Rollup of 17 pull requests

Cargo.lock

@@ -1491,6 +1491,7 @@ version = "0.15.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bf151400ff0baff5465007dd2f3e717f3fe502074ca563069ce3a6629d07b289"
 dependencies = [
+ "allocator-api2",
  "foldhash",
  "serde",
 ]
@@ -3044,13 +3045,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "rls"
-version = "2.0.0"
-dependencies = [
- "serde_json",
-]
-
 [[package]]
 name = "run_make_support"
 version = "0.2.0"
@@ -3492,6 +3486,7 @@ dependencies = [
  "either",
  "elsa",
  "ena",
+ "hashbrown 0.15.2",
  "indexmap",
  "jobserver",
  "libc",

Cargo.toml

@@ -24,7 +24,6 @@ members = [
   "src/tools/remote-test-server",
   "src/tools/rust-installer",
   "src/tools/rustdoc",
-  "src/tools/rls",
   "src/tools/rustfmt",
   "src/tools/miri",
   "src/tools/miri/cargo-miri",

compiler/rustc_ast/src/format.rs

@@ -266,7 +266,7 @@ pub enum FormatAlignment {
 #[derive(Clone, Encodable, Decodable, Debug, PartialEq, Eq)]
 pub enum FormatCount {
     /// `{:5}` or `{:.5}`
-    Literal(usize),
+    Literal(u16),
     /// `{:.*}`, `{:.5$}`, or `{:a$}`, etc.
     Argument(FormatArgPosition),
 }

compiler/rustc_ast_lowering/src/expr.rs

@@ -2130,26 +2130,24 @@ impl<'hir> LoweringContext<'_, 'hir> {
         self.arena.alloc(self.expr(sp, hir::ExprKind::Tup(&[])))
     }
 
-    pub(super) fn expr_usize(&mut self, sp: Span, value: usize) -> hir::Expr<'hir> {
+    fn expr_uint(&mut self, sp: Span, ty: ast::UintTy, value: u128) -> hir::Expr<'hir> {
         let lit = self.arena.alloc(hir::Lit {
             span: sp,
-            node: ast::LitKind::Int(
-                (value as u128).into(),
-                ast::LitIntType::Unsigned(ast::UintTy::Usize),
-            ),
+            node: ast::LitKind::Int(value.into(), ast::LitIntType::Unsigned(ty)),
         });
         self.expr(sp, hir::ExprKind::Lit(lit))
     }
 
+    pub(super) fn expr_usize(&mut self, sp: Span, value: usize) -> hir::Expr<'hir> {
+        self.expr_uint(sp, ast::UintTy::Usize, value as u128)
+    }
+
     pub(super) fn expr_u32(&mut self, sp: Span, value: u32) -> hir::Expr<'hir> {
-        let lit = self.arena.alloc(hir::Lit {
-            span: sp,
-            node: ast::LitKind::Int(
-                u128::from(value).into(),
-                ast::LitIntType::Unsigned(ast::UintTy::U32),
-            ),
-        });
-        self.expr(sp, hir::ExprKind::Lit(lit))
+        self.expr_uint(sp, ast::UintTy::U32, value as u128)
+    }
+
+    pub(super) fn expr_u16(&mut self, sp: Span, value: u16) -> hir::Expr<'hir> {
+        self.expr_uint(sp, ast::UintTy::U16, value as u128)
     }
 
     pub(super) fn expr_char(&mut self, sp: Span, value: char) -> hir::Expr<'hir> {

compiler/rustc_ast_lowering/src/format.rs

@@ -292,7 +292,7 @@ fn make_count<'hir>(
                 hir::LangItem::FormatCount,
                 sym::Is,
             ));
-            let value = ctx.arena.alloc_from_iter([ctx.expr_usize(sp, *n)]);
+            let value = ctx.arena.alloc_from_iter([ctx.expr_u16(sp, *n)]);
             ctx.expr_call_mut(sp, count_is, value)
         }
         Some(FormatCount::Argument(arg)) => {

compiler/rustc_attr_data_structures/src/lib.rs

@@ -35,33 +35,39 @@ pub trait HashStableContext: rustc_ast::HashStableContext + rustc_abi::HashStabl
 /// like [`Span`]s and empty tuples, are gracefully skipped so they don't clutter the
 /// representation much.
 pub trait PrintAttribute {
-    fn print_something(&self) -> bool;
+    /// Whether or not this will render as something meaningful, or if it's skipped
+    /// (which will force the containing struct to also skip printing a comma
+    /// and the field name).
+    fn should_render(&self) -> bool;
+
     fn print_attribute(&self, p: &mut Printer);
 }
 
 impl<T: PrintAttribute> PrintAttribute for &T {
-    fn print_something(&self) -> bool {
-        T::print_something(self)
+    fn should_render(&self) -> bool {
+        T::should_render(self)
     }
 
     fn print_attribute(&self, p: &mut Printer) {
         T::print_attribute(self, p)
     }
 }
 impl<T: PrintAttribute> PrintAttribute for Option<T> {
-    fn print_something(&self) -> bool {
-        self.as_ref().is_some_and(|x| x.print_something())
+    fn should_render(&self) -> bool {
+        self.as_ref().is_some_and(|x| x.should_render())
     }
+
     fn print_attribute(&self, p: &mut Printer) {
         if let Some(i) = self {
             T::print_attribute(i, p)
         }
     }
 }
 impl<T: PrintAttribute> PrintAttribute for ThinVec<T> {
-    fn print_something(&self) -> bool {
-        self.is_empty() || self[0].print_something()
+    fn should_render(&self) -> bool {
+        self.is_empty() || self[0].should_render()
     }
+
     fn print_attribute(&self, p: &mut Printer) {
         let mut last_printed = false;
         p.word("[");
@@ -70,15 +76,15 @@ impl<T: PrintAttribute> PrintAttribute for ThinVec<T> {
                 p.word_space(",");
             }
             i.print_attribute(p);
-            last_printed = i.print_something();
+            last_printed = i.should_render();
         }
         p.word("]");
     }
 }
 macro_rules! print_skip {
     ($($t: ty),* $(,)?) => {$(
         impl PrintAttribute for $t {
-            fn print_something(&self) -> bool { false }
+            fn should_render(&self) -> bool { false }
             fn print_attribute(&self, _: &mut Printer) { }
         })*
     };
@@ -87,7 +93,7 @@ macro_rules! print_skip {
 macro_rules! print_disp {
     ($($t: ty),* $(,)?) => {$(
         impl PrintAttribute for $t {
-            fn print_something(&self) -> bool { true }
+            fn should_render(&self) -> bool { true }
             fn print_attribute(&self, p: &mut Printer) {
                 p.word(format!("{}", self));
             }
@@ -97,7 +103,7 @@ macro_rules! print_disp {
 macro_rules! print_debug {
     ($($t: ty),* $(,)?) => {$(
         impl PrintAttribute for $t {
-            fn print_something(&self) -> bool { true }
+            fn should_render(&self) -> bool { true }
             fn print_attribute(&self, p: &mut Printer) {
                 p.word(format!("{:?}", self));
             }
@@ -106,37 +112,39 @@ macro_rules! print_debug {
 }
 
 macro_rules! print_tup {
-    (num_print_something $($ts: ident)*) => { 0 $(+ $ts.print_something() as usize)* };
+    (num_should_render $($ts: ident)*) => { 0 $(+ $ts.should_render() as usize)* };
     () => {};
     ($t: ident $($ts: ident)*) => {
         #[allow(non_snake_case, unused)]
         impl<$t: PrintAttribute, $($ts: PrintAttribute),*> PrintAttribute for ($t, $($ts),*) {
-            fn print_something(&self) -> bool {
+            fn should_render(&self) -> bool {
                 let ($t, $($ts),*) = self;
-                print_tup!(num_print_something $t $($ts)*) != 0
+                print_tup!(num_should_render $t $($ts)*) != 0
             }
 
             fn print_attribute(&self, p: &mut Printer) {
                 let ($t, $($ts),*) = self;
-                let parens = print_tup!(num_print_something $t $($ts)*) > 1;
+                let parens = print_tup!(num_should_render $t $($ts)*) > 1;
                 if parens {
-                    p.word("(");
+                    p.popen();
                 }
 
-                let mut printed_anything = $t.print_something();
+                let mut printed_anything = $t.should_render();
 
                 $t.print_attribute(p);
 
                 $(
-                    if printed_anything && $ts.print_something() {
-                        p.word_space(",");
+                    if $ts.should_render() {
+                        if printed_anything {
+                            p.word_space(",");
+                        }
                         printed_anything = true;
                     }
                     $ts.print_attribute(p);
                 )*
 
                 if parens {
-                    p.word(")");
+                    p.pclose();
                 }
             }
         }
@@ -147,8 +155,8 @@ macro_rules! print_tup {
 
 print_tup!(A B C D E F G H);
 print_skip!(Span, ());
-print_disp!(Symbol, u16, bool, NonZero<u32>);
-print_debug!(UintTy, IntTy, Align, AttrStyle, CommentKind, Transparency);
+print_disp!(u16, bool, NonZero<u32>);
+print_debug!(Symbol, UintTy, IntTy, Align, AttrStyle, CommentKind, Transparency);
 
 /// Finds attributes in sequences of attributes by pattern matching.
 ///

compiler/rustc_data_structures/Cargo.toml

@@ -29,6 +29,11 @@ thin-vec = "0.2.12"
 tracing = "0.1"
 # tidy-alphabetical-end
 
+[dependencies.hashbrown]
+version = "0.15.2"
+default-features = false
+features = ["nightly"] # for may_dangle
+
 [dependencies.parking_lot]
 version = "0.12"
 

compiler/rustc_data_structures/src/lib.rs

@@ -24,7 +24,6 @@
 #![feature(dropck_eyepatch)]
 #![feature(extend_one)]
 #![feature(file_buffered)]
-#![feature(hash_raw_entry)]
 #![feature(macro_metavar_expr)]
 #![feature(map_try_insert)]
 #![feature(min_specialization)]

compiler/rustc_data_structures/src/marker.rs

@@ -76,6 +76,7 @@ impl_dyn_send!(
     [crate::sync::RwLock<T> where T: DynSend]
     [crate::tagged_ptr::TaggedRef<'a, P, T> where 'a, P: Sync, T: Send + crate::tagged_ptr::Tag]
     [rustc_arena::TypedArena<T> where T: DynSend]
+    [hashbrown::HashTable<T> where T: DynSend]
     [indexmap::IndexSet<V, S> where V: DynSend, S: DynSend]
     [indexmap::IndexMap<K, V, S> where K: DynSend, V: DynSend, S: DynSend]
     [thin_vec::ThinVec<T> where T: DynSend]
@@ -153,6 +154,7 @@ impl_dyn_sync!(
     [crate::tagged_ptr::TaggedRef<'a, P, T> where 'a, P: Sync, T: Sync + crate::tagged_ptr::Tag]
     [parking_lot::lock_api::Mutex<R, T> where R: DynSync, T: ?Sized + DynSend]
     [parking_lot::lock_api::RwLock<R, T> where R: DynSync, T: ?Sized + DynSend + DynSync]
+    [hashbrown::HashTable<T> where T: DynSync]
     [indexmap::IndexSet<V, S> where V: DynSync, S: DynSync]
     [indexmap::IndexMap<K, V, S> where K: DynSync, V: DynSync, S: DynSync]
     [smallvec::SmallVec<A> where A: smallvec::Array + DynSync]