);
 
 // Statics only used for internal testing.
@@ -486,7 +486,7 @@ static_assert_size!(PredicateS<'_>, 56);
 
 /// Use this rather than `PredicateS`, whenever possible.
 #[derive(Clone, Copy, PartialEq, Eq, Hash)]
-#[cfg_attr(not(bootstrap), rustc_pass_by_value)]
+#[rustc_pass_by_value]
 pub struct Predicate<'tcx>(Interned<'tcx, PredicateS<'tcx>>);
 
 impl<'tcx> Predicate<'tcx> {

compiler/rustc_middle/src/ty/sty.rs

@@ -1396,7 +1396,7 @@ impl ParamConst {
 
 /// Use this rather than `TyKind`, whenever possible.
 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, HashStable)]
-#[cfg_attr(not(bootstrap), rustc_pass_by_value)]
+#[rustc_pass_by_value]
 pub struct Region<'tcx>(pub Interned<'tcx, RegionKind>);
 
 impl<'tcx> Deref for Region<'tcx> {