Auto merge of #77917 - JohnTitor:rollup-e47h2qt, r=JohnTitor

Rollup of 14 pull requests

Successful merges:

 - #77239 (Enable building Cargo for aarch64-apple-darwin)
 - #77569 (BTreeMap: type-specific variants of node_as_mut and cast_unchecked)
 - #77719 (Remove unnecessary rustc_const_stable attributes.)
 - #77722 (Remove unsafety from sys/unsupported and add deny(unsafe_op_in_unsafe_fn).)
 - #77725 (Add regression issue template)
 - #77776 ( Give an error when running `x.py test --stage 0 src/test/ui`)
 - #77786 (Mention rustdoc in `x.py setup`)
 - #77825 (`min_const_generics` diagnostics improvements)
 - #77868 (Include `llvm-dis`, `llc` and `opt` in `llvm-tools-preview` component)
 - #77884 (Use Option::unwrap_or instead of open-coding it)
 - #77886 (Replace trivial bool matches with the `matches!` macro)
 - #77892 (Replace absolute paths with relative ones)
 - #77895 (Include aarch64-apple-darwin in the dist manifests)
 - #77909 (bootstrap: set correct path for the build-manifest binary)

Failed merges:

 - #77902 (Include aarch64-pc-windows-msvc in the dist manifests)

r? `@ghost`

compiler/rustc_middle/src/ich/impls_syntax.rs

@@ -5,7 +5,7 @@ use crate::ich::StableHashingContext;
 
 use rustc_ast as ast;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
-use rustc_span::SourceFile;
+use rustc_span::{BytePos, NormalizedPos, SourceFile};
 
 use smallvec::SmallVec;
 
@@ -102,22 +102,19 @@ impl<'a> HashStable<StableHashingContext<'a>> for SourceFile {
     }
 }
 
-fn stable_byte_pos(pos: ::rustc_span::BytePos, source_file_start: ::rustc_span::BytePos) -> u32 {
+fn stable_byte_pos(pos: BytePos, source_file_start: BytePos) -> u32 {
     pos.0 - source_file_start.0
 }
 
-fn stable_multibyte_char(
-    mbc: ::rustc_span::MultiByteChar,
-    source_file_start: ::rustc_span::BytePos,
-) -> (u32, u32) {
-    let ::rustc_span::MultiByteChar { pos, bytes } = mbc;
+fn stable_multibyte_char(mbc: rustc_span::MultiByteChar, source_file_start: BytePos) -> (u32, u32) {
+    let rustc_span::MultiByteChar { pos, bytes } = mbc;
 
     (pos.0 - source_file_start.0, bytes as u32)
 }
 
 fn stable_non_narrow_char(
-    swc: ::rustc_span::NonNarrowChar,
-    source_file_start: ::rustc_span::BytePos,
+    swc: rustc_span::NonNarrowChar,
+    source_file_start: BytePos,
 ) -> (u32, u32) {
     let pos = swc.pos();
     let width = swc.width();
@@ -125,11 +122,8 @@ fn stable_non_narrow_char(
     (pos.0 - source_file_start.0, width as u32)
 }
 
-fn stable_normalized_pos(
-    np: ::rustc_span::NormalizedPos,
-    source_file_start: ::rustc_span::BytePos,
-) -> (u32, u32) {
-    let ::rustc_span::NormalizedPos { pos, diff } = np;
+fn stable_normalized_pos(np: NormalizedPos, source_file_start: BytePos) -> (u32, u32) {
+    let NormalizedPos { pos, diff } = np;
 
     (pos.0 - source_file_start.0, diff)
 }

compiler/rustc_middle/src/mir/interpret/allocation.rs

@@ -40,7 +40,7 @@ pub struct Allocation<Tag = (), Extra = ()> {
     pub extra: Extra,
 }
 
-pub trait AllocationExtra<Tag>: ::std::fmt::Debug + Clone {
+pub trait AllocationExtra<Tag>: std::fmt::Debug + Clone {
     // There is no constructor in here because the constructor's type depends
     // on `MemoryKind`, and making things sufficiently generic leads to painful
     // inference failure.

compiler/rustc_middle/src/mir/interpret/value.rs

@@ -58,7 +58,7 @@ impl<'tcx> ConstValue<'tcx> {
 
     pub fn try_to_str_slice(&self) -> Option<&'tcx str> {
         if let ConstValue::Slice { data, start, end } = *self {
-            ::std::str::from_utf8(data.inspect_with_uninit_and_ptr_outside_interpreter(start..end))
+            std::str::from_utf8(data.inspect_with_uninit_and_ptr_outside_interpreter(start..end))
                 .ok()
         } else {
             None
@@ -465,7 +465,7 @@ impl<'tcx, Tag> Scalar<Tag> {
 
     pub fn to_char(self) -> InterpResult<'tcx, char> {
         let val = self.to_u32()?;
-        match ::std::char::from_u32(val) {
+        match std::char::from_u32(val) {
             Some(c) => Ok(c),
             None => throw_ub!(InvalidChar(val)),
         }

compiler/rustc_middle/src/mir/mod.rs

@@ -775,7 +775,7 @@ mod binding_form_impl {
     impl<'a, 'tcx> HashStable<StableHashingContext<'a>> for super::BindingForm<'tcx> {
         fn hash_stable(&self, hcx: &mut StableHashingContext<'a>, hasher: &mut StableHasher) {
             use super::BindingForm::*;
-            ::std::mem::discriminant(self).hash_stable(hcx, hasher);
+            std::mem::discriminant(self).hash_stable(hcx, hasher);
 
             match self {
                 Var(binding) => binding.hash_stable(hcx, hasher),

compiler/rustc_middle/src/ty/layout.rs

@@ -1894,7 +1894,7 @@ impl<'tcx, T: HasTyCtxt<'tcx>> HasTyCtxt<'tcx> for LayoutCx<'tcx, T> {
     }
 }
 
-pub type TyAndLayout<'tcx> = ::rustc_target::abi::TyAndLayout<'tcx, Ty<'tcx>>;
+pub type TyAndLayout<'tcx> = rustc_target::abi::TyAndLayout<'tcx, Ty<'tcx>>;
 
 impl<'tcx> LayoutOf for LayoutCx<'tcx, TyCtxt<'tcx>> {
     type Ty = Ty<'tcx>;

compiler/rustc_middle/src/ty/normalize_erasing_regions.rs

@@ -23,7 +23,7 @@ impl<'tcx> TyCtxt<'tcx> {
     {
         debug!(
             "normalize_erasing_regions::<{}>(value={:?}, param_env={:?})",
-            ::std::any::type_name::<T>(),
+            std::any::type_name::<T>(),
             value,
             param_env,
         );

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

@@ -1142,7 +1142,7 @@ pub trait PrettyPrinter<'tcx>:
                 // relocations (we have an active `str` reference here). We don't use this
                 // result to affect interpreter execution.
                 let slice = data.inspect_with_uninit_and_ptr_outside_interpreter(start..end);
-                let s = ::std::str::from_utf8(slice).expect("non utf8 str from miri");
+                let s = std::str::from_utf8(slice).expect("non utf8 str from miri");
                 p!(write("{:?}", s));
                 Ok(self)
             }

compiler/rustc_middle/src/ty/query/on_disk_cache.rs

@@ -543,7 +543,7 @@ impl<'a, 'tcx> DecoderWithPosition for CacheDecoder<'a, 'tcx> {
 // tag matches and the correct amount of bytes was read.
 fn decode_tagged<D, T, V>(decoder: &mut D, expected_tag: T) -> Result<V, D::Error>
 where
-    T: Decodable<D> + Eq + ::std::fmt::Debug,
+    T: Decodable<D> + Eq + std::fmt::Debug,
     V: Decodable<D>,
     D: DecoderWithPosition,
 {
@@ -1023,7 +1023,7 @@ where
     let _timer = tcx
         .sess
         .prof
-        .extra_verbose_generic_activity("encode_query_results_for", ::std::any::type_name::<Q>());
+        .extra_verbose_generic_activity("encode_query_results_for", std::any::type_name::<Q>());
 
     let state = Q::query_state(tcx);
     assert!(state.all_inactive());

compiler/rustc_middle/src/ty/util.rs

@@ -646,8 +646,8 @@ impl<'tcx> ty::TyS<'tcx> {
             }
             ty::Char => Some(std::char::MAX as u128),
             ty::Float(fty) => Some(match fty {
-                ast::FloatTy::F32 => ::rustc_apfloat::ieee::Single::INFINITY.to_bits(),
-                ast::FloatTy::F64 => ::rustc_apfloat::ieee::Double::INFINITY.to_bits(),
+                ast::FloatTy::F32 => rustc_apfloat::ieee::Single::INFINITY.to_bits(),
+                ast::FloatTy::F64 => rustc_apfloat::ieee::Double::INFINITY.to_bits(),
             }),
             _ => None,
         };