PowerPC inline ASM: Fix scalar floats being in the wrong vector lane on little endian - #160441

PowerPC inline ASM: Fix scalar floats being in the wrong vector lane on little endian


try-job: i686-gnu-nopt-1

…e, r=Amanieu

PowerPC inline ASM: Fix scalar floats being in the wrong vector lane on little endian

64-bit PowerPC supports both big and little endian, however registers are always big endian. As a consequence of this, the order of vector lanes is reversed on little endian; however scalar `f32` and `f64` are always stored in the actual (big-endian) lane 0. This PR fixes the LLVM ASM fixup to take that into account.

Ping target maintainers: @daltenty @gilamn5tr @amy-kwan @Gelbpunkt @famfo @neuschaefer

…e, r=Amanieu

PowerPC inline ASM: Fix scalar floats being in the wrong vector lane on little endian

64-bit PowerPC supports both big and little endian, however registers are always big endian. As a consequence of this, the order of vector lanes is reversed on little endian; however scalar `f32` and `f64` are always stored in the actual (big-endian) lane 0. This PR fixes the LLVM ASM fixup to take that into account.

Ping target maintainers: @daltenty @gilamn5tr @amy-kwan @Gelbpunkt @famfo @neuschaefer

…uwer

Rollup of 11 pull requests

Successful merges:

 - #158510 (Enable `static_position_independent_executables` on all gnu targets)
 - #160441 (PowerPC inline ASM: Fix scalar floats being in the wrong vector lane on little endian)
 - #160760 (Miri: give the incremental session a chance to finish)
 - #160892 (Inline some hot new-solver functions)
 - #160821 (Updates the expect messages in library/std/src/net/udp.rs to follow the style guide)
 - #160997 (Add an AGENTS.md that enforces the LLM policy)
 - #161057 (Silence unecessary errors on `Vec<foo::Bar>` to `Vec<foo:Bar>` typo)
 - #161079 (bootstrap: Clean up imports related to `define_config!` and `check_ci_llvm!`)
 - #161080 (propagate `RerunNonErased` in `projection_may_match`)
 - #161085 (bootstrap: Restrict the normalization of relative paths)
 - #161086 (add crashtests [3/N])

Rollup merge of #160441 - beetrees:inline-asm-fix-powerpc64le, r=Amanieu

PowerPC inline ASM: Fix scalar floats being in the wrong vector lane on little endian

64-bit PowerPC supports both big and little endian, however registers are always big endian. As a consequence of this, the order of vector lanes is reversed on little endian; however scalar `f32` and `f64` are always stored in the actual (big-endian) lane 0. This PR fixes the LLVM ASM fixup to take that into account.

Ping target maintainers: @daltenty @gilamn5tr @amy-kwan @Gelbpunkt @famfo @neuschaefer

Rollup merge of #160441 - beetrees:inline-asm-fix-powerpc64le, r=Amanieu

PowerPC inline ASM: Fix scalar floats being in the wrong vector lane on little endian

64-bit PowerPC supports both big and little endian, however registers are always big endian. As a consequence of this, the order of vector lanes is reversed on little endian; however scalar `f32` and `f64` are always stored in the actual (big-endian) lane 0. This PR fixes the LLVM ASM fixup to take that into account.

Ping target maintainers: @daltenty @gilamn5tr @amy-kwan @Gelbpunkt @famfo @neuschaefer

…uwer

Rollup of 11 pull requests

Successful merges:

 - rust-lang/rust#158510 (Enable `static_position_independent_executables` on all gnu targets)
 - rust-lang/rust#160441 (PowerPC inline ASM: Fix scalar floats being in the wrong vector lane on little endian)
 - rust-lang/rust#160760 (Miri: give the incremental session a chance to finish)
 - rust-lang/rust#160892 (Inline some hot new-solver functions)
 - rust-lang/rust#160821 (Updates the expect messages in library/std/src/net/udp.rs to follow the style guide)
 - rust-lang/rust#160997 (Add an AGENTS.md that enforces the LLM policy)
 - rust-lang/rust#161057 (Silence unecessary errors on `Vec<foo::Bar>` to `Vec<foo:Bar>` typo)
 - rust-lang/rust#161079 (bootstrap: Clean up imports related to `define_config!` and `check_ci_llvm!`)
 - rust-lang/rust#161080 (propagate `RerunNonErased` in `projection_may_match`)
 - rust-lang/rust#161085 (bootstrap: Restrict the normalization of relative paths)
 - rust-lang/rust#161086 (add crashtests [3/N])

Pkgsrc changes:
 * Adapt to changes in vendored crate versions.
 * Version & checksum changes.

Upstream changes:

Version 1.99.0 (2026-10-01)
==========================

Language
--------
- [Add allow-by-default `raw_borrows_via_references` lint that
  checks for references that decay immediately into raw
  borrows](rust-lang/rust#138230)
- [Extend `unconditional_panic` lint to function calls that panic
  when the chunks/windows size is zero]
  (rust-lang/rust#153563)
- [Stabilize C-variadic function definitions]
  (rust-lang/rust#155697)
- [Stabilize the ability to use `#[unsafe(naked)]` functions to
  define C-variadic functions (`#![feature(c_variadic_naked_functions)]`).]
  (rust-lang/rust#159746)
- [Trait methods are now resolved on an adjusted never type (producing a FCW)]
  (rust-lang/rust#156047)
- [Coerce from inference variables to trait objects if the inference
  variable is related via subtyping to a type that is known to be `Sized`]
  (rust-lang/rust#157820)
- [Stabilize `#[my_macro] mod foo;`]
  (rust-lang/rust#157857). This allows
  outlined modules (`mod foo;`) anywhere in the body of a custom
  attribute or derive macro.
- [Fix the `overflowing_literals` lint with repeated negation]
  (rust-lang/rust#158302). For instance,
  it will now no longer lint on `--128_i8`, which is already detected
  by the `arithmetic_overflow` lint.
- [Add POSIX symbols to the `invalid_runtime_symbol_definitions`
  and `suspicious_runtime_symbol_definitions` lints]
  (rust-lang/rust#158522)
- [Lint unused `#[path]` attributes on inline modules]
  (rust-lang/rust#158835)
- [Enable `unreachable_cfg_select_predicates` lint as part of
  `unused` lint group] (rust-lang/rust#159179)
- [Stabilize passing 128-bit integers via vector registers with `asm!` on x86]
  (rust-lang/rust#159525)
- [Explicitly document that some allocations are allowed to grow
  in-place (but none are allowed to shrink)]
  (rust-lang/rust#159729)
- We now [guarantee]
  (rust-lang/rust#159730) that the contents
  of an `UnsafeCell` can be accessed without going through `get`
  - [The `invalid_reference_casting` lint was adjusted accordingly]
  (rust-lang/rust#159960)
- [Account for globally enabled target features in `global_asm!`]
  (rust-lang/rust#160594)
- [Warn if an invalid `doc` attribute is used on a macro invocation]
  (rust-lang/rust#161003)

Compiler
--------
- [Convert `-Ctarget-cpu` into a target-modifier for AVR, AMDGCN and NVPTX]
  (rust-lang/rust#150732)
- [Enable `static_position_independent_executables` on all gnu and musl targets]
  (rust-lang/rust#158510)
- When providing a suggestion about a missing method, rustc now
  prefers an exactly matching name from a [doc alias attribute]
  (https://doc.rust-lang.org/rustdoc/advanced-features.html#add-aliases-for-an-item-in-documentation-search)
  over a similarity search from other method names. If your new
  users sometimes expect a method under a different name, adding
  a doc alias will now help them find it via rustc suggestions, in
  addition to helping them find it via rustdoc search: [When
  suggesting method names, prefer *exact* doc aliases over similar
  names](rust-lang/rust#160369)

Platform Support
----------------
- [Promote `riscv64-unknown-linux-musl` to Tier 2 with host tools]
  (rust-lang/rust#158766)

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

[platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html

Libraries
---------
- Iteration on `RangeInclusive` (`a..=b` ranges) is now [optimized
  better in some circumstances]
  (rust-lang/rust#155114). As a side effect
  of this, the behavior of `RangeInclusive` values that has already
  been exhausted (as an iterator) has changed. For example, the
  return values of `start()` and `end()` on such ranges may return
  different values, and using such ranges as slice indexes may have
  different behavior. These behaviors were not guaranteed to be
  stable, so these changes are considered to not be breaking changes.
- [Relax `transmute_copy` to accept `?Sized` types]
  (rust-lang/rust#155989)
- [Update `transmute_copy` to use a non-unwinding panic]
  (rust-lang/rust#155989)
- [Don't escape U+FF9E and U+FF9F in `escape_debug_ext`]
  (rust-lang/rust#158057)
- [Re-export `core::fmt::NumBuffer` in `alloc` (and `std`)]
  (rust-lang/rust#161430)

Stabilized APIs
---------------

- [`IntoIterator` for `Box<[T; N]>`]
  (https://doc.rust-lang.org/stable/std/iter/trait.IntoIterator.html#impl-IntoIterator-for-Box%3C%5BT;+N%5D,+A%3E)
- [`IntoIterator` for `&Box<[T; N]>`]
  (https://doc.rust-lang.org/stable/std/iter/trait.IntoIterator.html#impl-IntoIterator-for-%26Box%3C%5BT;+N%5D,+A%3E)
- [`IntoIterator` for `&mut Box<[T; N]>`]
  (https://doc.rust-lang.org/stable/std/iter/trait.IntoIterator.html#impl-IntoIterator-for-%26mut+Box%3C%5BT;+N%5D,+A%3E)
- [`VecDeque::retain_back`]
  (https://doc.rust-lang.org/stable/std/collections/struct.VecDeque.html#method.retain_back)
- [`core::ffi::VaList`]
  (https://doc.rust-lang.org/stable/core/ffi/struct.VaList.html)
- [`Box::into_non_null`]
  (https://doc.rust-lang.org/stable/std/boxed/struct.Box.html#method.into_non_null)
- [`Box::from_non_null`]
  (https://doc.rust-lang.org/stable/std/boxed/struct.Box.html#method.from_non_null)
- [`Vec::into_parts`]
  (https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#method.into_parts)
- [`Vec::from_parts`]
  (https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#method.from_parts)
- [`core::mem::size_of_val_raw`]
  (https://doc.rust-lang.org/stable/core/mem/fn.size_of_val_raw.html)
- [`core::mem::align_of_val_raw`]
  (https://doc.rust-lang.org/stable/core/mem/fn.align_of_val_raw.html)
- [`core::alloc::Layout::for_value_raw`]
  (https://doc.rust-lang.org/stable/core/alloc/struct.Layout.html#method.for_value_raw)
- [`String::from_utf8_lossy_owned`]
  (https://doc.rust-lang.org/stable/std/string/struct.String.html#method.from_utf8_lossy_owned)
- [`string::FromUtf8Error::into_utf8_lossy`]
  (https://doc.rust-lang.org/stable/std/string/struct.FromUtf8Error.html#method.into_utf8_lossy)
- [`FusedIterator for StepBy<I>`]
  (https://doc.rust-lang.org/stable/std/iter/struct.StepBy.html#impl-FusedIterator-for-StepBy%3CI%3E)
- [`std::fs::set_times`]
  (https://doc.rust-lang.org/stable/std/fs/fn.set_times.html)
- [`std::fs::set_times_nofollow`]
  (https://doc.rust-lang.org/stable/std/fs/fn.set_times_nofollow.html)

Cargo
-----
- Add a new built-in profile `debug`. This is a preparation for
  transitioning the `dev` profile away from debugging to give a saner
  default for faster development iterations. Currently there is no
  difference between `dev` and `debug` profiles. [docs]
  (https://doc.rust-lang.org/nightly/cargo/reference/profiles.html#debug-1)
  [#17214] (rust-lang/cargo#17214)
- Workspace members on edition 2024 or later can now override an
  inherited workspace dependency's `default-features` field. For
  example, `serde = { workspace = true, default-features = false }`
  now turns off default features even when the workspace definition
  enables them. On earlier editions, `default-features = false` is
  ignored with a warning. ([RFC 3945]
  (rust-lang/rfcs#3945))
  [#17126](rust-lang/cargo#17126)
- Incremental compilation is now disabled by default when running
  in CI. CI is detected via the CI environment variable. [#17220]
  (rust-lang/cargo#17220)
  See also the [full Cargo changelog]
  (https://doc.rust-lang.org/nightly/cargo/CHANGELOG.html#cargo-199-2026-10-01)

Rustdoc
-----
- [Add new `unused_footnote_definition` rustdoc lint]
  (rust-lang/rust#137858)
- Smarter filtering of trait impls yields performance improvements
  of 20% on average and up to 40% on some real-world crates. ([1]
  (rust-lang/rust#159623),
  [2](rust-lang/rust#159721),
  [3](rust-lang/rust#159779),
  [4](rust-lang/rust#159854),
  [5](rust-lang/rust#159091))

Compatibility Notes
-------------------
- [Fully deprecate the legacy integral modules]
  (rust-lang/rust#146882). For example,
  `std::i32::MAX` should be accessed via `i32::MAX` instead.
- [Upgrade `no_mangle_generic_items` into hard error]
  (rust-lang/rust#154585)
- [The `Pin::new_unchecked` has had its safety invariants changed slightly]
  (rust-lang/rust#156935)
- [Do not promote references to extern statics]
  (rust-lang/rust#157641)
- [Ensure that the inferred types of `let` patterns typecheck]
  (rust-lang/rust#157841)
- [hermit/fs: Return `unsupported()` instead of `from_raw_os_error(22)`]
  (rust-lang/rust#158247)
- [Fixed a bug where `#[repr(simd)]` was accidentally allowed on
  macro invocations on stable Rust]
  (rust-lang/rust#158523)
- [Abort const-eval when there are generics in the type of the
  value being produced]
  (rust-lang/rust#159504)
- [Attributes not applying to anything are now an error in code
  blocks in doc comments]
  (rust-lang/rust#159849)
- [`Box::leak`: tell people to avoid unleaking]
  (rust-lang/rust#160323)
- [PowerPC inline ASM: Fix scalar floats being in the wrong vector
  lane on little endian] (rust-lang/rust#160441)
- [Do not take `doc(cfg())` into account when filtering doctests]
  (rust-lang/rust#159014)
- [Infer anonymous lifetimes in the types of associated consts as `'static`]
  (rust-lang/rust#156508)
- Macros that expand to a semicolon now produce a warning lint
  (`semicolon_in_expressions_from_non_local_macros`) even when the
  macro comes from another crate. Previously, such warnings only
  appeared for macros from the same crate, to avoid showing warnings
  that can't be fixed locally; however, this masked problems, as
  integration tests from the crate providing the macro get compiled
  as a separate crate, so tests often wouldn't reveal this issue. If
  you encounter a lint like this, please make sure to report it to
  the crate providing the macro so they can fix it; don't just silence
  it in your own crate.
  - [`semicolon_in_expressions_from_macros`: Lint on non-local
    macros too] (rust-lang/rust#159222)
  - [Split non-local `semicolon_in_expressions_from_macros` into
    a separate lint] (rust-lang/rust#159700)

Internal Changes
----------------

These changes do not affect any public interfaces of Rust, but they represent
significant improvements to the performance or internals of rustc and related
tools.

- [Update to LLVM 23]
  (rust-lang/rust#158734)