Auto merge of rust-lang#3667 - RalfJung:rustup, r=RalfJung

Rustup

Author: bors

Cargo.lock

@@ -1,3 +1,131 @@
+Version 1.79.0 (2024-06-13)
+==========================
+
+<a id="1.79.0-Language"></a>
+
+Language
+--------
+- [Stabilize inline `const {}` expressions.](https://github.com/rust-lang/rust/pull/104087/)
+- [Prevent opaque types being instantiated twice with different regions within the same function.](https://github.com/rust-lang/rust/pull/116935/)
+- [Stabilize WebAssembly target features that are in phase 4 and 5.](https://github.com/rust-lang/rust/pull/117457/)
+- [Add the `redundant_lifetimes` lint to detect lifetimes which are semantically redundant.](https://github.com/rust-lang/rust/pull/118391/)
+- [Stabilize the `unnameable_types` lint for public types that can't be named.](https://github.com/rust-lang/rust/pull/120144/)
+- [Enable debuginfo in macros, and stabilize `-C collapse-macro-debuginfo` and `#[collapse_debuginfo]`.](https://github.com/rust-lang/rust/pull/120845/)
+- [Propagate temporary lifetime extension into `if` and `match` expressions.](https://github.com/rust-lang/rust/pull/121346/)
+- [Restrict promotion of `const fn` calls.](https://github.com/rust-lang/rust/pull/121557/)
+- [Warn against refining impls of crate-private traits with `refining_impl_trait` lint.](https://github.com/rust-lang/rust/pull/121720/)
+- [Stabilize associated type bounds (RFC 2289).](https://github.com/rust-lang/rust/pull/122055/)
+- [Stabilize importing `main` from other modules or crates.](https://github.com/rust-lang/rust/pull/122060/)
+- [Check return types of function types for well-formedness](https://github.com/rust-lang/rust/pull/115538)
+- [Rework `impl Trait` lifetime inference](https://github.com/rust-lang/rust/pull/116891/)
+- [Change inductive trait solver cycles to be ambiguous](https://github.com/rust-lang/rust/pull/122791)
+
+<a id="1.79.0-Compiler"></a>
+
+Compiler
+--------
+- [Define `-C strip` to only affect binaries, not artifacts like `.pdb`.](https://github.com/rust-lang/rust/pull/115120/)
+- [Stabilize `-Crelro-level` for controlling runtime link hardening.](https://github.com/rust-lang/rust/pull/121694/)
+- [Stabilize checking of `cfg` names and values at compile-time with `--check-cfg`.](https://github.com/rust-lang/rust/pull/123501/)
+  *Note that this only stabilizes the compiler part, the Cargo part is still unstable in this release.*
+- [Add `aarch64-apple-visionos` and `aarch64-apple-visionos-sim` tier 3 targets.](https://github.com/rust-lang/rust/pull/121419/)
+- [Add `riscv32ima-unknown-none-elf` tier 3 target.](https://github.com/rust-lang/rust/pull/122696/)
+- [Promote several Windows targets to tier 2](https://github.com/rust-lang/rust/pull/121712): `aarch64-pc-windows-gnullvm`, `i686-pc-windows-gnullvm`, and `x86_64-pc-windows-gnullvm`.
+
+Refer to Rust's [platform support page][platform-support-doc]
+for more information on Rust's tiered platform support.
+
+<a id="1.79.0-Libraries"></a>
+
+Libraries
+---------
+
+- [Implement `FromIterator` for `(impl Default + Extend, impl Default + Extend)`.](https://github.com/rust-lang/rust/pull/107462/)
+- [Implement `{Div,Rem}Assign<NonZero<X>>` on `X`.](https://github.com/rust-lang/rust/pull/121952/)
+- [Document overrides of `clone_from()` in core/std.](https://github.com/rust-lang/rust/pull/122201/)
+- [Link MSVC default lib in core.](https://github.com/rust-lang/rust/pull/122268/)
+- [Caution against using `transmute` between pointers and integers.](https://github.com/rust-lang/rust/pull/122379/)
+- [Enable frame pointers for the standard library.](https://github.com/rust-lang/rust/pull/122646/)
+
+<a id="1.79.0-Stabilized-APIs"></a>
+
+Stabilized APIs
+---------------
+
+- [`{integer}::unchecked_add`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_add)
+- [`{integer}::unchecked_mul`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_mul)
+- [`{integer}::unchecked_sub`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_sub)
+- [`<[T]>::split_at_unchecked`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_unchecked)
+- [`<[T]>::split_at_mut_unchecked`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_unchecked)
+- [`<[u8]>::utf8_chunks`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.utf8_chunks)
+- [`str::Utf8Chunks`](https://doc.rust-lang.org/stable/core/str/struct.Utf8Chunks.html)
+- [`str::Utf8Chunk`](https://doc.rust-lang.org/stable/core/str/struct.Utf8Chunk.html)
+- [`<*const T>::is_aligned`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_aligned)
+- [`<*mut T>::is_aligned`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_aligned-1)
+- [`NonNull::is_aligned`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.is_aligned)
+- [`<*const [T]>::len`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.len)
+- [`<*mut [T]>::len`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.len-1)
+- [`<*const [T]>::is_empty`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_empty)
+- [`<*mut [T]>::is_empty`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_empty-1)
+- [`NonNull::<[T]>::is_empty`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.is_empty)
+- [`CStr::count_bytes`](https://doc.rust-lang.org/stable/core/ffi/c_str/struct.CStr.html#method.count_bytes)
+- [`io::Error::downcast`](https://doc.rust-lang.org/stable/std/io/struct.Error.html#method.downcast)
+- [`num::NonZero<T>`](https://doc.rust-lang.org/stable/core/num/struct.NonZero.html)
+- [`path::absolute`](https://doc.rust-lang.org/stable/std/path/fn.absolute.html)
+- [`proc_macro::Literal::byte_character`](https://doc.rust-lang.org/stable/proc_macro/struct.Literal.html#method.byte_character)
+- [`proc_macro::Literal::c_string`](https://doc.rust-lang.org/stable/proc_macro/struct.Literal.html#method.c_string)
+
+These APIs are now stable in const contexts:
+
+- [`Atomic*::into_inner`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicUsize.html#method.into_inner)
+- [`io::Cursor::new`](https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.new)
+- [`io::Cursor::get_ref`](https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.get_ref)
+- [`io::Cursor::position`](https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.position)
+- [`io::empty`](https://doc.rust-lang.org/stable/std/io/fn.empty.html)
+- [`io::repeat`](https://doc.rust-lang.org/stable/std/io/fn.repeat.html)
+- [`io::sink`](https://doc.rust-lang.org/stable/std/io/fn.sink.html)
+- [`panic::Location::caller`](https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.caller)
+- [`panic::Location::file`](https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.file)
+- [`panic::Location::line`](https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.line)
+- [`panic::Location::column`](https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.column)
+
+<a id="1.79.0-Cargo"></a>
+
+Cargo
+-----
+
+- [Prevent dashes in `lib.name`, always normalizing to `_`.](https://github.com/rust-lang/cargo/pull/12783/)
+- [Stabilize MSRV-aware version requirement selection in `cargo add`.](https://github.com/rust-lang/cargo/pull/13608/)
+- [Switch to using `gitoxide` by default for listing files.](https://github.com/rust-lang/cargo/pull/13696/)
+- [Error on `[project]` in Edition 2024; `cargo fix --edition` will change it to `[package]`.](https://github.com/rust-lang/cargo/pull/13747/)
+
+<a id="1.79.0-Rustdoc"></a>
+
+Rustdoc
+-----
+
+- [Always display stability version even if it's the same as the containing item.](https://github.com/rust-lang/rust/pull/118441/)
+- [Show a single search result for items with multiple paths.](https://github.com/rust-lang/rust/pull/119912/)
+- [Support typing `/` in docs to begin a search.](https://github.com/rust-lang/rust/pull/123355/)
+
+<a id="1.79.0-Misc"></a>
+
+Misc
+----
+
+<a id="1.79.0-Compatibility-Notes"></a>
+
+Compatibility Notes
+-------------------
+
+- [Update the minimum external LLVM to 17.](https://github.com/rust-lang/rust/pull/122649/)
+- [`RustcEncodable` and `RustcDecodable` are soft-destabilized, to be removed
+  from the prelude in next edition.](https://github.com/rust-lang/rust/pull/116016/)
+- [The `wasm_c_abi` future-incompatibility lint will warn about use of the
+  non-spec-compliant C ABI.](https://github.com/rust-lang/rust/pull/117918/)
+  Use `wasm-bindgen v0.2.88` to generate forward-compatible bindings.
+- [Check return types of function types for well-formedness](https://github.com/rust-lang/rust/pull/115538)
+
 Version 1.78.0 (2024-05-02)
 ==========================
 

RELEASES.md

@@ -9,7 +9,6 @@ rustc_data_structures = { path = "../rustc_data_structures", optional = true }
 rustc_macros = { path = "../rustc_macros", optional = true }
 rustc_serialize = { path = "../rustc_serialize", optional = true }
 rustc_span = { path = "../rustc_span", optional = true }
-smallvec = { version = "1.8.1" }
 # tidy-alphabetical-end
 
 [features]

compiler/rustc_ast_ir/Cargo.toml

@@ -9,7 +9,6 @@ icu_list = "1.2"
 icu_locid = "1.2"
 icu_locid_transform = "1.3.2"
 icu_provider = "1.2"
-icu_provider_adapters = "1.2"
 zerovec = "0.10.0"
 # tidy-alphabetical-end
 

compiler/rustc_baked_icu_data/Cargo.toml

@@ -832,9 +832,10 @@ fn codegen_stmt<'tcx>(
                     let val = match null_op {
                         NullOp::SizeOf => layout.size.bytes(),
                         NullOp::AlignOf => layout.align.abi.bytes(),
-                        NullOp::OffsetOf(fields) => {
-                            layout.offset_of_subfield(fx, fields.iter()).bytes()
-                        }
+                        NullOp::OffsetOf(fields) => fx
+                            .tcx
+                            .offset_of_subfield(ParamEnv::reveal_all(), layout, fields.iter())
+                            .bytes(),
                         NullOp::UbChecks => {
                             let val = fx.tcx.sess.ub_checks();
                             let val = CValue::by_val(

compiler/rustc_codegen_cranelift/src/base.rs

@@ -110,7 +110,7 @@ pub(crate) fn codegen_const_value<'tcx>(
                 if fx.clif_type(layout.ty).is_some() {
                     return CValue::const_val(fx, layout, int);
                 } else {
-                    let raw_val = int.size().truncate(int.assert_bits(int.size()));
+                    let raw_val = int.size().truncate(int.to_bits(int.size()));
                     let val = match int.size().bytes() {
                         1 => fx.bcx.ins().iconst(types::I8, raw_val as i64),
                         2 => fx.bcx.ins().iconst(types::I16, raw_val as i64),
@@ -501,12 +501,12 @@ pub(crate) fn mir_operand_get_const_val<'tcx>(
                                             Ordering::Equal => scalar_int,
                                             Ordering::Less => match ty.kind() {
                                                 ty::Uint(_) => ScalarInt::try_from_uint(
-                                                    scalar_int.assert_uint(scalar_int.size()),
+                                                    scalar_int.to_uint(scalar_int.size()),
                                                     fx.layout_of(*ty).size,
                                                 )
                                                 .unwrap(),
                                                 ty::Int(_) => ScalarInt::try_from_int(
-                                                    scalar_int.assert_int(scalar_int.size()),
+                                                    scalar_int.to_int(scalar_int.size()),
                                                     fx.layout_of(*ty).size,
                                                 )
                                                 .unwrap(),

compiler/rustc_codegen_cranelift/src/constant.rs

@@ -902,7 +902,7 @@ pub(crate) fn codegen_x86_llvm_intrinsic_call<'tcx>(
                         .span_fatal(span, "Index argument for `_mm_cmpestri` is not a constant");
                 };
 
-            let imm8 = imm8.try_to_u8().unwrap_or_else(|_| panic!("kind not scalar: {:?}", imm8));
+            let imm8 = imm8.to_u8();
 
             codegen_inline_asm_inner(
                 fx,
@@ -955,7 +955,7 @@ pub(crate) fn codegen_x86_llvm_intrinsic_call<'tcx>(
                         .span_fatal(span, "Index argument for `_mm_cmpestrm` is not a constant");
                 };
 
-            let imm8 = imm8.try_to_u8().unwrap_or_else(|_| panic!("kind not scalar: {:?}", imm8));
+            let imm8 = imm8.to_u8();
 
             codegen_inline_asm_inner(
                 fx,
@@ -1003,7 +1003,7 @@ pub(crate) fn codegen_x86_llvm_intrinsic_call<'tcx>(
                     );
                 };
 
-            let imm8 = imm8.try_to_u8().unwrap_or_else(|_| panic!("kind not scalar: {:?}", imm8));
+            let imm8 = imm8.to_u8();
 
             codegen_inline_asm_inner(
                 fx,
@@ -1040,7 +1040,7 @@ pub(crate) fn codegen_x86_llvm_intrinsic_call<'tcx>(
                     );
                 };
 
-            let imm8 = imm8.try_to_u8().unwrap_or_else(|_| panic!("kind not scalar: {:?}", imm8));
+            let imm8 = imm8.to_u8();
 
             codegen_inline_asm_inner(
                 fx,
@@ -1195,7 +1195,7 @@ pub(crate) fn codegen_x86_llvm_intrinsic_call<'tcx>(
                     .span_fatal(span, "Func argument for `_mm_sha1rnds4_epu32` is not a constant");
             };
 
-            let func = func.try_to_u8().unwrap_or_else(|_| panic!("kind not scalar: {:?}", func));
+            let func = func.to_u8();
 
             codegen_inline_asm_inner(
                 fx,

compiler/rustc_codegen_cranelift/src/intrinsics/llvm_x86.rs

@@ -147,8 +147,7 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
 
             let total_len = lane_count * 2;
 
-            let indexes =
-                idx.iter().map(|idx| idx.unwrap_leaf().try_to_u32().unwrap()).collect::<Vec<u32>>();
+            let indexes = idx.iter().map(|idx| idx.unwrap_leaf().to_u32()).collect::<Vec<u32>>();
 
             for &idx in &indexes {
                 assert!(u64::from(idx) < total_len, "idx {} out of range 0..{}", idx, total_len);
@@ -282,9 +281,7 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
                 fx.tcx.dcx().span_fatal(span, "Index argument for `simd_insert` is not a constant");
             };
 
-            let idx: u32 = idx_const
-                .try_to_u32()
-                .unwrap_or_else(|_| panic!("kind not scalar: {:?}", idx_const));
+            let idx: u32 = idx_const.to_u32();
             let (lane_count, _lane_ty) = base.layout().ty.simd_size_and_type(fx.tcx);
             if u64::from(idx) >= lane_count {
                 fx.tcx.dcx().span_fatal(
@@ -330,9 +327,7 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
                 return;
             };
 
-            let idx = idx_const
-                .try_to_u32()
-                .unwrap_or_else(|_| panic!("kind not scalar: {:?}", idx_const));
+            let idx = idx_const.to_u32();
             let (lane_count, _lane_ty) = v.layout().ty.simd_size_and_type(fx.tcx);
             if u64::from(idx) >= lane_count {
                 fx.tcx.dcx().span_fatal(

compiler/rustc_codegen_cranelift/src/intrinsics/simd.rs

@@ -327,7 +327,7 @@ impl<'tcx> CValue<'tcx> {
 
         let val = match layout.ty.kind() {
             ty::Uint(UintTy::U128) | ty::Int(IntTy::I128) => {
-                let const_val = const_val.assert_bits(layout.size);
+                let const_val = const_val.to_bits(layout.size);
                 let lsb = fx.bcx.ins().iconst(types::I64, const_val as u64 as i64);
                 let msb = fx.bcx.ins().iconst(types::I64, (const_val >> 64) as u64 as i64);
                 fx.bcx.ins().iconcat(lsb, msb)
@@ -339,7 +339,7 @@ impl<'tcx> CValue<'tcx> {
             | ty::Ref(..)
             | ty::RawPtr(..)
             | ty::FnPtr(..) => {
-                let raw_val = const_val.size().truncate(const_val.assert_bits(layout.size));
+                let raw_val = const_val.size().truncate(const_val.to_bits(layout.size));
                 fx.bcx.ins().iconst(clif_ty, raw_val as i64)
             }
             ty::Float(FloatTy::F32) => {

compiler/rustc_codegen_cranelift/src/value_and_place.rs

@@ -166,7 +166,7 @@ impl<'gcc, 'tcx> ConstMethods<'tcx> for CodegenCx<'gcc, 'tcx> {
         let bitsize = if layout.is_bool() { 1 } else { layout.size(self).bits() };
         match cv {
             Scalar::Int(int) => {
-                let data = int.assert_bits(layout.size(self));
+                let data = int.to_bits(layout.size(self));
 
                 // FIXME(antoyo): there's some issues with using the u128 code that follows, so hard-code
                 // the paths for floating-point values.

compiler/rustc_codegen_gcc/src/common.rs

@@ -244,7 +244,7 @@ impl<'ll, 'tcx> ConstMethods<'tcx> for CodegenCx<'ll, 'tcx> {
         let bitsize = if layout.is_bool() { 1 } else { layout.size(self).bits() };
         match cv {
             Scalar::Int(int) => {
-                let data = int.assert_bits(layout.size(self));
+                let data = int.to_bits(layout.size(self));
                 let llval = self.const_uint_big(self.type_ix(bitsize), data);
                 if matches!(layout.primitive(), Pointer(_)) {
                     unsafe { llvm::LLVMConstIntToPtr(llval, llty) }

compiler/rustc_codegen_llvm/src/common.rs

@@ -1109,10 +1109,12 @@ fn generic_simd_intrinsic<'ll, 'tcx>(
         tcx.normalize_erasing_late_bound_regions(ty::ParamEnv::reveal_all(), callee_ty.fn_sig(tcx));
     let arg_tys = sig.inputs();
 
-    // Vectors must be immediates (non-power-of-2 #[repr(packed)] are not)
-    for (ty, arg) in arg_tys.iter().zip(args) {
-        if ty.is_simd() && !matches!(arg.val, OperandValue::Immediate(_)) {
-            return_error!(InvalidMonomorphization::SimdArgument { span, name, ty: *ty });
+    // Sanity-check: all vector arguments must be immediates.
+    if cfg!(debug_assertions) {
+        for (ty, arg) in arg_tys.iter().zip(args) {
+            if ty.is_simd() {
+                assert!(matches!(arg.val, OperandValue::Immediate(_)));
+            }
         }
     }
 
@@ -1221,7 +1223,7 @@ fn generic_simd_intrinsic<'ll, 'tcx>(
             .iter()
             .enumerate()
             .map(|(arg_idx, val)| {
-                let idx = val.unwrap_leaf().try_to_i32().unwrap();
+                let idx = val.unwrap_leaf().to_i32();
                 if idx >= i32::try_from(total_len).unwrap() {
                     bx.sess().dcx().emit_err(InvalidMonomorphization::SimdIndexOutOfBounds {
                         span,

compiler/rustc_codegen_llvm/src/intrinsic.rs

@@ -163,7 +163,7 @@ pub fn asm_const_to_str<'tcx>(
     let mir::ConstValue::Scalar(scalar) = const_value else {
         span_bug!(sp, "expected Scalar for promoted asm const, but got {:#?}", const_value)
     };
-    let value = scalar.assert_bits(ty_and_layout.size);
+    let value = scalar.assert_scalar_int().to_bits(ty_and_layout.size);
     match ty_and_layout.ty.kind() {
         ty::Uint(_) => value.to_string(),
         ty::Int(int_ty) => match int_ty.normalize(tcx.sess.target.pointer_width) {

compiler/rustc_codegen_ssa/src/common.rs

@@ -680,7 +680,10 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
                         bx.cx().const_usize(val)
                     }
                     mir::NullOp::OffsetOf(fields) => {
-                        let val = layout.offset_of_subfield(bx.cx(), fields.iter()).bytes();
+                        let val = bx
+                            .tcx()
+                            .offset_of_subfield(bx.param_env(), layout, fields.iter())
+                            .bytes();
                         bx.cx().const_usize(val)
                     }
                     mir::NullOp::UbChecks => {