Merge ref 'a09fbe2c8372' from rust-lang/rust

Pull recent changes from https://github.com/rust-lang/rust via Josh.

Upstream ref: a09fbe2
Filtered ref: e8da14f32630072c76aeb944454175f4d8266918

This merge was created using https://github.com/rust-lang/josh-sync.

Author: RalfJung

Cargo.lock

@@ -336,7 +336,7 @@ dependencies = [
  "curl",
  "indexmap",
  "serde",
- "toml 0.7.8",
+ "toml 0.8.23",
 ]
 
 [[package]]
@@ -4022,6 +4022,7 @@ dependencies = [
 name = "rustc_lint"
 version = "0.0.0"
 dependencies = [
+ "bitflags",
  "rustc_abi",
  "rustc_ast",
  "rustc_ast_pretty",
@@ -4072,7 +4073,6 @@ name = "rustc_log"
 version = "0.0.0"
 dependencies = [
  "tracing",
- "tracing-core",
  "tracing-subscriber",
  "tracing-tree",
 ]
@@ -5541,9 +5541,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-core"
-version = "0.1.30"
+version = "0.1.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24eb03ba0eab1fd845050058ce5e616558e8f8d8fca633e6b163fe25c797213a"
+checksum = "b9d12581f227e93f094d3af2ae690a574abb8a2b9b7a96e7cfe9647b2b617678"
 dependencies = [
  "once_cell",
  "valuable",

compiler/rustc_borrowck/src/region_infer/opaque_types/mod.rs

@@ -503,7 +503,16 @@ pub(crate) fn apply_computed_concrete_opaque_types<'tcx>(
     let mut errors = Vec::new();
     for &(key, hidden_type) in opaque_types {
         let Some(expected) = get_concrete_opaque_type(concrete_opaque_types, key.def_id) else {
-            assert!(tcx.use_typing_mode_borrowck(), "non-defining use in defining scope");
+            if !tcx.use_typing_mode_borrowck() {
+                if let ty::Alias(ty::Opaque, alias_ty) = hidden_type.ty.kind()
+                    && alias_ty.def_id == key.def_id.to_def_id()
+                    && alias_ty.args == key.args
+                {
+                    continue;
+                } else {
+                    unreachable!("non-defining use in defining scope");
+                }
+            }
             errors.push(DeferredOpaqueTypeError::NonDefiningUseInDefiningScope {
                 span: hidden_type.span,
                 opaque_type_key: key,

compiler/rustc_codegen_cranelift/scripts/test_rustc_tests.sh

@@ -121,7 +121,7 @@ rm tests/ui/abi/large-byval-align.rs # exceeds implementation limit of Cranelift
 # ============================================================
 rm -r tests/run-make/remap-path-prefix-dwarf # requires llvm-dwarfdump
 rm -r tests/run-make/strip # same
-rm -r tests/run-make/compiler-builtins # Expects lib/rustlib/src/rust to contains the standard library source
+rm -r tests/run-make-cargo/compiler-builtins # Expects lib/rustlib/src/rust to contains the standard library source
 rm -r tests/run-make/translation # same
 rm -r tests/run-make/missing-unstable-trait-bound # This disables support for unstable features, but running cg_clif needs some unstable features
 rm -r tests/run-make/const-trait-stable-toolchain # same
@@ -166,5 +166,5 @@ index 073116933bd..c3e4578204d 100644
 EOF
 
 echo "[TEST] rustc test suite"
-./x.py test --stage 0 --test-args=--no-capture tests/{codegen-units,run-make,ui,incremental}
+./x.py test --stage 0 --test-args=--no-capture tests/{codegen-units,run-make,run-make-cargo,ui,incremental}
 popd

compiler/rustc_codegen_cranelift/src/driver/aot.rs

@@ -12,7 +12,9 @@ use cranelift_object::{ObjectBuilder, ObjectModule};
 use rustc_codegen_ssa::assert_module_sources::CguReuse;
 use rustc_codegen_ssa::back::link::ensure_removed;
 use rustc_codegen_ssa::base::determine_cgu_reuse;
-use rustc_codegen_ssa::{CodegenResults, CompiledModule, CrateInfo, errors as ssa_errors};
+use rustc_codegen_ssa::{
+    CodegenResults, CompiledModule, CrateInfo, ModuleKind, errors as ssa_errors,
+};
 use rustc_data_structures::profiling::SelfProfilerRef;
 use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 use rustc_data_structures::sync::{IntoDynSyncSend, par_map};
@@ -361,6 +363,7 @@ fn emit_cgu(
         invocation_temp,
         prof,
         product.object,
+        ModuleKind::Regular,
         name.clone(),
         producer,
     )?;
@@ -369,6 +372,7 @@ fn emit_cgu(
         module_regular,
         module_global_asm: global_asm_object_file.map(|global_asm_object_file| CompiledModule {
             name: format!("{name}.asm"),
+            kind: ModuleKind::Regular,
             object: Some(global_asm_object_file),
             dwarf_object: None,
             bytecode: None,
@@ -385,6 +389,7 @@ fn emit_module(
     invocation_temp: Option<&str>,
     prof: &SelfProfilerRef,
     mut object: cranelift_object::object::write::Object<'_>,
+    kind: ModuleKind,
     name: String,
     producer_str: &str,
 ) -> Result<CompiledModule, String> {
@@ -425,6 +430,7 @@ fn emit_module(
 
     Ok(CompiledModule {
         name,
+        kind,
         object: Some(tmp_file),
         dwarf_object: None,
         bytecode: None,
@@ -479,6 +485,7 @@ fn reuse_workproduct_for_cgu(
     Ok(ModuleCodegenResult {
         module_regular: CompiledModule {
             name: cgu.name().to_string(),
+            kind: ModuleKind::Regular,
             object: Some(obj_out_regular),
             dwarf_object: None,
             bytecode: None,
@@ -488,6 +495,7 @@ fn reuse_workproduct_for_cgu(
         },
         module_global_asm: source_file_global_asm.map(|source_file| CompiledModule {
             name: cgu.name().to_string(),
+            kind: ModuleKind::Regular,
             object: Some(obj_out_global_asm),
             dwarf_object: None,
             bytecode: None,
@@ -643,6 +651,7 @@ fn emit_allocator_module(tcx: TyCtxt<'_>) -> Option<CompiledModule> {
             tcx.sess.invocation_temp.as_deref(),
             &tcx.sess.prof,
             product.object,
+            ModuleKind::Allocator,
             "allocator_shim".to_owned(),
             &crate::debuginfo::producer(tcx.sess),
         ) {

compiler/rustc_codegen_gcc/build_system/src/test.rs

@@ -1083,27 +1083,36 @@ where
 
 fn test_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
     test_rustc_inner(env, args, |_| Ok(false), false, "run-make")?;
+    test_rustc_inner(env, args, |_| Ok(false), false, "run-make-cargo")?;
     test_rustc_inner(env, args, |_| Ok(false), false, "ui")
 }
 
 fn test_failing_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
-    let result1 = test_rustc_inner(
+    let run_make_result = test_rustc_inner(
         env,
         args,
         retain_files_callback("tests/failing-run-make-tests.txt", "run-make"),
         false,
         "run-make",
     );
 
-    let result2 = test_rustc_inner(
+    let run_make_cargo_result = test_rustc_inner(
+        env,
+        args,
+        retain_files_callback("tests/failing-run-make-tests.txt", "run-make-cargo"),
+        false,
+        "run-make",
+    );
+
+    let ui_result = test_rustc_inner(
         env,
         args,
         retain_files_callback("tests/failing-ui-tests.txt", "ui"),
         false,
         "ui",
     );
 
-    result1.and(result2)
+    run_make_result.and(run_make_cargo_result).and(ui_result)
 }
 
 fn test_successful_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
@@ -1120,6 +1129,13 @@ fn test_successful_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
         remove_files_callback("tests/failing-run-make-tests.txt", "run-make"),
         false,
         "run-make",
+    )?;
+    test_rustc_inner(
+        env,
+        args,
+        remove_files_callback("tests/failing-run-make-tests.txt", "run-make-cargo"),
+        false,
+        "run-make-cargo",
     )
 }
 

compiler/rustc_codegen_gcc/src/back/lto.rs

@@ -305,12 +305,9 @@ pub(crate) fn run_thin(
     )
 }
 
-pub(crate) fn prepare_thin(
-    module: ModuleCodegen<GccContext>,
-    _emit_summary: bool,
-) -> (String, ThinBuffer) {
+pub(crate) fn prepare_thin(module: ModuleCodegen<GccContext>) -> (String, ThinBuffer) {
     let name = module.name;
-    //let buffer = ThinBuffer::new(module.module_llvm.context, true, emit_summary);
+    //let buffer = ThinBuffer::new(module.module_llvm.context, true);
     let buffer = ThinBuffer::new(&module.module_llvm.context);
     (name, buffer)
 }
@@ -650,10 +647,6 @@ impl ThinBufferMethods for ThinBuffer {
     fn data(&self) -> &[u8] {
         &[]
     }
-
-    fn thin_link_data(&self) -> &[u8] {
-        unimplemented!();
-    }
 }
 
 pub struct ThinData; //(Arc<TempDir>);

compiler/rustc_codegen_gcc/src/lib.rs

@@ -408,11 +408,8 @@ impl WriteBackendMethods for GccCodegenBackend {
         back::write::codegen(cgcx, module, config)
     }
 
-    fn prepare_thin(
-        module: ModuleCodegen<Self::Module>,
-        emit_summary: bool,
-    ) -> (String, Self::ThinBuffer) {
-        back::lto::prepare_thin(module, emit_summary)
+    fn prepare_thin(module: ModuleCodegen<Self::Module>) -> (String, Self::ThinBuffer) {
+        back::lto::prepare_thin(module)
     }
 
     fn serialize_module(_module: ModuleCodegen<Self::Module>) -> (String, Self::ModuleBuffer) {

compiler/rustc_codegen_llvm/src/attributes.rs

@@ -296,6 +296,19 @@ pub(crate) fn tune_cpu_attr<'ll>(cx: &CodegenCx<'ll, '_>) -> Option<&'ll Attribu
         .map(|tune_cpu| llvm::CreateAttrStringValue(cx.llcx, "tune-cpu", tune_cpu))
 }
 
+/// Get the `target-features` LLVM attribute.
+pub(crate) fn target_features_attr<'ll>(
+    cx: &CodegenCx<'ll, '_>,
+    function_features: Vec<String>,
+) -> Option<&'ll Attribute> {
+    let global_features = cx.tcx.global_backend_features(()).iter().map(String::as_str);
+    let function_features = function_features.iter().map(String::as_str);
+    let target_features =
+        global_features.chain(function_features).intersperse(",").collect::<String>();
+    (!target_features.is_empty())
+        .then(|| llvm::CreateAttrStringValue(cx.llcx, "target-features", &target_features))
+}
+
 /// Get the `NonLazyBind` LLVM attribute,
 /// if the codegen options allow skipping the PLT.
 pub(crate) fn non_lazy_bind_attr<'ll>(cx: &CodegenCx<'ll, '_>) -> Option<&'ll Attribute> {
@@ -523,14 +536,7 @@ pub(crate) fn llfn_attrs_from_instance<'ll, 'tcx>(
         }
     }
 
-    let global_features = cx.tcx.global_backend_features(()).iter().map(|s| s.as_str());
-    let function_features = function_features.iter().map(|s| s.as_str());
-    let target_features: String =
-        global_features.chain(function_features).intersperse(",").collect();
-
-    if !target_features.is_empty() {
-        to_add.push(llvm::CreateAttrStringValue(cx.llcx, "target-features", &target_features));
-    }
+    to_add.extend(target_features_attr(cx, function_features));
 
     attributes::apply_to_llfn(llfn, Function, &to_add);
 }

compiler/rustc_codegen_llvm/src/back/lto.rs

@@ -11,7 +11,7 @@ use object::{Object, ObjectSection};
 use rustc_codegen_ssa::back::lto::{SerializedModule, ThinModule, ThinShared};
 use rustc_codegen_ssa::back::write::{CodegenContext, FatLtoInput};
 use rustc_codegen_ssa::traits::*;
-use rustc_codegen_ssa::{ModuleCodegen, looks_like_rust_object_file};
+use rustc_codegen_ssa::{ModuleCodegen, ModuleKind, looks_like_rust_object_file};
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::memmap::Mmap;
 use rustc_errors::DiagCtxtHandle;
@@ -185,12 +185,9 @@ pub(crate) fn run_thin(
     thin_lto(cgcx, dcx, modules, upstream_modules, cached_modules, &symbols_below_threshold)
 }
 
-pub(crate) fn prepare_thin(
-    module: ModuleCodegen<ModuleLlvm>,
-    emit_summary: bool,
-) -> (String, ThinBuffer) {
+pub(crate) fn prepare_thin(module: ModuleCodegen<ModuleLlvm>) -> (String, ThinBuffer) {
     let name = module.name;
-    let buffer = ThinBuffer::new(module.module_llvm.llmod(), true, emit_summary);
+    let buffer = ThinBuffer::new(module.module_llvm.llmod(), true);
     (name, buffer)
 }
 
@@ -225,9 +222,15 @@ fn fat_lto(
     // All the other modules will be serialized and reparsed into the new
     // context, so this hopefully avoids serializing and parsing the largest
     // codegen unit.
+    //
+    // Additionally use a regular module as the base here to ensure that various
+    // file copy operations in the backend work correctly. The only other kind
+    // of module here should be an allocator one, and if your crate is smaller
+    // than the allocator module then the size doesn't really matter anyway.
     let costliest_module = in_memory
         .iter()
         .enumerate()
+        .filter(|&(_, module)| module.kind == ModuleKind::Regular)
         .map(|(i, module)| {
             let cost = unsafe { llvm::LLVMRustModuleCost(module.module_llvm.llmod()) };
             (cost, i)
@@ -681,9 +684,9 @@ unsafe impl Send for ThinBuffer {}
 unsafe impl Sync for ThinBuffer {}
 
 impl ThinBuffer {
-    pub(crate) fn new(m: &llvm::Module, is_thin: bool, emit_summary: bool) -> ThinBuffer {
+    pub(crate) fn new(m: &llvm::Module, is_thin: bool) -> ThinBuffer {
         unsafe {
-            let buffer = llvm::LLVMRustThinLTOBufferCreate(m, is_thin, emit_summary);
+            let buffer = llvm::LLVMRustThinLTOBufferCreate(m, is_thin);
             ThinBuffer(buffer)
         }
     }
@@ -692,21 +695,21 @@ impl ThinBuffer {
         let mut ptr = NonNull::new(ptr).unwrap();
         ThinBuffer(unsafe { ptr.as_mut() })
     }
-}
 
-impl ThinBufferMethods for ThinBuffer {
-    fn data(&self) -> &[u8] {
+    pub(crate) fn thin_link_data(&self) -> &[u8] {
         unsafe {
-            let ptr = llvm::LLVMRustThinLTOBufferPtr(self.0) as *const _;
-            let len = llvm::LLVMRustThinLTOBufferLen(self.0);
+            let ptr = llvm::LLVMRustThinLTOBufferThinLinkDataPtr(self.0) as *const _;
+            let len = llvm::LLVMRustThinLTOBufferThinLinkDataLen(self.0);
             slice::from_raw_parts(ptr, len)
         }
     }
+}
 
-    fn thin_link_data(&self) -> &[u8] {
+impl ThinBufferMethods for ThinBuffer {
+    fn data(&self) -> &[u8] {
         unsafe {
-            let ptr = llvm::LLVMRustThinLTOBufferThinLinkDataPtr(self.0) as *const _;
-            let len = llvm::LLVMRustThinLTOBufferThinLinkDataLen(self.0);
+            let ptr = llvm::LLVMRustThinLTOBufferPtr(self.0) as *const _;
+            let len = llvm::LLVMRustThinLTOBufferLen(self.0);
             slice::from_raw_parts(ptr, len)
         }
     }

compiler/rustc_codegen_llvm/src/back/write.rs

@@ -837,7 +837,7 @@ pub(crate) fn codegen(
                         "LLVM_module_codegen_make_bitcode",
                         &*module.name,
                     );
-                    ThinBuffer::new(llmod, config.emit_thin_lto, false)
+                    ThinBuffer::new(llmod, config.emit_thin_lto)
                 };
                 let data = thin.data();
                 let _timer = cgcx