Auto merge of #103787 - notriddle:rollup-q1vmxsb, r=notriddle

Rollup of 8 pull requests

Successful merges:

 - #97971 (Enable varargs support for calling conventions other than C or cdecl )
 - #101428 (Add mir building test directory)
 - #101944 (rustdoc: clean up `#toggle-all-docs`)
 - #102101 (check lld version to choose correct option to disable multi-threading in tests)
 - #102689 (Add a tier 3 target for the Sony PlayStation 1)
 - #103746 (rustdoc: add support for incoherent impls on structs and traits)
 - #103758 (Add regression test for reexports in search results)
 - #103764 (All verbosity checks in `PrettyPrinter` now go through `PrettyPrinter::should_print_verbose`)

Failed merges:

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

compiler/rustc_const_eval/src/interpret/intrinsics/type_name.rs

@@ -4,7 +4,7 @@ use rustc_hir::definitions::DisambiguatedDefPathData;
 use rustc_middle::mir::interpret::{Allocation, ConstAllocation};
 use rustc_middle::ty::{
     self,
-    print::{with_no_verbose_constants, PrettyPrinter, Print, Printer},
+    print::{PrettyPrinter, Print, Printer},
     subst::{GenericArg, GenericArgKind},
     Ty, TyCtxt,
 };
@@ -179,6 +179,11 @@ impl<'tcx> PrettyPrinter<'tcx> for AbsolutePathPrinter<'tcx> {
 
         Ok(self)
     }
+
+    fn should_print_verbose(&self) -> bool {
+        // `std::any::type_name` should never print verbose type names
+        false
+    }
 }
 
 impl Write for AbsolutePathPrinter<'_> {
@@ -190,9 +195,7 @@ impl Write for AbsolutePathPrinter<'_> {
 
 /// Directly returns an `Allocation` containing an absolute path representation of the given type.
 pub(crate) fn alloc_type_name<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> ConstAllocation<'tcx> {
-    let path = with_no_verbose_constants!(
+    let path = AbsolutePathPrinter { tcx, path: String::new() }.print_type(ty).unwrap().path;
-        AbsolutePathPrinter { tcx, path: String::new() }.print_type(ty).unwrap().path
-    );
     let alloc = Allocation::from_bytes_byte_aligned_immutable(path.into_bytes());
     tcx.intern_const_alloc(alloc)
 }

compiler/rustc_feature/src/active.rs

@@ -388,6 +388,9 @@ declare_features! (
     (active, exclusive_range_pattern, "1.11.0", Some(37854), None),
     /// Allows exhaustive pattern matching on types that contain uninhabited types.
     (active, exhaustive_patterns, "1.13.0", Some(51085), None),
+    /// Allows using `efiapi`, `sysv64` and `win64` as calling convention
+    /// for functions with varargs.
+    (active, extended_varargs_abi_support, "1.65.0", Some(100189), None),
     /// Allows defining `extern type`s.
     (active, extern_types, "1.23.0", Some(43467), None),
     /// Allows the use of `#[ffi_const]` on foreign functions.

compiler/rustc_hir_analysis/src/lib.rs

@@ -106,7 +106,7 @@ use rustc_middle::middle;
 use rustc_middle::ty::query::Providers;
 use rustc_middle::ty::{self, Ty, TyCtxt};
 use rustc_middle::util;
-use rustc_session::config::EntryFnType;
+use rustc_session::{config::EntryFnType, parse::feature_err};
 use rustc_span::{symbol::sym, Span, DUMMY_SP};
 use rustc_target::spec::abi::Abi;
 use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt as _;
@@ -118,20 +118,40 @@ use astconv::AstConv;
 use bounds::Bounds;
 
 fn require_c_abi_if_c_variadic(tcx: TyCtxt<'_>, decl: &hir::FnDecl<'_>, abi: Abi, span: Span) {
-    match (decl.c_variadic, abi) {
+    const ERROR_HEAD: &str = "C-variadic function must have a compatible calling convention";
-        // The function has the correct calling convention, or isn't a "C-variadic" function.
+    const CONVENTIONS_UNSTABLE: &str = "`C`, `cdecl`, `win64`, `sysv64` or `efiapi`";
-        (false, _) | (true, Abi::C { .. }) | (true, Abi::Cdecl { .. }) => {}
+    const CONVENTIONS_STABLE: &str = "`C` or `cdecl`";
-        // The function is a "C-variadic" function with an incorrect calling convention.
+    const UNSTABLE_EXPLAIN: &str =
-        (true, _) => {
+        "using calling conventions other than `C` or `cdecl` for varargs functions is unstable";
-            let mut err = struct_span_err!(
+
-                tcx.sess,
+    if !decl.c_variadic || matches!(abi, Abi::C { .. } | Abi::Cdecl { .. }) {
-                span,
+        return;
-                E0045,
-                "C-variadic function must have C or cdecl calling convention"
-            );
-            err.span_label(span, "C-variadics require C or cdecl calling convention").emit();
-        }
     }
+
+    let extended_abi_support = tcx.features().extended_varargs_abi_support;
+    let conventions = match (extended_abi_support, abi.supports_varargs()) {
+        // User enabled additional ABI support for varargs and function ABI matches those ones.
+        (true, true) => return,
+
+        // Using this ABI would be ok, if the feature for additional ABI support was enabled.
+        // Return CONVENTIONS_STABLE, because we want the other error to look the same.
+        (false, true) => {
+            feature_err(
+                &tcx.sess.parse_sess,
+                sym::extended_varargs_abi_support,
+                span,
+                UNSTABLE_EXPLAIN,
+            )
+            .emit();
+            CONVENTIONS_STABLE
+        }
+
+        (false, false) => CONVENTIONS_STABLE,
+        (true, false) => CONVENTIONS_UNSTABLE,
+    };
+
+    let mut err = struct_span_err!(tcx.sess, span, E0045, "{}, like {}", ERROR_HEAD, conventions);
+    err.span_label(span, ERROR_HEAD).emit();
 }
 
 fn require_same_types<'tcx>(

compiler/rustc_middle/src/ty/print/pretty.rs

@@ -63,7 +63,6 @@ thread_local! {
     static NO_TRIMMED_PATH: Cell<bool> = const { Cell::new(false) };
     static NO_QUERIES: Cell<bool> = const { Cell::new(false) };
     static NO_VISIBLE_PATH: Cell<bool> = const { Cell::new(false) };
-    static NO_VERBOSE_CONSTANTS: Cell<bool> = const { Cell::new(false) };
 }
 
 macro_rules! define_helper {
@@ -118,9 +117,6 @@ define_helper!(
     /// Prevent selection of visible paths. `Display` impl of DefId will prefer
     /// visible (public) reexports of types as paths.
     fn with_no_visible_paths(NoVisibleGuard, NO_VISIBLE_PATH);
-    /// Prevent verbose printing of constants. Verbose printing of constants is
-    /// never desirable in some contexts like `std::any::type_name`.
-    fn with_no_verbose_constants(NoVerboseConstantsGuard, NO_VERBOSE_CONSTANTS);
 );
 
 /// The "region highlights" are used to control region printing during
@@ -600,7 +596,7 @@ pub trait PrettyPrinter<'tcx>:
             }
             ty::FnPtr(ref bare_fn) => p!(print(bare_fn)),
             ty::Infer(infer_ty) => {
-                let verbose = self.tcx().sess.verbose();
+                let verbose = self.should_print_verbose();
                 if let ty::TyVar(ty_vid) = infer_ty {
                     if let Some(name) = self.ty_infer_name(ty_vid) {
                         p!(write("{}", name))
@@ -642,7 +638,7 @@ pub trait PrettyPrinter<'tcx>:
                 p!(print_def_path(def_id, &[]));
             }
             ty::Projection(ref data) => {
-                if !(self.tcx().sess.verbose() || NO_QUERIES.with(|q| q.get()))
+                if !(self.should_print_verbose() || NO_QUERIES.with(|q| q.get()))
                     && self.tcx().def_kind(data.item_def_id) == DefKind::ImplTraitPlaceholder
                 {
                     return self.pretty_print_opaque_impl_type(data.item_def_id, data.substs);
@@ -658,7 +654,7 @@ pub trait PrettyPrinter<'tcx>:
                 // only affect certain debug messages (e.g. messages printed
                 // from `rustc_middle::ty` during the computation of `tcx.predicates_of`),
                 // and should have no effect on any compiler output.
-                if self.tcx().sess.verbose() || NO_QUERIES.with(|q| q.get()) {
+                if self.should_print_verbose() || NO_QUERIES.with(|q| q.get()) {
                     p!(write("Opaque({:?}, {:?})", def_id, substs));
                     return Ok(self);
                 }
@@ -689,7 +685,7 @@ pub trait PrettyPrinter<'tcx>:
                     hir::Movability::Static => p!("static "),
                 }
 
-                if !self.tcx().sess.verbose() {
+                if !self.should_print_verbose() {
                     p!("generator");
                     // FIXME(eddyb) should use `def_span`.
                     if let Some(did) = did.as_local() {
@@ -725,7 +721,7 @@ pub trait PrettyPrinter<'tcx>:
             }
             ty::Closure(did, substs) => {
                 p!(write("["));
-                if !self.tcx().sess.verbose() {
+                if !self.should_print_verbose() {
                     p!(write("closure"));
                     // FIXME(eddyb) should use `def_span`.
                     if let Some(did) = did.as_local() {
@@ -763,7 +759,7 @@ pub trait PrettyPrinter<'tcx>:
             }
             ty::Array(ty, sz) => {
                 p!("[", print(ty), "; ");
-                if !NO_VERBOSE_CONSTANTS.with(|flag| flag.get()) && self.tcx().sess.verbose() {
+                if self.should_print_verbose() {
                     p!(write("{:?}", sz));
                 } else if let ty::ConstKind::Unevaluated(..) = sz.kind() {
                     // Do not try to evaluate unevaluated constants. If we are const evaluating an
@@ -1077,7 +1073,7 @@ pub trait PrettyPrinter<'tcx>:
 
                 // Special-case `Fn(...) -> ...` and re-sugar it.
                 let fn_trait_kind = cx.tcx().fn_trait_kind_from_lang_item(principal.def_id);
-                if !cx.tcx().sess.verbose() && fn_trait_kind.is_some() {
+                if !cx.should_print_verbose() && fn_trait_kind.is_some() {
                     if let ty::Tuple(tys) = principal.substs.type_at(0).kind() {
                         let mut projections = predicates.projection_bounds();
                         if let (Some(proj), None) = (projections.next(), projections.next()) {
@@ -1185,7 +1181,7 @@ pub trait PrettyPrinter<'tcx>:
     ) -> Result<Self::Const, Self::Error> {
         define_scoped_cx!(self);
 
-        if !NO_VERBOSE_CONSTANTS.with(|flag| flag.get()) && self.tcx().sess.verbose() {
+        if self.should_print_verbose() {
             p!(write("Const({:?}: {:?})", ct.kind(), ct.ty()));
             return Ok(self);
         }
@@ -1420,7 +1416,7 @@ pub trait PrettyPrinter<'tcx>:
     ) -> Result<Self::Const, Self::Error> {
         define_scoped_cx!(self);
 
-        if !NO_VERBOSE_CONSTANTS.with(|flag| flag.get()) && self.tcx().sess.verbose() {
+        if self.should_print_verbose() {
             p!(write("ValTree({:?}: ", valtree), print(ty), ")");
             return Ok(self);
         }
@@ -1564,6 +1560,10 @@ pub trait PrettyPrinter<'tcx>:
             Ok(cx)
         })
     }
+
+    fn should_print_verbose(&self) -> bool {
+        self.tcx().sess.verbose()
+    }
 }
 
 // HACK(eddyb) boxed to avoid moving around a large struct by-value.
@@ -1839,7 +1839,7 @@ impl<'tcx> Printer<'tcx> for FmtPrinter<'_, 'tcx> {
             }
         }
 
-        let verbose = self.tcx.sess.verbose();
+        let verbose = self.should_print_verbose();
         disambiguated_data.fmt_maybe_verbose(&mut self, verbose)?;
 
         self.empty_path = false;
@@ -1940,7 +1940,7 @@ impl<'tcx> PrettyPrinter<'tcx> for FmtPrinter<'_, 'tcx> {
             return true;
         }
 
-        if self.tcx.sess.verbose() {
+        if self.should_print_verbose() {
             return true;
         }
 
@@ -2012,7 +2012,7 @@ impl<'tcx> FmtPrinter<'_, 'tcx> {
             return Ok(self);
         }
 
-        if self.tcx.sess.verbose() {
+        if self.should_print_verbose() {
             p!(write("{:?}", region));
             return Ok(self);
         }
@@ -2218,7 +2218,7 @@ impl<'tcx> FmtPrinter<'_, 'tcx> {
         // aren't named. Eventually, we might just want this as the default, but
         // this is not *quite* right and changes the ordering of some output
         // anyways.
-        let (new_value, map) = if self.tcx().sess.verbose() {
+        let (new_value, map) = if self.should_print_verbose() {
             let regions: Vec<_> = value
                 .bound_vars()
                 .into_iter()

compiler/rustc_mir_transform/src/lib.rs

@@ -288,7 +288,7 @@ fn mir_const<'tcx>(
 
     let mut body = tcx.mir_built(def).steal();
 
-    rustc_middle::mir::dump_mir(tcx, None, "mir_map", &0, &body, |_, _| Ok(()));
+    pass_manager::dump_mir_for_phase_change(tcx, &body);
 
     pm::run_passes(
         tcx,

compiler/rustc_mir_transform/src/shim.rs

@@ -845,7 +845,7 @@ pub fn build_adt_ctor(tcx: TyCtxt<'_>, ctor_id: DefId) -> Body<'_> {
         span,
     );
 
-    rustc_middle::mir::dump_mir(tcx, None, "mir_map", &0, &body, |_, _| Ok(()));
+    crate::pass_manager::dump_mir_for_phase_change(tcx, &body);
 
     body
 }

compiler/rustc_span/src/symbol.rs

@@ -694,6 +694,7 @@ symbols! {
         export_name,
         expr,
         extended_key_value_attributes,
+        extended_varargs_abi_support,
         extern_absolute_paths,
         extern_crate_item_prelude,
         extern_crate_self,

compiler/rustc_target/src/spec/abi.rs

@@ -40,6 +40,28 @@ pub enum Abi {
     RustCold,
 }
 
+impl Abi {
+    pub fn supports_varargs(self) -> bool {
+        // * C and Cdecl obviously support varargs.
+        // * C can be based on SysV64 or Win64, so they must support varargs.
+        // * EfiApi is based on Win64 or C, so it also supports it.
+        //
+        // * Stdcall does not, because it would be impossible for the callee to clean
+        //   up the arguments. (callee doesn't know how many arguments are there)
+        // * Same for Fastcall, Vectorcall and Thiscall.
+        // * System can become Stdcall, so is also a no-no.
+        // * Other calling conventions are related to hardware or the compiler itself.
+        match self {
+            Self::C { .. }
+            | Self::Cdecl { .. }
+            | Self::Win64 { .. }
+            | Self::SysV64 { .. }
+            | Self::EfiApi => true,
+            _ => false,
+        }
+    }
+}
+
 #[derive(Copy, Clone)]
 pub struct AbiData {
     abi: Abi,

compiler/rustc_target/src/spec/mipsel_sony_psx.rs

@@ -0,0 +1,37 @@
+use crate::spec::{cvs, Cc, LinkerFlavor, Lld, PanicStrategy, RelocModel, Target, TargetOptions};
+
+pub fn target() -> Target {
+    Target {
+        llvm_target: "mipsel-sony-psx".into(),
+        pointer_width: 32,
+        data_layout: "e-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64".into(),
+        arch: "mips".into(),
+
+        options: TargetOptions {
+            os: "none".into(),
+            env: "psx".into(),
+            vendor: "sony".into(),
+            linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::Yes),
+            cpu: "mips1".into(),
+            executables: true,
+            linker: Some("rust-lld".into()),
+            relocation_model: RelocModel::Static,
+            exe_suffix: ".exe".into(),
+
+            // PSX doesn't natively support floats.
+            features: "+soft-float".into(),
+
+            // This should be 16 bits, but LLVM incorrectly tries emitting MIPS-II SYNC instructions
+            // for atomic loads and stores. This crashes rustc so we have to disable the Atomic* API
+            // until this is fixed upstream. See https://reviews.llvm.org/D122427#3420144 for more
+            // info.
+            max_atomic_width: Some(0),
+
+            // PSX does not support trap-on-condition instructions.
+            llvm_args: cvs!["-mno-check-zero-division"],
+            llvm_abiname: "o32".into(),
+            panic_strategy: PanicStrategy::Abort,
+            ..Default::default()
+        },
+    }
+}

compiler/rustc_target/src/spec/mod.rs

@@ -1222,6 +1222,7 @@ supported_targets! {
     ("armv7a-kmc-solid_asp3-eabihf", armv7a_kmc_solid_asp3_eabihf),
 
     ("mipsel-sony-psp", mipsel_sony_psp),
+    ("mipsel-sony-psx", mipsel_sony_psx),
     ("mipsel-unknown-none", mipsel_unknown_none),
     ("thumbv4t-none-eabi", thumbv4t_none_eabi),
     ("armv4t-none-eabi", armv4t_none_eabi),

src/bootstrap/bin/rustdoc.rs

@@ -55,13 +55,9 @@ fn main() {
         arg.push(&linker);
         cmd.arg(arg);
     }
-    if env::var_os("RUSTDOC_FUSE_LD_LLD").is_some() {
+    if let Ok(no_threads) = env::var("RUSTDOC_LLD_NO_THREADS") {
         cmd.arg("-Clink-arg=-fuse-ld=lld");
-        if cfg!(windows) {
+        cmd.arg(format!("-Clink-arg=-Wl,{}", no_threads));
-            cmd.arg("-Clink-arg=-Wl,/threads:1");
-        } else {
-            cmd.arg("-Clink-arg=-Wl,--threads=1");
-        }
     }
     // Cargo doesn't pass RUSTDOCFLAGS to proc_macros:
     // https://github.com/rust-lang/cargo/issues/4423

src/bootstrap/lib.rs

@@ -1152,8 +1152,8 @@ impl Build {
                 options[0] = Some("-Clink-arg=-fuse-ld=lld".to_string());
             }
 
-            let threads = if target.contains("windows") { "/threads:1" } else { "--threads=1" };
+            let no_threads = util::lld_flag_no_threads(target.contains("windows"));
-            options[1] = Some(format!("-Clink-arg=-Wl,{}", threads));
+            options[1] = Some(format!("-Clink-arg=-Wl,{}", no_threads));
         }
 
         IntoIterator::into_iter(options).flatten()

src/bootstrap/test.rs

@@ -771,7 +771,10 @@ impl Step for RustdocTheme {
             cmd.env("RUSTDOC_LINKER", linker);
         }
         if builder.is_fuse_ld_lld(self.compiler.host) {
-            cmd.env("RUSTDOC_FUSE_LD_LLD", "1");
+            cmd.env(
+                "RUSTDOC_LLD_NO_THREADS",
+                util::lld_flag_no_threads(self.compiler.host.contains("windows")),
+            );
         }
         try_run(builder, &mut cmd);
     }

src/bootstrap/util.rs

@@ -13,6 +13,7 @@ use std::time::{Instant, SystemTime, UNIX_EPOCH};
 
 use crate::builder::Builder;
 use crate::config::{Config, TargetSelection};
+use crate::OnceCell;
 
 /// A helper macro to `unwrap` a result except also print out details like:
 ///
@@ -607,3 +608,16 @@ pub fn get_clang_cl_resource_dir(clang_cl_path: &str) -> PathBuf {
     let clang_rt_dir = clang_rt_builtins.parent().expect("The clang lib folder should exist");
     clang_rt_dir.to_path_buf()
 }
+
+pub fn lld_flag_no_threads(is_windows: bool) -> &'static str {
+    static LLD_NO_THREADS: OnceCell<(&'static str, &'static str)> = OnceCell::new();
+    let (windows, other) = LLD_NO_THREADS.get_or_init(|| {
+        let out = output(Command::new("lld").arg("-flavor").arg("ld").arg("--version"));
+        let newer = match (out.find(char::is_numeric), out.find('.')) {
+            (Some(b), Some(e)) => out.as_str()[b..e].parse::<i32>().ok().unwrap_or(14) > 10,
+            _ => true,
+        };
+        if newer { ("/threads:1", "--threads=1") } else { ("/no-threads", "--no-threads") }
+    });
+    if is_windows { windows } else { other }
+}

src/doc/rustc/src/SUMMARY.md

@@ -29,6 +29,7 @@
     - [\*-kmc-solid_\*](platform-support/kmc-solid.md)
     - [m68k-unknown-linux-gnu](platform-support/m68k-unknown-linux-gnu.md)
     - [mips64-openwrt-linux-musl](platform-support/mips64-openwrt-linux-musl.md)
+    - [mipsel-sony-psx](platform-support/mipsel-sony-psx.md)
     - [nvptx64-nvidia-cuda](platform-support/nvptx64-nvidia-cuda.md)
     - [riscv32imac-unknown-xous-elf](platform-support/riscv32imac-unknown-xous-elf.md)
     - [*-pc-windows-gnullvm](platform-support/pc-windows-gnullvm.md)

src/doc/rustc/src/platform-support.md

@@ -260,6 +260,7 @@ target | std | host | notes
 `mips-unknown-linux-uclibc` | ✓ |  | MIPS Linux with uClibc
 [`mips64-openwrt-linux-musl`](platform-support/mips64-openwrt-linux-musl.md) | ? |  | MIPS64 for OpenWrt Linux MUSL
 `mipsel-sony-psp` | * |  | MIPS (LE) Sony PlayStation Portable (PSP)
+[`mipsel-sony-psx`](platform-support/mipsel-sony-psx.md) | * |  | MIPS (LE) Sony PlayStation 1 (PSX)
 `mipsel-unknown-linux-uclibc` | ✓ |  | MIPS (LE) Linux with uClibc
 `mipsel-unknown-none` | * |  | Bare MIPS (LE) softfloat
 `mipsisa32r6-unknown-linux-gnu` | ? |  |

src/doc/rustc/src/platform-support/mipsel-sony-psx.md

@@ -0,0 +1,49 @@
+# mipsel-sony-psx
+
+**Tier: 3**
+
+Sony PlayStation 1 (psx)
+
+## Designated Developer
+
+* [@ayrtonm](https://github.com/ayrtonm)
+
+## Requirements
+
+This target is cross-compiled.
+It has no special requirements for the host.
+
+## Building
+
+The target can be built by enabling it for a `rustc` build:
+
+```toml
+[build]
+build-stage = 1
+target = ["mipsel-sony-psx"]
+```
+
+## Cross-compilation
+
+This target can be cross-compiled from any host.
+
+## Testing
+
+Currently there is no support to run the rustc test suite for this target.
+
+## Building Rust programs
+
+Since it is Tier 3, rust doesn't ship pre-compiled artifacts for this target.
+
+Just use the `build-std` nightly cargo feature to build the `core` and `alloc` libraries:
+```shell
+cargo build -Zbuild-std=core,alloc --target mipsel-sony-psx
+```
+
+The command above generates an ELF. To generate binaries in the PSEXE format that emulators run, you can use [cargo-psx](https://github.com/ayrtonm/psx-sdk-rs#readme):
+
+```shell
+cargo psx build
+```
+
+or use `-Clink-arg=--oformat=binary` to produce a flat binary.

src/doc/unstable-book/src/language-features/extended-varargs-abi-support.md

@@ -0,0 +1,10 @@
+# `extended_varargs_abi_support`
+
+The tracking issue for this feature is: [#100189]
+
+[#100189]: https://github.com/rust-lang/rust/issues/100189
+
+------------------------
+
+This feature adds the possibility of using `sysv64`, `win64` or `efiapi` calling
+conventions on functions with varargs.

src/librustdoc/clean/inline.rs

@@ -323,6 +323,21 @@ pub(crate) fn build_impls(
     for &did in tcx.inherent_impls(did).iter() {
         build_impl(cx, parent_module, did, attrs, ret);
     }
+
+    // This pretty much exists expressly for `dyn Error` traits that exist in the `alloc` crate.
+    // See also:
+    //
+    // * https://github.com/rust-lang/rust/issues/103170 — where it didn't used to get documented
+    // * https://github.com/rust-lang/rust/pull/99917 — where the feature got used
+    // * https://github.com/rust-lang/rust/issues/53487 — overall tracking issue for Error
+    if tcx.has_attr(did, sym::rustc_has_incoherent_inherent_impls) {
+        use rustc_middle::ty::fast_reject::SimplifiedTypeGen::*;
+        let type_ =
+            if tcx.is_trait(did) { TraitSimplifiedType(did) } else { AdtSimplifiedType(did) };
+        for &did in tcx.incoherent_impls(type_) {
+            build_impl(cx, parent_module, did, attrs, ret);
+        }
+    }
 }
 
 /// `parent_module` refers to the parent of the re-export, not the original item

src/librustdoc/html/static/css/rustdoc.css

@@ -163,9 +163,6 @@ h1.fqn {
 	padding-bottom: 6px;
 	margin-bottom: 15px;
 }
-#toggle-all-docs {
-	text-decoration: none;
-}
 /* The only headings that get underlines are:
 	 Markdown-generated headings within the top-doc
 	 Rustdoc-generated h2 section headings (e.g. "Implementations", "Required Methods", etc)
@@ -209,7 +206,7 @@ ul.all-items {
 	font-family: "Fira Sans", Arial, NanumBarunGothic, sans-serif;
 }
 
-a#toggle-all-docs,
+#toggle-all-docs,
 a.anchor,
 .small-section-header a,
 #source-sidebar a,
@@ -299,6 +296,16 @@ button {
 	padding: 1px 6px;
 }
 
+button#toggle-all-docs {
+	padding: 0;
+	background: none;
+	border: none;
+	cursor: pointer;
+	/* iOS button gradient: https://stackoverflow.com/q/5438567 */
+	-webkit-appearance: none;
+	opacity: 1;
+}
+
 /* end tweaks for normalize.css 8 */
 
 .rustdoc {

src/librustdoc/html/templates/print_item.html

@@ -21,8 +21,8 @@
                 <a class="srclink" href="{{href|safe}}">source</a> · {# -#}
             {%- else -%}
         {%- endmatch -%}
-        <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs"> {#- -#}
+        <button id="toggle-all-docs" title="collapse all docs"> {#- -#}
-            [<span class="inner">&#x2212;</span>] {#- -#}
+            [<span>&#x2212;</span>] {#- -#}
-        </a> {#- -#}
+        </button> {#- -#}
     </span> {#- -#}
 </div> {#- -#}

src/test/mir-opt/building/enum_cast.bar.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `bar` 0 mir_map
+// MIR for `bar` after built
 
 fn bar(_1: Bar) -> usize {
     debug bar => _1;                     // in scope 0 at $DIR/enum_cast.rs:+0:8: +0:11

src/test/mir-opt/building/enum_cast.boo.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `boo` 0 mir_map
+// MIR for `boo` after built
 
 fn boo(_1: Boo) -> usize {
     debug boo => _1;                     // in scope 0 at $DIR/enum_cast.rs:+0:8: +0:11

src/test/mir-opt/building/enum_cast.droppy.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `droppy` 0 mir_map
+// MIR for `droppy` after built
 
 fn droppy() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/enum_cast.rs:+0:13: +0:13

src/test/mir-opt/building/enum_cast.foo.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `foo` 0 mir_map
+// MIR for `foo` after built
 
 fn foo(_1: Foo) -> usize {
     debug foo => _1;                     // in scope 0 at $DIR/enum_cast.rs:+0:8: +0:11

src/test/mir-opt/building/enum_cast.rs

@@ -1,6 +1,6 @@
-// EMIT_MIR enum_cast.foo.mir_map.0.mir
+// EMIT_MIR enum_cast.foo.built.after.mir
-// EMIT_MIR enum_cast.bar.mir_map.0.mir
+// EMIT_MIR enum_cast.bar.built.after.mir
-// EMIT_MIR enum_cast.boo.mir_map.0.mir
+// EMIT_MIR enum_cast.boo.built.after.mir
 
 enum Foo {
     A
@@ -27,7 +27,7 @@ fn boo(boo: Boo) -> usize {
     boo as usize
 }
 
-// EMIT_MIR enum_cast.droppy.mir_map.0.mir
+// EMIT_MIR enum_cast.droppy.built.after.mir
 enum Droppy {
     A, B, C
 }

src/test/mir-opt/building/issue-101867.rs

@@ -1,4 +1,4 @@
-// EMIT_MIR issue_101867.main.mir_map.0.mir
+// EMIT_MIR issue_101867.main.built.after.mir
 fn main() {
     let x: Option<u8> = Some(1);
     let Some(y) = x else {

src/test/mir-opt/building/issue-49232.rs

@@ -1,7 +1,7 @@
 // We must mark a variable whose initialization fails due to an
 // abort statement as StorageDead.
 
-// EMIT_MIR issue_49232.main.mir_map.0.mir
+// EMIT_MIR issue_49232.main.built.after.mir
 fn main() {
     loop {
         let beacon = {

src/test/mir-opt/building/issue_101867.main.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `main` 0 mir_map
+// MIR for `main` after built
 
 | User Type Annotations
 | 0: user_ty: Canonical { max_universe: U0, variables: [], value: Ty(std::option::Option<u8>) }, span: $DIR/issue-101867.rs:3:12: 3:22, inferred_ty: std::option::Option<u8>

src/test/mir-opt/building/issue_49232.main.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `main` 0 mir_map
+// MIR for `main` after built
 
 fn main() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/issue-49232.rs:+0:11: +0:11

src/test/mir-opt/building/match_false_edges.full_tested_match.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `full_tested_match` after PromoteTemps
+// MIR for `full_tested_match` after built
 
 fn full_tested_match() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/match_false_edges.rs:+0:28: +0:28
@@ -12,7 +12,6 @@ fn full_tested_match() -> () {
     let mut _8: i32;                     // in scope 0 at $DIR/match_false_edges.rs:+2:35: +2:36
     let _9: i32;                         // in scope 0 at $DIR/match_false_edges.rs:+3:14: +3:15
     let mut _10: i32;                    // in scope 0 at $DIR/match_false_edges.rs:+3:24: +3:25
-    let mut _11: &std::option::Option<i32>; // in scope 0 at $DIR/match_false_edges.rs:+2:14: +2:15
     scope 1 {
     }
     scope 2 {
@@ -34,7 +33,7 @@ fn full_tested_match() -> () {
 
     bb1: {
         _1 = (const 3_i32, const 3_i32); // scope 0 at $DIR/match_false_edges.rs:+4:17: +4:23
-        goto -> bb10;                    // scope 0 at $DIR/match_false_edges.rs:+4:17: +4:23
+        goto -> bb11;                    // scope 0 at $DIR/match_false_edges.rs:+4:17: +4:23
     }
 
     bb2: {
@@ -42,7 +41,7 @@ fn full_tested_match() -> () {
     }
 
     bb3: {
-        falseEdge -> [real: bb9, imaginary: bb1]; // scope 0 at $DIR/match_false_edges.rs:+3:9: +3:16
+        falseEdge -> [real: bb10, imaginary: bb1]; // scope 0 at $DIR/match_false_edges.rs:+3:9: +3:16
     }
 
     bb4: {
@@ -51,14 +50,10 @@ fn full_tested_match() -> () {
 
     bb5: {
         StorageLive(_6);                 // scope 0 at $DIR/match_false_edges.rs:+2:14: +2:15
-        _11 = const _;                   // scope 0 at $DIR/match_false_edges.rs:+2:14: +2:15
+        _6 = &((_2 as Some).0: i32);     // scope 0 at $DIR/match_false_edges.rs:+2:14: +2:15
-                                         // mir::Constant
-                                         // + span: $DIR/match_false_edges.rs:14:14: 14:15
-                                         // + literal: Const { ty: &Option<i32>, val: Unevaluated(full_tested_match, [], Some(promoted[0])) }
-        _6 = &(((*_11) as Some).0: i32); // scope 0 at $DIR/match_false_edges.rs:+2:14: +2:15
         _4 = &shallow _2;                // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:27
         StorageLive(_7);                 // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
-        _7 = guard() -> [return: bb6, unwind: bb11]; // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
+        _7 = guard() -> [return: bb6, unwind: bb12]; // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
                                          // mir::Constant
                                          // + span: $DIR/match_false_edges.rs:14:20: 14:25
                                          // + literal: Const { ty: fn() -> bool {guard}, val: Value(<ZST>) }
@@ -80,16 +75,20 @@ fn full_tested_match() -> () {
         StorageDead(_8);                 // scope 2 at $DIR/match_false_edges.rs:+2:36: +2:37
         StorageDead(_5);                 // scope 0 at $DIR/match_false_edges.rs:+2:36: +2:37
         StorageDead(_6);                 // scope 0 at $DIR/match_false_edges.rs:+2:36: +2:37
-        goto -> bb10;                    // scope 0 at $DIR/match_false_edges.rs:+2:36: +2:37
+        goto -> bb11;                    // scope 0 at $DIR/match_false_edges.rs:+2:36: +2:37
     }
 
     bb8: {
+        goto -> bb9;                     // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
+    }
+
+    bb9: {
         StorageDead(_7);                 // scope 0 at $DIR/match_false_edges.rs:+2:26: +2:27
         StorageDead(_6);                 // scope 0 at $DIR/match_false_edges.rs:+2:36: +2:37
         goto -> bb3;                     // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
     }
 
-    bb9: {
+    bb10: {
         StorageLive(_9);                 // scope 0 at $DIR/match_false_edges.rs:+3:14: +3:15
         _9 = ((_2 as Some).0: i32);      // scope 0 at $DIR/match_false_edges.rs:+3:14: +3:15
         StorageLive(_10);                // scope 3 at $DIR/match_false_edges.rs:+3:24: +3:25
@@ -97,17 +96,17 @@ fn full_tested_match() -> () {
         _1 = (const 2_i32, move _10);    // scope 3 at $DIR/match_false_edges.rs:+3:20: +3:26
         StorageDead(_10);                // scope 3 at $DIR/match_false_edges.rs:+3:25: +3:26
         StorageDead(_9);                 // scope 0 at $DIR/match_false_edges.rs:+3:25: +3:26
-        goto -> bb10;                    // scope 0 at $DIR/match_false_edges.rs:+3:25: +3:26
+        goto -> bb11;                    // scope 0 at $DIR/match_false_edges.rs:+3:25: +3:26
     }
 
-    bb10: {
+    bb11: {
         StorageDead(_2);                 // scope 0 at $DIR/match_false_edges.rs:+5:6: +5:7
         StorageDead(_1);                 // scope 0 at $DIR/match_false_edges.rs:+5:6: +5:7
         _0 = const ();                   // scope 0 at $DIR/match_false_edges.rs:+0:28: +6:2
         return;                          // scope 0 at $DIR/match_false_edges.rs:+6:2: +6:2
     }
 
-    bb11 (cleanup): {
+    bb12 (cleanup): {
         resume;                          // scope 0 at $DIR/match_false_edges.rs:+0:1: +6:2
     }
 }

src/test/mir-opt/building/match_false_edges.full_tested_match2.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `full_tested_match2` before PromoteTemps
+// MIR for `full_tested_match2` after built
 
 fn full_tested_match2() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/match_false_edges.rs:+0:29: +0:29
@@ -32,7 +32,7 @@ fn full_tested_match2() -> () {
     }
 
     bb1: {
-        falseEdge -> [real: bb9, imaginary: bb3]; // scope 0 at $DIR/match_false_edges.rs:+3:9: +3:13
+        falseEdge -> [real: bb10, imaginary: bb3]; // scope 0 at $DIR/match_false_edges.rs:+3:9: +3:13
     }
 
     bb2: {
@@ -47,7 +47,7 @@ fn full_tested_match2() -> () {
         _1 = (const 2_i32, move _10);    // scope 3 at $DIR/match_false_edges.rs:+4:20: +4:26
         StorageDead(_10);                // scope 3 at $DIR/match_false_edges.rs:+4:25: +4:26
         StorageDead(_9);                 // scope 0 at $DIR/match_false_edges.rs:+4:25: +4:26
-        goto -> bb10;                    // scope 0 at $DIR/match_false_edges.rs:+4:25: +4:26
+        goto -> bb11;                    // scope 0 at $DIR/match_false_edges.rs:+4:25: +4:26
     }
 
     bb4: {
@@ -59,7 +59,7 @@ fn full_tested_match2() -> () {
         _6 = &((_2 as Some).0: i32);     // scope 0 at $DIR/match_false_edges.rs:+2:14: +2:15
         _4 = &shallow _2;                // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:27
         StorageLive(_7);                 // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
-        _7 = guard() -> [return: bb6, unwind: bb11]; // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
+        _7 = guard() -> [return: bb6, unwind: bb12]; // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
                                          // mir::Constant
                                          // + span: $DIR/match_false_edges.rs:25:20: 25:25
                                          // + literal: Const { ty: fn() -> bool {guard}, val: Value(<ZST>) }
@@ -81,28 +81,32 @@ fn full_tested_match2() -> () {
         StorageDead(_8);                 // scope 2 at $DIR/match_false_edges.rs:+2:36: +2:37
         StorageDead(_5);                 // scope 0 at $DIR/match_false_edges.rs:+2:36: +2:37
         StorageDead(_6);                 // scope 0 at $DIR/match_false_edges.rs:+2:36: +2:37
-        goto -> bb10;                    // scope 0 at $DIR/match_false_edges.rs:+2:36: +2:37
+        goto -> bb11;                    // scope 0 at $DIR/match_false_edges.rs:+2:36: +2:37
     }
 
     bb8: {
+        goto -> bb9;                     // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
+    }
+
+    bb9: {
         StorageDead(_7);                 // scope 0 at $DIR/match_false_edges.rs:+2:26: +2:27
         StorageDead(_6);                 // scope 0 at $DIR/match_false_edges.rs:+2:36: +2:37
         falseEdge -> [real: bb3, imaginary: bb1]; // scope 0 at $DIR/match_false_edges.rs:+2:20: +2:27
     }
 
-    bb9: {
+    bb10: {
         _1 = (const 3_i32, const 3_i32); // scope 0 at $DIR/match_false_edges.rs:+3:17: +3:23
-        goto -> bb10;                    // scope 0 at $DIR/match_false_edges.rs:+3:17: +3:23
+        goto -> bb11;                    // scope 0 at $DIR/match_false_edges.rs:+3:17: +3:23
     }
 
-    bb10: {
+    bb11: {
         StorageDead(_2);                 // scope 0 at $DIR/match_false_edges.rs:+5:6: +5:7
         StorageDead(_1);                 // scope 0 at $DIR/match_false_edges.rs:+5:6: +5:7
         _0 = const ();                   // scope 0 at $DIR/match_false_edges.rs:+0:29: +6:2
         return;                          // scope 0 at $DIR/match_false_edges.rs:+6:2: +6:2
     }
 
-    bb11 (cleanup): {
+    bb12 (cleanup): {
         resume;                          // scope 0 at $DIR/match_false_edges.rs:+0:1: +6:2
     }
 }

src/test/mir-opt/building/match_false_edges.main.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `main` before PromoteTemps
+// MIR for `main` after built
 
 fn main() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/match_false_edges.rs:+0:11: +0:11
@@ -43,41 +43,54 @@ fn main() -> () {
     }
 
     bb1: {
-        falseEdge -> [real: bb9, imaginary: bb4]; // scope 0 at $DIR/match_false_edges.rs:+3:9: +3:11
+        falseEdge -> [real: bb13, imaginary: bb6]; // scope 0 at $DIR/match_false_edges.rs:+3:9: +3:11
     }
 
     bb2: {
-        falseEdge -> [real: bb5, imaginary: bb1]; // scope 0 at $DIR/match_false_edges.rs:+2:9: +2:17
+        falseEdge -> [real: bb8, imaginary: bb1]; // scope 0 at $DIR/match_false_edges.rs:+2:9: +2:17
     }
 
     bb3: {
+        goto -> bb1;                     // scope 0 at $DIR/match_false_edges.rs:+1:13: +1:26
+    }
+
+    bb4: {
+        _3 = discriminant(_2);           // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:26
+        switchInt(move _3) -> [1_isize: bb6, otherwise: bb5]; // scope 0 at $DIR/match_false_edges.rs:+1:13: +1:26
+    }
+
+    bb5: {
         StorageLive(_14);                // scope 0 at $DIR/match_false_edges.rs:+5:9: +5:11
         _14 = _2;                        // scope 0 at $DIR/match_false_edges.rs:+5:9: +5:11
         _1 = const 4_i32;                // scope 5 at $DIR/match_false_edges.rs:+5:15: +5:16
         StorageDead(_14);                // scope 0 at $DIR/match_false_edges.rs:+5:15: +5:16
-        goto -> bb14;                    // scope 0 at $DIR/match_false_edges.rs:+5:15: +5:16
+        goto -> bb19;                    // scope 0 at $DIR/match_false_edges.rs:+5:15: +5:16
     }
 
-    bb4: {
+    bb6: {
-        falseEdge -> [real: bb10, imaginary: bb3]; // scope 0 at $DIR/match_false_edges.rs:+4:9: +4:16
+        falseEdge -> [real: bb14, imaginary: bb5]; // scope 0 at $DIR/match_false_edges.rs:+4:9: +4:16
     }
 
-    bb5: {
+    bb7: {
+        goto -> bb5;                     // scope 0 at $DIR/match_false_edges.rs:+1:13: +1:26
+    }
+
+    bb8: {
         StorageLive(_7);                 // scope 0 at $DIR/match_false_edges.rs:+2:14: +2:16
         _7 = &((_2 as Some).0: i32);     // scope 0 at $DIR/match_false_edges.rs:+2:14: +2:16
         _5 = &shallow _2;                // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:26
         StorageLive(_8);                 // scope 0 at $DIR/match_false_edges.rs:+2:21: +2:28
-        _8 = guard() -> [return: bb6, unwind: bb15]; // scope 0 at $DIR/match_false_edges.rs:+2:21: +2:28
+        _8 = guard() -> [return: bb9, unwind: bb20]; // scope 0 at $DIR/match_false_edges.rs:+2:21: +2:28
                                          // mir::Constant
                                          // + span: $DIR/match_false_edges.rs:34:21: 34:26
                                          // + literal: Const { ty: fn() -> bool {guard}, val: Value(<ZST>) }
     }
 
-    bb6: {
+    bb9: {
-        switchInt(move _8) -> [false: bb8, otherwise: bb7]; // scope 0 at $DIR/match_false_edges.rs:+2:21: +2:28
+        switchInt(move _8) -> [false: bb11, otherwise: bb10]; // scope 0 at $DIR/match_false_edges.rs:+2:21: +2:28
     }
 
-    bb7: {
+    bb10: {
         StorageDead(_8);                 // scope 0 at $DIR/match_false_edges.rs:+2:27: +2:28
         FakeRead(ForMatchGuard, _5);     // scope 0 at $DIR/match_false_edges.rs:+2:27: +2:28
         FakeRead(ForGuardBinding, _7);   // scope 0 at $DIR/match_false_edges.rs:+2:27: +2:28
@@ -86,41 +99,45 @@ fn main() -> () {
         _1 = const 1_i32;                // scope 2 at $DIR/match_false_edges.rs:+2:32: +2:33
         StorageDead(_6);                 // scope 0 at $DIR/match_false_edges.rs:+2:32: +2:33
         StorageDead(_7);                 // scope 0 at $DIR/match_false_edges.rs:+2:32: +2:33
-        goto -> bb14;                    // scope 0 at $DIR/match_false_edges.rs:+2:32: +2:33
+        goto -> bb19;                    // scope 0 at $DIR/match_false_edges.rs:+2:32: +2:33
     }
 
-    bb8: {
+    bb11: {
+        goto -> bb12;                    // scope 0 at $DIR/match_false_edges.rs:+2:21: +2:28
+    }
+
+    bb12: {
         StorageDead(_8);                 // scope 0 at $DIR/match_false_edges.rs:+2:27: +2:28
         StorageDead(_7);                 // scope 0 at $DIR/match_false_edges.rs:+2:32: +2:33
-        falseEdge -> [real: bb1, imaginary: bb1]; // scope 0 at $DIR/match_false_edges.rs:+2:21: +2:28
+        falseEdge -> [real: bb3, imaginary: bb1]; // scope 0 at $DIR/match_false_edges.rs:+2:21: +2:28
     }
 
-    bb9: {
+    bb13: {
         StorageLive(_9);                 // scope 0 at $DIR/match_false_edges.rs:+3:9: +3:11
         _9 = _2;                         // scope 0 at $DIR/match_false_edges.rs:+3:9: +3:11
         _1 = const 2_i32;                // scope 3 at $DIR/match_false_edges.rs:+3:15: +3:16
         StorageDead(_9);                 // scope 0 at $DIR/match_false_edges.rs:+3:15: +3:16
-        goto -> bb14;                    // scope 0 at $DIR/match_false_edges.rs:+3:15: +3:16
+        goto -> bb19;                    // scope 0 at $DIR/match_false_edges.rs:+3:15: +3:16
     }
 
-    bb10: {
+    bb14: {
         StorageLive(_11);                // scope 0 at $DIR/match_false_edges.rs:+4:14: +4:15
         _11 = &((_2 as Some).0: i32);    // scope 0 at $DIR/match_false_edges.rs:+4:14: +4:15
         _5 = &shallow _2;                // scope 0 at $DIR/match_false_edges.rs:+1:19: +1:26
         StorageLive(_12);                // scope 0 at $DIR/match_false_edges.rs:+4:20: +4:29
         StorageLive(_13);                // scope 0 at $DIR/match_false_edges.rs:+4:27: +4:28
         _13 = (*_11);                    // scope 0 at $DIR/match_false_edges.rs:+4:27: +4:28
-        _12 = guard2(move _13) -> [return: bb11, unwind: bb15]; // scope 0 at $DIR/match_false_edges.rs:+4:20: +4:29
+        _12 = guard2(move _13) -> [return: bb15, unwind: bb20]; // scope 0 at $DIR/match_false_edges.rs:+4:20: +4:29
                                          // mir::Constant
                                          // + span: $DIR/match_false_edges.rs:36:20: 36:26
                                          // + literal: Const { ty: fn(i32) -> bool {guard2}, val: Value(<ZST>) }
     }
 
-    bb11: {
+    bb15: {
-        switchInt(move _12) -> [false: bb13, otherwise: bb12]; // scope 0 at $DIR/match_false_edges.rs:+4:20: +4:29
+        switchInt(move _12) -> [false: bb17, otherwise: bb16]; // scope 0 at $DIR/match_false_edges.rs:+4:20: +4:29
     }
 
-    bb12: {
+    bb16: {
         StorageDead(_13);                // scope 0 at $DIR/match_false_edges.rs:+4:28: +4:29
         StorageDead(_12);                // scope 0 at $DIR/match_false_edges.rs:+4:28: +4:29
         FakeRead(ForMatchGuard, _5);     // scope 0 at $DIR/match_false_edges.rs:+4:28: +4:29
@@ -130,24 +147,28 @@ fn main() -> () {
         _1 = const 3_i32;                // scope 4 at $DIR/match_false_edges.rs:+4:33: +4:34
         StorageDead(_10);                // scope 0 at $DIR/match_false_edges.rs:+4:33: +4:34
         StorageDead(_11);                // scope 0 at $DIR/match_false_edges.rs:+4:33: +4:34
-        goto -> bb14;                    // scope 0 at $DIR/match_false_edges.rs:+4:33: +4:34
+        goto -> bb19;                    // scope 0 at $DIR/match_false_edges.rs:+4:33: +4:34
     }
 
-    bb13: {
+    bb17: {
+        goto -> bb18;                    // scope 0 at $DIR/match_false_edges.rs:+4:20: +4:29
+    }
+
+    bb18: {
         StorageDead(_13);                // scope 0 at $DIR/match_false_edges.rs:+4:28: +4:29
         StorageDead(_12);                // scope 0 at $DIR/match_false_edges.rs:+4:28: +4:29
         StorageDead(_11);                // scope 0 at $DIR/match_false_edges.rs:+4:33: +4:34
-        falseEdge -> [real: bb3, imaginary: bb3]; // scope 0 at $DIR/match_false_edges.rs:+4:20: +4:29
+        falseEdge -> [real: bb7, imaginary: bb5]; // scope 0 at $DIR/match_false_edges.rs:+4:20: +4:29
     }
 
-    bb14: {
+    bb19: {
         StorageDead(_2);                 // scope 0 at $DIR/match_false_edges.rs:+6:6: +6:7
         StorageDead(_1);                 // scope 0 at $DIR/match_false_edges.rs:+6:6: +6:7
         _0 = const ();                   // scope 0 at $DIR/match_false_edges.rs:+0:11: +7:2
         return;                          // scope 0 at $DIR/match_false_edges.rs:+7:2: +7:2
     }
 
-    bb15 (cleanup): {
+    bb20 (cleanup): {
         resume;                          // scope 0 at $DIR/match_false_edges.rs:+0:1: +7:2
     }
 }

src/test/mir-opt/building/match_false_edges.rs

@@ -8,7 +8,7 @@ fn guard2(_: i32) -> bool {
 
 // no_mangle to make sure this gets instantiated even in an executable.
 #[no_mangle]
-// EMIT_MIR match_false_edges.full_tested_match.PromoteTemps.after.mir
+// EMIT_MIR match_false_edges.full_tested_match.built.after.mir
 pub fn full_tested_match() {
     let _ = match Some(42) {
         Some(x) if guard() => (1, x),
@@ -19,7 +19,7 @@ pub fn full_tested_match() {
 
 // no_mangle to make sure this gets instantiated even in an executable.
 #[no_mangle]
-// EMIT_MIR match_false_edges.full_tested_match2.PromoteTemps.before.mir
+// EMIT_MIR match_false_edges.full_tested_match2.built.after.mir
 pub fn full_tested_match2() {
     let _ = match Some(42) {
         Some(x) if guard() => (1, x),
@@ -28,7 +28,7 @@ pub fn full_tested_match2() {
     };
 }
 
-// EMIT_MIR match_false_edges.main.PromoteTemps.before.mir
+// EMIT_MIR match_false_edges.main.built.after.mir
 fn main() {
     let _ = match Some(1) {
         Some(_w) if guard() => 1,

src/test/mir-opt/building/receiver-ptr-mutability.rs

@@ -1,4 +1,4 @@
-// EMIT_MIR receiver_ptr_mutability.main.mir_map.0.mir
+// EMIT_MIR receiver_ptr_mutability.main.built.after.mir
 
 #![feature(arbitrary_self_types)]
 

src/test/mir-opt/building/receiver_ptr_mutability.main.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `main` 0 mir_map
+// MIR for `main` after built
 
 | User Type Annotations
 | 0: user_ty: Canonical { max_universe: U0, variables: [], value: Ty(*mut Test) }, span: $DIR/receiver-ptr-mutability.rs:14:14: 14:23, inferred_ty: *mut Test

src/test/mir-opt/building/simple-match.rs

@@ -1,7 +1,7 @@
 // Test that we don't generate unnecessarily large MIR for very simple matches
 
 
-// EMIT_MIR simple_match.match_bool.mir_map.0.mir
+// EMIT_MIR simple_match.match_bool.built.after.mir
 fn match_bool(x: bool) -> usize {
     match x {
         true => 10,

src/test/mir-opt/building/simple_match.match_bool.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `match_bool` 0 mir_map
+// MIR for `match_bool` after built
 
 fn match_bool(_1: bool) -> usize {
     debug x => _1;                       // in scope 0 at $DIR/simple-match.rs:+0:15: +0:16

src/test/mir-opt/building/storage_live_dead_in_statics.XXX.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `XXX` 0 mir_map
+// MIR for `XXX` after built
 
 static XXX: &Foo = {
     let mut _0: &Foo;                    // return place in scope 0 at $DIR/storage_live_dead_in_statics.rs:+0:13: +0:25

src/test/mir-opt/building/storage_live_dead_in_statics.rs

@@ -1,7 +1,7 @@
 // Check that when we compile the static `XXX` into MIR, we do not
 // generate `StorageStart` or `StorageEnd` statements.
 
-// EMIT_MIR storage_live_dead_in_statics.XXX.mir_map.0.mir
+// EMIT_MIR storage_live_dead_in_statics.XXX.built.after.mir
 static XXX: &'static Foo = &Foo {
     tup: "hi",
     data: &[

src/test/mir-opt/building/uniform_array_move_out.move_out_by_subslice.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `move_out_by_subslice` 0 mir_map
+// MIR for `move_out_by_subslice` after built
 
 fn move_out_by_subslice() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/uniform_array_move_out.rs:+0:27: +0:27

src/test/mir-opt/building/uniform_array_move_out.move_out_from_end.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `move_out_from_end` 0 mir_map
+// MIR for `move_out_from_end` after built
 
 fn move_out_from_end() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/uniform_array_move_out.rs:+0:24: +0:24

src/test/mir-opt/building/uniform_array_move_out.rs

@@ -1,12 +1,12 @@
 #![feature(box_syntax)]
 
-// EMIT_MIR uniform_array_move_out.move_out_from_end.mir_map.0.mir
+// EMIT_MIR uniform_array_move_out.move_out_from_end.built.after.mir
 fn move_out_from_end() {
     let a = [box 1, box 2];
     let [.., _y] = a;
 }
 
-// EMIT_MIR uniform_array_move_out.move_out_by_subslice.mir_map.0.mir
+// EMIT_MIR uniform_array_move_out.move_out_by_subslice.built.after.mir
 fn move_out_by_subslice() {
     let a = [box 1, box 2];
     let [_y @ ..] = a;

src/test/mir-opt/const-promotion-extern-static.rs

@@ -12,7 +12,7 @@ static mut BAR: *const &i32 = [&Y].as_ptr();
 // EMIT_MIR const_promotion_extern_static.FOO-promoted[0].SimplifyCfg-elaborate-drops.after.mir
 static mut FOO: *const &i32 = [unsafe { &X }].as_ptr();
 
-// EMIT_MIR const_promotion_extern_static.BOP.mir_map.0.mir
+// EMIT_MIR const_promotion_extern_static.BOP.built.after.mir
 static BOP: &i32 = &13;
 
 fn main() {}

src/test/mir-opt/const_promotion_extern_static.BOP.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `BOP` 0 mir_map
+// MIR for `BOP` after built
 
 static BOP: &i32 = {
     let mut _0: &i32;                    // return place in scope 0 at $DIR/const-promotion-extern-static.rs:+0:13: +0:17

src/test/mir-opt/graphviz.rs

@@ -1,5 +1,5 @@
 // Test graphviz output
 // compile-flags: -Z dump-mir-graphviz
 
-// EMIT_MIR graphviz.main.mir_map.0.dot
+// EMIT_MIR graphviz.main.built.after.dot
 fn main() {}

src/test/mir-opt/issue-72181-1.rs

@@ -6,12 +6,12 @@
 
 enum Void {}
 
-// EMIT_MIR issue_72181_1.f.mir_map.0.mir
+// EMIT_MIR issue_72181_1.f.built.after.mir
 fn f(v: Void) -> ! {
     match v {}
 }
 
-// EMIT_MIR issue_72181_1.main.mir_map.0.mir
+// EMIT_MIR issue_72181_1.main.built.after.mir
 fn main() {
     let v: Void = unsafe {
         std::mem::transmute::<(), Void>(())

src/test/mir-opt/issue-72181.rs

@@ -12,14 +12,14 @@ union Foo {
 }
 
 
-// EMIT_MIR issue_72181.foo.mir_map.0.mir
+// EMIT_MIR issue_72181.foo.built.after.mir
 fn foo(xs: [(Never, u32); 1]) -> u32 { xs[0].1 }
 
-// EMIT_MIR issue_72181.bar.mir_map.0.mir
+// EMIT_MIR issue_72181.bar.built.after.mir
 fn bar([(_, x)]: [(Never, u32); 1]) -> u32 { x }
 
 
-// EMIT_MIR issue_72181.main.mir_map.0.mir
+// EMIT_MIR issue_72181.main.built.after.mir
 fn main() {
     let _ = mem::size_of::<Foo>();
 

src/test/mir-opt/issue-91633.rs

@@ -1,5 +1,5 @@
 // compile-flags: -Z mir-opt-level=0
-// EMIT_MIR issue_91633.hey.mir_map.0.mir
+// EMIT_MIR issue_91633.hey.built.after.mir
 fn hey<T> (it: &[T])
  where
      [T] : std::ops::Index<usize>,
@@ -7,7 +7,7 @@ fn hey<T> (it: &[T])
      let _ = &it[0];
  }
 
-// EMIT_MIR issue_91633.bar.mir_map.0.mir
+// EMIT_MIR issue_91633.bar.built.after.mir
 fn bar<T> (it: Box<[T]>)
  where
      [T] : std::ops::Index<usize>,
@@ -15,14 +15,14 @@ fn bar<T> (it: Box<[T]>)
      let _ = it[0];
  }
 
-// EMIT_MIR issue_91633.fun.mir_map.0.mir
+// EMIT_MIR issue_91633.fun.built.after.mir
 fn fun<T> (it: &[T]) -> &T
  {
      let f = &it[0];
      f
  }
 
-// EMIT_MIR issue_91633.foo.mir_map.0.mir
+// EMIT_MIR issue_91633.foo.built.after.mir
 fn foo<T: Clone> (it: Box<[T]>) -> T
  {
      let f = it[0].clone();

src/test/mir-opt/issue-99325.rs

@@ -5,7 +5,7 @@ pub fn function_with_bytes<const BYTES: &'static [u8; 4]>() -> &'static [u8] {
     BYTES
 }
 
-// EMIT_MIR issue_99325.main.mir_map.0.mir
+// EMIT_MIR issue_99325.main.built.after.mir
 pub fn main() {
     assert_eq!(function_with_bytes::<b"AAAA">(), &[0x41, 0x41, 0x41, 0x41]);
     assert_eq!(function_with_bytes::<{ &[0x41, 0x41, 0x41, 0x41] }>(), b"AAAA");

src/test/mir-opt/issue_72181.bar.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `bar` 0 mir_map
+// MIR for `bar` after built
 
 fn bar(_1: [(Never, u32); 1]) -> u32 {
     let mut _0: u32;                     // return place in scope 0 at $DIR/issue-72181.rs:+0:40: +0:43

src/test/mir-opt/issue_72181.foo.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `foo` 0 mir_map
+// MIR for `foo` after built
 
 fn foo(_1: [(Never, u32); 1]) -> u32 {
     debug xs => _1;                      // in scope 0 at $DIR/issue-72181.rs:+0:8: +0:10

src/test/mir-opt/issue_72181.main.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `main` 0 mir_map
+// MIR for `main` after built
 
 fn main() -> () {
     let mut _0: ();                      // return place in scope 0 at $DIR/issue-72181.rs:+0:11: +0:11

src/test/mir-opt/issue_72181_1.f.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `f` 0 mir_map
+// MIR for `f` after built
 
 fn f(_1: Void) -> ! {
     debug v => _1;                       // in scope 0 at $DIR/issue-72181-1.rs:+0:6: +0:7

src/test/mir-opt/issue_72181_1.main.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `main` 0 mir_map
+// MIR for `main` after built
 
 | User Type Annotations
 | 0: user_ty: Canonical { max_universe: U0, variables: [], value: Ty(Void) }, span: $DIR/issue-72181-1.rs:16:12: 16:16, inferred_ty: Void

src/test/mir-opt/issue_91633.bar.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `bar` 0 mir_map
+// MIR for `bar` after built
 
 fn bar(_1: Box<[T]>) -> () {
     debug it => _1;                      // in scope 0 at $DIR/issue-91633.rs:+0:12: +0:14

src/test/mir-opt/issue_91633.foo.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `foo` 0 mir_map
+// MIR for `foo` after built
 
 fn foo(_1: Box<[T]>) -> T {
     debug it => _1;                      // in scope 0 at $DIR/issue-91633.rs:+0:19: +0:21

src/test/mir-opt/issue_91633.fun.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `fun` 0 mir_map
+// MIR for `fun` after built
 
 fn fun(_1: &[T]) -> &T {
     debug it => _1;                      // in scope 0 at $DIR/issue-91633.rs:+0:12: +0:14

src/test/mir-opt/issue_91633.hey.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `hey` 0 mir_map
+// MIR for `hey` after built
 
 fn hey(_1: &[T]) -> () {
     debug it => _1;                      // in scope 0 at $DIR/issue-91633.rs:+0:12: +0:14

src/test/mir-opt/issue_99325.main.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `main` 0 mir_map
+// MIR for `main` after built
 
 | User Type Annotations
 | 0: user_ty: Canonical { max_universe: U0, variables: [], value: TypeOf(DefId(0:3 ~ issue_99325[8f58]::function_with_bytes), UserSubsts { substs: [Const { ty: &'static [u8; 4], kind: Value(Branch([Leaf(0x41), Leaf(0x41), Leaf(0x41), Leaf(0x41)])) }], user_self_ty: None }) }, span: $DIR/issue-99325.rs:10:16: 10:46, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">}

src/test/mir-opt/spanview-block.rs

@@ -1,5 +1,5 @@
 // Test spanview block output
 // compile-flags: -Z dump-mir-spanview=block
 
-// EMIT_MIR spanview_block.main.mir_map.0.html
+// EMIT_MIR spanview_block.main.built.after.html
 fn main() {}

src/test/mir-opt/spanview-statement.rs

@@ -1,5 +1,5 @@
 // Test spanview output (the default value for `-Z dump-mir-spanview` is "statement")
 // compile-flags: -Z dump-mir-spanview
 
-// EMIT_MIR spanview_statement.main.mir_map.0.html
+// EMIT_MIR spanview_statement.main.built.after.html
 fn main() {}

src/test/mir-opt/spanview-terminator.rs

@@ -1,5 +1,5 @@
 // Test spanview terminator output
 // compile-flags: -Z dump-mir-spanview=terminator
 
-// EMIT_MIR spanview_terminator.main.mir_map.0.html
+// EMIT_MIR spanview_terminator.main.built.after.html
 fn main() {}

src/test/mir-opt/spanview_block.main.built.after.html

@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <head>
-<title>spanview_block.main.mir_map.0</title>
+<title>spanview_block.main.built.after</title>
 <style>
     .line {
         counter-increment: line;

src/test/mir-opt/spanview_statement.main.built.after.html

@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <head>
-<title>spanview_statement.main.mir_map.0</title>
+<title>spanview_statement.main.built.after</title>
 <style>
     .line {
         counter-increment: line;

src/test/mir-opt/spanview_terminator.main.built.after.html

@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <head>
-<title>spanview_terminator.main.mir_map.0</title>
+<title>spanview_terminator.main.built.after</title>
 <style>
     .line {
         counter-increment: line;

src/test/mir-opt/unusual-item-types.rs

@@ -5,19 +5,19 @@
 
 struct A;
 
-// EMIT_MIR unusual_item_types.{impl#0}-ASSOCIATED_CONSTANT.mir_map.0.mir
+// EMIT_MIR unusual_item_types.{impl#0}-ASSOCIATED_CONSTANT.built.after.mir
 impl A {
     const ASSOCIATED_CONSTANT: i32 = 2;
 }
 
 // See #59021
-// EMIT_MIR unusual_item_types.Test-X-{constructor#0}.mir_map.0.mir
+// EMIT_MIR unusual_item_types.Test-X-{constructor#0}.built.after.mir
 enum Test {
     X(usize),
     Y { a: usize },
 }
 
-// EMIT_MIR unusual_item_types.E-V-{constant#0}.mir_map.0.mir
+// EMIT_MIR unusual_item_types.E-V-{constant#0}.built.after.mir
 enum E {
     V = 5,
 }

src/test/mir-opt/unusual_item_types.E-V-{constant#0}.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `E::V::{constant#0}` 0 mir_map
+// MIR for `E::V::{constant#0}` after built
 
 E::V::{constant#0}: isize = {
     let mut _0: isize;                   // return place in scope 0 at $DIR/unusual-item-types.rs:+0:9: +0:10

src/test/mir-opt/unusual_item_types.Test-X-{constructor#0}.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `Test::X` 0 mir_map
+// MIR for `Test::X` after built
 
 fn Test::X(_1: usize) -> Test {
     let mut _0: Test;                    // return place in scope 0 at $DIR/unusual-item-types.rs:+0:5: +0:6

src/test/mir-opt/unusual_item_types.{impl#0}-ASSOCIATED_CONSTANT.built.after.mir

@@ -1,4 +1,4 @@
-// MIR for `<impl at $DIR/unusual-item-types.rs:9:1: 9:7>::ASSOCIATED_CONSTANT` 0 mir_map
+// MIR for `<impl at $DIR/unusual-item-types.rs:9:1: 9:7>::ASSOCIATED_CONSTANT` after built
 
 const <impl at $DIR/unusual-item-types.rs:9:1: 9:7>::ASSOCIATED_CONSTANT: i32 = {
     let mut _0: i32;                     // return place in scope 0 at $DIR/unusual-item-types.rs:+0:32: +0:35

src/test/rustdoc-js/reexport.js

@@ -0,0 +1,17 @@
+// exact-check
+
+const QUERY = ['Subscriber', 'AnotherOne'];
+
+const EXPECTED = [
+    {
+        'others': [
+            { 'path': 'reexport::fmt', 'name': 'Subscriber' },
+            { 'path': 'reexport', 'name': 'FmtSubscriber' },
+        ],
+    },
+    {
+        'others': [
+            { 'path': 'reexport', 'name': 'AnotherOne' },
+        ],
+    },
+];

src/test/rustdoc-js/reexport.rs

@@ -0,0 +1,11 @@
+// This test enforces that the (renamed) reexports are present in the search results.
+
+pub mod fmt {
+    pub struct Subscriber;
+}
+mod foo {
+    pub struct AnotherOne;
+}
+
+pub use foo::AnotherOne;
+pub use fmt::Subscriber as FmtSubscriber;

src/test/rustdoc/auxiliary/incoherent-impl-types.rs

@@ -0,0 +1,7 @@
+#![feature(rustc_attrs)]
+
+#[rustc_has_incoherent_inherent_impls]
+pub trait FooTrait {}
+
+#[rustc_has_incoherent_inherent_impls]
+pub struct FooStruct;

src/test/rustdoc/rustc-incoherent-impls.rs

@@ -0,0 +1,28 @@
+// aux-build:incoherent-impl-types.rs
+// build-aux-docs
+
+#![crate_name = "foo"]
+#![feature(rustc_attrs)]
+
+extern crate incoherent_impl_types;
+
+// The only way this actually shows up is if the type gets inlined.
+#[doc(inline)]
+pub use incoherent_impl_types::FooTrait;
+
+// @has foo/trait.FooTrait.html
+// @count - '//section[@id="method.do_something"]' 1
+impl dyn FooTrait {
+    #[rustc_allow_incoherent_impl]
+    pub fn do_something() {}
+}
+
+#[doc(inline)]
+pub use incoherent_impl_types::FooStruct;
+
+// @has foo/struct.FooStruct.html
+// @count - '//section[@id="method.do_something"]' 1
+impl FooStruct {
+    #[rustc_allow_incoherent_impl]
+    pub fn do_something() {}
+}

src/test/ui/c-variadic/feature-gate-extended_varargs_abi_support.rs

@@ -0,0 +1,19 @@
+#![feature(abi_efiapi)]
+
+fn efiapi(f: extern "efiapi" fn(usize, ...)) {
+    //~^ ERROR: C-variadic function must have a compatible calling convention, like `C` or `cdecl`
+    //~^^ ERROR: using calling conventions other than `C` or `cdecl` for varargs functions is unstable
+    f(22, 44);
+}
+fn sysv(f: extern "sysv64" fn(usize, ...)) {
+    //~^ ERROR: C-variadic function must have a compatible calling convention, like `C` or `cdecl`
+    //~^^ ERROR: using calling conventions other than `C` or `cdecl` for varargs functions is unstable
+    f(22, 44);
+}
+fn win(f: extern "win64" fn(usize, ...)) {
+    //~^ ERROR: C-variadic function must have a compatible calling convention, like `C` or `cdecl`
+    //~^^ ERROR: using calling conventions other than `C` or `cdecl` for varargs functions is unstable
+    f(22, 44);
+}
+
+fn main() {}

src/test/ui/c-variadic/feature-gate-extended_varargs_abi_support.stderr

@@ -0,0 +1,49 @@
+error[E0658]: using calling conventions other than `C` or `cdecl` for varargs functions is unstable
+  --> $DIR/feature-gate-extended_varargs_abi_support.rs:3:14
+   |
+LL | fn efiapi(f: extern "efiapi" fn(usize, ...)) {
+   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #100189 <https://github.com/rust-lang/rust/issues/100189> for more information
+   = help: add `#![feature(extended_varargs_abi_support)]` to the crate attributes to enable
+
+error[E0045]: C-variadic function must have a compatible calling convention, like `C` or `cdecl`
+  --> $DIR/feature-gate-extended_varargs_abi_support.rs:3:14
+   |
+LL | fn efiapi(f: extern "efiapi" fn(usize, ...)) {
+   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C-variadic function must have a compatible calling convention
+
+error[E0658]: using calling conventions other than `C` or `cdecl` for varargs functions is unstable
+  --> $DIR/feature-gate-extended_varargs_abi_support.rs:8:12
+   |
+LL | fn sysv(f: extern "sysv64" fn(usize, ...)) {
+   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #100189 <https://github.com/rust-lang/rust/issues/100189> for more information
+   = help: add `#![feature(extended_varargs_abi_support)]` to the crate attributes to enable
+
+error[E0045]: C-variadic function must have a compatible calling convention, like `C` or `cdecl`
+  --> $DIR/feature-gate-extended_varargs_abi_support.rs:8:12
+   |
+LL | fn sysv(f: extern "sysv64" fn(usize, ...)) {
+   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C-variadic function must have a compatible calling convention
+
+error[E0658]: using calling conventions other than `C` or `cdecl` for varargs functions is unstable
+  --> $DIR/feature-gate-extended_varargs_abi_support.rs:13:11
+   |
+LL | fn win(f: extern "win64" fn(usize, ...)) {
+   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #100189 <https://github.com/rust-lang/rust/issues/100189> for more information
+   = help: add `#![feature(extended_varargs_abi_support)]` to the crate attributes to enable
+
+error[E0045]: C-variadic function must have a compatible calling convention, like `C` or `cdecl`
+  --> $DIR/feature-gate-extended_varargs_abi_support.rs:13:11
+   |
+LL | fn win(f: extern "win64" fn(usize, ...)) {
+   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C-variadic function must have a compatible calling convention
+
+error: aborting due to 6 previous errors
+
+Some errors have detailed explanations: E0045, E0658.
+For more information about an error, try `rustc --explain E0045`.

src/test/ui/c-variadic/variadic-ffi-1.rs

@@ -6,7 +6,9 @@
 trait Sized { }
 
 extern "stdcall" {
-    fn printf(_: *const u8, ...); //~ ERROR: variadic function must have C or cdecl calling
+    fn printf(_: *const u8, ...);
+    //~^ ERROR: C-variadic function must have a compatible calling convention,
+    // like C, cdecl, win64, sysv64 or efiapi
 }
 
 extern "C" {

src/test/ui/c-variadic/variadic-ffi-1.stderr

@@ -1,17 +1,17 @@
-error[E0045]: C-variadic function must have C or cdecl calling convention
+error[E0045]: C-variadic function must have a compatible calling convention, like `C` or `cdecl`
   --> $DIR/variadic-ffi-1.rs:9:5
    |
 LL |     fn printf(_: *const u8, ...);
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C-variadics require C or cdecl calling convention
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C-variadic function must have a compatible calling convention
 
 error[E0060]: this function takes at least 2 arguments but 0 arguments were supplied
-  --> $DIR/variadic-ffi-1.rs:20:9
+  --> $DIR/variadic-ffi-1.rs:22:9
    |
 LL |         foo();
    |         ^^^-- two arguments of type `isize` and `u8` are missing
    |
 note: function defined here
-  --> $DIR/variadic-ffi-1.rs:13:8
+  --> $DIR/variadic-ffi-1.rs:15:8
    |
 LL |     fn foo(f: isize, x: u8, ...);
    |        ^^^
@@ -21,13 +21,13 @@ LL |         foo(/* isize */, /* u8 */);
    |            ~~~~~~~~~~~~~~~~~~~~~~~
 
 error[E0060]: this function takes at least 2 arguments but 1 argument was supplied
-  --> $DIR/variadic-ffi-1.rs:21:9
+  --> $DIR/variadic-ffi-1.rs:23:9
    |
 LL |         foo(1);
    |         ^^^--- an argument of type `u8` is missing
    |
 note: function defined here
-  --> $DIR/variadic-ffi-1.rs:13:8
+  --> $DIR/variadic-ffi-1.rs:15:8
    |
 LL |     fn foo(f: isize, x: u8, ...);
    |        ^^^
@@ -37,7 +37,7 @@ LL |         foo(1, /* u8 */);
    |            ~~~~~~~~~~~~~
 
 error[E0308]: mismatched types
-  --> $DIR/variadic-ffi-1.rs:23:56
+  --> $DIR/variadic-ffi-1.rs:25:56
    |
 LL |         let x: unsafe extern "C" fn(f: isize, x: u8) = foo;
    |                -------------------------------------   ^^^ expected non-variadic fn, found variadic function
@@ -48,7 +48,7 @@ LL |         let x: unsafe extern "C" fn(f: isize, x: u8) = foo;
                  found fn item `unsafe extern "C" fn(_, _, ...) {foo}`
 
 error[E0308]: mismatched types
-  --> $DIR/variadic-ffi-1.rs:24:54
+  --> $DIR/variadic-ffi-1.rs:26:54
    |
 LL |         let y: extern "C" fn(f: isize, x: u8, ...) = bar;
    |                -----------------------------------   ^^^ expected variadic fn, found non-variadic function
@@ -59,37 +59,37 @@ LL |         let y: extern "C" fn(f: isize, x: u8, ...) = bar;
                  found fn item `extern "C" fn(_, _) {bar}`
 
 error[E0617]: can't pass `f32` to variadic function
-  --> $DIR/variadic-ffi-1.rs:26:19
+  --> $DIR/variadic-ffi-1.rs:28:19
    |
 LL |         foo(1, 2, 3f32);
    |                   ^^^^ help: cast the value to `c_double`: `3f32 as c_double`
 
 error[E0617]: can't pass `bool` to variadic function
-  --> $DIR/variadic-ffi-1.rs:27:19
+  --> $DIR/variadic-ffi-1.rs:29:19
    |
 LL |         foo(1, 2, true);
    |                   ^^^^ help: cast the value to `c_int`: `true as c_int`
 
 error[E0617]: can't pass `i8` to variadic function
-  --> $DIR/variadic-ffi-1.rs:28:19
+  --> $DIR/variadic-ffi-1.rs:30:19
    |
 LL |         foo(1, 2, 1i8);
    |                   ^^^ help: cast the value to `c_int`: `1i8 as c_int`
 
 error[E0617]: can't pass `u8` to variadic function
-  --> $DIR/variadic-ffi-1.rs:29:19
+  --> $DIR/variadic-ffi-1.rs:31:19
    |
 LL |         foo(1, 2, 1u8);
    |                   ^^^ help: cast the value to `c_uint`: `1u8 as c_uint`
 
 error[E0617]: can't pass `i16` to variadic function
-  --> $DIR/variadic-ffi-1.rs:30:19
+  --> $DIR/variadic-ffi-1.rs:32:19
    |
 LL |         foo(1, 2, 1i16);
    |                   ^^^^ help: cast the value to `c_int`: `1i16 as c_int`
 
 error[E0617]: can't pass `u16` to variadic function
-  --> $DIR/variadic-ffi-1.rs:31:19
+  --> $DIR/variadic-ffi-1.rs:33:19
    |
 LL |         foo(1, 2, 1u16);
    |                   ^^^^ help: cast the value to `c_uint`: `1u16 as c_uint`

src/test/ui/c-variadic/variadic-ffi-2.rs

@@ -1,7 +1,20 @@
 // ignore-arm stdcall isn't supported
+#![feature(extended_varargs_abi_support)]
+#![feature(abi_efiapi)]
 
 fn baz(f: extern "stdcall" fn(usize, ...)) {
-    //~^ ERROR: variadic function must have C or cdecl calling convention
+    //~^ ERROR: C-variadic function must have a compatible calling convention,
+    // like C, cdecl, win64, sysv64 or efiapi
+    f(22, 44);
+}
+
+fn sysv(f: extern "sysv64" fn(usize, ...)) {
+    f(22, 44);
+}
+fn win(f: extern "win64" fn(usize, ...)) {
+    f(22, 44);
+}
+fn efiapi(f: extern "efiapi" fn(usize, ...)) {
     f(22, 44);
 }
 

src/test/ui/c-variadic/variadic-ffi-2.stderr

@@ -1,8 +1,8 @@
-error[E0045]: C-variadic function must have C or cdecl calling convention
+error[E0045]: C-variadic function must have a compatible calling convention, like `C`, `cdecl`, `win64`, `sysv64` or `efiapi`
-  --> $DIR/variadic-ffi-2.rs:3:11
+  --> $DIR/variadic-ffi-2.rs:5:11
    |
 LL | fn baz(f: extern "stdcall" fn(usize, ...)) {
-   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C-variadics require C or cdecl calling convention
+   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C-variadic function must have a compatible calling convention
 
 error: aborting due to previous error
 

src/test/ui/error-codes/E0045.stderr

@@ -1,8 +1,8 @@
-error[E0045]: C-variadic function must have C or cdecl calling convention
+error[E0045]: C-variadic function must have a compatible calling convention, like `C` or `cdecl`
   --> $DIR/E0045.rs:1:17
    |
 LL | extern "Rust" { fn foo(x: u8, ...); }
-   |                 ^^^^^^^^^^^^^^^^^^^ C-variadics require C or cdecl calling convention
+   |                 ^^^^^^^^^^^^^^^^^^^ C-variadic function must have a compatible calling convention
 
 error: aborting due to previous error
 

src/test/ui/type/issue-94187-verbose-type-name.rs

@@ -1,13 +1,19 @@
-// Check to insure that the output of `std::any::type_name` does not change based on -Zverbose
+// Check to insure that the output of `std::any::type_name` does not change based on `-Zverbose`
-// when printing constants
 // run-pass
 // edition: 2018
 // revisions: normal verbose
 // [verbose]compile-flags:-Zverbose
 
-struct Wrapper<const VALUE: usize>;
+use std::any::type_name;
 
 fn main() {
-    assert_eq!(std::any::type_name::<[u32; 0]>(), "[u32; 0]");
+    assert_eq!(type_name::<[u32; 0]>(), "[u32; 0]");
-    assert_eq!(std::any::type_name::<Wrapper<0>>(), "issue_94187_verbose_type_name::Wrapper<0>");
+
+    struct Wrapper<const VALUE: usize>;
+    assert_eq!(type_name::<Wrapper<0>>(), "issue_94187_verbose_type_name::main::Wrapper<0>");
+
+    assert_eq!(
+        type_name::<dyn Fn(u32) -> u32>(),
+        "dyn core::ops::function::Fn<(u32,)>+Output = u32"
+    );
 }