Merge from rustc

Author: RalfJung

Cargo.lock

@@ -722,6 +722,18 @@ version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e496a50fda8aacccc86d7529e2c1e0892dbd0f898a6b5645b5561b89c3210efa"
 
+[[package]]
+name = "coverage-dump"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "leb128",
+ "md-5",
+ "miniz_oxide",
+ "regex",
+ "rustc-demangle",
+]
+
 [[package]]
 name = "coverage_test_macros"
 version = "0.0.0"
@@ -2041,6 +2053,12 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
+[[package]]
+name = "leb128"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "884e2677b40cc8c339eaefcb701c32ef1fd2493d71118dc0ca4b6a736c93bd67"
+
 [[package]]
 name = "levenshtein"
 version = "1.0.5"
@@ -4228,7 +4246,6 @@ dependencies = [
  "measureme",
  "memoffset",
  "rustc-rayon-core",
- "rustc_ast",
  "rustc_data_structures",
  "rustc_errors",
  "rustc_hir",
@@ -4437,15 +4454,12 @@ dependencies = [
 name = "rustc_traits"
 version = "0.0.0"
 dependencies = [
- "rustc_ast",
  "rustc_data_structures",
  "rustc_hir",
  "rustc_infer",
  "rustc_middle",
  "rustc_span",
- "rustc_target",
  "rustc_trait_selection",
- "smallvec",
  "tracing",
 ]
 

Cargo.toml

@@ -43,6 +43,7 @@ members = [
   "src/tools/generate-windows-sys",
   "src/tools/rustdoc-gui-test",
   "src/tools/opt-dist",
+  "src/tools/coverage-dump",
 ]
 
 exclude = [

RELEASES.md

@@ -10,9 +10,9 @@ Language
 - [expand: Change how `#![cfg(FALSE)]` behaves on crate root](https://github.com/rust-lang/rust/pull/110141/)
 - [Stabilize inline asm for LoongArch64](https://github.com/rust-lang/rust/pull/111235/)
 - [Uplift `clippy::undropped_manually_drops` lint](https://github.com/rust-lang/rust/pull/111530/)
-- [Uplift `clippy::invalid_utf8_in_unchecked` lint](https://github.com/rust-lang/rust/pull/111543/)
-- [Uplift `clippy::cast_ref_to_mut` lint](https://github.com/rust-lang/rust/pull/111567/)
-- [Uplift `clippy::cmp_nan` lint](https://github.com/rust-lang/rust/pull/111818/)
+- [Uplift `clippy::invalid_utf8_in_unchecked` lint](https://github.com/rust-lang/rust/pull/111543/) as `invalid_from_utf8_unchecked` and `invalid_from_utf8`
+- [Uplift `clippy::cast_ref_to_mut` lint](https://github.com/rust-lang/rust/pull/111567/) as `invalid_reference_casting`
+- [Uplift `clippy::cmp_nan` lint](https://github.com/rust-lang/rust/pull/111818/) as `invalid_nan_comparisons`
 - [resolve: Remove artificial import ambiguity errors](https://github.com/rust-lang/rust/pull/112086/)
 - [Don't require associated types with Self: Sized bounds in `dyn Trait` objects](https://github.com/rust-lang/rust/pull/112319/)
 

compiler/rustc_ast/src/tokenstream.rs

@@ -213,14 +213,10 @@ impl AttrTokenStream {
                         .into_iter()
                 }
                 AttrTokenTree::Attributes(data) => {
-                    let mut outer_attrs = Vec::new();
-                    let mut inner_attrs = Vec::new();
-                    for attr in &data.attrs {
-                        match attr.style {
-                            crate::AttrStyle::Outer => outer_attrs.push(attr),
-                            crate::AttrStyle::Inner => inner_attrs.push(attr),
-                        }
-                    }
+                    let idx = data
+                        .attrs
+                        .partition_point(|attr| matches!(attr.style, crate::AttrStyle::Outer));
+                    let (outer_attrs, inner_attrs) = data.attrs.split_at(idx);
 
                     let mut target_tokens: Vec<_> = data
                         .tokens
@@ -265,10 +261,10 @@ impl AttrTokenStream {
                             "Failed to find trailing delimited group in: {target_tokens:?}"
                         );
                     }
-                    let mut flat: SmallVec<[_; 1]> = SmallVec::new();
+                    let mut flat: SmallVec<[_; 1]> =
+                        SmallVec::with_capacity(target_tokens.len() + outer_attrs.len());
                     for attr in outer_attrs {
-                        // FIXME: Make this more efficient
-                        flat.extend(attr.tokens().0.clone().iter().cloned());
+                        flat.extend(attr.tokens().0.iter().cloned());
                     }
                     flat.extend(target_tokens);
                     flat.into_iter()

compiler/rustc_borrowck/src/lib.rs

@@ -603,7 +603,7 @@ impl<'cx, 'tcx, R> rustc_mir_dataflow::ResultsVisitor<'cx, 'tcx, R> for MirBorro
 
     fn visit_statement_before_primary_effect(
         &mut self,
-        _results: &R,
+        _results: &mut R,
         flow_state: &Flows<'cx, 'tcx>,
         stmt: &'cx Statement<'tcx>,
         location: Location,
@@ -673,7 +673,7 @@ impl<'cx, 'tcx, R> rustc_mir_dataflow::ResultsVisitor<'cx, 'tcx, R> for MirBorro
 
     fn visit_terminator_before_primary_effect(
         &mut self,
-        _results: &R,
+        _results: &mut R,
         flow_state: &Flows<'cx, 'tcx>,
         term: &'cx Terminator<'tcx>,
         loc: Location,
@@ -784,7 +784,7 @@ impl<'cx, 'tcx, R> rustc_mir_dataflow::ResultsVisitor<'cx, 'tcx, R> for MirBorro
 
     fn visit_terminator_after_primary_effect(
         &mut self,
-        _results: &R,
+        _results: &mut R,
         flow_state: &Flows<'cx, 'tcx>,
         term: &'cx Terminator<'tcx>,
         loc: Location,

compiler/rustc_codegen_cranelift/src/debuginfo/line_info.rs

@@ -82,12 +82,9 @@ impl DebugContext {
         match tcx.sess.source_map().lookup_line(span.lo()) {
             Ok(SourceFileAndLine { sf: file, line }) => {
                 let line_pos = file.lines(|lines| lines[line]);
+                let col = file.relative_position(span.lo()) - line_pos;
 
-                (
-                    file,
-                    u64::try_from(line).unwrap() + 1,
-                    u64::from((span.lo() - line_pos).to_u32()) + 1,
-                )
+                (file, u64::try_from(line).unwrap() + 1, u64::from(col.to_u32()) + 1)
             }
             Err(file) => (file, 0, 0),
         }

compiler/rustc_codegen_llvm/src/debuginfo/create_scope_map.rs

@@ -68,7 +68,7 @@ fn make_mir_scope<'ll, 'tcx>(
         let file = cx.sess().source_map().lookup_source_file(mir.span.lo());
         debug_context.scopes[scope] = DebugScope {
             file_start_pos: file.start_pos,
-            file_end_pos: file.end_pos,
+            file_end_pos: file.end_position(),
             ..debug_context.scopes[scope]
         };
         instantiated.insert(scope);
@@ -120,7 +120,7 @@ fn make_mir_scope<'ll, 'tcx>(
         dbg_scope,
         inlined_at: inlined_at.or(parent_scope.inlined_at),
         file_start_pos: loc.file.start_pos,
-        file_end_pos: loc.file.end_pos,
+        file_end_pos: loc.file.end_position(),
     };
     instantiated.insert(scope);
 }

compiler/rustc_codegen_llvm/src/debuginfo/mod.rs

@@ -267,7 +267,7 @@ impl CodegenCx<'_, '_> {
 
                 // Use 1-based indexing.
                 let line = (line + 1) as u32;
-                let col = (pos - line_pos).to_u32() + 1;
+                let col = (file.relative_position(pos) - line_pos).to_u32() + 1;
 
                 (file, line, col)
             }

compiler/rustc_const_eval/src/const_eval/eval_queries.rs

@@ -79,7 +79,7 @@ fn eval_body_using_ecx<'mir, 'tcx>(
     intern_const_alloc_recursive(ecx, intern_kind, &ret)?;
     // we leave alignment checks off, since this `ecx` will not be used for further evaluation anyway
 
-    debug!("eval_body_using_ecx done: {:?}", *ret);
+    debug!("eval_body_using_ecx done: {:?}", ret);
     Ok(ret)
 }
 
@@ -147,7 +147,7 @@ pub(super) fn op_to_const<'tcx>(
     // We know `offset` is relative to the allocation, so we can use `into_parts`.
     let to_const_value = |mplace: &MPlaceTy<'_>| {
         debug!("to_const_value(mplace: {:?})", mplace);
-        match mplace.ptr.into_parts() {
+        match mplace.ptr().into_parts() {
             (Some(alloc_id), offset) => {
                 let alloc = ecx.tcx.global_alloc(alloc_id).unwrap_memory();
                 ConstValue::ByRef { alloc, offset }
@@ -370,7 +370,7 @@ pub fn eval_to_allocation_raw_provider<'tcx>(
                     inner = true;
                 }
             };
-            let alloc_id = mplace.ptr.provenance.unwrap();
+            let alloc_id = mplace.ptr().provenance.unwrap();
 
             // Validation failed, report an error. This is always a hard error.
             if let Err(error) = validation {

compiler/rustc_const_eval/src/const_eval/mod.rs

@@ -30,7 +30,7 @@ pub(crate) fn const_caller_location(
     if intern_const_alloc_recursive(&mut ecx, InternKind::Constant, &loc_place).is_err() {
         bug!("intern_const_alloc_recursive should not error in this case")
     }
-    ConstValue::Scalar(Scalar::from_maybe_pointer(loc_place.ptr, &tcx))
+    ConstValue::Scalar(Scalar::from_maybe_pointer(loc_place.ptr(), &tcx))
 }
 
 // We forbid type-level constants that contain more than `VALTREE_MAX_NODES` nodes.