[WIP] Try packing hot type flags in the Ty (pointer)

.github/workflows/ci.yml

@@ -326,7 +326,7 @@ jobs:
               NO_DEBUG_ASSERTIONS: 1
               NO_OVERFLOW_CHECKS: 1
               DIST_REQUIRE_ALL_TOOLS: 1
-            os: macos-12-xl
+            os: macos-latest
           - name: dist-apple-various
             env:
               SCRIPT: "./x.py dist bootstrap --include-default-paths --host='' --target=aarch64-apple-ios,x86_64-apple-ios,aarch64-apple-ios-sim"
@@ -337,7 +337,7 @@ jobs:
               NO_LLVM_ASSERTIONS: 1
               NO_DEBUG_ASSERTIONS: 1
               NO_OVERFLOW_CHECKS: 1
-            os: macos-12-xl
+            os: macos-latest
           - name: dist-x86_64-apple-alt
             env:
               SCRIPT: "./x.py dist bootstrap --include-default-paths"
@@ -348,7 +348,7 @@ jobs:
               NO_LLVM_ASSERTIONS: 1
               NO_DEBUG_ASSERTIONS: 1
               NO_OVERFLOW_CHECKS: 1
-            os: macos-12-xl
+            os: macos-latest
           - name: x86_64-apple-1
             env:
               SCRIPT: "./x.py --stage 2 test --exclude tests/ui --exclude tests/rustdoc --exclude tests/run-make-fulldeps"
@@ -359,7 +359,7 @@ jobs:
               NO_LLVM_ASSERTIONS: 1
               NO_DEBUG_ASSERTIONS: 1
               NO_OVERFLOW_CHECKS: 1
-            os: macos-12-xl
+            os: macos-latest
           - name: x86_64-apple-2
             env:
               SCRIPT: "./x.py --stage 2 test tests/ui tests/rustdoc tests/run-make-fulldeps"
@@ -370,7 +370,7 @@ jobs:
               NO_LLVM_ASSERTIONS: 1
               NO_DEBUG_ASSERTIONS: 1
               NO_OVERFLOW_CHECKS: 1
-            os: macos-12-xl
+            os: macos-latest
           - name: dist-aarch64-apple
             env:
               SCRIPT: "./x.py dist bootstrap --include-default-paths --stage 2"
@@ -385,7 +385,7 @@ jobs:
               NO_OVERFLOW_CHECKS: 1
               DIST_REQUIRE_ALL_TOOLS: 1
               JEMALLOC_SYS_WITH_LG_PAGE: 14
-            os: macos-12-xl
+            os: macos-latest
           - name: x86_64-msvc-1
             env:
               RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-msvc --enable-profiler"

Cargo.lock

@@ -1170,13 +1170,13 @@ dependencies = [
 
 [[package]]
 name = "errno"
-version = "0.2.8"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f639046355ee4f37944e44f60642c6f3a7efa3cf6b78c78a0d989a8ce6c396a1"
+checksum = "4bcfec3a70f97c962c307b2d2c56e358cf1d00b558d74262b5f929ee8cc7e73a"
 dependencies = [
  "errno-dragonfly",
  "libc",
- "winapi",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -1831,14 +1831,14 @@ dependencies = [
 
 [[package]]
 name = "is-terminal"
-version = "0.4.4"
+version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21b6b32576413a8e69b90e952e4a026476040d81017b80445deda5f2d3921857"
+checksum = "adcf93614601c8129ddf72e2d5633df827ba6551541c6d8c59520a371475be1f"
 dependencies = [
  "hermit-abi 0.3.0",
  "io-lifetimes",
  "rustix",
- "windows-sys 0.45.0",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -1937,9 +1937,9 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
 [[package]]
 name = "libc"
-version = "0.2.140"
+version = "0.2.142"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99227334921fae1a979cf0bfdfcc6b3e5ce376ef57e16fb6fb3ea2ed6095f80c"
+checksum = "6a987beff54b60ffa6d51982e1aa1146bc42f19bd26be28b0586f252fccf5317"
 dependencies = [
  "rustc-std-workspace-core",
 ]
@@ -2025,9 +2025,9 @@ dependencies = [
 
 [[package]]
 name = "linux-raw-sys"
-version = "0.1.4"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f051f77a7c8e6957c0696eac88f26b0117e54f52d3fc682ab19397a8812846a4"
+checksum = "36eb31c1778188ae1e64398743890d0877fef36d11521ac60406b42016e8c2cf"
 
 [[package]]
 name = "litemap"
@@ -4350,16 +4350,16 @@ dependencies = [
 
 [[package]]
 name = "rustix"
-version = "0.36.5"
+version = "0.37.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a3807b5d10909833d3e9acd1eb5fb988f79376ff10fce42937de71a449c4c588"
+checksum = "2aae838e49b3d63e9274e1c01833cc8139d3fec468c3b84688c628f44b1ae11d"
 dependencies = [
  "bitflags",
  "errno",
  "io-lifetimes",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.42.0",
+ "windows-sys 0.45.0",
 ]
 
 [[package]]
@@ -4791,12 +4791,12 @@ dependencies = [
 
 [[package]]
 name = "terminal_size"
-version = "0.2.3"
+version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb20089a8ba2b69debd491f8d2d023761cbf196e999218c591fa1e7e15a21907"
+checksum = "8e6bf6f19e9f8ed8d4048dc22981458ebcf406d67e94cd422e5ecd73d63b3237"
 dependencies = [
  "rustix",
- "windows-sys 0.42.0",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -5513,6 +5513,15 @@ dependencies = [
  "windows-targets 0.42.2",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets 0.48.0",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.42.2"

compiler/rustc_ast_lowering/src/expr.rs

@@ -858,13 +858,8 @@ impl<'hir> LoweringContext<'_, 'hir> {
         let awaitee_arm = self.arm(awaitee_pat, loop_expr);
 
         // `match ::std::future::IntoFuture::into_future(<expr>) { ... }`
-        let into_future_span = self.mark_span_with_reason(
-            DesugaringKind::Await,
-            dot_await_span,
-            self.allow_into_future.clone(),
-        );
         let into_future_expr = self.expr_call_lang_item_fn(
-            into_future_span,
+            span,
             hir::LangItem::IntoFutureIntoFuture,
             arena_vec![self; expr],
             Some(expr_hir_id),

compiler/rustc_ast_lowering/src/item.rs

@@ -83,7 +83,6 @@ impl<'a, 'hir> ItemLowerer<'a, 'hir> {
             impl_trait_bounds: Vec::new(),
             allow_try_trait: Some([sym::try_trait_v2, sym::yeet_desugar_details][..].into()),
             allow_gen_future: Some([sym::gen_future, sym::closure_track_caller][..].into()),
-            allow_into_future: Some([sym::into_future][..].into()),
             generics_def_id_map: Default::default(),
         };
         lctx.with_hir_id_owner(owner, |lctx| f(lctx));

compiler/rustc_ast_lowering/src/lib.rs

@@ -136,7 +136,6 @@ struct LoweringContext<'a, 'hir> {
 
     allow_try_trait: Option<Lrc<[Symbol]>>,
     allow_gen_future: Option<Lrc<[Symbol]>>,
-    allow_into_future: Option<Lrc<[Symbol]>>,
 
     /// Mapping from generics `def_id`s to TAIT generics `def_id`s.
     /// For each captured lifetime (e.g., 'a), we create a new lifetime parameter that is a generic

compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs

@@ -702,7 +702,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
                 .copied()
                 .find_map(find_fn_kind_from_did),
             ty::Alias(ty::Opaque, ty::AliasTy { def_id, substs, .. }) => tcx
-                .bound_explicit_item_bounds(def_id)
+                .explicit_item_bounds(def_id)
                 .subst_iter_copied(tcx, substs)
                 .find_map(find_fn_kind_from_did),
             ty::Closure(_, substs) => match substs.as_closure().kind() {

compiler/rustc_builtin_macros/messages.ftl

@@ -149,6 +149,25 @@ builtin_macros_format_pos_mismatch = {$n} positional {$n ->
     [one] argument
     *[more] arguments
     } in format string, but {$desc}
+
 builtin_macros_offset_of_expected_field = expected field
 
 builtin_macros_offset_of_expected_two_args = expected 2 arguments
+
+builtin_macros_test_case_non_item = `#[test_case]` attribute is only allowed on items
+
+builtin_macros_test_bad_fn = {$kind} functions cannot be used for tests
+    .label = `{$kind}` because of this
+
+builtin_macros_asm_explicit_register_name = explicit register arguments cannot have names
+
+builtin_macros_asm_mutually_exclusive = the `{$opt1}` and `{$opt2}` options are mutually exclusive
+
+builtin_macros_asm_pure_combine = the `pure` option must be combined with either `nomem` or `readonly`
+
+builtin_macros_asm_pure_no_output = asm with the `pure` option must have at least one output
+
+builtin_macros_asm_modifier_invalid = asm template modifier must be a single character
+
+builtin_macros_test_runner_invalid = `test_runner` argument must be a path
+builtin_macros_test_runner_nargs = `#![test_runner(..)]` accepts exactly 1 argument

compiler/rustc_builtin_macros/src/asm.rs

@@ -15,6 +15,8 @@ use rustc_span::{InnerSpan, Span};
 use rustc_target::asm::InlineAsmArch;
 use smallvec::smallvec;
 
+use crate::errors;
+
 pub struct AsmArgs {
     pub templates: Vec<P<ast::Expr>>,
     pub operands: Vec<(ast::InlineAsmOperand, Span)>,
@@ -205,7 +207,7 @@ pub fn parse_asm_args<'a>(
         // of the argument available.
         if explicit_reg {
             if name.is_some() {
-                diag.struct_span_err(span, "explicit register arguments cannot have names").emit();
+                diag.emit_err(errors::AsmExplicitRegisterName { span });
             }
             args.reg_args.insert(slot);
         } else if let Some(name) = name {
@@ -240,25 +242,19 @@ pub fn parse_asm_args<'a>(
         && args.options.contains(ast::InlineAsmOptions::READONLY)
     {
         let spans = args.options_spans.clone();
-        diag.struct_span_err(spans, "the `nomem` and `readonly` options are mutually exclusive")
-            .emit();
+        diag.emit_err(errors::AsmMutuallyExclusive { spans, opt1: "nomem", opt2: "readonly" });
     }
     if args.options.contains(ast::InlineAsmOptions::PURE)
         && args.options.contains(ast::InlineAsmOptions::NORETURN)
     {
         let spans = args.options_spans.clone();
-        diag.struct_span_err(spans, "the `pure` and `noreturn` options are mutually exclusive")
-            .emit();
+        diag.emit_err(errors::AsmMutuallyExclusive { spans, opt1: "pure", opt2: "noreturn" });
     }
     if args.options.contains(ast::InlineAsmOptions::PURE)
         && !args.options.intersects(ast::InlineAsmOptions::NOMEM | ast::InlineAsmOptions::READONLY)
     {
         let spans = args.options_spans.clone();
-        diag.struct_span_err(
-            spans,
-            "the `pure` option must be combined with either `nomem` or `readonly`",
-        )
-        .emit();
+        diag.emit_err(errors::AsmPureCombine { spans });
     }
 
     let mut have_real_output = false;
@@ -285,11 +281,7 @@ pub fn parse_asm_args<'a>(
         }
     }
     if args.options.contains(ast::InlineAsmOptions::PURE) && !have_real_output {
-        diag.struct_span_err(
-            args.options_spans.clone(),
-            "asm with the `pure` option must have at least one output",
-        )
-        .emit();
+        diag.emit_err(errors::AsmPureNoOutput { spans: args.options_spans.clone() });
     }
     if args.options.contains(ast::InlineAsmOptions::NORETURN) && !outputs_sp.is_empty() {
         let err = diag
@@ -705,11 +697,7 @@ fn expand_preparsed_asm(ecx: &mut ExtCtxt<'_>, args: AsmArgs) -> Option<ast::Inl
                             .ty_span
                             .map(|sp| template_sp.from_inner(InnerSpan::new(sp.start, sp.end)))
                             .unwrap_or(template_sp);
-                        ecx.struct_span_err(
-                            span,
-                            "asm template modifier must be a single character",
-                        )
-                        .emit();
+                        ecx.emit_err(errors::AsmModifierInvalid { span });
                         modifier = None;
                     }
 

compiler/rustc_builtin_macros/src/errors.rs

@@ -551,3 +551,71 @@ pub(crate) struct FormatPositionalMismatch {
     #[subdiagnostic]
     pub(crate) highlight: SingleLabelManySpans,
 }
+
+#[derive(Diagnostic)]
+#[diag(builtin_macros_test_case_non_item)]
+pub(crate) struct TestCaseNonItem {
+    #[primary_span]
+    pub(crate) span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(builtin_macros_test_bad_fn)]
+pub(crate) struct TestBadFn {
+    #[primary_span]
+    pub(crate) span: Span,
+    #[label]
+    pub(crate) cause: Span,
+    pub(crate) kind: &'static str,
+}
+
+#[derive(Diagnostic)]
+#[diag(builtin_macros_asm_explicit_register_name)]
+pub(crate) struct AsmExplicitRegisterName {
+    #[primary_span]
+    pub(crate) span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(builtin_macros_asm_mutually_exclusive)]
+pub(crate) struct AsmMutuallyExclusive {
+    #[primary_span]
+    pub(crate) spans: Vec<Span>,
+    pub(crate) opt1: &'static str,
+    pub(crate) opt2: &'static str,
+}
+
+#[derive(Diagnostic)]
+#[diag(builtin_macros_asm_pure_combine)]
+pub(crate) struct AsmPureCombine {
+    #[primary_span]
+    pub(crate) spans: Vec<Span>,
+}
+
+#[derive(Diagnostic)]
+#[diag(builtin_macros_asm_pure_no_output)]
+pub(crate) struct AsmPureNoOutput {
+    #[primary_span]
+    pub(crate) spans: Vec<Span>,
+}
+
+#[derive(Diagnostic)]
+#[diag(builtin_macros_asm_modifier_invalid)]
+pub(crate) struct AsmModifierInvalid {
+    #[primary_span]
+    pub(crate) span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(builtin_macros_test_runner_invalid)]
+pub(crate) struct TestRunnerInvalid {
+    #[primary_span]
+    pub(crate) span: Span,
+}
+
+#[derive(Diagnostic)]
+#[diag(builtin_macros_test_runner_nargs)]
+pub(crate) struct TestRunnerNargs {
+    #[primary_span]
+    pub(crate) span: Span,
+}