Auto merge of #130091 - matthiaskrgr:rollup-kalu1cs, r=matthiaskrgr

Rollup of 10 pull requests

Successful merges:

 - #126452 (Implement raw lifetimes and labels (`'r#ident`))
 - #129555 (stabilize const_float_bits_conv)
 - #129594 (explain the options bootstrap passes to curl)
 - #129677 (Don't build by-move body when async closure is tainted)
 - #129847 (Do not call query to compute coroutine layout for synthetic body of async closure)
 - #129869 (add a few more crashtests)
 - #130009 (rustdoc-search: allow trailing `Foo ->` arg search)
 - #130046 (str: make as_mut_ptr and as_bytes_mut unstably const)
 - #130047 (Win: Add dbghelp to the list of import libraries)
 - #130059 (Remove the unused  `llvm-skip-rebuild` option from x.py)

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

79 files changed, 886 insertions, 350 deletions

diff --git a/compiler/rustc_ast/src/mut_visit.rs b/compiler/rustc_ast/src/mut_visit.rs
index 8a66894a356..7c8af6c4a55 100644
--- a/compiler/rustc_ast/src/mut_visit.rs
+++ b/compiler/rustc_ast/src/mut_visit.rs
@@ -752,7 +752,7 @@ fn visit_lazy_tts<T: MutVisitor>(vis: &mut T, lazy_tts: &mut Option<LazyAttrToke
 pub fn visit_token<T: MutVisitor>(vis: &mut T, t: &mut Token) {
     let Token { kind, span } = t;
     match kind {
-        token::Ident(name, _ /*raw*/) | token::Lifetime(name) => {
+        token::Ident(name, _is_raw) | token::Lifetime(name, _is_raw) => {
             let mut ident = Ident::new(*name, *span);
             vis.visit_ident(&mut ident);
             *name = ident.name;
@@ -762,7 +762,7 @@ pub fn visit_token<T: MutVisitor>(vis: &mut T, t: &mut Token) {
         token::NtIdent(ident, _is_raw) => {
             vis.visit_ident(ident);
         }
-        token::NtLifetime(ident) => {
+        token::NtLifetime(ident, _is_raw) => {
             vis.visit_ident(ident);
         }
         token::Interpolated(nt) => {
diff --git a/compiler/rustc_ast/src/token.rs b/compiler/rustc_ast/src/token.rs
index f1dddb3acac..a0082a41713 100644
--- a/compiler/rustc_ast/src/token.rs
+++ b/compiler/rustc_ast/src/token.rs
@@ -331,11 +331,11 @@ pub enum TokenKind {
     /// Do not forget about `NtLifetime` when you want to match on lifetime identifiers.
     /// It's recommended to use `Token::(lifetime,uninterpolate,uninterpolated_span)` to
     /// treat regular and interpolated lifetime identifiers in the same way.
-    Lifetime(Symbol),
+    Lifetime(Symbol, IdentIsRaw),
     /// This identifier (and its span) is the lifetime passed to the
     /// declarative macro. The span in the surrounding `Token` is the span of
     /// the `lifetime` metavariable in the macro's RHS.
-    NtLifetime(Ident),
+    NtLifetime(Ident, IdentIsRaw),
 
     /// An embedded AST node, as produced by a macro. This only exists for
     /// historical reasons. We'd like to get rid of it, for multiple reasons.
@@ -458,7 +458,7 @@ impl Token {
     /// if they keep spans or perform edition checks.
     pub fn uninterpolated_span(&self) -> Span {
         match self.kind {
-            NtIdent(ident, _) | NtLifetime(ident) => ident.span,
+            NtIdent(ident, _) | NtLifetime(ident, _) => ident.span,
             Interpolated(ref nt) => nt.use_span(),
             _ => self.span,
         }
@@ -661,7 +661,9 @@ impl Token {
     pub fn uninterpolate(&self) -> Cow<'_, Token> {
         match self.kind {
             NtIdent(ident, is_raw) => Cow::Owned(Token::new(Ident(ident.name, is_raw), ident.span)),
-            NtLifetime(ident) => Cow::Owned(Token::new(Lifetime(ident.name), ident.span)),
+            NtLifetime(ident, is_raw) => {
+                Cow::Owned(Token::new(Lifetime(ident.name, is_raw), ident.span))
+            }
             _ => Cow::Borrowed(self),
         }
     }
@@ -679,11 +681,11 @@ impl Token {
 
     /// Returns a lifetime identifier if this token is a lifetime.
     #[inline]
-    pub fn lifetime(&self) -> Option<Ident> {
+    pub fn lifetime(&self) -> Option<(Ident, IdentIsRaw)> {
         // We avoid using `Token::uninterpolate` here because it's slow.
         match self.kind {
-            Lifetime(name) => Some(Ident::new(name, self.span)),
-            NtLifetime(ident) => Some(ident),
+            Lifetime(name, is_raw) => Some((Ident::new(name, self.span), is_raw)),
+            NtLifetime(ident, is_raw) => Some((ident, is_raw)),
             _ => None,
         }
     }
@@ -865,7 +867,7 @@ impl Token {
                 _ => return None,
             },
             SingleQuote => match joint.kind {
-                Ident(name, IdentIsRaw::No) => Lifetime(Symbol::intern(&format!("'{name}"))),
+                Ident(name, is_raw) => Lifetime(Symbol::intern(&format!("'{name}")), is_raw),
                 _ => return None,
             },
 
diff --git a/compiler/rustc_ast/src/tokenstream.rs b/compiler/rustc_ast/src/tokenstream.rs
index 057b4455dca..fc1dd2caf68 100644
--- a/compiler/rustc_ast/src/tokenstream.rs
+++ b/compiler/rustc_ast/src/tokenstream.rs
@@ -482,11 +482,11 @@ impl TokenStream {
             token::NtIdent(ident, is_raw) => {
                 TokenTree::Token(Token::new(token::Ident(ident.name, is_raw), ident.span), spacing)
             }
-            token::NtLifetime(ident) => TokenTree::Delimited(
+            token::NtLifetime(ident, is_raw) => TokenTree::Delimited(
                 DelimSpan::from_single(token.span),
                 DelimSpacing::new(Spacing::JointHidden, spacing),
                 Delimiter::Invisible,
-                TokenStream::token_alone(token::Lifetime(ident.name), ident.span),
+                TokenStream::token_alone(token::Lifetime(ident.name, is_raw), ident.span),
             ),
             token::Interpolated(ref nt) => TokenTree::Delimited(
                 DelimSpan::from_single(token.span),
diff --git a/compiler/rustc_ast_pretty/src/pprust/state.rs b/compiler/rustc_ast_pretty/src/pprust/state.rs
index c7ff39d23ed..3b1449d9a91 100644
--- a/compiler/rustc_ast_pretty/src/pprust/state.rs
+++ b/compiler/rustc_ast_pretty/src/pprust/state.rs
@@ -11,7 +11,9 @@ use std::borrow::Cow;
 use ast::TraitBoundModifiers;
 use rustc_ast::attr::AttrIdGenerator;
 use rustc_ast::ptr::P;
-use rustc_ast::token::{self, BinOpToken, CommentKind, Delimiter, Nonterminal, Token, TokenKind};
+use rustc_ast::token::{
+    self, BinOpToken, CommentKind, Delimiter, IdentIsRaw, Nonterminal, Token, TokenKind,
+};
 use rustc_ast::tokenstream::{Spacing, TokenStream, TokenTree};
 use rustc_ast::util::classify;
 use rustc_ast::util::comments::{Comment, CommentStyle};
@@ -947,8 +949,13 @@ pub trait PrintState<'a>: std::ops::Deref<Target = pp::Printer> + std::ops::Dere
             token::NtIdent(ident, is_raw) => {
                 IdentPrinter::for_ast_ident(ident, is_raw.into()).to_string().into()
             }
-            token::Lifetime(name) => name.to_string().into(),
-            token::NtLifetime(ident) => ident.name.to_string().into(),
+
+            token::Lifetime(name, IdentIsRaw::No)
+            | token::NtLifetime(Ident { name, .. }, IdentIsRaw::No) => name.to_string().into(),
+            token::Lifetime(name, IdentIsRaw::Yes)
+            | token::NtLifetime(Ident { name, .. }, IdentIsRaw::Yes) => {
+                format!("'r#{}", &name.as_str()[1..]).into()
+            }
 
             /* Other */
             token::DocComment(comment_kind, attr_style, data) => {
diff --git a/compiler/rustc_expand/src/mbe/macro_parser.rs b/compiler/rustc_expand/src/mbe/macro_parser.rs
index 9011d02da33..501a2417fcf 100644
--- a/compiler/rustc_expand/src/mbe/macro_parser.rs
+++ b/compiler/rustc_expand/src/mbe/macro_parser.rs
@@ -398,8 +398,10 @@ pub(crate) enum NamedMatch {
 fn token_name_eq(t1: &Token, t2: &Token) -> bool {
     if let (Some((ident1, is_raw1)), Some((ident2, is_raw2))) = (t1.ident(), t2.ident()) {
         ident1.name == ident2.name && is_raw1 == is_raw2
-    } else if let (Some(ident1), Some(ident2)) = (t1.lifetime(), t2.lifetime()) {
-        ident1.name == ident2.name
+    } else if let (Some((ident1, is_raw1)), Some((ident2, is_raw2))) =
+        (t1.lifetime(), t2.lifetime())
+    {
+        ident1.name == ident2.name && is_raw1 == is_raw2
     } else {
         t1.kind == t2.kind
     }
diff --git a/compiler/rustc_expand/src/mbe/transcribe.rs b/compiler/rustc_expand/src/mbe/transcribe.rs
index b06910595bb..39489a8df1b 100644
--- a/compiler/rustc_expand/src/mbe/transcribe.rs
+++ b/compiler/rustc_expand/src/mbe/transcribe.rs
@@ -283,9 +283,9 @@ pub(super) fn transcribe<'a>(
                             let kind = token::NtIdent(*ident, *is_raw);
                             TokenTree::token_alone(kind, sp)
                         }
-                        MatchedSingle(ParseNtResult::Lifetime(ident)) => {
+                        MatchedSingle(ParseNtResult::Lifetime(ident, is_raw)) => {
                             marker.visit_span(&mut sp);
-                            let kind = token::NtLifetime(*ident);
+                            let kind = token::NtLifetime(*ident, *is_raw);
                             TokenTree::token_alone(kind, sp)
                         }
                         MatchedSingle(ParseNtResult::Nt(nt)) => {
diff --git a/compiler/rustc_expand/src/proc_macro_server.rs b/compiler/rustc_expand/src/proc_macro_server.rs
index 4ff5da1a4bd..5798bcedc22 100644
--- a/compiler/rustc_expand/src/proc_macro_server.rs
+++ b/compiler/rustc_expand/src/proc_macro_server.rs
@@ -229,15 +229,16 @@ impl FromInternal<(TokenStream, &mut Rustc<'_, '_>)> for Vec<TokenTree<TokenStre
                     span: ident.span,
                 })),
 
-                Lifetime(name) => {
+                Lifetime(name, is_raw) => {
                     let ident = symbol::Ident::new(name, span).without_first_quote();
                     trees.extend([
                         TokenTree::Punct(Punct { ch: b'\'', joint: true, span }),
-                        TokenTree::Ident(Ident { sym: ident.name, is_raw: false, span }),
+                        TokenTree::Ident(Ident { sym: ident.name, is_raw: is_raw.into(), span }),
                     ]);
                 }
-                NtLifetime(ident) => {
-                    let stream = TokenStream::token_alone(token::Lifetime(ident.name), ident.span);
+                NtLifetime(ident, is_raw) => {
+                    let stream =
+                        TokenStream::token_alone(token::Lifetime(ident.name, is_raw), ident.span);
                     trees.push(TokenTree::Group(Group {
                         delimiter: pm::Delimiter::None,
                         stream: Some(stream),
diff --git a/compiler/rustc_lexer/src/lib.rs b/compiler/rustc_lexer/src/lib.rs
index 31fdd2d7cec..60aab668cba 100644
--- a/compiler/rustc_lexer/src/lib.rs
+++ b/compiler/rustc_lexer/src/lib.rs
@@ -91,6 +91,15 @@ pub enum TokenKind {
     /// tokens.
     UnknownPrefix,
 
+    /// An unknown prefix in a lifetime, like `'foo#`.
+    ///
+    /// Note that like above, only the `'` and prefix are included in the token
+    /// and not the separator.
+    UnknownPrefixLifetime,
+
+    /// `'r#lt`, which in edition < 2021 is split into several tokens: `'r # lt`.
+    RawLifetime,
+
     /// Similar to the above, but *always* an error on every edition. This is used
     /// for emoji identifier recovery, as those are not meant to be ever accepted.
     InvalidPrefix,
@@ -677,9 +686,17 @@ impl Cursor<'_> {
             return Literal { kind, suffix_start };
         }
 
+        if self.first() == 'r' && self.second() == '#' && is_id_start(self.third()) {
+            // Eat "r" and `#`, and identifier start characters.
+            self.bump();
+            self.bump();
+            self.bump();
+            self.eat_while(is_id_continue);
+            return RawLifetime;
+        }
+
         // Either a lifetime or a character literal with
         // length greater than 1.
-
         let starts_with_number = self.first().is_ascii_digit();
 
         // Skip the literal contents.
@@ -688,15 +705,17 @@ impl Cursor<'_> {
         self.bump();
         self.eat_while(is_id_continue);
 
-        // Check if after skipping literal contents we've met a closing
-        // single quote (which means that user attempted to create a
-        // string with single quotes).
-        if self.first() == '\'' {
-            self.bump();
-            let kind = Char { terminated: true };
-            Literal { kind, suffix_start: self.pos_within_token() }
-        } else {
-            Lifetime { starts_with_number }
+        match self.first() {
+            // Check if after skipping literal contents we've met a closing
+            // single quote (which means that user attempted to create a
+            // string with single quotes).
+            '\'' => {
+                self.bump();
+                let kind = Char { terminated: true };
+                Literal { kind, suffix_start: self.pos_within_token() }
+            }
+            '#' if !starts_with_number => UnknownPrefixLifetime,
+            _ => Lifetime { starts_with_number },
         }
     }
 
diff --git a/compiler/rustc_lint/messages.ftl b/compiler/rustc_lint/messages.ftl
index 5a368f4ed9a..7d4dee45c26 100644
--- a/compiler/rustc_lint/messages.ftl
+++ b/compiler/rustc_lint/messages.ftl
@@ -708,6 +708,10 @@ lint_range_endpoint_out_of_range = range endpoint is out of range for `{$ty}`
 lint_range_use_inclusive_range = use an inclusive range instead
 
 
+lint_raw_prefix = prefix `'r` is reserved
+    .label = reserved prefix
+    .suggestion = insert whitespace here to avoid this being parsed as a prefix in Rust 2021
+
 lint_reason_must_be_string_literal = reason must be a string literal
 
 lint_reason_must_come_last = reason in lint attribute must come last
diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs
index d8482567bbe..824a1868c55 100644
--- a/compiler/rustc_lint/src/builtin.rs
+++ b/compiler/rustc_lint/src/builtin.rs
@@ -1851,9 +1851,16 @@ impl KeywordIdents {
                 TokenTree::Token(token, _) => {
                     if let Some((ident, token::IdentIsRaw::No)) = token.ident() {
                         if !prev_dollar {
-                            self.check_ident_token(cx, UnderMacro(true), ident);
+                            self.check_ident_token(cx, UnderMacro(true), ident, "");
                         }
-                    } else if *token == TokenKind::Dollar {
+                    } else if let Some((ident, token::IdentIsRaw::No)) = token.lifetime() {
+                        self.check_ident_token(
+                            cx,
+                            UnderMacro(true),
+                            ident.without_first_quote(),
+                            "'",
+                        );
+                    } else if token.kind == TokenKind::Dollar {
                         prev_dollar = true;
                         continue;
                     }
@@ -1869,6 +1876,7 @@ impl KeywordIdents {
         cx: &EarlyContext<'_>,
         UnderMacro(under_macro): UnderMacro,
         ident: Ident,
+        prefix: &'static str,
     ) {
         let (lint, edition) = match ident.name {
             kw::Async | kw::Await | kw::Try => (KEYWORD_IDENTS_2018, Edition::Edition2018),
@@ -1902,7 +1910,7 @@ impl KeywordIdents {
         cx.emit_span_lint(
             lint,
             ident.span,
-            BuiltinKeywordIdents { kw: ident, next: edition, suggestion: ident.span },
+            BuiltinKeywordIdents { kw: ident, next: edition, suggestion: ident.span, prefix },
         );
     }
 }
@@ -1915,7 +1923,11 @@ impl EarlyLintPass for KeywordIdents {
         self.check_tokens(cx, &mac.args.tokens);
     }
     fn check_ident(&mut self, cx: &EarlyContext<'_>, ident: Ident) {
-        self.check_ident_token(cx, UnderMacro(false), ident);
+        if ident.name.as_str().starts_with('\'') {
+            self.check_ident_token(cx, UnderMacro(false), ident.without_first_quote(), "'");
+        } else {
+            self.check_ident_token(cx, UnderMacro(false), ident, "");
+        }
     }
 }
 
diff --git a/compiler/rustc_lint/src/context/diagnostics.rs b/compiler/rustc_lint/src/context/diagnostics.rs
index de34b9bebe9..fd13c418c09 100644
--- a/compiler/rustc_lint/src/context/diagnostics.rs
+++ b/compiler/rustc_lint/src/context/diagnostics.rs
@@ -172,6 +172,10 @@ pub(super) fn decorate_lint(sess: &Session, diagnostic: BuiltinLintDiag, diag: &
             }
             .decorate_lint(diag);
         }
+        BuiltinLintDiag::RawPrefix(label_span) => {
+            lints::RawPrefix { label: label_span, suggestion: label_span.shrink_to_hi() }
+                .decorate_lint(diag);
+        }
         BuiltinLintDiag::UnusedBuiltinAttribute { attr_name, macro_name, invoc_span } => {
             lints::UnusedBuiltinAttribute { invoc_span, attr_name, macro_name }.decorate_lint(diag);
         }
diff --git a/compiler/rustc_lint/src/lints.rs b/compiler/rustc_lint/src/lints.rs
index ae7e9659856..e49b102cb39 100644
--- a/compiler/rustc_lint/src/lints.rs
+++ b/compiler/rustc_lint/src/lints.rs
@@ -363,8 +363,9 @@ pub(crate) enum BuiltinEllipsisInclusiveRangePatternsLint {
 pub(crate) struct BuiltinKeywordIdents {
     pub kw: Ident,
     pub next: Edition,
-    #[suggestion(code = "r#{kw}", applicability = "machine-applicable")]
+    #[suggestion(code = "{prefix}r#{kw}", applicability = "machine-applicable")]
     pub suggestion: Span,
+    pub prefix: &'static str,
 }
 
 #[derive(LintDiagnostic)]
@@ -2815,6 +2816,15 @@ pub(crate) struct ReservedPrefix {
 }
 
 #[derive(LintDiagnostic)]
+#[diag(lint_raw_prefix)]
+pub(crate) struct RawPrefix {
+    #[label]
+    pub label: Span,
+    #[suggestion(code = " ", applicability = "machine-applicable")]
+    pub suggestion: Span,
+}
+
+#[derive(LintDiagnostic)]
 #[diag(lint_unused_builtin_attribute)]
 pub(crate) struct UnusedBuiltinAttribute {
     #[note]
diff --git a/compiler/rustc_lint_defs/src/lib.rs b/compiler/rustc_lint_defs/src/lib.rs
index 9a72e4f6739..5c4b7e5664d 100644
--- a/compiler/rustc_lint_defs/src/lib.rs
+++ b/compiler/rustc_lint_defs/src/lib.rs
@@ -612,6 +612,8 @@ pub enum BuiltinLintDiag {
     LegacyDeriveHelpers(Span),
     OrPatternsBackCompat(Span, String),
     ReservedPrefix(Span, String),
+    /// `'r#` in edition < 2021.
+    RawPrefix(Span),
     TrailingMacro(bool, Ident),
     BreakWithLabelAndLoop(Span),
     UnicodeTextFlow(Span, String),
diff --git a/compiler/rustc_mir_transform/src/coroutine/by_move_body.rs b/compiler/rustc_mir_transform/src/coroutine/by_move_body.rs
index cf39c136b01..9e35dfed0ee 100644
--- a/compiler/rustc_mir_transform/src/coroutine/by_move_body.rs
+++ b/compiler/rustc_mir_transform/src/coroutine/by_move_body.rs
@@ -88,6 +88,11 @@ pub fn coroutine_by_move_body_def_id<'tcx>(
 ) -> DefId {
     let body = tcx.mir_built(coroutine_def_id).borrow();
 
+    // If the typeck results are tainted, no need to make a by-ref body.
+    if body.tainted_by_errors.is_some() {
+        return coroutine_def_id.to_def_id();
+    }
+
     let Some(hir::CoroutineKind::Desugared(_, hir::CoroutineSource::Closure)) =
         tcx.coroutine_kind(coroutine_def_id)
     else {
@@ -98,7 +103,9 @@ pub fn coroutine_by_move_body_def_id<'tcx>(
     // the MIR body will be constructed well.
     let coroutine_ty = body.local_decls[ty::CAPTURE_STRUCT_LOCAL].ty;
 
-    let ty::Coroutine(_, args) = *coroutine_ty.kind() else { bug!("{body:#?}") };
+    let ty::Coroutine(_, args) = *coroutine_ty.kind() else {
+        bug!("tried to create by-move body of non-coroutine receiver");
+    };
     let args = args.as_coroutine();
 
     let coroutine_kind = args.kind_ty().to_opt_closure_kind().unwrap();
@@ -107,7 +114,7 @@ pub fn coroutine_by_move_body_def_id<'tcx>(
     let ty::CoroutineClosure(_, parent_args) =
         *tcx.type_of(parent_def_id).instantiate_identity().kind()
     else {
-        bug!();
+        bug!("coroutine's parent was not a coroutine-closure");
     };
     if parent_args.references_error() {
         return coroutine_def_id.to_def_id();
diff --git a/compiler/rustc_mir_transform/src/validate.rs b/compiler/rustc_mir_transform/src/validate.rs
index 69e2592e82c..e515dfc5ea5 100644
--- a/compiler/rustc_mir_transform/src/validate.rs
+++ b/compiler/rustc_mir_transform/src/validate.rs
@@ -1,6 +1,7 @@
 //! Validates the MIR to ensure that invariants are upheld.
 
 use rustc_data_structures::fx::{FxHashMap, FxHashSet};
+use rustc_hir as hir;
 use rustc_hir::LangItem;
 use rustc_index::bit_set::BitSet;
 use rustc_index::IndexVec;
@@ -714,7 +715,17 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> {
                             // since we may be in the process of computing this MIR in the
                             // first place.
                             let layout = if def_id == self.caller_body.source.def_id() {
-                                // FIXME: This is not right for async closures.
+                                self.caller_body.coroutine_layout_raw()
+                            } else if let Some(hir::CoroutineKind::Desugared(
+                                _,
+                                hir::CoroutineSource::Closure,
+                            )) = self.tcx.coroutine_kind(def_id)
+                                && let ty::ClosureKind::FnOnce =
+                                    args.as_coroutine().kind_ty().to_opt_closure_kind().unwrap()
+                                && self.caller_body.source.def_id()
+                                    == self.tcx.coroutine_by_move_body_def_id(def_id)
+                            {
+                                // Same if this is the by-move body of a coroutine-closure.
                                 self.caller_body.coroutine_layout_raw()
                             } else {
                                 self.tcx.coroutine_layout(def_id, args.as_coroutine().kind_ty())
diff --git a/compiler/rustc_parse/src/lexer/mod.rs b/compiler/rustc_parse/src/lexer/mod.rs
index f30939093c2..b7232ff21ca 100644
--- a/compiler/rustc_parse/src/lexer/mod.rs
+++ b/compiler/rustc_parse/src/lexer/mod.rs
@@ -13,7 +13,6 @@ use rustc_session::lint::builtin::{
 };
 use rustc_session::lint::BuiltinLintDiag;
 use rustc_session::parse::ParseSess;
-use rustc_span::edition::Edition;
 use rustc_span::symbol::Symbol;
 use rustc_span::{BytePos, Pos, Span};
 use tracing::debug;
@@ -188,9 +187,7 @@ impl<'psess, 'src> StringReader<'psess, 'src> {
                     preceded_by_whitespace = true;
                     continue;
                 }
-                rustc_lexer::TokenKind::Ident => {
-                    self.ident(start)
-                }
+                rustc_lexer::TokenKind::Ident => self.ident(start),
                 rustc_lexer::TokenKind::RawIdent => {
                     let sym = nfc_normalize(self.str_from(start + BytePos(2)));
                     let span = self.mk_sp(start, self.pos);
@@ -205,20 +202,31 @@ impl<'psess, 'src> StringReader<'psess, 'src> {
                     self.report_unknown_prefix(start);
                     self.ident(start)
                 }
-                rustc_lexer::TokenKind::InvalidIdent
-                | rustc_lexer::TokenKind::InvalidPrefix
+                rustc_lexer::TokenKind::UnknownPrefixLifetime => {
+                    self.report_unknown_prefix(start);
+                    // Include the leading `'` in the real identifier, for macro
+                    // expansion purposes. See #12512 for the gory details of why
+                    // this is necessary.
+                    let lifetime_name = self.str_from(start);
+                    self.last_lifetime = Some(self.mk_sp(start, start + BytePos(1)));
+                    let ident = Symbol::intern(lifetime_name);
+                    token::Lifetime(ident, IdentIsRaw::No)
+                }
+                rustc_lexer::TokenKind::InvalidIdent | rustc_lexer::TokenKind::InvalidPrefix
                     // Do not recover an identifier with emoji if the codepoint is a confusable
                     // with a recoverable substitution token, like `➖`.
-                    if !UNICODE_ARRAY
-                        .iter()
-                        .any(|&(c, _, _)| {
-                            let sym = self.str_from(start);
-                            sym.chars().count() == 1 && c == sym.chars().next().unwrap()
-                        }) =>
+                    if !UNICODE_ARRAY.iter().any(|&(c, _, _)| {
+                        let sym = self.str_from(start);
+                        sym.chars().count() == 1 && c == sym.chars().next().unwrap()
+                    }) =>
                 {
                     let sym = nfc_normalize(self.str_from(start));
                     let span = self.mk_sp(start, self.pos);
-                    self.psess.bad_unicode_identifiers.borrow_mut().entry(sym).or_default()
+                    self.psess
+                        .bad_unicode_identifiers
+                        .borrow_mut()
+                        .entry(sym)
+                        .or_default()
                         .push(span);
                     token::Ident(sym, IdentIsRaw::No)
                 }
@@ -249,9 +257,9 @@ impl<'psess, 'src> StringReader<'psess, 'src> {
                     let suffix = if suffix_start < self.pos {
                         let string = self.str_from(suffix_start);
                         if string == "_" {
-                            self
-                                .dcx()
-                                .emit_err(errors::UnderscoreLiteralSuffix { span: self.mk_sp(suffix_start, self.pos) });
+                            self.dcx().emit_err(errors::UnderscoreLiteralSuffix {
+                                span: self.mk_sp(suffix_start, self.pos),
+                            });
                             None
                         } else {
                             Some(Symbol::intern(string))
@@ -269,12 +277,47 @@ impl<'psess, 'src> StringReader<'psess, 'src> {
                     self.last_lifetime = Some(self.mk_sp(start, start + BytePos(1)));
                     if starts_with_number {
                         let span = self.mk_sp(start, self.pos);
-                        self.dcx().struct_err("lifetimes cannot start with a number")
+                        self.dcx()
+                            .struct_err("lifetimes cannot start with a number")
                             .with_span(span)
                             .stash(span, StashKey::LifetimeIsChar);
                     }
                     let ident = Symbol::intern(lifetime_name);
-                    token::Lifetime(ident)
+                    token::Lifetime(ident, IdentIsRaw::No)
+                }
+                rustc_lexer::TokenKind::RawLifetime => {
+                    self.last_lifetime = Some(self.mk_sp(start, start + BytePos(1)));
+
+                    let ident_start = start + BytePos(3);
+                    let prefix_span = self.mk_sp(start, ident_start);
+
+                    if prefix_span.at_least_rust_2021() {
+                        let lifetime_name_without_tick = self.str_from(ident_start);
+                        // Put the `'` back onto the lifetime name.
+                        let mut lifetime_name = String::with_capacity(lifetime_name_without_tick.len() + 1);
+                        lifetime_name.push('\'');
+                        lifetime_name += lifetime_name_without_tick;
+                        let sym = Symbol::intern(&lifetime_name);
+
+                        token::Lifetime(sym, IdentIsRaw::Yes)
+                    } else {
+                        // Otherwise, this should be parsed like `'r`. Warn about it though.
+                        self.psess.buffer_lint(
+                            RUST_2021_PREFIXES_INCOMPATIBLE_SYNTAX,
+                            prefix_span,
+                            ast::CRATE_NODE_ID,
+                            BuiltinLintDiag::RawPrefix(prefix_span),
+                        );
+
+                        // Reset the state so we just lex the `'r`.
+                        let lt_start = start + BytePos(2);
+                        self.pos = lt_start;
+                        self.cursor = Cursor::new(&str_before[2 as usize..]);
+
+                        let lifetime_name = self.str_from(start);
+                        let ident = Symbol::intern(lifetime_name);
+                        token::Lifetime(ident, IdentIsRaw::No)
+                    }
                 }
                 rustc_lexer::TokenKind::Semi => token::Semi,
                 rustc_lexer::TokenKind::Comma => token::Comma,
@@ -331,16 +374,19 @@ impl<'psess, 'src> StringReader<'psess, 'src> {
                     // first remove compound tokens like `<<` from `rustc_lexer`, and then add
                     // fancier error recovery to it, as there will be less overall work to do this
                     // way.
-                    let (token, sugg) = unicode_chars::check_for_substitution(self, start, c, repeats+1);
+                    let (token, sugg) =
+                        unicode_chars::check_for_substitution(self, start, c, repeats + 1);
                     self.dcx().emit_err(errors::UnknownTokenStart {
                         span: self.mk_sp(start, self.pos + Pos::from_usize(repeats * c.len_utf8())),
                         escaped: escaped_char(c),
                         sugg,
-                        null: if c == '\x00' {Some(errors::UnknownTokenNull)} else {None},
+                        null: if c == '\x00' { Some(errors::UnknownTokenNull) } else { None },
                         repeat: if repeats > 0 {
                             swallow_next_invalid = repeats;
                             Some(errors::UnknownTokenRepeat { repeats })
-                        } else {None}
+                        } else {
+                            None
+                        },
                     });
 
                     if let Some(token) = token {
@@ -699,7 +745,7 @@ impl<'psess, 'src> StringReader<'psess, 'src> {
 
         let expn_data = prefix_span.ctxt().outer_expn_data();
 
-        if expn_data.edition >= Edition::Edition2021 {
+        if expn_data.edition.at_least_rust_2021() {
             // In Rust 2021, this is a hard error.
             let sugg = if prefix == "rb" {
                 Some(errors::UnknownPrefixSugg::UseBr(prefix_span))
diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs
index 84684e808d9..ecc4cd96faf 100644
--- a/compiler/rustc_parse/src/parser/expr.rs
+++ b/compiler/rustc_parse/src/parser/expr.rs
@@ -2050,7 +2050,7 @@ impl<'a> Parser<'a> {
         };
         // On an error path, eagerly consider a lifetime to be an unclosed character lit, if that
         // makes sense.
-        if let Some(ident) = self.token.lifetime()
+        if let Some((ident, IdentIsRaw::No)) = self.token.lifetime()
             && could_be_unclosed_char_literal(ident)
         {
             let lt = self.expect_lifetime();
@@ -2925,9 +2925,9 @@ impl<'a> Parser<'a> {
     }
 
     pub(crate) fn eat_label(&mut self) -> Option<Label> {
-        if let Some(ident) = self.token.lifetime() {
+        if let Some((ident, is_raw)) = self.token.lifetime() {
             // Disallow `'fn`, but with a better error message than `expect_lifetime`.
-            if ident.without_first_quote().is_reserved() {
+            if matches!(is_raw, IdentIsRaw::No) && ident.without_first_quote().is_reserved() {
                 self.dcx().emit_err(errors::InvalidLabel { span: ident.span, name: ident.name });
             }
 
diff --git a/compiler/rustc_parse/src/parser/mod.rs b/compiler/rustc_parse/src/parser/mod.rs
index 61e3fa2e6c5..b90c41d9163 100644
--- a/compiler/rustc_parse/src/parser/mod.rs
+++ b/compiler/rustc_parse/src/parser/mod.rs
@@ -1666,7 +1666,7 @@ enum FlatToken {
 pub enum ParseNtResult {
     Tt(TokenTree),
     Ident(Ident, IdentIsRaw),
-    Lifetime(Ident),
+    Lifetime(Ident, IdentIsRaw),
 
     /// This case will eventually be removed, along with `Token::Interpolate`.
     Nt(Lrc<Nonterminal>),
diff --git a/compiler/rustc_parse/src/parser/nonterminal.rs b/compiler/rustc_parse/src/parser/nonterminal.rs
index e66d0df012b..44b169c881e 100644
--- a/compiler/rustc_parse/src/parser/nonterminal.rs
+++ b/compiler/rustc_parse/src/parser/nonterminal.rs
@@ -88,7 +88,7 @@ impl<'a> Parser<'a> {
             },
             NonterminalKind::Pat(pat_kind) => token.can_begin_pattern(pat_kind),
             NonterminalKind::Lifetime => match &token.kind {
-                token::Lifetime(_) | token::NtLifetime(..) => true,
+                token::Lifetime(..) | token::NtLifetime(..) => true,
                 _ => false,
             },
             NonterminalKind::TT | NonterminalKind::Item | NonterminalKind::Stmt => {
@@ -171,9 +171,9 @@ impl<'a> Parser<'a> {
             NonterminalKind::Lifetime => {
                 // We want to keep `'keyword` parsing, just like `keyword` is still
                 // an ident for nonterminal purposes.
-                return if let Some(ident) = self.token.lifetime() {
+                return if let Some((ident, is_raw)) = self.token.lifetime() {
                     self.bump();
-                    Ok(ParseNtResult::Lifetime(ident))
+                    Ok(ParseNtResult::Lifetime(ident, is_raw))
                 } else {
                     Err(self.dcx().create_err(UnexpectedNonterminal::Lifetime {
                         span: self.token.span,
diff --git a/compiler/rustc_parse/src/parser/pat.rs b/compiler/rustc_parse/src/parser/pat.rs
index f87b5649654..cbd35ffdfa9 100644
--- a/compiler/rustc_parse/src/parser/pat.rs
+++ b/compiler/rustc_parse/src/parser/pat.rs
@@ -1,6 +1,6 @@
 use rustc_ast::mut_visit::{walk_pat, MutVisitor};
 use rustc_ast::ptr::P;
-use rustc_ast::token::{self, BinOpToken, Delimiter, Token};
+use rustc_ast::token::{self, BinOpToken, Delimiter, IdentIsRaw, Token};
 use rustc_ast::{
     self as ast, AttrVec, BindingMode, ByRef, Expr, ExprKind, MacCall, Mutability, Pat, PatField,
     PatFieldsRest, PatKind, Path, QSelf, RangeEnd, RangeSyntax,
@@ -548,7 +548,7 @@ impl<'a> Parser<'a> {
                     None => PatKind::Path(qself, path),
                 }
             }
-        } else if let Some(lt) = self.token.lifetime()
+        } else if let Some((lt, IdentIsRaw::No)) = self.token.lifetime()
             // In pattern position, we're totally fine with using "next token isn't colon"
             // as a heuristic. We could probably just always try to recover if it's a lifetime,
             // because we never have `'a: label {}` in a pattern position anyways, but it does
@@ -689,7 +689,7 @@ impl<'a> Parser<'a> {
     /// Parse `&pat` / `&mut pat`.
     fn parse_pat_deref(&mut self, expected: Option<Expected>) -> PResult<'a, PatKind> {
         self.expect_and()?;
-        if let Some(lifetime) = self.token.lifetime() {
+        if let Some((lifetime, _)) = self.token.lifetime() {
             self.bump(); // `'a`
 
             self.dcx().emit_err(UnexpectedLifetimeInPattern {
diff --git a/compiler/rustc_parse/src/parser/ty.rs b/compiler/rustc_parse/src/parser/ty.rs
index 52f0b1c1b04..dd1cc75c7ff 100644
--- a/compiler/rustc_parse/src/parser/ty.rs
+++ b/compiler/rustc_parse/src/parser/ty.rs
@@ -1,5 +1,5 @@
 use rustc_ast::ptr::P;
-use rustc_ast::token::{self, BinOpToken, Delimiter, Token, TokenKind};
+use rustc_ast::token::{self, BinOpToken, Delimiter, IdentIsRaw, Token, TokenKind};
 use rustc_ast::util::case::Case;
 use rustc_ast::{
     self as ast, BareFnTy, BoundAsyncness, BoundConstness, BoundPolarity, FnRetTy, GenericBound,
@@ -1285,8 +1285,9 @@ impl<'a> Parser<'a> {
 
     /// Parses a single lifetime `'a` or panics.
     pub(super) fn expect_lifetime(&mut self) -> Lifetime {
-        if let Some(ident) = self.token.lifetime() {
-            if ident.without_first_quote().is_reserved()
+        if let Some((ident, is_raw)) = self.token.lifetime() {
+            if matches!(is_raw, IdentIsRaw::No)
+                && ident.without_first_quote().is_reserved()
                 && ![kw::UnderscoreLifetime, kw::StaticLifetime].contains(&ident.name)
             {
                 self.dcx().emit_err(errors::KeywordLifetime { span: ident.span });
diff --git a/library/core/src/lib.rs b/library/core/src/lib.rs
index 50e9884fea1..bda38254362 100644
--- a/library/core/src/lib.rs
+++ b/library/core/src/lib.rs
@@ -121,7 +121,6 @@
 #![feature(const_cell_into_inner)]
 #![feature(const_eval_select)]
 #![feature(const_exact_div)]
-#![feature(const_float_bits_conv)]
 #![feature(const_float_classify)]
 #![feature(const_fmt_arguments_new)]
 #![feature(const_hash)]
@@ -165,6 +164,8 @@
 #![feature(coverage_attribute)]
 #![feature(do_not_recommend)]
 #![feature(duration_consts_float)]
+#![feature(f128_const)]
+#![feature(f16_const)]
 #![feature(internal_impls_macro)]
 #![feature(ip)]
 #![feature(is_ascii_octdigit)]
diff --git a/library/core/src/num/f128.rs b/library/core/src/num/f128.rs
index d4236e47bfe..1959628bd8f 100644
--- a/library/core/src/num/f128.rs
+++ b/library/core/src/num/f128.rs
@@ -914,7 +914,7 @@ impl f128 {
     /// ```
     #[inline]
     #[unstable(feature = "f128", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f128_const", issue = "116909")]
     #[must_use = "this returns the result of the operation, without modifying the original"]
     pub const fn to_bits(self) -> u128 {
         // SAFETY: `u128` is a plain old datatype so we can always transmute to it.
@@ -963,7 +963,7 @@ impl f128 {
     #[inline]
     #[must_use]
     #[unstable(feature = "f128", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f128_const", issue = "116909")]
     pub const fn from_bits(v: u128) -> Self {
         // It turns out the safety issues with sNaN were overblown! Hooray!
         // SAFETY: `u128` is a plain old datatype so we can always transmute from it.
@@ -990,7 +990,7 @@ impl f128 {
     /// ```
     #[inline]
     #[unstable(feature = "f128", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f128_const", issue = "116909")]
     #[must_use = "this returns the result of the operation, without modifying the original"]
     pub const fn to_be_bytes(self) -> [u8; 16] {
         self.to_bits().to_be_bytes()
@@ -1016,7 +1016,7 @@ impl f128 {
     /// ```
     #[inline]
     #[unstable(feature = "f128", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f128_const", issue = "116909")]
     #[must_use = "this returns the result of the operation, without modifying the original"]
     pub const fn to_le_bytes(self) -> [u8; 16] {
         self.to_bits().to_le_bytes()
@@ -1053,7 +1053,7 @@ impl f128 {
     /// ```
     #[inline]
     #[unstable(feature = "f128", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f128_const", issue = "116909")]
     #[must_use = "this returns the result of the operation, without modifying the original"]
     pub const fn to_ne_bytes(self) -> [u8; 16] {
         self.to_bits().to_ne_bytes()
@@ -1081,7 +1081,7 @@ impl f128 {
     #[inline]
     #[must_use]
     #[unstable(feature = "f128", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f128_const", issue = "116909")]
     pub const fn from_be_bytes(bytes: [u8; 16]) -> Self {
         Self::from_bits(u128::from_be_bytes(bytes))
     }
@@ -1108,7 +1108,7 @@ impl f128 {
     #[inline]
     #[must_use]
     #[unstable(feature = "f128", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f128_const", issue = "116909")]
     pub const fn from_le_bytes(bytes: [u8; 16]) -> Self {
         Self::from_bits(u128::from_le_bytes(bytes))
     }
@@ -1145,7 +1145,7 @@ impl f128 {
     #[inline]
     #[must_use]
     #[unstable(feature = "f128", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f128_const", issue = "116909")]
     pub const fn from_ne_bytes(bytes: [u8; 16]) -> Self {
         Self::from_bits(u128::from_ne_bytes(bytes))
     }
diff --git a/library/core/src/num/f16.rs b/library/core/src/num/f16.rs
index 1e2f841aca7..9252e8c6015 100644
--- a/library/core/src/num/f16.rs
+++ b/library/core/src/num/f16.rs
@@ -925,7 +925,7 @@ impl f16 {
     /// ```
     #[inline]
     #[unstable(feature = "f16", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f16_const", issue = "116909")]
     #[must_use = "this returns the result of the operation, without modifying the original"]
     pub const fn to_bits(self) -> u16 {
         // SAFETY: `u16` is a plain old datatype so we can always transmute to it.
@@ -973,7 +973,7 @@ impl f16 {
     #[inline]
     #[must_use]
     #[unstable(feature = "f16", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f16_const", issue = "116909")]
     pub const fn from_bits(v: u16) -> Self {
         // It turns out the safety issues with sNaN were overblown! Hooray!
         // SAFETY: `u16` is a plain old datatype so we can always transmute from it.
@@ -999,7 +999,7 @@ impl f16 {
     /// ```
     #[inline]
     #[unstable(feature = "f16", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f16_const", issue = "116909")]
     #[must_use = "this returns the result of the operation, without modifying the original"]
     pub const fn to_be_bytes(self) -> [u8; 2] {
         self.to_bits().to_be_bytes()
@@ -1024,7 +1024,7 @@ impl f16 {
     /// ```
     #[inline]
     #[unstable(feature = "f16", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f16_const", issue = "116909")]
     #[must_use = "this returns the result of the operation, without modifying the original"]
     pub const fn to_le_bytes(self) -> [u8; 2] {
         self.to_bits().to_le_bytes()
@@ -1062,7 +1062,7 @@ impl f16 {
     /// ```
     #[inline]
     #[unstable(feature = "f16", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f16_const", issue = "116909")]
     #[must_use = "this returns the result of the operation, without modifying the original"]
     pub const fn to_ne_bytes(self) -> [u8; 2] {
         self.to_bits().to_ne_bytes()
@@ -1086,7 +1086,7 @@ impl f16 {
     #[inline]
     #[must_use]
     #[unstable(feature = "f16", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f16_const", issue = "116909")]
     pub const fn from_be_bytes(bytes: [u8; 2]) -> Self {
         Self::from_bits(u16::from_be_bytes(bytes))
     }
@@ -1109,7 +1109,7 @@ impl f16 {
     #[inline]
     #[must_use]
     #[unstable(feature = "f16", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f16_const", issue = "116909")]
     pub const fn from_le_bytes(bytes: [u8; 2]) -> Self {
         Self::from_bits(u16::from_le_bytes(bytes))
     }
@@ -1143,7 +1143,7 @@ impl f16 {
     #[inline]
     #[must_use]
     #[unstable(feature = "f16", issue = "116909")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_unstable(feature = "f16_const", issue = "116909")]
     pub const fn from_ne_bytes(bytes: [u8; 2]) -> Self {
         Self::from_bits(u16::from_ne_bytes(bytes))
     }
diff --git a/library/core/src/num/f32.rs b/library/core/src/num/f32.rs
index c1adcc753f2..2bc89722497 100644
--- a/library/core/src/num/f32.rs
+++ b/library/core/src/num/f32.rs
@@ -1115,7 +1115,7 @@ impl f32 {
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
     #[stable(feature = "float_bits_conv", since = "1.20.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[inline]
     pub const fn to_bits(self) -> u32 {
         // SAFETY: `u32` is a plain old datatype so we can always transmute to it.
@@ -1159,7 +1159,7 @@ impl f32 {
     /// assert_eq!(v, 12.5);
     /// ```
     #[stable(feature = "float_bits_conv", since = "1.20.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[must_use]
     #[inline]
     pub const fn from_bits(v: u32) -> Self {
@@ -1183,7 +1183,7 @@ impl f32 {
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[inline]
     pub const fn to_be_bytes(self) -> [u8; 4] {
         self.to_bits().to_be_bytes()
@@ -1204,7 +1204,7 @@ impl f32 {
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[inline]
     pub const fn to_le_bytes(self) -> [u8; 4] {
         self.to_bits().to_le_bytes()
@@ -1238,7 +1238,7 @@ impl f32 {
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[inline]
     pub const fn to_ne_bytes(self) -> [u8; 4] {
         self.to_bits().to_ne_bytes()
@@ -1256,7 +1256,7 @@ impl f32 {
     /// assert_eq!(value, 12.5);
     /// ```
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[must_use]
     #[inline]
     pub const fn from_be_bytes(bytes: [u8; 4]) -> Self {
@@ -1275,7 +1275,7 @@ impl f32 {
     /// assert_eq!(value, 12.5);
     /// ```
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[must_use]
     #[inline]
     pub const fn from_le_bytes(bytes: [u8; 4]) -> Self {
@@ -1305,7 +1305,7 @@ impl f32 {
     /// assert_eq!(value, 12.5);
     /// ```
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[must_use]
     #[inline]
     pub const fn from_ne_bytes(bytes: [u8; 4]) -> Self {
diff --git a/library/core/src/num/f64.rs b/library/core/src/num/f64.rs
index e6406771ad3..b3f5be9fc8a 100644
--- a/library/core/src/num/f64.rs
+++ b/library/core/src/num/f64.rs
@@ -1111,7 +1111,7 @@ impl f64 {
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
     #[stable(feature = "float_bits_conv", since = "1.20.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[inline]
     pub const fn to_bits(self) -> u64 {
         // SAFETY: `u64` is a plain old datatype so we can always transmute to it.
@@ -1155,7 +1155,7 @@ impl f64 {
     /// assert_eq!(v, 12.5);
     /// ```
     #[stable(feature = "float_bits_conv", since = "1.20.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[must_use]
     #[inline]
     pub const fn from_bits(v: u64) -> Self {
@@ -1179,7 +1179,7 @@ impl f64 {
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[inline]
     pub const fn to_be_bytes(self) -> [u8; 8] {
         self.to_bits().to_be_bytes()
@@ -1200,7 +1200,7 @@ impl f64 {
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[inline]
     pub const fn to_le_bytes(self) -> [u8; 8] {
         self.to_bits().to_le_bytes()
@@ -1234,7 +1234,7 @@ impl f64 {
     #[must_use = "this returns the result of the operation, \
                   without modifying the original"]
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[inline]
     pub const fn to_ne_bytes(self) -> [u8; 8] {
         self.to_bits().to_ne_bytes()
@@ -1252,7 +1252,7 @@ impl f64 {
     /// assert_eq!(value, 12.5);
     /// ```
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[must_use]
     #[inline]
     pub const fn from_be_bytes(bytes: [u8; 8]) -> Self {
@@ -1271,7 +1271,7 @@ impl f64 {
     /// assert_eq!(value, 12.5);
     /// ```
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[must_use]
     #[inline]
     pub const fn from_le_bytes(bytes: [u8; 8]) -> Self {
@@ -1301,7 +1301,7 @@ impl f64 {
     /// assert_eq!(value, 12.5);
     /// ```
     #[stable(feature = "float_to_from_bytes", since = "1.40.0")]
-    #[rustc_const_unstable(feature = "const_float_bits_conv", issue = "72447")]
+    #[rustc_const_stable(feature = "const_float_bits_conv", since = "CURRENT_RUSTC_VERSION")]
     #[must_use]
     #[inline]
     pub const fn from_ne_bytes(bytes: [u8; 8]) -> Self {
diff --git a/library/core/src/str/mod.rs b/library/core/src/str/mod.rs
index cf9f1bfc0eb..e947686487e 100644
--- a/library/core/src/str/mod.rs
+++ b/library/core/src/str/mod.rs
@@ -338,9 +338,10 @@ impl str {
     /// assert_eq!("🍔∈🌏", s);
     /// ```
     #[stable(feature = "str_mut_extras", since = "1.20.0")]
+    #[rustc_const_unstable(feature = "const_str_as_mut", issue = "130086")]
     #[must_use]
     #[inline(always)]
-    pub unsafe fn as_bytes_mut(&mut self) -> &mut [u8] {
+    pub const unsafe fn as_bytes_mut(&mut self) -> &mut [u8] {
         // SAFETY: the cast from `&str` to `&[u8]` is safe since `str`
         // has the same layout as `&[u8]` (only std can make this guarantee).
         // The pointer dereference is safe since it comes from a mutable reference which
@@ -383,10 +384,11 @@ impl str {
     /// It is your responsibility to make sure that the string slice only gets
     /// modified in a way that it remains valid UTF-8.
     #[stable(feature = "str_as_mut_ptr", since = "1.36.0")]
+    #[rustc_const_unstable(feature = "const_str_as_mut", issue = "130086")]
     #[rustc_never_returns_null_ptr]
     #[must_use]
     #[inline(always)]
-    pub fn as_mut_ptr(&mut self) -> *mut u8 {
+    pub const fn as_mut_ptr(&mut self) -> *mut u8 {
         self as *mut str as *mut u8
     }
 
diff --git a/library/windows_targets/src/lib.rs b/library/windows_targets/src/lib.rs
index 1965b6cf4ce..395cd6a4bab 100644
--- a/library/windows_targets/src/lib.rs
+++ b/library/windows_targets/src/lib.rs
@@ -38,4 +38,5 @@ pub macro link {
 #[link(name = "ntdll")]
 #[link(name = "userenv")]
 #[link(name = "ws2_32")]
+#[link(name = "dbghelp")] // required for backtrace-rs symbolization
 extern "C" {}
diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py
index 71f69e03a9f..666df49012c 100644
--- a/src/bootstrap/bootstrap.py
+++ b/src/bootstrap/bootstrap.py
@@ -106,22 +106,29 @@ def _download(path, url, probably_big, verbose, exception):
 
     try:
         if (probably_big or verbose) and "GITHUB_ACTIONS" not in os.environ:
-            option = "-#"
+            option = "--progress-bar"
         else:
-            option = "-s"
+            option = "--silent"
         # If curl is not present on Win32, we should not sys.exit
         #   but raise `CalledProcessError` or `OSError` instead
         require(["curl", "--version"], exception=platform_is_win32())
         extra_flags = []
         if curl_version() > (7, 70):
             extra_flags = [ "--retry-all-errors" ]
+        # options should be kept in sync with
+        # src/bootstrap/src/core/download.rs
+        # for consistency.
+        # they are also more compreprensivly explained in that file.
         run(["curl", option] + extra_flags + [
-            "-L", # Follow redirect.
-            "-y", "30", "-Y", "10",    # timeout if speed is < 10 bytes/sec for > 30 seconds
-            "--connect-timeout", "30",  # timeout if cannot connect within 30 seconds
-            "-o", path,
+            # Follow redirect.
+            "--location",
+            # timeout if speed is < 10 bytes/sec for > 30 seconds
+            "--speed-time", "30", "--speed-limit", "10",
+            # timeout if cannot connect within 30 seconds
+            "--connect-timeout", "30",
+            "--output", path,
             "--continue-at", "-",
-            "--retry", "3", "-SRf", url],
+            "--retry", "3", "--show-error", "--remote-time", "--fail", url],
             verbose=verbose,
             exception=True, # Will raise RuntimeError on failure
         )
diff --git a/src/bootstrap/src/core/config/flags.rs b/src/bootstrap/src/core/config/flags.rs
index c3f17402814..effc5f50911 100644
--- a/src/bootstrap/src/core/config/flags.rs
+++ b/src/bootstrap/src/core/config/flags.rs
@@ -143,9 +143,6 @@ pub struct Flags {
     /// Unless you know exactly what you are doing, you probably don't need this.
     pub bypass_bootstrap_lock: bool,
 
-    /// whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml
-    #[arg(global = true, long, value_name = "VALUE")]
-    pub llvm_skip_rebuild: Option<bool>,
     /// generate PGO profile with rustc build
     #[arg(global = true, value_hint = clap::ValueHint::FilePath, long, value_name = "PROFILE")]
     pub rust_profile_generate: Option<String>,
diff --git a/src/bootstrap/src/core/download.rs b/src/bootstrap/src/core/download.rs
index 1e3f8da5258..3f5ec70b9ab 100644
--- a/src/bootstrap/src/core/download.rs
+++ b/src/bootstrap/src/core/download.rs
@@ -228,25 +228,42 @@ impl Config {
     fn download_http_with_retries(&self, tempfile: &Path, url: &str, help_on_error: &str) {
         println!("downloading {url}");
         // Try curl. If that fails and we are on windows, fallback to PowerShell.
+        // options should be kept in sync with
+        // src/bootstrap/src/core/download.rs
+        // for consistency
         let mut curl = command("curl");
         curl.args([
-            "-y",
+            // follow redirect
+            "--location",
+            // timeout if speed is < 10 bytes/sec for > 30 seconds
+            "--speed-time",
             "30",
-            "-Y",
-            "10", // timeout if speed is < 10 bytes/sec for > 30 seconds
+            "--speed-limit",
+            "10",
+            // timeout if cannot connect within 30 seconds
             "--connect-timeout",
-            "30", // timeout if cannot connect within 30 seconds
-            "-o",
+            "30",
+            // output file
+            "--output",
             tempfile.to_str().unwrap(),
+            // if there is an error, don't restart the download,
+            // instead continue where it left off.
             "--continue-at",
             "-",
+            // retry up to 3 times.  note that this means a maximum of 4
+            // attempts will be made, since the first attempt isn't a *re*try.
             "--retry",
             "3",
-            "-SRf",
+            // show errors, even if --silent is specified
+            "--show-error",
+            // set timestamp of downloaded file to that of the server
+            "--remote-time",
+            // fail on non-ok http status
+            "--fail",
         ]);
         // Don't print progress in CI; the \r wrapping looks bad and downloads don't take long enough for progress to be useful.
         if CiEnv::is_ci() {
-            curl.arg("-s");
+            curl.arg("--silent");
         } else {
             curl.arg("--progress-bar");
         }
diff --git a/src/etc/completions/x.py.fish b/src/etc/completions/x.py.fish
index 3a83c89280f..df31b0d644e 100644
--- a/src/etc/completions/x.py.fish
+++ b/src/etc/completions/x.py.fish
@@ -1,6 +1,6 @@
 # Print an optspec for argparse to handle cmd's options that are independent of any subcommand.
 function __fish_x.py_global_optspecs
-	string join \n v/verbose i/incremental config= build-dir= build= host= target= exclude= skip= include-default-paths rustc-error-format= on-fail= dry-run dump-bootstrap-shims stage= keep-stage= keep-stage-std= src= j/jobs= warnings= error-format= json-output color= bypass-bootstrap-lock llvm-skip-rebuild= rust-profile-generate= rust-profile-use= llvm-profile-use= llvm-profile-generate enable-bolt-settings skip-stage0-validation reproducible-artifact= set= h/help
+	string join \n v/verbose i/incremental config= build-dir= build= host= target= exclude= skip= include-default-paths rustc-error-format= on-fail= dry-run dump-bootstrap-shims stage= keep-stage= keep-stage-std= src= j/jobs= warnings= error-format= json-output color= bypass-bootstrap-lock rust-profile-generate= rust-profile-use= llvm-profile-use= llvm-profile-generate enable-bolt-settings skip-stage0-validation reproducible-artifact= set= h/help
 end
 
 function __fish_x.py_needs_command
@@ -41,7 +41,6 @@ complete -c x.py -n "__fish_x.py_needs_command" -s j -l jobs -d 'number of jobs
 complete -c x.py -n "__fish_x.py_needs_command" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_needs_command" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_needs_command" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_needs_command" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_needs_command" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_needs_command" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_needs_command" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -92,7 +91,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand build" -s j -l jobs -d 'number
 complete -c x.py -n "__fish_x.py_using_subcommand build" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand build" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand build" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand build" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand build" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand build" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand build" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -126,7 +124,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand check" -s j -l jobs -d 'number
 complete -c x.py -n "__fish_x.py_using_subcommand check" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand check" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand check" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand check" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand check" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand check" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand check" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -165,7 +162,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand clippy" -s j -l jobs -d 'numbe
 complete -c x.py -n "__fish_x.py_using_subcommand clippy" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand clippy" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand clippy" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand clippy" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand clippy" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand clippy" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand clippy" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -202,7 +198,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand fix" -s j -l jobs -d 'number o
 complete -c x.py -n "__fish_x.py_using_subcommand fix" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand fix" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand fix" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand fix" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand fix" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand fix" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand fix" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -236,7 +231,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand fmt" -s j -l jobs -d 'number o
 complete -c x.py -n "__fish_x.py_using_subcommand fmt" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand fmt" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand fmt" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand fmt" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand fmt" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand fmt" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand fmt" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -272,7 +266,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand doc" -s j -l jobs -d 'number o
 complete -c x.py -n "__fish_x.py_using_subcommand doc" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand doc" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand doc" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand doc" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand doc" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand doc" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand doc" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -314,7 +307,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand test" -s j -l jobs -d 'number
 complete -c x.py -n "__fish_x.py_using_subcommand test" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand test" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand test" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand test" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand test" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand test" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand test" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -356,7 +348,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand miri" -s j -l jobs -d 'number
 complete -c x.py -n "__fish_x.py_using_subcommand miri" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand miri" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand miri" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand miri" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand miri" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand miri" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand miri" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -394,7 +385,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand bench" -s j -l jobs -d 'number
 complete -c x.py -n "__fish_x.py_using_subcommand bench" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand bench" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand bench" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand bench" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand bench" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand bench" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand bench" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -428,7 +418,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand clean" -s j -l jobs -d 'number
 complete -c x.py -n "__fish_x.py_using_subcommand clean" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand clean" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand clean" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand clean" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand clean" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand clean" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand clean" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -463,7 +452,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand dist" -s j -l jobs -d 'number
 complete -c x.py -n "__fish_x.py_using_subcommand dist" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand dist" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand dist" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand dist" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand dist" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand dist" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand dist" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -497,7 +485,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand install" -s j -l jobs -d 'numb
 complete -c x.py -n "__fish_x.py_using_subcommand install" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand install" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand install" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand install" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand install" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand install" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand install" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -532,7 +519,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand run" -s j -l jobs -d 'number o
 complete -c x.py -n "__fish_x.py_using_subcommand run" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand run" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand run" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand run" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand run" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand run" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand run" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -566,7 +552,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand setup" -s j -l jobs -d 'number
 complete -c x.py -n "__fish_x.py_using_subcommand setup" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand setup" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand setup" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand setup" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand setup" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand setup" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand setup" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -600,7 +585,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand suggest" -s j -l jobs -d 'numb
 complete -c x.py -n "__fish_x.py_using_subcommand suggest" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand suggest" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand suggest" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand suggest" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand suggest" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand suggest" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand suggest" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -636,7 +620,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand vendor" -s j -l jobs -d 'numbe
 complete -c x.py -n "__fish_x.py_using_subcommand vendor" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand vendor" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand vendor" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand vendor" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand vendor" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand vendor" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand vendor" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
@@ -671,7 +654,6 @@ complete -c x.py -n "__fish_x.py_using_subcommand perf" -s j -l jobs -d 'number
 complete -c x.py -n "__fish_x.py_using_subcommand perf" -l warnings -d 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour' -r -f -a "{deny\t'',warn\t'',default\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand perf" -l error-format -d 'rustc error format' -r -f
 complete -c x.py -n "__fish_x.py_using_subcommand perf" -l color -d 'whether to use color in cargo and rustc output' -r -f -a "{always\t'',never\t'',auto\t''}"
-complete -c x.py -n "__fish_x.py_using_subcommand perf" -l llvm-skip-rebuild -d 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml' -r -f -a "{true\t'',false\t''}"
 complete -c x.py -n "__fish_x.py_using_subcommand perf" -l rust-profile-generate -d 'generate PGO profile with rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand perf" -l rust-profile-use -d 'use PGO profile for rustc build' -r -F
 complete -c x.py -n "__fish_x.py_using_subcommand perf" -l llvm-profile-use -d 'use PGO profile for LLVM build' -r -F
diff --git a/src/etc/completions/x.py.ps1 b/src/etc/completions/x.py.ps1
index 240de32451d..afbfb055abd 100644
--- a/src/etc/completions/x.py.ps1
+++ b/src/etc/completions/x.py.ps1
@@ -39,7 +39,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -97,7 +96,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -138,7 +136,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -184,7 +181,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -228,7 +224,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -269,7 +264,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -312,7 +306,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -361,7 +354,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -410,7 +402,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -455,7 +446,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -496,7 +486,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -538,7 +527,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -579,7 +567,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -621,7 +608,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -662,7 +648,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -703,7 +688,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -746,7 +730,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
@@ -788,7 +771,6 @@ Register-ArgumentCompleter -Native -CommandName 'x.py' -ScriptBlock {
             [CompletionResult]::new('--warnings', '--warnings', [CompletionResultType]::ParameterName, 'if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour')
             [CompletionResult]::new('--error-format', '--error-format', [CompletionResultType]::ParameterName, 'rustc error format')
             [CompletionResult]::new('--color', '--color', [CompletionResultType]::ParameterName, 'whether to use color in cargo and rustc output')
-            [CompletionResult]::new('--llvm-skip-rebuild', '--llvm-skip-rebuild', [CompletionResultType]::ParameterName, 'whether rebuilding llvm should be skipped, overriding `skip-rebuld` in config.toml')
             [CompletionResult]::new('--rust-profile-generate', '--rust-profile-generate', [CompletionResultType]::ParameterName, 'generate PGO profile with rustc build')
             [CompletionResult]::new('--rust-profile-use', '--rust-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for rustc build')
             [CompletionResult]::new('--llvm-profile-use', '--llvm-profile-use', [CompletionResultType]::ParameterName, 'use PGO profile for LLVM build')
diff --git a/src/etc/completions/x.py.sh b/src/etc/completions/x.py.sh
index b1730e5c6d8..2aa0d9f69cc 100644
--- a/src/etc/completions/x.py.sh
+++ b/src/etc/completions/x.py.sh
@@ -70,7 +70,7 @@ _x.py() {
 
     case "${cmd}" in
         x.py)
-            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]... build check clippy fix fmt doc test miri bench clean dist install run setup suggest vendor perf"
+            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]... build check clippy fix fmt doc test miri bench clean dist install run setup suggest vendor perf"
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 1 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -195,10 +195,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -263,7 +259,7 @@ _x.py() {
             return 0
             ;;
         x.py__bench)
-            opts="-v -i -j -h --test-args --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --test-args --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -392,10 +388,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -460,7 +452,7 @@ _x.py() {
             return 0
             ;;
         x.py__build)
-            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -585,10 +577,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -653,7 +641,7 @@ _x.py() {
             return 0
             ;;
         x.py__check)
-            opts="-v -i -j -h --all-targets --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --all-targets --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -778,10 +766,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -846,7 +830,7 @@ _x.py() {
             return 0
             ;;
         x.py__clean)
-            opts="-v -i -j -h --all --stage --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --all --stage --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -968,10 +952,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -1036,7 +1016,7 @@ _x.py() {
             return 0
             ;;
         x.py__clippy)
-            opts="-A -D -W -F -v -i -j -h --fix --allow-dirty --allow-staged --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-A -D -W -F -v -i -j -h --fix --allow-dirty --allow-staged --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -1177,10 +1157,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -1245,7 +1221,7 @@ _x.py() {
             return 0
             ;;
         x.py__dist)
-            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -1370,10 +1346,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -1438,7 +1410,7 @@ _x.py() {
             return 0
             ;;
         x.py__doc)
-            opts="-v -i -j -h --open --json --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --open --json --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -1563,10 +1535,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -1631,7 +1599,7 @@ _x.py() {
             return 0
             ;;
         x.py__fix)
-            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -1756,10 +1724,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -1824,7 +1788,7 @@ _x.py() {
             return 0
             ;;
         x.py__fmt)
-            opts="-v -i -j -h --check --all --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --check --all --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -1949,10 +1913,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -2017,7 +1977,7 @@ _x.py() {
             return 0
             ;;
         x.py__install)
-            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -2142,10 +2102,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -2210,7 +2166,7 @@ _x.py() {
             return 0
             ;;
         x.py__miri)
-            opts="-v -i -j -h --no-fail-fast --test-args --no-doc --doc --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --no-fail-fast --test-args --no-doc --doc --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -2339,10 +2295,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -2407,7 +2359,7 @@ _x.py() {
             return 0
             ;;
         x.py__perf)
-            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -2532,10 +2484,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -2600,7 +2548,7 @@ _x.py() {
             return 0
             ;;
         x.py__run)
-            opts="-v -i -j -h --args --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --args --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -2729,10 +2677,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -2797,7 +2741,7 @@ _x.py() {
             return 0
             ;;
         x.py__setup)
-            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [<PROFILE>|hook|vscode|link] [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [<PROFILE>|hook|vscode|link] [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -2922,10 +2866,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -2990,7 +2930,7 @@ _x.py() {
             return 0
             ;;
         x.py__suggest)
-            opts="-v -i -j -h --run --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --run --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -3115,10 +3055,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -3183,7 +3119,7 @@ _x.py() {
             return 0
             ;;
         x.py__test)
-            opts="-v -i -j -h --no-fail-fast --test-args --compiletest-rustc-args --no-doc --doc --bless --extra-checks --force-rerun --only-modified --compare-mode --pass --run --rustfix-coverage --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --no-fail-fast --test-args --compiletest-rustc-args --no-doc --doc --bless --extra-checks --force-rerun --only-modified --compare-mode --pass --run --rustfix-coverage --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -3332,10 +3268,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
@@ -3400,7 +3332,7 @@ _x.py() {
             return 0
             ;;
         x.py__vendor)
-            opts="-v -i -j -h --sync --versioned-dirs --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --llvm-skip-rebuild --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
+            opts="-v -i -j -h --sync --versioned-dirs --verbose --incremental --config --build-dir --build --host --target --exclude --skip --include-default-paths --rustc-error-format --on-fail --dry-run --dump-bootstrap-shims --stage --keep-stage --keep-stage-std --src --jobs --warnings --error-format --json-output --color --bypass-bootstrap-lock --rust-profile-generate --rust-profile-use --llvm-profile-use --llvm-profile-generate --enable-bolt-settings --skip-stage0-validation --reproducible-artifact --set --help [PATHS]... [ARGS]..."
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -3529,10 +3461,6 @@ _x.py() {
                     COMPREPLY=($(compgen -W "always never auto" -- "${cur}"))
                     return 0
                     ;;
-                --llvm-skip-rebuild)
-                    COMPREPLY=($(compgen -W "true false" -- "${cur}"))
-                    return 0
-                    ;;
                 --rust-profile-generate)
                     local oldifs
                     if [ -n "${IFS+x}" ]; then
diff --git a/src/etc/completions/x.py.zsh b/src/etc/completions/x.py.zsh
index ae076b88345..c47937a3b73 100644
--- a/src/etc/completions/x.py.zsh
+++ b/src/etc/completions/x.py.zsh
@@ -33,7 +33,6 @@ _x.py() {
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -84,7 +83,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -127,7 +125,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -175,7 +172,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -221,7 +217,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -264,7 +259,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -309,7 +303,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -360,7 +353,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -411,7 +403,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -458,7 +449,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -501,7 +491,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -545,7 +534,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -588,7 +576,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -632,7 +619,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -675,7 +661,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -719,7 +704,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -764,7 +748,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
@@ -808,7 +791,6 @@ _arguments "${_arguments_options[@]}" : \
 '--warnings=[if value is deny, will deny warnings if value is warn, will emit warnings otherwise, use the default configured behaviour]:deny|warn:(deny warn default)' \
 '--error-format=[rustc error format]:FORMAT:( )' \
 '--color=[whether to use color in cargo and rustc output]:STYLE:(always never auto)' \
-'--llvm-skip-rebuild=[whether rebuilding llvm should be skipped, overriding \`skip-rebuld\` in config.toml]:VALUE:(true false)' \
 '--rust-profile-generate=[generate PGO profile with rustc build]:PROFILE:_files' \
 '--rust-profile-use=[use PGO profile for rustc build]:PROFILE:_files' \
 '--llvm-profile-use=[use PGO profile for LLVM build]:PROFILE:_files' \
diff --git a/src/librustdoc/html/highlight.rs b/src/librustdoc/html/highlight.rs
index 29b4889a6ab..e728da67dc2 100644
--- a/src/librustdoc/html/highlight.rs
+++ b/src/librustdoc/html/highlight.rs
@@ -879,7 +879,9 @@ impl<'src> Classifier<'src> {
             | TokenKind::UnknownPrefix
             | TokenKind::InvalidPrefix
             | TokenKind::InvalidIdent => Class::Ident(self.new_span(before, text)),
-            TokenKind::Lifetime { .. } => Class::Lifetime,
+            TokenKind::Lifetime { .. }
+            | TokenKind::RawLifetime
+            | TokenKind::UnknownPrefixLifetime => Class::Lifetime,
             TokenKind::Eof => panic!("Eof in advance"),
         };
         // Anything that didn't return above is the simple case where we the
diff --git a/src/librustdoc/html/static/js/externs.js b/src/librustdoc/html/static/js/externs.js
index 6fd60d6cc34..3d3e0a8f838 100644
--- a/src/librustdoc/html/static/js/externs.js
+++ b/src/librustdoc/html/static/js/externs.js
@@ -41,6 +41,7 @@ let ParserState;
  *     foundElems: number,
  *     totalElems: number,
  *     literalSearch: boolean,
+ *     hasReturnArrow: boolean,
  *     corrections: Array<{from: string, to: integer}> | null,
  *     typeFingerprint: Uint32Array,
  *     error: Array<string> | null,
diff --git a/src/librustdoc/html/static/js/search.js b/src/librustdoc/html/static/js/search.js
index 6f575e60ed4..4da0bbc787d 100644
--- a/src/librustdoc/html/static/js/search.js
+++ b/src/librustdoc/html/static/js/search.js
@@ -657,7 +657,7 @@ function createQueryElement(query, parserState, name, generics, isInGenerics) {
     }
     const typeFilter = parserState.typeFilter;
     parserState.typeFilter = null;
-    if (name === "!") {
+    if (name.trim() === "!") {
         if (typeFilter !== null && typeFilter !== "primitive") {
             throw [
                 "Invalid search type: primitive never type ",
@@ -1795,6 +1795,7 @@ class DocSearch {
                 // Total number of elements (includes generics).
                 totalElems: 0,
                 literalSearch: false,
+                hasReturnArrow: false,
                 error: null,
                 correction: null,
                 proposeCorrectionFrom: null,
@@ -1823,6 +1824,7 @@ class DocSearch {
                         continue;
                     } else if (c === "-" || c === ">") {
                         if (isReturnArrow(parserState)) {
+                            query.hasReturnArrow = true;
                             break;
                         }
                         throw ["Unexpected ", c, " (did you mean ", "->", "?)"];
@@ -1889,9 +1891,7 @@ class DocSearch {
                     // Get returned elements.
                     getItemsBefore(query, parserState, query.returned, "");
                     // Nothing can come afterward!
-                    if (query.returned.length === 0) {
-                        throw ["Expected at least one item after ", "->"];
-                    }
+                    query.hasReturnArrow = true;
                     break;
                 } else {
                     parserState.pos += 1;
@@ -3249,7 +3249,7 @@ class DocSearch {
                 this.buildFunctionTypeFingerprint(elem, parsedQuery.typeFingerprint, fps);
             }
 
-            if (parsedQuery.foundElems === 1 && parsedQuery.returned.length === 0) {
+            if (parsedQuery.foundElems === 1 && !parsedQuery.hasReturnArrow) {
                 if (parsedQuery.elems.length === 1) {
                     const elem = parsedQuery.elems[0];
                     const length = this.searchIndex.length;
diff --git a/src/tools/clippy/clippy_lints/src/transmute/mod.rs b/src/tools/clippy/clippy_lints/src/transmute/mod.rs
index 373bf61d8ff..a2ae36cc484 100644
--- a/src/tools/clippy/clippy_lints/src/transmute/mod.rs
+++ b/src/tools/clippy/clippy_lints/src/transmute/mod.rs
@@ -619,10 +619,10 @@ impl<'tcx> LateLintPass<'tcx> for Transmute {
                 | transmute_ref_to_ref::check(cx, e, from_ty, to_ty, arg, const_context)
                 | transmute_ptr_to_ptr::check(cx, e, from_ty, to_ty, arg, &self.msrv)
                 | transmute_int_to_bool::check(cx, e, from_ty, to_ty, arg)
-                | transmute_int_to_float::check(cx, e, from_ty, to_ty, arg, const_context)
+                | transmute_int_to_float::check(cx, e, from_ty, to_ty, arg)
                 | transmute_int_to_non_zero::check(cx, e, from_ty, to_ty, arg)
-                | transmute_float_to_int::check(cx, e, from_ty, to_ty, arg, const_context)
-                | transmute_num_to_bytes::check(cx, e, from_ty, to_ty, arg, const_context)
+                | transmute_float_to_int::check(cx, e, from_ty, to_ty, arg)
+                | transmute_num_to_bytes::check(cx, e, from_ty, to_ty, arg)
                 | (unsound_collection_transmute::check(cx, e, from_ty, to_ty)
                     || transmute_undefined_repr::check(cx, e, from_ty, to_ty))
                 | (eager_transmute::check(cx, e, arg, from_ty, to_ty));
diff --git a/src/tools/clippy/clippy_lints/src/transmute/transmute_float_to_int.rs b/src/tools/clippy/clippy_lints/src/transmute/transmute_float_to_int.rs
index ab3bb5e1062..cb46109c27e 100644
--- a/src/tools/clippy/clippy_lints/src/transmute/transmute_float_to_int.rs
+++ b/src/tools/clippy/clippy_lints/src/transmute/transmute_float_to_int.rs
@@ -15,10 +15,9 @@ pub(super) fn check<'tcx>(
     from_ty: Ty<'tcx>,
     to_ty: Ty<'tcx>,
     mut arg: &'tcx Expr<'_>,
-    const_context: bool,
 ) -> bool {
     match (&from_ty.kind(), &to_ty.kind()) {
-        (ty::Float(float_ty), ty::Int(_) | ty::Uint(_)) if !const_context => {
+        (ty::Float(float_ty), ty::Int(_) | ty::Uint(_)) => {
             span_lint_and_then(
                 cx,
                 TRANSMUTE_FLOAT_TO_INT,
diff --git a/src/tools/clippy/clippy_lints/src/transmute/transmute_int_to_float.rs b/src/tools/clippy/clippy_lints/src/transmute/transmute_int_to_float.rs
index d51888e3097..e00fb90c307 100644
--- a/src/tools/clippy/clippy_lints/src/transmute/transmute_int_to_float.rs
+++ b/src/tools/clippy/clippy_lints/src/transmute/transmute_int_to_float.rs
@@ -14,10 +14,9 @@ pub(super) fn check<'tcx>(
     from_ty: Ty<'tcx>,
     to_ty: Ty<'tcx>,
     arg: &'tcx Expr<'_>,
-    const_context: bool,
 ) -> bool {
     match (&from_ty.kind(), &to_ty.kind()) {
-        (ty::Int(_) | ty::Uint(_), ty::Float(_)) if !const_context => {
+        (ty::Int(_) | ty::Uint(_), ty::Float(_)) => {
             span_lint_and_then(
                 cx,
                 TRANSMUTE_INT_TO_FLOAT,
diff --git a/src/tools/clippy/clippy_lints/src/transmute/transmute_num_to_bytes.rs b/src/tools/clippy/clippy_lints/src/transmute/transmute_num_to_bytes.rs
index 88b0ac5a368..362f2bb6960 100644
--- a/src/tools/clippy/clippy_lints/src/transmute/transmute_num_to_bytes.rs
+++ b/src/tools/clippy/clippy_lints/src/transmute/transmute_num_to_bytes.rs
@@ -14,18 +14,12 @@ pub(super) fn check<'tcx>(
     from_ty: Ty<'tcx>,
     to_ty: Ty<'tcx>,
     arg: &'tcx Expr<'_>,
-    const_context: bool,
 ) -> bool {
     match (&from_ty.kind(), &to_ty.kind()) {
         (ty::Int(_) | ty::Uint(_) | ty::Float(_), ty::Array(arr_ty, _)) => {
             if !matches!(arr_ty.kind(), ty::Uint(UintTy::U8)) {
                 return false;
             }
-            if matches!(from_ty.kind(), ty::Float(_)) && const_context {
-                // TODO: Remove when const_float_bits_conv is stabilized
-                // rust#72447
-                return false;
-            }
 
             span_lint_and_then(
                 cx,
diff --git a/src/tools/clippy/tests/ui/transmute.rs b/src/tools/clippy/tests/ui/transmute.rs
index 46629526367..eeea3f080b1 100644
--- a/src/tools/clippy/tests/ui/transmute.rs
+++ b/src/tools/clippy/tests/ui/transmute.rs
@@ -140,24 +140,32 @@ mod int_to_float {
 
     mod issue_5747 {
         const VALUE16: f16 = unsafe { std::mem::transmute(0_u16) };
+        //~^ ERROR: transmute from a `u16` to a `f16`
         const VALUE32: f32 = unsafe { std::mem::transmute(0_u32) };
+        //~^ ERROR: transmute from a `u32` to a `f32`
         const VALUE64: f64 = unsafe { std::mem::transmute(0_i64) };
+        //~^ ERROR: transmute from a `i64` to a `f64`
         const VALUE128: f128 = unsafe { std::mem::transmute(0_i128) };
+        //~^ ERROR: transmute from a `i128` to a `f128`
 
         const fn from_bits_16(v: i16) -> f16 {
             unsafe { std::mem::transmute(v) }
+            //~^ ERROR: transmute from a `i16` to a `f16`
         }
 
         const fn from_bits_32(v: i32) -> f32 {
             unsafe { std::mem::transmute(v) }
+            //~^ ERROR: transmute from a `i32` to a `f32`
         }
 
         const fn from_bits_64(v: u64) -> f64 {
             unsafe { std::mem::transmute(v) }
+            //~^ ERROR: transmute from a `u64` to a `f64`
         }
 
         const fn from_bits_128(v: u128) -> f128 {
             unsafe { std::mem::transmute(v) }
+            //~^ ERROR: transmute from a `u128` to a `f128`
         }
     }
 }
@@ -205,9 +213,13 @@ mod num_to_bytes {
             //~^ ERROR: transmute from a `i128` to a `[u8; 16]`
 
             let _: [u8; 2] = std::mem::transmute(0.0f16);
+            //~^ ERROR: transmute from a `f16` to a `[u8; 2]`
             let _: [u8; 4] = std::mem::transmute(0.0f32);
+            //~^ ERROR: transmute from a `f32` to a `[u8; 4]`
             let _: [u8; 8] = std::mem::transmute(0.0f64);
+            //~^ ERROR: transmute from a `f64` to a `[u8; 8]`
             let _: [u8; 16] = std::mem::transmute(0.0f128);
+            //~^ ERROR: transmute from a `f128` to a `[u8; 16]`
         }
     }
 }
diff --git a/src/tools/clippy/tests/ui/transmute.stderr b/src/tools/clippy/tests/ui/transmute.stderr
index 0072f62962a..41a10f381dc 100644
--- a/src/tools/clippy/tests/ui/transmute.stderr
+++ b/src/tools/clippy/tests/ui/transmute.stderr
@@ -148,8 +148,56 @@ error: transmute from a `i128` to a `f128`
 LL |         let _: f128 = unsafe { std::mem::transmute(0_i128) };
    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f128::from_bits(0_i128 as u128)`
 
+error: transmute from a `u16` to a `f16`
+  --> tests/ui/transmute.rs:142:39
+   |
+LL |         const VALUE16: f16 = unsafe { std::mem::transmute(0_u16) };
+   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f16::from_bits(0_u16)`
+
+error: transmute from a `u32` to a `f32`
+  --> tests/ui/transmute.rs:144:39
+   |
+LL |         const VALUE32: f32 = unsafe { std::mem::transmute(0_u32) };
+   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(0_u32)`
+
+error: transmute from a `i64` to a `f64`
+  --> tests/ui/transmute.rs:146:39
+   |
+LL |         const VALUE64: f64 = unsafe { std::mem::transmute(0_i64) };
+   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(0_i64 as u64)`
+
+error: transmute from a `i128` to a `f128`
+  --> tests/ui/transmute.rs:148:41
+   |
+LL |         const VALUE128: f128 = unsafe { std::mem::transmute(0_i128) };
+   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f128::from_bits(0_i128 as u128)`
+
+error: transmute from a `i16` to a `f16`
+  --> tests/ui/transmute.rs:152:22
+   |
+LL |             unsafe { std::mem::transmute(v) }
+   |                      ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f16::from_bits(v as u16)`
+
+error: transmute from a `i32` to a `f32`
+  --> tests/ui/transmute.rs:157:22
+   |
+LL |             unsafe { std::mem::transmute(v) }
+   |                      ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f32::from_bits(v as u32)`
+
+error: transmute from a `u64` to a `f64`
+  --> tests/ui/transmute.rs:162:22
+   |
+LL |             unsafe { std::mem::transmute(v) }
+   |                      ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f64::from_bits(v)`
+
+error: transmute from a `u128` to a `f128`
+  --> tests/ui/transmute.rs:167:22
+   |
+LL |             unsafe { std::mem::transmute(v) }
+   |                      ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `f128::from_bits(v)`
+
 error: transmute from a `u8` to a `[u8; 1]`
-  --> tests/ui/transmute.rs:168:30
+  --> tests/ui/transmute.rs:176:30
    |
 LL |             let _: [u8; 1] = std::mem::transmute(0u8);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u8.to_ne_bytes()`
@@ -158,97 +206,121 @@ LL |             let _: [u8; 1] = std::mem::transmute(0u8);
    = help: to override `-D warnings` add `#[allow(clippy::transmute_num_to_bytes)]`
 
 error: transmute from a `u32` to a `[u8; 4]`
-  --> tests/ui/transmute.rs:171:30
+  --> tests/ui/transmute.rs:179:30
    |
 LL |             let _: [u8; 4] = std::mem::transmute(0u32);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u32.to_ne_bytes()`
 
 error: transmute from a `u128` to a `[u8; 16]`
-  --> tests/ui/transmute.rs:173:31
+  --> tests/ui/transmute.rs:181:31
    |
 LL |             let _: [u8; 16] = std::mem::transmute(0u128);
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u128.to_ne_bytes()`
 
 error: transmute from a `i8` to a `[u8; 1]`
-  --> tests/ui/transmute.rs:175:30
+  --> tests/ui/transmute.rs:183:30
    |
 LL |             let _: [u8; 1] = std::mem::transmute(0i8);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i8.to_ne_bytes()`
 
 error: transmute from a `i32` to a `[u8; 4]`
-  --> tests/ui/transmute.rs:177:30
+  --> tests/ui/transmute.rs:185:30
    |
 LL |             let _: [u8; 4] = std::mem::transmute(0i32);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i32.to_ne_bytes()`
 
 error: transmute from a `i128` to a `[u8; 16]`
-  --> tests/ui/transmute.rs:179:31
+  --> tests/ui/transmute.rs:187:31
    |
 LL |             let _: [u8; 16] = std::mem::transmute(0i128);
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i128.to_ne_bytes()`
 
 error: transmute from a `f16` to a `[u8; 2]`
-  --> tests/ui/transmute.rs:182:30
+  --> tests/ui/transmute.rs:190:30
    |
 LL |             let _: [u8; 2] = std::mem::transmute(0.0f16);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f16.to_ne_bytes()`
 
 error: transmute from a `f32` to a `[u8; 4]`
-  --> tests/ui/transmute.rs:184:30
+  --> tests/ui/transmute.rs:192:30
    |
 LL |             let _: [u8; 4] = std::mem::transmute(0.0f32);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f32.to_ne_bytes()`
 
 error: transmute from a `f64` to a `[u8; 8]`
-  --> tests/ui/transmute.rs:186:30
+  --> tests/ui/transmute.rs:194:30
    |
 LL |             let _: [u8; 8] = std::mem::transmute(0.0f64);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f64.to_ne_bytes()`
 
 error: transmute from a `f128` to a `[u8; 16]`
-  --> tests/ui/transmute.rs:188:31
+  --> tests/ui/transmute.rs:196:31
    |
 LL |             let _: [u8; 16] = std::mem::transmute(0.0f128);
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f128.to_ne_bytes()`
 
 error: transmute from a `u8` to a `[u8; 1]`
-  --> tests/ui/transmute.rs:194:30
+  --> tests/ui/transmute.rs:202:30
    |
 LL |             let _: [u8; 1] = std::mem::transmute(0u8);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u8.to_ne_bytes()`
 
 error: transmute from a `u32` to a `[u8; 4]`
-  --> tests/ui/transmute.rs:196:30
+  --> tests/ui/transmute.rs:204:30
    |
 LL |             let _: [u8; 4] = std::mem::transmute(0u32);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u32.to_ne_bytes()`
 
 error: transmute from a `u128` to a `[u8; 16]`
-  --> tests/ui/transmute.rs:198:31
+  --> tests/ui/transmute.rs:206:31
    |
 LL |             let _: [u8; 16] = std::mem::transmute(0u128);
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0u128.to_ne_bytes()`
 
 error: transmute from a `i8` to a `[u8; 1]`
-  --> tests/ui/transmute.rs:200:30
+  --> tests/ui/transmute.rs:208:30
    |
 LL |             let _: [u8; 1] = std::mem::transmute(0i8);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i8.to_ne_bytes()`
 
 error: transmute from a `i32` to a `[u8; 4]`
-  --> tests/ui/transmute.rs:202:30
+  --> tests/ui/transmute.rs:210:30
    |
 LL |             let _: [u8; 4] = std::mem::transmute(0i32);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i32.to_ne_bytes()`
 
 error: transmute from a `i128` to a `[u8; 16]`
-  --> tests/ui/transmute.rs:204:31
+  --> tests/ui/transmute.rs:212:31
    |
 LL |             let _: [u8; 16] = std::mem::transmute(0i128);
    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0i128.to_ne_bytes()`
 
+error: transmute from a `f16` to a `[u8; 2]`
+  --> tests/ui/transmute.rs:215:30
+   |
+LL |             let _: [u8; 2] = std::mem::transmute(0.0f16);
+   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f16.to_ne_bytes()`
+
+error: transmute from a `f32` to a `[u8; 4]`
+  --> tests/ui/transmute.rs:217:30
+   |
+LL |             let _: [u8; 4] = std::mem::transmute(0.0f32);
+   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f32.to_ne_bytes()`
+
+error: transmute from a `f64` to a `[u8; 8]`
+  --> tests/ui/transmute.rs:219:30
+   |
+LL |             let _: [u8; 8] = std::mem::transmute(0.0f64);
+   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f64.to_ne_bytes()`
+
+error: transmute from a `f128` to a `[u8; 16]`
+  --> tests/ui/transmute.rs:221:31
+   |
+LL |             let _: [u8; 16] = std::mem::transmute(0.0f128);
+   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `to_ne_bytes()`: `0.0f128.to_ne_bytes()`
+
 error: transmute from a `&[u8]` to a `&str`
-  --> tests/ui/transmute.rs:218:28
+  --> tests/ui/transmute.rs:230:28
    |
 LL |     let _: &str = unsafe { std::mem::transmute(B) };
    |                            ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8(B).unwrap()`
@@ -257,16 +329,16 @@ LL |     let _: &str = unsafe { std::mem::transmute(B) };
    = help: to override `-D warnings` add `#[allow(clippy::transmute_bytes_to_str)]`
 
 error: transmute from a `&mut [u8]` to a `&mut str`
-  --> tests/ui/transmute.rs:221:32
+  --> tests/ui/transmute.rs:233:32
    |
 LL |     let _: &mut str = unsafe { std::mem::transmute(mb) };
    |                                ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_mut(mb).unwrap()`
 
 error: transmute from a `&[u8]` to a `&str`
-  --> tests/ui/transmute.rs:223:30
+  --> tests/ui/transmute.rs:235:30
    |
 LL |     const _: &str = unsafe { std::mem::transmute(B) };
    |                              ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::str::from_utf8_unchecked(B)`
 
-error: aborting due to 42 previous errors
+error: aborting due to 54 previous errors
 
diff --git a/src/tools/clippy/tests/ui/transmute_float_to_int.fixed b/src/tools/clippy/tests/ui/transmute_float_to_int.fixed
index 4361a7407d1..83814ca43b9 100644
--- a/src/tools/clippy/tests/ui/transmute_float_to_int.fixed
+++ b/src/tools/clippy/tests/ui/transmute_float_to_int.fixed
@@ -1,7 +1,7 @@
 #![warn(clippy::transmute_float_to_int)]
 #![allow(clippy::missing_transmute_annotations)]
-#![feature(f128)]
-#![feature(f16)]
+#![feature(f128, f128_const)]
+#![feature(f16, f16_const)]
 
 fn float_to_int() {
     let _: u32 = unsafe { 1f32.to_bits() };
@@ -20,25 +20,33 @@ fn float_to_int() {
 }
 
 mod issue_5747 {
-    const VALUE16: i16 = unsafe { std::mem::transmute(1f16) };
-    const VALUE32: i32 = unsafe { std::mem::transmute(1f32) };
-    const VALUE64: u64 = unsafe { std::mem::transmute(1f64) };
-    const VALUE128: u128 = unsafe { std::mem::transmute(1f128) };
+    const VALUE16: i16 = unsafe { 1f16.to_bits() as i16 };
+    //~^ ERROR: transmute from a `f16` to a `i16`
+    const VALUE32: i32 = unsafe { 1f32.to_bits() as i32 };
+    //~^ ERROR: transmute from a `f32` to a `i32`
+    const VALUE64: u64 = unsafe { 1f64.to_bits() };
+    //~^ ERROR: transmute from a `f64` to a `u64`
+    const VALUE128: u128 = unsafe { 1f128.to_bits() };
+    //~^ ERROR: transmute from a `f128` to a `u128`
 
     const fn to_bits_16(v: f16) -> u16 {
-        unsafe { std::mem::transmute(v) }
+        unsafe { v.to_bits() }
+        //~^ ERROR: transmute from a `f16` to a `u16`
     }
 
     const fn to_bits_32(v: f32) -> u32 {
-        unsafe { std::mem::transmute(v) }
+        unsafe { v.to_bits() }
+        //~^ ERROR: transmute from a `f32` to a `u32`
     }
 
     const fn to_bits_64(v: f64) -> i64 {
-        unsafe { std::mem::transmute(v) }
+        unsafe { v.to_bits() as i64 }
+        //~^ ERROR: transmute from a `f64` to a `i64`
     }
 
     const fn to_bits_128(v: f128) -> i128 {
-        unsafe { std::mem::transmute(v) }
+        unsafe { v.to_bits() as i128 }
+        //~^ ERROR: transmute from a `f128` to a `i128`
     }
 }
 
diff --git a/src/tools/clippy/tests/ui/transmute_float_to_int.rs b/src/tools/clippy/tests/ui/transmute_float_to_int.rs
index 363ce0bcb16..64d6e917203 100644
--- a/src/tools/clippy/tests/ui/transmute_float_to_int.rs
+++ b/src/tools/clippy/tests/ui/transmute_float_to_int.rs
@@ -1,7 +1,7 @@
 #![warn(clippy::transmute_float_to_int)]
 #![allow(clippy::missing_transmute_annotations)]
-#![feature(f128)]
-#![feature(f16)]
+#![feature(f128, f128_const)]
+#![feature(f16, f16_const)]
 
 fn float_to_int() {
     let _: u32 = unsafe { std::mem::transmute(1f32) };
@@ -21,24 +21,32 @@ fn float_to_int() {
 
 mod issue_5747 {
     const VALUE16: i16 = unsafe { std::mem::transmute(1f16) };
+    //~^ ERROR: transmute from a `f16` to a `i16`
     const VALUE32: i32 = unsafe { std::mem::transmute(1f32) };
+    //~^ ERROR: transmute from a `f32` to a `i32`
     const VALUE64: u64 = unsafe { std::mem::transmute(1f64) };
+    //~^ ERROR: transmute from a `f64` to a `u64`
     const VALUE128: u128 = unsafe { std::mem::transmute(1f128) };
+    //~^ ERROR: transmute from a `f128` to a `u128`
 
     const fn to_bits_16(v: f16) -> u16 {
         unsafe { std::mem::transmute(v) }
+        //~^ ERROR: transmute from a `f16` to a `u16`
     }
 
     const fn to_bits_32(v: f32) -> u32 {
         unsafe { std::mem::transmute(v) }
+        //~^ ERROR: transmute from a `f32` to a `u32`
     }
 
     const fn to_bits_64(v: f64) -> i64 {
         unsafe { std::mem::transmute(v) }
+        //~^ ERROR: transmute from a `f64` to a `i64`
     }
 
     const fn to_bits_128(v: f128) -> i128 {
         unsafe { std::mem::transmute(v) }
+        //~^ ERROR: transmute from a `f128` to a `i128`
     }
 }
 
diff --git a/src/tools/clippy/tests/ui/transmute_float_to_int.stderr b/src/tools/clippy/tests/ui/transmute_float_to_int.stderr
index 9cac75f72cd..0cabab58ab0 100644
--- a/src/tools/clippy/tests/ui/transmute_float_to_int.stderr
+++ b/src/tools/clippy/tests/ui/transmute_float_to_int.stderr
@@ -37,5 +37,53 @@ error: transmute from a `f64` to a `u64`
 LL |     let _: u64 = unsafe { std::mem::transmute(-1.0) };
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `(-1.0f64).to_bits()`
 
-error: aborting due to 6 previous errors
+error: transmute from a `f16` to a `i16`
+  --> tests/ui/transmute_float_to_int.rs:23:35
+   |
+LL |     const VALUE16: i16 = unsafe { std::mem::transmute(1f16) };
+   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `1f16.to_bits() as i16`
+
+error: transmute from a `f32` to a `i32`
+  --> tests/ui/transmute_float_to_int.rs:25:35
+   |
+LL |     const VALUE32: i32 = unsafe { std::mem::transmute(1f32) };
+   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `1f32.to_bits() as i32`
+
+error: transmute from a `f64` to a `u64`
+  --> tests/ui/transmute_float_to_int.rs:27:35
+   |
+LL |     const VALUE64: u64 = unsafe { std::mem::transmute(1f64) };
+   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `1f64.to_bits()`
+
+error: transmute from a `f128` to a `u128`
+  --> tests/ui/transmute_float_to_int.rs:29:37
+   |
+LL |     const VALUE128: u128 = unsafe { std::mem::transmute(1f128) };
+   |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `1f128.to_bits()`
+
+error: transmute from a `f16` to a `u16`
+  --> tests/ui/transmute_float_to_int.rs:33:18
+   |
+LL |         unsafe { std::mem::transmute(v) }
+   |                  ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `v.to_bits()`
+
+error: transmute from a `f32` to a `u32`
+  --> tests/ui/transmute_float_to_int.rs:38:18
+   |
+LL |         unsafe { std::mem::transmute(v) }
+   |                  ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `v.to_bits()`
+
+error: transmute from a `f64` to a `i64`
+  --> tests/ui/transmute_float_to_int.rs:43:18
+   |
+LL |         unsafe { std::mem::transmute(v) }
+   |                  ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `v.to_bits() as i64`
+
+error: transmute from a `f128` to a `i128`
+  --> tests/ui/transmute_float_to_int.rs:48:18
+   |
+LL |         unsafe { std::mem::transmute(v) }
+   |                  ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `v.to_bits() as i128`
+
+error: aborting due to 14 previous errors
 
diff --git a/src/tools/rust-analyzer/crates/parser/src/lexed_str.rs b/src/tools/rust-analyzer/crates/parser/src/lexed_str.rs
index ff924830ae0..3590486bd29 100644
--- a/src/tools/rust-analyzer/crates/parser/src/lexed_str.rs
+++ b/src/tools/rust-analyzer/crates/parser/src/lexed_str.rs
@@ -198,6 +198,13 @@ impl<'a> Converter<'a> {
                     }
                     LIFETIME_IDENT
                 }
+                rustc_lexer::TokenKind::UnknownPrefixLifetime => {
+                    err = "Unknown lifetime prefix";
+                    LIFETIME_IDENT
+                }
+                rustc_lexer::TokenKind::RawLifetime => {
+                    LIFETIME_IDENT
+                }
 
                 rustc_lexer::TokenKind::Semi => T![;],
                 rustc_lexer::TokenKind::Comma => T![,],
diff --git a/src/tools/rustfmt/src/expr.rs b/src/tools/rustfmt/src/expr.rs
index 6ba5217bc92..75c75c523b0 100644
--- a/src/tools/rustfmt/src/expr.rs
+++ b/src/tools/rustfmt/src/expr.rs
@@ -462,7 +462,7 @@ fn rewrite_empty_block(
         return None;
     }
 
-    let label_str = rewrite_label(label);
+    let label_str = rewrite_label(context, label);
     if attrs.map_or(false, |a| !inner_attributes(a).is_empty()) {
         return None;
     }
@@ -527,7 +527,7 @@ fn rewrite_single_line_block(
     if let Some(block_expr) = stmt::Stmt::from_simple_block(context, block, attrs) {
         let expr_shape = shape.offset_left(last_line_width(prefix))?;
         let expr_str = block_expr.rewrite(context, expr_shape)?;
-        let label_str = rewrite_label(label);
+        let label_str = rewrite_label(context, label);
         let result = format!("{prefix}{label_str}{{ {expr_str} }}");
         if result.len() <= shape.width && !result.contains('\n') {
             return Some(result);
@@ -562,7 +562,7 @@ pub(crate) fn rewrite_block_with_visitor(
     }
 
     let inner_attrs = attrs.map(inner_attributes);
-    let label_str = rewrite_label(label);
+    let label_str = rewrite_label(context, label);
     visitor.visit_block(block, inner_attrs.as_deref(), has_braces);
     let visitor_context = visitor.get_context();
     context
@@ -939,7 +939,7 @@ impl<'a> ControlFlow<'a> {
             fresh_shape
         };
 
-        let label_string = rewrite_label(self.label);
+        let label_string = rewrite_label(context, self.label);
         // 1 = space after keyword.
         let offset = self.keyword.len() + label_string.len() + 1;
 
@@ -1168,9 +1168,9 @@ impl<'a> Rewrite for ControlFlow<'a> {
     }
 }
 
-fn rewrite_label(opt_label: Option<ast::Label>) -> Cow<'static, str> {
+fn rewrite_label(context: &RewriteContext<'_>, opt_label: Option<ast::Label>) -> Cow<'static, str> {
     match opt_label {
-        Some(label) => Cow::from(format!("{}: ", label.ident)),
+        Some(label) => Cow::from(format!("{}: ", context.snippet(label.ident.span))),
         None => Cow::from(""),
     }
 }
diff --git a/src/tools/rustfmt/src/macros.rs b/src/tools/rustfmt/src/macros.rs
index b14b74a4938..524fc666fae 100644
--- a/src/tools/rustfmt/src/macros.rs
+++ b/src/tools/rustfmt/src/macros.rs
@@ -1074,7 +1074,7 @@ fn force_space_before(tok: &TokenKind) -> bool {
 fn ident_like(tok: &Token) -> bool {
     matches!(
         tok.kind,
-        TokenKind::Ident(..) | TokenKind::Literal(..) | TokenKind::Lifetime(_)
+        TokenKind::Ident(..) | TokenKind::Literal(..) | TokenKind::Lifetime(..)
     )
 }
 
@@ -1099,7 +1099,9 @@ fn next_space(tok: &TokenKind) -> SpaceState {
         | TokenKind::OpenDelim(_)
         | TokenKind::CloseDelim(_) => SpaceState::Never,
 
-        TokenKind::Literal(..) | TokenKind::Ident(..) | TokenKind::Lifetime(_) => SpaceState::Ident,
+        TokenKind::Literal(..) | TokenKind::Ident(..) | TokenKind::Lifetime(..) => {
+            SpaceState::Ident
+        }
 
         _ => SpaceState::Always,
     }
diff --git a/src/tools/rustfmt/src/types.rs b/src/tools/rustfmt/src/types.rs
index 875c61113c5..7730aa467ce 100644
--- a/src/tools/rustfmt/src/types.rs
+++ b/src/tools/rustfmt/src/types.rs
@@ -548,7 +548,7 @@ impl Rewrite for ast::AnonConst {
 
 impl Rewrite for ast::Lifetime {
     fn rewrite(&self, context: &RewriteContext<'_>, _: Shape) -> Option<String> {
-        Some(rewrite_ident(context, self.ident).to_owned())
+        Some(context.snippet(self.ident.span).to_owned())
     }
 }
 
diff --git a/src/tools/rustfmt/tests/target/raw-lifetimes.rs b/src/tools/rustfmt/tests/target/raw-lifetimes.rs
new file mode 100644
index 00000000000..62fb9be6882
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/raw-lifetimes.rs
@@ -0,0 +1,15 @@
+// rustfmt-edition: 2021
+
+// Simple idempotence test for raw lifetimes.
+
+fn test<'r#gen>() -> &'r#gen () {
+    // Test raw lifetimes...
+}
+
+fn label() {
+    'r#label: {
+        // Test raw labels.
+    }
+}
+
+fn main() {}
diff --git a/tests/crashes/123629.rs b/tests/crashes/123629.rs
new file mode 100644
index 00000000000..61532321806
--- /dev/null
+++ b/tests/crashes/123629.rs
@@ -0,0 +1,10 @@
+//@ known-bug: #123629
+#![feature(generic_assert)]
+
+fn foo()
+where
+    for<const N: usize = { assert!(u) }> ():,
+{
+}
+
+fn main() {}
diff --git a/tests/crashes/127033.rs b/tests/crashes/127033.rs
new file mode 100644
index 00000000000..919c9dfd30e
--- /dev/null
+++ b/tests/crashes/127033.rs
@@ -0,0 +1,18 @@
+//@ known-bug: #127033
+//@ compile-flags: --edition=2021
+
+pub trait RaftLogStorage {
+    fn save_vote(vote: ()) -> impl std::future::Future + Send;
+}
+
+struct X;
+impl RaftLogStorage for X {
+    fn save_vote(vote: ()) -> impl std::future::Future {
+        loop {}
+        async {
+            vote
+        }
+    }
+}
+
+fn main() {}
diff --git a/tests/crashes/129372.rs b/tests/crashes/129372.rs
new file mode 100644
index 00000000000..43be01b35df
--- /dev/null
+++ b/tests/crashes/129372.rs
@@ -0,0 +1,52 @@
+//@ known-bug: #129372
+//@ compile-flags: -Cdebuginfo=2 -Copt-level=0
+
+pub struct Wrapper<T>(T);
+struct Struct;
+
+pub trait TraitA {
+    type AssocA<'t>;
+}
+pub trait TraitB {
+    type AssocB;
+}
+
+pub fn helper(v: impl MethodTrait) {
+    let _local_that_causes_ice = v.method();
+}
+
+pub fn main() {
+    helper(Wrapper(Struct));
+}
+
+pub trait MethodTrait {
+    type Assoc<'a>;
+
+    fn method(self) -> impl for<'a> FnMut(&'a ()) -> Self::Assoc<'a>;
+}
+
+impl<T: TraitB> MethodTrait for T
+where
+    <T as TraitB>::AssocB: TraitA,
+{
+    type Assoc<'a> = <T::AssocB as TraitA>::AssocA<'a>;
+
+    fn method(self) -> impl for<'a> FnMut(&'a ()) -> Self::Assoc<'a> {
+        move |_| loop {}
+    }
+}
+
+impl<T, B> TraitB for Wrapper<B>
+where
+    B: TraitB<AssocB = T>,
+{
+    type AssocB = T;
+}
+
+impl TraitB for Struct {
+    type AssocB = Struct;
+}
+
+impl TraitA for Struct {
+    type AssocA<'t> = Self;
+}
diff --git a/tests/rustdoc-js-std/parser-errors.js b/tests/rustdoc-js-std/parser-errors.js
index c4d7c2b0b85..5ce35bf511d 100644
--- a/tests/rustdoc-js-std/parser-errors.js
+++ b/tests/rustdoc-js-std/parser-errors.js
@@ -252,15 +252,6 @@ const PARSED = [
         error: "Unexpected `'` after `b` (not a valid identifier)",
     },
     {
-        query: "a->",
-        elems: [],
-        foundElems: 0,
-        original: "a->",
-        returned: [],
-        userQuery: "a->",
-        error: "Expected at least one item after `->`",
-    },
-    {
         query: '"p" <a>',
         elems: [],
         foundElems: 0,
diff --git a/tests/rustdoc-js-std/parser-returned.js b/tests/rustdoc-js-std/parser-returned.js
index 44e517c49b5..8f68209bb96 100644
--- a/tests/rustdoc-js-std/parser-returned.js
+++ b/tests/rustdoc-js-std/parser-returned.js
@@ -94,4 +94,72 @@ const PARSED = [
         userQuery: "-> !",
         error: null,
     },
+    {
+        query: "a->",
+        elems: [{
+            name: "a",
+            fullPath: ["a"],
+            pathWithoutLast: [],
+            pathLast: "a",
+            generics: [],
+            typeFilter: -1,
+        }],
+        foundElems: 1,
+        original: "a->",
+        returned: [],
+        userQuery: "a->",
+        hasReturnArrow: true,
+        error: null,
+    },
+    {
+        query: "!->",
+        elems: [{
+            name: "never",
+            fullPath: ["never"],
+            pathWithoutLast: [],
+            pathLast: "never",
+            generics: [],
+            typeFilter: 1,
+        }],
+        foundElems: 1,
+        original: "!->",
+        returned: [],
+        userQuery: "!->",
+        hasReturnArrow: true,
+        error: null,
+    },
+    {
+        query: "! ->",
+        elems: [{
+            name: "never",
+            fullPath: ["never"],
+            pathWithoutLast: [],
+            pathLast: "never",
+            generics: [],
+            typeFilter: 1,
+        }],
+        foundElems: 1,
+        original: "! ->",
+        returned: [],
+        userQuery: "! ->",
+        hasReturnArrow: true,
+        error: null,
+    },
+    {
+        query: "primitive:!->",
+        elems: [{
+            name: "never",
+            fullPath: ["never"],
+            pathWithoutLast: [],
+            pathLast: "never",
+            generics: [],
+            typeFilter: 1,
+        }],
+        foundElems: 1,
+        original: "primitive:!->",
+        returned: [],
+        userQuery: "primitive:!->",
+        hasReturnArrow: true,
+        error: null,
+    },
 ];
diff --git a/tests/rustdoc-js/never-search.js b/tests/rustdoc-js/never-search.js
index 9f18370c2f5..9cc62a5ed04 100644
--- a/tests/rustdoc-js/never-search.js
+++ b/tests/rustdoc-js/never-search.js
@@ -2,6 +2,13 @@
 
 const EXPECTED = [
     {
+        'query': '! ->',
+        'others': [
+            { 'path': 'never_search', 'name': 'impossible' },
+            { 'path': 'never_search', 'name': 'box_impossible' },
+        ],
+    },
+    {
         'query': '-> !',
         'others': [
             { 'path': 'never_search', 'name': 'loops' },
diff --git a/tests/ui/async-await/async-closures/tainted-body-2.rs b/tests/ui/async-await/async-closures/tainted-body-2.rs
new file mode 100644
index 00000000000..73c6bdc30a0
--- /dev/null
+++ b/tests/ui/async-await/async-closures/tainted-body-2.rs
@@ -0,0 +1,18 @@
+//@ edition: 2021
+
+#![feature(async_closure)]
+
+// Ensure that building a by-ref async closure body doesn't ICE when the parent
+// body is tainted.
+
+fn main() {
+    missing;
+    //~^ ERROR cannot find value `missing` in this scope
+
+    // We don't do numerical inference fallback when the body is tainted.
+    // This leads to writeback folding the type of the coroutine-closure
+    // into an error type, since its signature contains that numerical
+    // infer var.
+    let c = async |_| {};
+    c(1);
+}
diff --git a/tests/ui/async-await/async-closures/tainted-body-2.stderr b/tests/ui/async-await/async-closures/tainted-body-2.stderr
new file mode 100644
index 00000000000..798d47064d9
--- /dev/null
+++ b/tests/ui/async-await/async-closures/tainted-body-2.stderr
@@ -0,0 +1,9 @@
+error[E0425]: cannot find value `missing` in this scope
+  --> $DIR/tainted-body-2.rs:9:5
+   |
+LL |     missing;
+   |     ^^^^^^^ not found in this scope
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0425`.
diff --git a/tests/ui/async-await/async-closures/validate-synthetic-body.rs b/tests/ui/async-await/async-closures/validate-synthetic-body.rs
new file mode 100644
index 00000000000..67e683ac08a
--- /dev/null
+++ b/tests/ui/async-await/async-closures/validate-synthetic-body.rs
@@ -0,0 +1,19 @@
+//@ check-pass
+//@ edition: 2021
+
+#![feature(async_closure)]
+
+// Make sure that we don't hit a query cycle when validating
+// the by-move coroutine body for an async closure.
+
+use std::future::Future;
+
+async fn test<Fut: Future>(operation: impl Fn() -> Fut) {
+    operation().await;
+}
+
+pub async fn orchestrate_simple_crud() {
+    test(async || async {}.await).await;
+}
+
+fn main() {}
diff --git a/tests/ui/consts/const-float-bits-conv.rs b/tests/ui/consts/const-float-bits-conv.rs
index 3a526c54dc3..869498d1076 100644
--- a/tests/ui/consts/const-float-bits-conv.rs
+++ b/tests/ui/consts/const-float-bits-conv.rs
@@ -1,10 +1,9 @@
 //@ compile-flags: -Zmir-opt-level=0
 //@ run-pass
 
-#![feature(const_float_bits_conv)]
 #![feature(const_float_classify)]
-#![feature(f16)]
-#![feature(f128)]
+#![feature(f16, f16_const)]
+#![feature(f128, f128_const)]
 #![allow(unused_macro_rules)]
 // Don't promote
 const fn nop<T>(x: T) -> T { x }
diff --git a/tests/ui/consts/const-float-classify.rs b/tests/ui/consts/const-float-classify.rs
index c64d31a5c60..6e5097f7f2b 100644
--- a/tests/ui/consts/const-float-classify.rs
+++ b/tests/ui/consts/const-float-classify.rs
@@ -2,7 +2,6 @@
 //@ known-bug: #110395
 // FIXME(effects) run-pass
 
-#![feature(const_float_bits_conv)]
 #![feature(const_float_classify)]
 #![feature(const_trait_impl, effects)]
 #![allow(incomplete_features)]
diff --git a/tests/ui/consts/const-float-classify.stderr b/tests/ui/consts/const-float-classify.stderr
index 38acb8a2281..a35de8ad0ea 100644
--- a/tests/ui/consts/const-float-classify.stderr
+++ b/tests/ui/consts/const-float-classify.stderr
@@ -1,5 +1,5 @@
 error: const `impl` for trait `PartialEq` which is not marked with `#[const_trait]`
-  --> $DIR/const-float-classify.rs:13:12
+  --> $DIR/const-float-classify.rs:12:12
    |
 LL | impl const PartialEq<NonDet> for bool {
    |            ^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/lexer/prefixed-lifetime.rs b/tests/ui/lexer/prefixed-lifetime.rs
new file mode 100644
index 00000000000..6191b97d576
--- /dev/null
+++ b/tests/ui/lexer/prefixed-lifetime.rs
@@ -0,0 +1,10 @@
+//@ edition: 2021
+
+macro_rules! w {
+    ($($tt:tt)*) => {};
+}
+
+w!('foo#lifetime);
+//~^ ERROR prefix `'foo` is unknown
+
+fn main() {}
diff --git a/tests/ui/lexer/prefixed-lifetime.stderr b/tests/ui/lexer/prefixed-lifetime.stderr
new file mode 100644
index 00000000000..39e8b5a2a57
--- /dev/null
+++ b/tests/ui/lexer/prefixed-lifetime.stderr
@@ -0,0 +1,14 @@
+error: prefix `'foo` is unknown
+  --> $DIR/prefixed-lifetime.rs:7:4
+   |
+LL | w!('foo#lifetime);
+   |    ^^^^ unknown prefix
+   |
+   = note: prefixed identifiers and literals are reserved since Rust 2021
+help: consider inserting whitespace here
+   |
+LL | w!('foo #lifetime);
+   |        +
+
+error: aborting due to 1 previous error
+
diff --git a/tests/ui/lifetimes/raw/gen-lt.e2024.stderr b/tests/ui/lifetimes/raw/gen-lt.e2024.stderr
new file mode 100644
index 00000000000..232453df8ef
--- /dev/null
+++ b/tests/ui/lifetimes/raw/gen-lt.e2024.stderr
@@ -0,0 +1,8 @@
+error: lifetimes cannot use keyword names
+  --> $DIR/gen-lt.rs:11:11
+   |
+LL | fn gen_lt<'gen>() {}
+   |           ^^^^
+
+error: aborting due to 1 previous error
+
diff --git a/tests/ui/lifetimes/raw/gen-lt.rs b/tests/ui/lifetimes/raw/gen-lt.rs
new file mode 100644
index 00000000000..4f3ede5b4a2
--- /dev/null
+++ b/tests/ui/lifetimes/raw/gen-lt.rs
@@ -0,0 +1,14 @@
+//@ revisions: e2021 e2024
+
+//@[e2021] edition:2021
+//@[e2024] edition:2024
+//@[e2024] compile-flags: -Zunstable-options
+
+//@[e2021] check-pass
+
+fn raw_gen_lt<'r#gen>() {}
+
+fn gen_lt<'gen>() {}
+//[e2024]~^ ERROR lifetimes cannot use keyword names
+
+fn main() {}
diff --git a/tests/ui/lifetimes/raw/lifetimes-eq.rs b/tests/ui/lifetimes/raw/lifetimes-eq.rs
new file mode 100644
index 00000000000..dddafb829ba
--- /dev/null
+++ b/tests/ui/lifetimes/raw/lifetimes-eq.rs
@@ -0,0 +1,8 @@
+//@ edition: 2021
+//@ check-pass
+
+// Test that `'r#a` is `'a`.
+
+fn test<'r#a>(x: &'a ()) {}
+
+fn main() {}
diff --git a/tests/ui/lifetimes/raw/macro-lt.rs b/tests/ui/lifetimes/raw/macro-lt.rs
new file mode 100644
index 00000000000..d1167b00467
--- /dev/null
+++ b/tests/ui/lifetimes/raw/macro-lt.rs
@@ -0,0 +1,12 @@
+//@ check-pass
+//@ edition: 2021
+
+macro_rules! lifetime {
+    ($lt:lifetime) => {
+        fn hello<$lt>() {}
+    }
+}
+
+lifetime!('r#struct);
+
+fn main() {}
diff --git a/tests/ui/lifetimes/raw/multiple-prefixes.rs b/tests/ui/lifetimes/raw/multiple-prefixes.rs
new file mode 100644
index 00000000000..f335373d8a7
--- /dev/null
+++ b/tests/ui/lifetimes/raw/multiple-prefixes.rs
@@ -0,0 +1,6 @@
+//@ edition: 2021
+
+fn test(x: &'r#r#r ()) {}
+//~^ ERROR expected type, found `#`
+
+fn main() {}
diff --git a/tests/ui/lifetimes/raw/multiple-prefixes.stderr b/tests/ui/lifetimes/raw/multiple-prefixes.stderr
new file mode 100644
index 00000000000..8d5479e0a4f
--- /dev/null
+++ b/tests/ui/lifetimes/raw/multiple-prefixes.stderr
@@ -0,0 +1,8 @@
+error: expected type, found `#`
+  --> $DIR/multiple-prefixes.rs:3:17
+   |
+LL | fn test(x: &'r#r#r ()) {}
+   |                 ^ expected type
+
+error: aborting due to 1 previous error
+
diff --git a/tests/ui/lifetimes/raw/prim-lt.rs b/tests/ui/lifetimes/raw/prim-lt.rs
new file mode 100644
index 00000000000..ca45efb65fd
--- /dev/null
+++ b/tests/ui/lifetimes/raw/prim-lt.rs
@@ -0,0 +1,8 @@
+//@ check-pass
+//@ edition: 2021
+
+// Checks a primitive name can be defined as a lifetime.
+
+fn foo<'r#i32>() {}
+
+fn main() {}
diff --git a/tests/ui/lifetimes/raw/simple.rs b/tests/ui/lifetimes/raw/simple.rs
new file mode 100644
index 00000000000..6f70a272203
--- /dev/null
+++ b/tests/ui/lifetimes/raw/simple.rs
@@ -0,0 +1,21 @@
+//@ check-pass
+//@ edition: 2021
+
+fn foo<'r#struct>() {}
+
+fn hr<T>() where for<'r#struct> T: Into<&'r#struct ()> {}
+
+trait Foo<'r#struct> {}
+
+trait Bar<'r#struct> {
+    fn method(&'r#struct self) {}
+    fn method2(self: &'r#struct Self) {}
+}
+
+fn labeled() {
+    'r#struct: loop {
+        break 'r#struct;
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/lifetimes/raw/static-lt.rs b/tests/ui/lifetimes/raw/static-lt.rs
new file mode 100644
index 00000000000..1fec7097dab
--- /dev/null
+++ b/tests/ui/lifetimes/raw/static-lt.rs
@@ -0,0 +1,8 @@
+//@ check-pass
+//@ edition: 2021
+
+// Makes sure that `'r#static` is `'static`
+
+const FOO: &'r#static str = "hello, world";
+
+fn main() {}
diff --git a/tests/ui/lifetimes/raw/three-tokens.rs b/tests/ui/lifetimes/raw/three-tokens.rs
new file mode 100644
index 00000000000..2ae54ebbcb5
--- /dev/null
+++ b/tests/ui/lifetimes/raw/three-tokens.rs
@@ -0,0 +1,12 @@
+//@ edition: 2015
+//@ check-pass
+// Ensure that we parse `'r#lt` as three tokens in edition 2015.
+
+macro_rules! ed2015 {
+    ('r # lt) => {};
+    ($lt:lifetime) => { compile_error!() };
+}
+
+ed2015!('r#lt);
+
+fn main() {}
diff --git a/tests/ui/rust-2024/gen-kw.e2015.stderr b/tests/ui/rust-2024/gen-kw.e2015.stderr
index b1074f77e00..ff552f663c7 100644
--- a/tests/ui/rust-2024/gen-kw.e2015.stderr
+++ b/tests/ui/rust-2024/gen-kw.e2015.stderr
@@ -31,5 +31,14 @@ LL |     () => { mod test { fn gen() {} } }
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2024!
    = note: for more information, see issue #49716 <https://github.com/rust-lang/rust/issues/49716>
 
-error: aborting due to 3 previous errors
+error: `gen` is a keyword in the 2024 edition
+  --> $DIR/gen-kw.rs:25:9
+   |
+LL | fn test<'gen>() {}
+   |         ^^^^ help: you can use a raw identifier to stay compatible: `'r#gen`
+   |
+   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2024!
+   = note: for more information, see issue #49716 <https://github.com/rust-lang/rust/issues/49716>
+
+error: aborting due to 4 previous errors
 
diff --git a/tests/ui/rust-2024/gen-kw.e2018.stderr b/tests/ui/rust-2024/gen-kw.e2018.stderr
index b902cff7fdb..efa812069c3 100644
--- a/tests/ui/rust-2024/gen-kw.e2018.stderr
+++ b/tests/ui/rust-2024/gen-kw.e2018.stderr
@@ -31,5 +31,14 @@ LL |     () => { mod test { fn gen() {} } }
    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2024!
    = note: for more information, see issue #49716 <https://github.com/rust-lang/rust/issues/49716>
 
-error: aborting due to 3 previous errors
+error: `gen` is a keyword in the 2024 edition
+  --> $DIR/gen-kw.rs:25:9
+   |
+LL | fn test<'gen>() {}
+   |         ^^^^ help: you can use a raw identifier to stay compatible: `'r#gen`
+   |
+   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2024!
+   = note: for more information, see issue #49716 <https://github.com/rust-lang/rust/issues/49716>
+
+error: aborting due to 4 previous errors
 
diff --git a/tests/ui/rust-2024/gen-kw.rs b/tests/ui/rust-2024/gen-kw.rs
index 04251cbcac4..5a658470c0a 100644
--- a/tests/ui/rust-2024/gen-kw.rs
+++ b/tests/ui/rust-2024/gen-kw.rs
@@ -22,4 +22,9 @@ macro_rules! t {
     //[e2018]~| WARNING this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2024!
 }
 
+fn test<'gen>() {}
+//~^ ERROR `gen` is a keyword in the 2024 edition
+//[e2015]~| WARNING this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2024!
+//[e2018]~| WARNING this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2024!
+
 t!();