Rollup of 7 pull requests

src/doc/unstable-book/src/compiler-flags/self-profile.md

@@ -13,7 +13,7 @@ For example:
 First, run a compilation session and provide the `-Zself-profile` flag:
 
 ```console
-$ rustc --crate-name foo -Zself-profile`
+$ rustc --crate-name foo -Zself-profile
 ```
 
 This will generate three files in the working directory such as:

src/liballoc/lib.rs

@@ -87,7 +87,7 @@
 #![feature(const_generic_impls_guard)]
 #![feature(const_generics)]
 #![feature(const_in_array_repeat_expressions)]
-#![feature(const_if_match)]
+#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(cow_is_borrowed)]
 #![feature(dispatch_from_dyn)]
 #![feature(core_intrinsics)]

src/libcore/lib.rs

@@ -73,8 +73,8 @@
 #![feature(const_ascii_ctype_on_intrinsics)]
 #![feature(const_alloc_layout)]
 #![feature(const_discriminant)]
-#![feature(const_if_match)]
-#![feature(const_loop)]
+#![cfg_attr(bootstrap, feature(const_if_match))]
+#![cfg_attr(bootstrap, feature(const_loop))]
 #![feature(const_checked_int_methods)]
 #![feature(const_euclidean_int_methods)]
 #![feature(const_overflowing_int_methods)]

src/libcore/num/mod.rs

@@ -1578,7 +1578,7 @@ $EndFeature, "
             #[stable(feature = "no_panic_abs", since = "1.13.0")]
             #[rustc_const_stable(feature = "const_int_methods", since = "1.32.0")]
             #[allow(unused_attributes)]
-            #[allow_internal_unstable(const_if_match)]
+            #[cfg_attr(bootstrap, allow_internal_unstable(const_if_match))]
             #[inline]
             pub const fn wrapping_abs(self) -> Self {
                  if self.is_negative() {
@@ -1867,7 +1867,7 @@ assert_eq!(", stringify!($SelfT), "::MIN.overflowing_neg(), (", stringify!($Self
             #[stable(feature = "wrapping", since = "1.7.0")]
             #[rustc_const_stable(feature = "const_int_methods", since = "1.32.0")]
             #[allow(unused_attributes)]
-            #[allow_internal_unstable(const_if_match)]
+            #[cfg_attr(bootstrap, allow_internal_unstable(const_if_match))]
             pub const fn overflowing_neg(self) -> (Self, bool) {
                 if self == Self::MIN {
                     (Self::MIN, true)
@@ -2160,7 +2160,7 @@ $EndFeature, "
             #[stable(feature = "rust1", since = "1.0.0")]
             #[rustc_const_stable(feature = "const_int_methods", since = "1.32.0")]
             #[allow(unused_attributes)]
-            #[allow_internal_unstable(const_if_match)]
+            #[cfg_attr(bootstrap, allow_internal_unstable(const_if_match))]
             #[inline]
             #[rustc_inherit_overflow_checks]
             pub const fn abs(self) -> Self {

src/libprofiler_builtins/build.rs

@@ -24,6 +24,12 @@ fn main() {
         "InstrProfilingUtil.c",
         "InstrProfilingValue.c",
         "InstrProfilingWriter.c",
+        // This file was renamed in LLVM 10.
+        "InstrProfilingRuntime.cc",
+        "InstrProfilingRuntime.cpp",
+        // These files were added in LLVM 11.
+        "InstrProfilingInternal.c",
+        "InstrProfilingBiasVar.c",
     ];
 
     if target.contains("msvc") {
@@ -69,14 +75,12 @@ fn main() {
 
     let src_root = root.join("lib").join("profile");
     for src in profile_sources {
-        cfg.file(src_root.join(src));
+        let path = src_root.join(src);
+        if path.exists() {
+            cfg.file(path);
+        }
     }
 
-    // The file was renamed in LLVM 10.
-    let old_runtime_path = src_root.join("InstrProfilingRuntime.cc");
-    let new_runtime_path = src_root.join("InstrProfilingRuntime.cpp");
-    cfg.file(if old_runtime_path.exists() { old_runtime_path } else { new_runtime_path });
-
     cfg.include(root.join("include"));
     cfg.warnings(false);
     cfg.compile("profiler-rt");

src/librustc_ast/lib.rs

@@ -7,7 +7,7 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/", test(attr(deny(warnings))))]
 #![feature(bool_to_option)]
 #![feature(box_syntax)]
-#![feature(const_if_match)]
+#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_fn)] // For the `transmute` in `P::new`
 #![feature(const_panic)]
 #![feature(const_transmute)]

src/librustc_codegen_llvm/back/lto.rs

@@ -797,6 +797,7 @@ pub unsafe fn optimize_thin_module(
         kind: ModuleKind::Regular,
     };
     {
+        let target = &*module.module_llvm.tm;
         let llmod = module.module_llvm.llmod();
         save_temp_bitcode(&cgcx, &module, "thin-lto-input");
 
@@ -833,7 +834,7 @@ pub unsafe fn optimize_thin_module(
         {
             let _timer =
                 cgcx.prof.generic_activity_with_arg("LLVM_thin_lto_rename", thin_module.name());
-            if !llvm::LLVMRustPrepareThinLTORename(thin_module.shared.data.0, llmod) {
+            if !llvm::LLVMRustPrepareThinLTORename(thin_module.shared.data.0, llmod, target) {
                 let msg = "failed to prepare thin LTO module";
                 return Err(write::llvm_err(&diag_handler, msg));
             }
@@ -865,7 +866,7 @@ pub unsafe fn optimize_thin_module(
         {
             let _timer =
                 cgcx.prof.generic_activity_with_arg("LLVM_thin_lto_import", thin_module.name());
-            if !llvm::LLVMRustPrepareThinLTOImport(thin_module.shared.data.0, llmod) {
+            if !llvm::LLVMRustPrepareThinLTOImport(thin_module.shared.data.0, llmod, target) {
                 let msg = "failed to prepare thin LTO module";
                 return Err(write::llvm_err(&diag_handler, msg));
             }

src/librustc_codegen_llvm/llvm/ffi.rs

@@ -233,6 +233,8 @@ pub enum TypeKind {
     Metadata = 14,
     X86_MMX = 15,
     Token = 16,
+    ScalableVector = 17,
+    BFloat = 18,
 }
 
 impl TypeKind {
@@ -255,6 +257,8 @@ impl TypeKind {
             TypeKind::Metadata => rustc_codegen_ssa::common::TypeKind::Metadata,
             TypeKind::X86_MMX => rustc_codegen_ssa::common::TypeKind::X86_MMX,
             TypeKind::Token => rustc_codegen_ssa::common::TypeKind::Token,
+            TypeKind::ScalableVector => rustc_codegen_ssa::common::TypeKind::ScalableVector,
+            TypeKind::BFloat => rustc_codegen_ssa::common::TypeKind::BFloat,
         }
     }
 }
@@ -2141,10 +2145,18 @@ extern "C" {
         PreservedSymbols: *const *const c_char,
         PreservedSymbolsLen: c_uint,
     ) -> Option<&'static mut ThinLTOData>;
-    pub fn LLVMRustPrepareThinLTORename(Data: &ThinLTOData, Module: &Module) -> bool;
+    pub fn LLVMRustPrepareThinLTORename(
+        Data: &ThinLTOData,
+        Module: &Module,
+        Target: &TargetMachine,
+    ) -> bool;
     pub fn LLVMRustPrepareThinLTOResolveWeak(Data: &ThinLTOData, Module: &Module) -> bool;
     pub fn LLVMRustPrepareThinLTOInternalize(Data: &ThinLTOData, Module: &Module) -> bool;
-    pub fn LLVMRustPrepareThinLTOImport(Data: &ThinLTOData, Module: &Module) -> bool;
+    pub fn LLVMRustPrepareThinLTOImport(
+        Data: &ThinLTOData,
+        Module: &Module,
+        Target: &TargetMachine,
+    ) -> bool;
     pub fn LLVMRustGetThinLTOModuleImports(
         Data: *const ThinLTOData,
         ModuleNameCallback: ThinLTOModuleNameCallback,

src/librustc_codegen_ssa/common.rs

@@ -98,6 +98,8 @@ pub enum TypeKind {
     Metadata,
     X86_MMX,
     Token,
+    ScalableVector,
+    BFloat,
 }
 
 // FIXME(mw): Anything that is produced via DepGraph::with_task() must implement

src/librustc_errors/json.rs

@@ -36,6 +36,7 @@ pub struct JsonEmitter {
     pretty: bool,
     ui_testing: bool,
     json_rendered: HumanReadableErrorType,
+    terminal_width: Option<usize>,
     macro_backtrace: bool,
 }
 
@@ -45,6 +46,7 @@ impl JsonEmitter {
         source_map: Lrc<SourceMap>,
         pretty: bool,
         json_rendered: HumanReadableErrorType,
+        terminal_width: Option<usize>,
         macro_backtrace: bool,
     ) -> JsonEmitter {
         JsonEmitter {
@@ -54,13 +56,15 @@ impl JsonEmitter {
             pretty,
             ui_testing: false,
             json_rendered,
+            terminal_width,
             macro_backtrace,
         }
     }
 
     pub fn basic(
         pretty: bool,
         json_rendered: HumanReadableErrorType,
+        terminal_width: Option<usize>,
         macro_backtrace: bool,
     ) -> JsonEmitter {
         let file_path_mapping = FilePathMapping::empty();
@@ -69,6 +73,7 @@ impl JsonEmitter {
             Lrc::new(SourceMap::new(file_path_mapping)),
             pretty,
             json_rendered,
+            terminal_width,
             macro_backtrace,
         )
     }
@@ -79,6 +84,7 @@ impl JsonEmitter {
         source_map: Lrc<SourceMap>,
         pretty: bool,
         json_rendered: HumanReadableErrorType,
+        terminal_width: Option<usize>,
         macro_backtrace: bool,
     ) -> JsonEmitter {
         JsonEmitter {
@@ -88,6 +94,7 @@ impl JsonEmitter {
             pretty,
             ui_testing: false,
             json_rendered,
+            terminal_width,
             macro_backtrace,
         }
     }
@@ -247,7 +254,13 @@ impl Diagnostic {
         let buf = BufWriter::default();
         let output = buf.clone();
         je.json_rendered
-            .new_emitter(Box::new(buf), Some(je.sm.clone()), false, None, je.macro_backtrace)
+            .new_emitter(
+                Box::new(buf),
+                Some(je.sm.clone()),
+                false,
+                je.terminal_width,
+                je.macro_backtrace,
+            )
             .ui_testing(je.ui_testing)
             .emit_diagnostic(diag);
         let output = Arc::try_unwrap(output.0).unwrap().into_inner().unwrap();

src/librustc_feature/accepted.rs

@@ -261,6 +261,10 @@ declare_features! (
     (accepted, transparent_enums, "1.42.0", Some(60405), None),
     /// Allows using subslice patterns, `[a, .., b]` and `[a, xs @ .., b]`.
     (accepted, slice_patterns, "1.42.0", Some(62254), None),
+    /// Allows the use of `if` and `match` in constants.
+    (accepted, const_if_match, "1.45.0", Some(49146), None),
+    /// Allows the use of `loop` and `while` in constants.
+    (accepted, const_loop, "1.45.0", Some(52000), None),
 
     // -------------------------------------------------------------------------
     // feature-group-end: accepted features

src/librustc_feature/active.rs

@@ -518,9 +518,6 @@ declare_features! (
     /// Allows using the `#[register_tool]` attribute.
     (active, register_tool, "1.41.0", Some(66079), None),
 
-    /// Allows the use of `if` and `match` in constants.
-    (active, const_if_match, "1.41.0", Some(49146), None),
-
     /// Allows the use of `#[cfg(sanitize = "option")]`; set when -Zsanitizer is used.
     (active, cfg_sanitize, "1.41.0", Some(39699), None),
 
@@ -530,9 +527,6 @@ declare_features! (
     /// Allows using `&mut` in constant functions.
     (active, const_mut_refs, "1.41.0", Some(57349), None),
 
-    /// Allows the use of `loop` and `while` in constants.
-    (active, const_loop, "1.41.0", Some(52000), None),
-
     /// Allows bindings in the subpattern of a binding pattern.
     /// For example, you can write `x @ Some(y)`.
     (active, bindings_after_at, "1.41.0", Some(65490), None),

src/librustc_hir/lib.rs

@@ -3,7 +3,7 @@
 //! [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/hir.html
 
 #![feature(crate_visibility_modifier)]
-#![feature(const_if_match)]
+#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_fn)] // For the unsizing cast on `&[]`
 #![feature(const_panic)]
 #![feature(in_band_lifetimes)]

src/librustc_index/lib.rs

@@ -1,5 +1,5 @@
 #![feature(allow_internal_unstable)]
-#![feature(const_if_match)]
+#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_fn)]
 #![feature(const_panic)]
 #![feature(extend_one)]

src/librustc_infer/infer/error_reporting/nice_region_error/find_anon_type.rs

@@ -28,30 +28,27 @@ impl<'a, 'tcx> NiceRegionError<'a, 'tcx> {
         br: &ty::BoundRegion,
     ) -> Option<(&hir::Ty<'tcx>, &hir::FnDecl<'tcx>)> {
         if let Some(anon_reg) = self.tcx().is_suitable_region(region) {
-            let def_id = anon_reg.def_id;
-            if let Some(def_id) = def_id.as_local() {
-                let hir_id = self.tcx().hir().as_local_hir_id(def_id);
-                let fndecl = match self.tcx().hir().get(hir_id) {
-                    Node::Item(&hir::Item { kind: hir::ItemKind::Fn(ref m, ..), .. })
-                    | Node::TraitItem(&hir::TraitItem {
-                        kind: hir::TraitItemKind::Fn(ref m, ..),
-                        ..
-                    })
-                    | Node::ImplItem(&hir::ImplItem {
-                        kind: hir::ImplItemKind::Fn(ref m, ..),
-                        ..
-                    }) => &m.decl,
-                    _ => return None,
-                };
+            let hir_id = self.tcx().hir().as_local_hir_id(anon_reg.def_id);
+            let fndecl = match self.tcx().hir().get(hir_id) {
+                Node::Item(&hir::Item { kind: hir::ItemKind::Fn(ref m, ..), .. })
+                | Node::TraitItem(&hir::TraitItem {
+                    kind: hir::TraitItemKind::Fn(ref m, ..),
+                    ..
+                })
+                | Node::ImplItem(&hir::ImplItem {
+                    kind: hir::ImplItemKind::Fn(ref m, ..), ..
+                }) => &m.decl,
+                _ => return None,
+            };
 
-                return fndecl
-                    .inputs
-                    .iter()
-                    .find_map(|arg| self.find_component_for_bound_region(arg, br))
-                    .map(|ty| (ty, &**fndecl));
-            }
+            fndecl
+                .inputs
+                .iter()
+                .find_map(|arg| self.find_component_for_bound_region(arg, br))
+                .map(|ty| (ty, &**fndecl))
+        } else {
+            None
         }
-        None
     }
 
     // This method creates a FindNestedTypeVisitor which returns the type corresponding

src/librustc_infer/infer/error_reporting/nice_region_error/named_anon_conflict.rs

@@ -75,8 +75,7 @@ impl<'a, 'tcx> NiceRegionError<'a, 'tcx> {
         }
 
         if let Some((_, fndecl)) = self.find_anon_type(anon, &br) {
-            let is_self_anon = self.is_self_anon(is_first, scope_def_id);
-            if is_self_anon {
+            if self.is_self_anon(is_first, scope_def_id) {
                 return None;
             }