Auto merge of #92099 - matthiaskrgr:rollup-4gwv67m, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #91141 (Revert "Temporarily rename int_roundings functions to avoid conflicts")
 - #91984 (Remove `in_band_lifetimes` from `rustc_middle`)
 - #92028 (Sync portable-simd to fix libcore build for AVX-512 enabled targets)
 - #92042 (Enable `#[thread_local]` for all windows-msvc targets)
 - #92071 (Update example code for Vec::splice to change the length)
 - #92077 (rustdoc: Remove unused `collapsed` field)
 - #92081 (rustdoc: Remove unnecessary `need_backline` function)

Failed merges:

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

src/librustdoc/clean/types.rs

@@ -122,12 +122,11 @@ crate struct Crate {
     crate primitives: ThinVec<(DefId, PrimitiveType)>,
     /// Only here so that they can be filtered through the rustdoc passes.
     crate external_traits: Rc<RefCell<FxHashMap<DefId, TraitWithExtraInfo>>>,
-    crate collapsed: bool,
 }
 
 // `Crate` is frequently moved by-value. Make sure it doesn't unintentionally get bigger.
 #[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
-rustc_data_structures::static_assert_size!(Crate, 80);
+rustc_data_structures::static_assert_size!(Crate, 72);
 
 impl Crate {
     crate fn name(&self, tcx: TyCtxt<'_>) -> Symbol {
@@ -1030,12 +1029,6 @@ impl Attributes {
     ) -> Attributes {
         let mut doc_strings: Vec<DocFragment> = vec![];
 
-        fn update_need_backline(doc_strings: &mut Vec<DocFragment>) {
-            if let Some(prev) = doc_strings.last_mut() {
-                prev.need_backline = true;
-            }
-        }
-
         let clean_attr = |(attr, parent_module): (&ast::Attribute, Option<DefId>)| {
             if let Some(value) = attr.doc_str() {
                 trace!("got doc_str={:?}", value);
@@ -1055,7 +1048,9 @@ impl Attributes {
                     indent: 0,
                 };
 
-                update_need_backline(&mut doc_strings);
+                if let Some(prev) = doc_strings.last_mut() {
+                    prev.need_backline = true;
+                }
 
                 doc_strings.push(frag);
 

src/librustdoc/clean/utils.rs

@@ -72,7 +72,7 @@ crate fn krate(cx: &mut DocContext<'_>) -> Crate {
         }));
     }
 
-    Crate { module, primitives, external_traits: cx.external_traits.clone(), collapsed: false }
+    Crate { module, primitives, external_traits: cx.external_traits.clone() }
 }
 
 fn external_generic_args(

src/librustdoc/core.rs

@@ -510,9 +510,6 @@ crate fn run_global_ctxt(
 
     krate = tcx.sess.time("create_format_cache", || Cache::populate(&mut ctxt, krate));
 
-    // The main crate doc comments are always collapsed.
-    krate.collapsed = true;
-
     (krate, ctxt.render_options, ctxt.cache)
 }
 

src/librustdoc/html/render/context.rs

@@ -88,8 +88,6 @@ crate struct SharedContext<'tcx> {
     crate local_sources: FxHashMap<PathBuf, String>,
     /// Show the memory layout of types in the docs.
     pub(super) show_type_layout: bool,
-    /// Whether the collapsed pass ran
-    collapsed: bool,
     /// The base-URL of the issue tracker for when an item has been tagged with
     /// an issue number.
     pub(super) issue_tracker_base_url: Option<String>,
@@ -142,12 +140,6 @@ impl SharedContext<'_> {
         Ok(())
     }
 
-    /// Returns the `collapsed_doc_value` of the given item if this is the main crate, otherwise
-    /// returns the `doc_value`.
-    crate fn maybe_collapsed_doc_value<'a>(&self, item: &'a clean::Item) -> Option<String> {
-        if self.collapsed { item.collapsed_doc_value() } else { item.doc_value() }
-    }
-
     crate fn edition(&self) -> Edition {
         self.tcx.sess.edition()
     }
@@ -472,7 +464,6 @@ impl<'tcx> FormatRenderer<'tcx> for Context<'tcx> {
         let (sender, receiver) = channel();
         let mut scx = SharedContext {
             tcx,
-            collapsed: krate.collapsed,
             src_root,
             local_sources,
             issue_tracker_base_url,

src/librustdoc/html/render/mod.rs

@@ -567,7 +567,7 @@ fn document_full_inner(
     is_collapsible: bool,
     heading_offset: HeadingOffset,
 ) {
-    if let Some(s) = cx.shared.maybe_collapsed_doc_value(item) {
+    if let Some(s) = item.collapsed_doc_value() {
         debug!("Doc block: =====\n{}\n=====", s);
         if is_collapsible {
             w.write_str(
@@ -1612,7 +1612,7 @@ fn render_impl(
             write!(w, "</summary>")
         }
 
-        if let Some(ref dox) = cx.shared.maybe_collapsed_doc_value(&i.impl_item) {
+        if let Some(ref dox) = i.impl_item.collapsed_doc_value() {
             let mut ids = cx.id_map.borrow_mut();
             write!(
                 w,