Merge from rustc

Author: The Miri Conjob Bot

.github/workflows/ci.yml

@@ -361,8 +361,8 @@ jobs:
             os: macos-13
           - name: dist-aarch64-apple
             env:
-              SCRIPT: "./x.py dist bootstrap --include-default-paths --host=aarch64-apple-darwin --target=aarch64-apple-darwin"
-              RUST_CONFIGURE_ARGS: "--enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc --set llvm.ninja=false --set rust.lto=thin"
+              SCRIPT: "./x.py dist bootstrap --include-default-paths --stage 2"
+              RUST_CONFIGURE_ARGS: "--build=x86_64-apple-darwin --host=aarch64-apple-darwin --target=aarch64-apple-darwin --enable-full-tools --enable-sanitizers --enable-profiler --disable-docs --set rust.jemalloc --set llvm.ninja=false"
               RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
               SELECT_XCODE: /Applications/Xcode_13.4.1.app
               USE_XCODE_CLANG: 1
@@ -372,20 +372,8 @@ jobs:
               NO_DEBUG_ASSERTIONS: 1
               NO_OVERFLOW_CHECKS: 1
               DIST_REQUIRE_ALL_TOOLS: 1
-            os: macos-13-xlarge
-          - name: aarch64-apple
-            env:
-              SCRIPT: "./x.py --stage 2 test --host=aarch64-apple-darwin --target=aarch64-apple-darwin"
-              RUST_CONFIGURE_ARGS: "--enable-sanitizers --enable-profiler --set rust.jemalloc --set llvm.ninja=false"
-              RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-              SELECT_XCODE: /Applications/Xcode_13.4.1.app
-              USE_XCODE_CLANG: 1
-              MACOSX_DEPLOYMENT_TARGET: 11.0
-              MACOSX_STD_DEPLOYMENT_TARGET: 11.0
-              NO_LLVM_ASSERTIONS: 1
-              NO_DEBUG_ASSERTIONS: 1
-              NO_OVERFLOW_CHECKS: 1
-            os: macos-13-xlarge
+              JEMALLOC_SYS_WITH_LG_PAGE: 14
+            os: macos-13
           - name: x86_64-msvc
             env:
               RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-msvc --enable-profiler"

Cargo.lock

@@ -285,9 +285,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitflags"
-version = "2.4.0"
+version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4682ae6287fcf752ecaabbfcc7b6f9b72aa33933dc23a554d853aea8eea8635"
+checksum = "327762f6e5a765692301e5bb513e0d9fef63be86bbc14528052b1cd3e6f03e07"
 
 [[package]]
 name = "block-buffer"
@@ -537,7 +537,7 @@ checksum = "2da6da31387c7e4ef160ffab6d5e7f00c42626fe39aea70a7b0f1773f7dd6c1b"
 
 [[package]]
 name = "clippy"
-version = "0.1.76"
+version = "0.1.77"
 dependencies = [
  "anstream",
  "clippy_config",
@@ -565,7 +565,7 @@ dependencies = [
 
 [[package]]
 name = "clippy_config"
-version = "0.1.76"
+version = "0.1.77"
 dependencies = [
  "rustc-semver",
  "serde",
@@ -588,7 +588,7 @@ dependencies = [
 
 [[package]]
 name = "clippy_lints"
-version = "0.1.76"
+version = "0.1.77"
 dependencies = [
  "arrayvec",
  "cargo_metadata 0.15.4",
@@ -613,7 +613,7 @@ dependencies = [
 
 [[package]]
 name = "clippy_utils"
-version = "0.1.76"
+version = "0.1.77"
 dependencies = [
  "arrayvec",
  "clippy_config",
@@ -984,7 +984,7 @@ checksum = "a0afaad2b26fa326569eb264b1363e8ae3357618c43982b3f285f0774ce76b69"
 
 [[package]]
 name = "declare_clippy_lint"
-version = "0.1.76"
+version = "0.1.77"
 dependencies = [
  "itertools",
  "quote",
@@ -3370,7 +3370,7 @@ dependencies = [
 name = "rustc_abi"
 version = "0.0.0"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "rand",
  "rand_xoshiro",
  "rustc_data_structures",
@@ -3401,7 +3401,7 @@ dependencies = [
 name = "rustc_ast"
 version = "0.0.0"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "memchr",
  "rustc_data_structures",
  "rustc_index",
@@ -3552,7 +3552,7 @@ dependencies = [
 name = "rustc_codegen_llvm"
 version = "0.0.0"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "itertools",
  "libc",
  "measureme",
@@ -3587,7 +3587,7 @@ name = "rustc_codegen_ssa"
 version = "0.0.0"
 dependencies = [
  "ar_archive_writer",
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "cc",
  "itertools",
  "jobserver",
@@ -3654,7 +3654,7 @@ name = "rustc_data_structures"
 version = "0.0.0"
 dependencies = [
  "arrayvec",
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "elsa",
  "ena",
  "indexmap",
@@ -4121,7 +4121,7 @@ dependencies = [
 name = "rustc_metadata"
 version = "0.0.0"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "libloading 0.7.4",
  "odht",
  "rustc_ast",
@@ -4151,7 +4151,7 @@ dependencies = [
 name = "rustc_middle"
 version = "0.0.0"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "derive_more",
  "either",
  "field-offset",
@@ -4286,7 +4286,7 @@ dependencies = [
 name = "rustc_parse"
 version = "0.0.0"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "rustc_ast",
  "rustc_ast_pretty",
  "rustc_data_structures",
@@ -4424,7 +4424,7 @@ dependencies = [
 name = "rustc_resolve"
 version = "0.0.0"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "pulldown-cmark",
  "rustc_arena",
  "rustc_ast",
@@ -4463,7 +4463,7 @@ dependencies = [
 name = "rustc_session"
 version = "0.0.0"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "getopts",
  "libc",
  "rustc_ast",
@@ -4521,7 +4521,7 @@ dependencies = [
 name = "rustc_symbol_mangling"
 version = "0.0.0"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "punycode",
  "rustc-demangle",
  "rustc_data_structures",
@@ -4539,7 +4539,7 @@ dependencies = [
 name = "rustc_target"
 version = "0.0.0"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "object",
  "rustc_abi",
  "rustc_data_structures",
@@ -4563,6 +4563,7 @@ checksum = "8ba09476327c4b70ccefb6180f046ef588c26a24cf5d269a9feba316eb4f029f"
 name = "rustc_trait_selection"
 version = "0.0.0"
 dependencies = [
+ "itertools",
  "rustc_ast",
  "rustc_attr",
  "rustc_data_structures",
@@ -4637,7 +4638,7 @@ dependencies = [
 name = "rustc_type_ir"
 version = "0.0.0"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags 2.4.1",
  "derivative",
  "rustc_data_structures",
  "rustc_index",
@@ -4767,7 +4768,7 @@ version = "0.38.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "745ecfa778e66b2b63c88a61cb36e0eea109e803b0b86bf9879fbc77c70e86ed"
 dependencies = [
- "bitflags 2.4.0",
+ "bitflags 2.4.1",
  "errno",
  "libc",
  "linux-raw-sys",
@@ -5205,9 +5206,9 @@ dependencies = [
 
 [[package]]
 name = "sysinfo"
-version = "0.29.2"
+version = "0.29.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9557d0845b86eea8182f7b10dff120214fb6cd9fd937b6f4917714e546a38695"
+checksum = "cd727fc423c2060f6c92d9534cef765c65a6ed3f428a03d7def74a8c4348e666"
 dependencies = [
  "cfg-if",
  "core-foundation-sys",

compiler/rustc_abi/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2021"
 
 [dependencies]
 # tidy-alphabetical-start
-bitflags = "1.2.1"
+bitflags = "2.4.1"
 rand = { version = "0.8.4", default-features = false, optional = true }
 rand_xoshiro = { version = "0.6.0", optional = true }
 rustc_data_structures = { path = "../rustc_data_structures", optional = true  }

compiler/rustc_abi/src/lib.rs

@@ -29,10 +29,12 @@ pub use layout::LayoutCalculator;
 /// instead of implementing everything in `rustc_middle`.
 pub trait HashStableContext {}
 
+#[derive(Clone, Copy, PartialEq, Eq, Default)]
+#[cfg_attr(feature = "nightly", derive(Encodable, Decodable, HashStable_Generic))]
+pub struct ReprFlags(u8);
+
 bitflags! {
-    #[derive(Default)]
-    #[cfg_attr(feature = "nightly", derive(Encodable, Decodable, HashStable_Generic))]
-    pub struct ReprFlags: u8 {
+    impl ReprFlags: u8 {
         const IS_C               = 1 << 0;
         const IS_SIMD            = 1 << 1;
         const IS_TRANSPARENT     = 1 << 2;
@@ -42,11 +44,12 @@ bitflags! {
         // the seed stored in `ReprOptions.layout_seed`
         const RANDOMIZE_LAYOUT   = 1 << 4;
         // Any of these flags being set prevent field reordering optimisation.
-        const IS_UNOPTIMISABLE   = ReprFlags::IS_C.bits
-                                 | ReprFlags::IS_SIMD.bits
-                                 | ReprFlags::IS_LINEAR.bits;
+        const IS_UNOPTIMISABLE   = ReprFlags::IS_C.bits()
+                                 | ReprFlags::IS_SIMD.bits()
+                                 | ReprFlags::IS_LINEAR.bits();
     }
 }
+rustc_data_structures::external_bitflags_debug! { ReprFlags }
 
 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
 #[cfg_attr(feature = "nightly", derive(Encodable, Decodable, HashStable_Generic))]

compiler/rustc_ast/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2021"
 
 [dependencies]
 # tidy-alphabetical-start
-bitflags = "1.2.1"
+bitflags = "2.4.1"
 memchr = "2.5.0"
 rustc_data_structures = { path = "../rustc_data_structures" }
 rustc_index = { path = "../rustc_index" }

compiler/rustc_ast/src/ast.rs

@@ -2171,9 +2171,10 @@ pub enum InlineAsmRegOrRegClass {
     RegClass(Symbol),
 }
 
+#[derive(Clone, Copy, PartialEq, Eq, Hash, Encodable, Decodable, HashStable_Generic)]
+pub struct InlineAsmOptions(u16);
 bitflags::bitflags! {
-    #[derive(Encodable, Decodable, HashStable_Generic)]
-    pub struct InlineAsmOptions: u16 {
+    impl InlineAsmOptions: u16 {
         const PURE            = 1 << 0;
         const NOMEM           = 1 << 1;
         const READONLY        = 1 << 2;
@@ -2186,6 +2187,12 @@ bitflags::bitflags! {
     }
 }
 
+impl std::fmt::Debug for InlineAsmOptions {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        bitflags::parser::to_writer(self, f)
+    }
+}
+
 #[derive(Clone, PartialEq, Encodable, Decodable, Debug, Hash, HashStable_Generic)]
 pub enum InlineAsmTemplatePiece {
     String(String),
@@ -2481,15 +2488,6 @@ pub enum Const {
     No,
 }
 
-impl From<BoundConstness> for Const {
-    fn from(constness: BoundConstness) -> Self {
-        match constness {
-            BoundConstness::Maybe(span) => Self::Yes(span),
-            BoundConstness::Never => Self::No,
-        }
-    }
-}
-
 /// Item defaultness.
 /// For details see the [RFC #2532](https://github.com/rust-lang/rfcs/pull/2532).
 #[derive(Copy, Clone, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)]
@@ -2543,6 +2541,8 @@ impl BoundPolarity {
 pub enum BoundConstness {
     /// `Type: Trait`
     Never,
+    /// `Type: const Trait`
+    Always(Span),
     /// `Type: ~const Trait`
     Maybe(Span),
 }
@@ -2551,6 +2551,7 @@ impl BoundConstness {
     pub fn as_str(self) -> &'static str {
         match self {
             Self::Never => "",
+            Self::Always(_) => "const",
             Self::Maybe(_) => "~const",
         }
     }

compiler/rustc_ast/src/token.rs

@@ -528,15 +528,6 @@ impl Token {
         }
     }
 
-    /// Returns `true` if the token can appear at the start of a generic bound.
-    pub fn can_begin_bound(&self) -> bool {
-        self.is_path_start()
-            || self.is_lifetime()
-            || self.is_keyword(kw::For)
-            || self == &Question
-            || self == &OpenDelim(Delimiter::Parenthesis)
-    }
-
     /// Returns `true` if the token can appear at the start of an item.
     pub fn can_begin_item(&self) -> bool {
         match self.kind {