Target: Add mips mti baremetal support by wzssyqa · Pull Request #135074 · rust-lang/rust (original) (raw)

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Do the same thing as gcc, which use the vendor mti to mark the toolchain as MIPS32r2 default.

We support both big endian and little endian flavor:
mips-mti-none-elf
mipsel-mti-none-elf

Do the same thing as gcc, which use the vendor mti to mark the toolchain as MIPS32r2 default.

We support both big endian and little endian flavor: mips-mti-none-elf mipsel-mti-none-elf

r? @oli-obk

rustbot has assigned @oli-obk.
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rustbot added S-waiting-on-review

Status: Awaiting review from the assignee but also interested parties.

T-compiler

Relevant to the compiler team, which will review and decide on the PR/issue.

labels

Jan 3, 2025

These commits modify compiler targets.
(See the Target Tier Policy.)

Some changes occurred in src/doc/rustc/src/platform-support

cc @Noratrieb

I noticed #134721.
For baremetal toolchain, we may follow the gcc naming.

This comment has been minimized.

Who is maintaining the mips targets?

Who is maintaining the mips targets?

It's me. I am also the MIPS maintainer of GCC/LLVM mips maintainer.

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how is the new mipsel target different from mipsel-unknown-none and should the none target keep existing at all?

rustbot added S-waiting-on-author

Status: This is awaiting some action (such as code changes or more information) from the author.

and removed S-waiting-on-review

Status: Awaiting review from the assignee but also interested parties.

labels

Jan 5, 2025

Co-authored-by: Oli Scherer github35764891676564198441@oli-obk.de

how is the new mipsel target different from mipsel-unknown-none and should the none target keep existing at all?

Maybe we should remove unknown target or switch it to mips2 instead of mips32r2.
For the triple policy of MIPS in gcc, the default vendor (unknown) means mips1 (for 32bit) or mips3 (for 64bit).

We use the vendor mti for toolchains for MIPSr2, and img for MIPSr6.

If there is no objection, I will switch mipsel-unknown-none to mips2, due to LLVM has no mips1 support yet.

For -mti- toolchains we try to use lld instead of gnu ld, which is another difference.

@bors r+ rollup

Let's land this and look at the unknown target(s?) In follow-ups. If they have no users we should probably just remove them instead of doing sth that no one is testing that it works

📌 Commit 1a82287 has been approved by oli-obk

It is now in the queue for this repository.

bors added S-waiting-on-bors

Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

and removed S-waiting-on-author

Status: This is awaiting some action (such as code changes or more information) from the author.

labels

Jan 5, 2025

This was referenced

Jan 5, 2025

Finished benchmarking commit (7270e73): comparison URL.

Overall result: ❌✅ regressions and improvements - no action needed

@rustbot label: -perf-regression

Instruction count

This is the most reliable metric that we have; it was used to determine the overall result at the top of this comment. However, even this metric can sometimes exhibit noise.

mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.4%	[0.4%, 0.5%]	3
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.2%	[-0.2%, -0.2%]	1
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (primary -3.2%, secondary -1.7%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-3.2%	[-3.2%, -3.2%]	1
Improvements ✅ (secondary)	-1.7%	[-2.2%, -1.4%]	5
All ❌✅ (primary)	-3.2%	[-3.2%, -3.2%]	1

Cycles

Results (primary -2.3%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-2.3%	[-2.3%, -2.3%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-2.3%	[-2.3%, -2.3%]	1

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 763.624s -> 763.064s (-0.07%)
Artifact size: 325.63 MiB -> 325.65 MiB (0.01%)

cuviper added the relnotes

Marks issues that should be documented in the release notes of the next release.

label

Mar 21, 2025

wip-sync pushed a commit to NetBSD/pkgsrc-wip that referenced this pull request

Apr 9, 2025

Upstream changes relative to 1.85.1:

Version 1.86.0 (2025-04-03)

Language

[Stabilize upcasting trait objects to supertraits.] (rust-lang/rust#134367)
[Allow safe functions to be marked with the #[target_feature] attribute.] (rust-lang/rust#134090)
[The missing_abi lint now warns-by-default.] (rust-lang/rust#132397)
Rust now lints about double negations, to catch cases that might have intended to be a prefix decrement operator (--x) as written in other languages. This was previously a clippy lint, clippy::double_neg, and is [now available directly in Rust as double_negations.] (rust-lang/rust#126604)
[More pointers are now detected as definitely not-null based on their alignment in const eval.] (rust-lang/rust#133700)
[Empty repr() attribute applied to invalid items are now correctly rejected.] (rust-lang/rust#133925)
[Inner attributes #![test] and #![rustfmt::skip] are no longer accepted in more places than intended.] (rust-lang/rust#134276)

Compiler

[Debug-assert that raw pointers are non-null on access.] (rust-lang/rust#134424)
[Change -O to mean -C opt-level=3 instead of -C opt-level=2 to match Cargo's defaults.] (rust-lang/rust#135439)
[Fix emission of overflowing_literals under certain macro environments.] (rust-lang/rust#136393)

Platform Support

[Replace i686-unknown-redox target with i586-unknown-redox.] (rust-lang/rust#136698)
[Increase baseline CPU of i686-unknown-hurd-gnu to Pentium 4.] (rust-lang/rust#136700)
New tier 3 targets:
- [{aarch64-unknown,x86_64-pc}-nto-qnx710_iosock] (rust-lang/rust#133631). For supporting Neutrino QNX 7.1 with io-socket network stack.
- [{aarch64-unknown,x86_64-pc}-nto-qnx800] (rust-lang/rust#133631). For supporting Neutrino QNX 8.0 (no_std-only).
- [{x86_64,i686}-win7-windows-gnu] (rust-lang/rust#134609). Intended for backwards compatibility with Windows 7. {x86_64,i686}-win7-windows-msvc are the Windows MSVC counterparts that already exist as Tier 3 targets.
- amdgcn-amd-amdhsa.
- x86_64-pc-cygwin.
- [{mips,mipsel}-mti-none-elf] (rust-lang/rust#135074). Initial bare-metal support.
- m68k-unknown-none-elf.
- [armv7a-nuttx-{eabi,eabihf}, aarch64-unknown-nuttx, and thumbv7a-nuttx-{eabi,eabihf}] (rust-lang/rust#135757).

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

Libraries

The type of FromBytesWithNulError in CStr::from_bytes_with_nul(bytes: &[u8]) -> Result<&Self, FromBytesWithNulError> was [changed from an opaque struct to an enum] (rust-lang/rust#134143), allowing users to examine why the conversion failed.
[Remove RustcDecodable and RustcEncodable.] (rust-lang/rust#134272)
[Deprecate libtest's --logfile option.] (rust-lang/rust#134283)
[On recent versions of Windows, std::fs::remove_file will now remove read-only files.] (rust-lang/rust#134679)

Stabilized APIs

[{float}::next_down] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.next_down)
[{float}::next_up] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.next_up)
[<[_]>::get_disjoint_mut] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.get_disjoint_mut)
[<[_]>::get_disjoint_unchecked_mut] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.get_disjoint_unchecked_mut)
[slice::GetDisjointMutError] (https://doc.rust-lang.org/stable/std/slice/enum.GetDisjointMutError.html)
[HashMap::get_disjoint_mut] (https://doc.rust-lang.org/std/collections/hash_map/struct.HashMap.html#method.get_disjoint_mut)
[HashMap::get_disjoint_unchecked_mut] (https://doc.rust-lang.org/std/collections/hash_map/struct.HashMap.html#method.get_disjoint_unchecked_mut)
[NonZero::count_ones] (https://doc.rust-lang.org/stable/std/num/struct.NonZero.html#method.count_ones)
[Vec::pop_if] (https://doc.rust-lang.org/std/vec/struct.Vec.html#method.pop_if)
[sync::Once::wait] (https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.wait)
[sync::Once::wait_force] (https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.wait_force)
[sync::OnceLock::wait] (https://doc.rust-lang.org/stable/std/sync/struct.OnceLock.html#method.wait)

These APIs are now stable in const contexts:

[hint::black_box] (https://doc.rust-lang.org/stable/std/hint/fn.black_box.html)
[io::Cursor::get_mut] (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.get_mut)
[io::Cursor::set_position] (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.set_position)
[str::is_char_boundary] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.is_char_boundary)
[str::split_at] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at)
[str::split_at_checked] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_checked)
[str::split_at_mut] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_mut)
[str::split_at_mut_checked] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_mut_checked)

Cargo

[When merging, replace rather than combine configuration keys that refer to a program path and its arguments.] (rust-lang/cargo#15066)
[Error if both --package and --workspace are passed but the requested package is missing.] (rust-lang/cargo#15071) This was previously silently ignored, which was considered a bug since missing packages should be reported.
[Deprecate the token argument in cargo login to avoid shell history leaks.] (rust-lang/cargo#15057)
[Simplify the implementation of SourceID comparisons.] (rust-lang/cargo#14980) This may potentially change behavior if the canonicalized URL compares differently in alternative registries.

Rustdoc

[Add a sans-serif font setting.] (rust-lang/rust#133636)

Compatibility Notes

[The wasm_c_abi future compatibility warning is now a hard error.] (rust-lang/rust#133951) Users of wasm-bindgen should upgrade to at least version 0.2.89, otherwise compilation will fail.
[Remove long-deprecated no-op attributes #![no_start] and #![crate_id].] (rust-lang/rust#134300)
[The future incompatibility lint cenum_impl_drop_cast has been made into a hard error.] (rust-lang/rust#135964) This means it is now an error to cast a field-less enum to an integer if the enum implements Drop.
[SSE2 is now required for "i686" 32-bit x86 hard-float targets; disabling it causes a warning that will become a hard error eventually.] (rust-lang/rust#137037) To compile for pre-SSE2 32-bit x86, use a "i586" target instead.

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.

[Build the rustc on AArch64 Linux with ThinLTO + PGO.] (rust-lang/rust#133807) The ARM 64-bit compiler (AArch64) on Linux is now optimized with ThinLTO and PGO, similar to the optimizations we have already performed for the x86-64 compiler on Linux. This should make it up to 30% faster.

tmeijn pushed a commit to tmeijn/dotfiles that referenced this pull request

May 10, 2025

This MR contains the following updates:

Package	Update	Change
rust	minor	`1.85.1` -> `1.86.0`

MR created with the help of el-capitano/tools/renovate-bot.

Proposed changes to behavior should be submitted there as MRs.

Release Notes

rust-lang/rust (rust)

`v1.86.0`

Compare Source

==========================

Language

Stabilize upcasting trait objects to supertraits.
Allow safe functions to be marked with the #[target_feature] attribute.
The missing_abi lint now warns-by-default.
Rust now lints about double negations, to catch cases that might have intended to be a prefix decrement operator (--x) as written in other languages. This was previously a clippy lint, clippy::double_neg, and is now available directly in Rust as double_negations.
More pointers are now detected as definitely not-null based on their alignment in const eval.
Empty repr() attribute applied to invalid items are now correctly rejected.
Inner attributes #![test] and #![rustfmt::skip] are no longer accepted in more places than intended.

Compiler

Platform Support

Replace i686-unknown-redox target with i586-unknown-redox.
Increase baseline CPU of i686-unknown-hurd-gnu to Pentium 4.
New tier 3 targets:
- {aarch64-unknown,x86_64-pc}-nto-qnx710_iosock. For supporting Neutrino QNX 7.1 with io-socket network stack.
- {aarch64-unknown,x86_64-pc}-nto-qnx800. For supporting Neutrino QNX 8.0 (no_std-only).
- {x86_64,i686}-win7-windows-gnu. Intended for backwards compatibility with Windows 7. {x86_64,i686}-win7-windows-msvc are the Windows MSVC counterparts that already exist as Tier 3 targets.
- amdgcn-amd-amdhsa.
- x86_64-pc-cygwin.
- {mips,mipsel}-mti-none-elf. Initial bare-metal support.
- m68k-unknown-none-elf.
- armv7a-nuttx-{eabi,eabihf}, aarch64-unknown-nuttx, and thumbv7a-nuttx-{eabi,eabihf}.

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

Libraries

The type of FromBytesWithNulError in CStr::from_bytes_with_nul(bytes: &[u8]) -> Result<&Self, FromBytesWithNulError> was changed from an opaque struct to an enum, allowing users to examine why the conversion failed.
Remove RustcDecodable and RustcEncodable.
Deprecate libtest's --logfile option.
On recent versions of Windows, std::fs::remove_file will now remove read-only files.

Stabilized APIs

These APIs are now stable in const contexts:

Cargo

When merging, replace rather than combine configuration keys that refer to a program path and its arguments.
Error if both --package and --workspace are passed but the requested package is missing. This was previously silently ignored, which was considered a bug since missing packages should be reported.
Deprecate the token argument in cargo login to avoid shell history leaks.
Simplify the implementation of SourceID comparisons. This may potentially change behavior if the canonicalized URL compares differently in alternative registries.

Rustdoc

Add a sans-serif font setting.

Compatibility Notes

The wasm_c_abi future compatibility warning is now a hard error. Users of wasm-bindgen should upgrade to at least version 0.2.89, otherwise compilation will fail.
Remove long-deprecated no-op attributes #![no_start] and #![crate_id].
The future incompatibility lint cenum_impl_drop_cast has been made into a hard error. This means it is now an error to cast a field-less enum to an integer if the enum implements Drop.
SSE2 is now required for "i686" 32-bit x86 hard-float targets; disabling it causes a warning that will become a hard error eventually. To compile for pre-SSE2 32-bit x86, use a "i586" target instead.

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.

Build the rustc on AArch64 Linux with ThinLTO + PGO. The ARM 64-bit compiler (AArch64) on Linux is now optimized with ThinLTO and PGO, similar to the optimizations we have already performed for the x86-64 compiler on Linux. This should make it up to 30% faster.

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this MR and you won't be reminded about this update again.

If you want to rebase/retry this MR, check this box

This MR has been generated by Renovate Bot.

netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request

Jun 16, 2025

Pkgsrc changes:

Drop support for building now old 1.76.0 rust natively on 32-bit NetBSD arm ports, pushing those to use the rust-bin variant instead.
Use of newer GCC on NetBSD/powerpc turned out to not be required, given that your kernel and user-land is new enough. >= 10.0 release?
Checksum updates.

Upstream changes:

Version 1.86.0 (2025-04-03)

Language

[Stabilize upcasting trait objects to supertraits.] (rust-lang/rust#134367)
[Allow safe functions to be marked with the #[target_feature] attribute.] (rust-lang/rust#134090)
[The missing_abi lint now warns-by-default.] (rust-lang/rust#132397)
Rust now lints about double negations, to catch cases that might have intended to be a prefix decrement operator (--x) as written in other languages. This was previously a clippy lint, clippy::double_neg, and is [now available directly in Rust as double_negations.] (rust-lang/rust#126604)
[More pointers are now detected as definitely not-null based on their alignment in const eval.] (rust-lang/rust#133700)
[Empty repr() attribute applied to invalid items are now correctly rejected.] (rust-lang/rust#133925)
[Inner attributes #![test] and #![rustfmt::skip] are no longer accepted in more places than intended.] (rust-lang/rust#134276)

Compiler

[Debug-assert that raw pointers are non-null on access.] (rust-lang/rust#134424)
[Change -O to mean -C opt-level=3 instead of -C opt-level=2 to match Cargo's defaults.] (rust-lang/rust#135439)
[Fix emission of overflowing_literals under certain macro environments.] (rust-lang/rust#136393)

Platform Support

[Replace i686-unknown-redox target with i586-unknown-redox.] (rust-lang/rust#136698)
[Increase baseline CPU of i686-unknown-hurd-gnu to Pentium 4.] (rust-lang/rust#136700)
New tier 3 targets:
- [{aarch64-unknown,x86_64-pc}-nto-qnx710_iosock] (rust-lang/rust#133631). For supporting Neutrino QNX 7.1 with io-socket network stack.
- [{aarch64-unknown,x86_64-pc}-nto-qnx800] (rust-lang/rust#133631). For supporting Neutrino QNX 8.0 (no_std-only).
- [{x86_64,i686}-win7-windows-gnu] (rust-lang/rust#134609). Intended for backwards compatibility with Windows 7. {x86_64,i686}-win7-windows-msvc are the Windows MSVC counterparts that already exist as Tier 3 targets.
- amdgcn-amd-amdhsa.
- x86_64-pc-cygwin.
- [{mips,mipsel}-mti-none-elf] (rust-lang/rust#135074). Initial bare-metal support.
- m68k-unknown-none-elf.
- [armv7a-nuttx-{eabi,eabihf}, aarch64-unknown-nuttx, and thumbv7a-nuttx-{eabi,eabihf}] (rust-lang/rust#135757).

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

Libraries

The type of FromBytesWithNulError in CStr::from_bytes_with_nul(bytes: &[u8]) -> Result<&Self, FromBytesWithNulError> was [changed from an opaque struct to an enum] (rust-lang/rust#134143), allowing users to examine why the conversion failed.
[Remove RustcDecodable and RustcEncodable.] (rust-lang/rust#134272)
[Deprecate libtest's --logfile option.] (rust-lang/rust#134283)
[On recent versions of Windows, std::fs::remove_file will now remove read-only files.] (rust-lang/rust#134679)

Stabilized APIs

[{float}::next_down] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.next_down)
[{float}::next_up] (https://doc.rust-lang.org/stable/std/primitive.f64.html#method.next_up)
[<[_]>::get_disjoint_mut] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.get_disjoint_mut)
[<[_]>::get_disjoint_unchecked_mut] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.get_disjoint_unchecked_mut)
[slice::GetDisjointMutError] (https://doc.rust-lang.org/stable/std/slice/enum.GetDisjointMutError.html)
[HashMap::get_disjoint_mut] (https://doc.rust-lang.org/std/collections/hash_map/struct.HashMap.html#method.get_disjoint_mut)
[HashMap::get_disjoint_unchecked_mut] (https://doc.rust-lang.org/std/collections/hash_map/struct.HashMap.html#method.get_disjoint_unchecked_mut)
[NonZero::count_ones] (https://doc.rust-lang.org/stable/std/num/struct.NonZero.html#method.count_ones)
[Vec::pop_if] (https://doc.rust-lang.org/std/vec/struct.Vec.html#method.pop_if)
[sync::Once::wait] (https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.wait)
[sync::Once::wait_force] (https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.wait_force)
[sync::OnceLock::wait] (https://doc.rust-lang.org/stable/std/sync/struct.OnceLock.html#method.wait)

These APIs are now stable in const contexts:

[hint::black_box] (https://doc.rust-lang.org/stable/std/hint/fn.black_box.html)
[io::Cursor::get_mut] (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.get_mut)
[io::Cursor::set_position] (https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.set_position)
[str::is_char_boundary] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.is_char_boundary)
[str::split_at] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at)
[str::split_at_checked] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_checked)
[str::split_at_mut] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_mut)
[str::split_at_mut_checked] (https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_at_mut_checked)

Cargo

[When merging, replace rather than combine configuration keys that refer to a program path and its arguments.] (rust-lang/cargo#15066)
[Error if both --package and --workspace are passed but the requested package is missing.] (rust-lang/cargo#15071) This was previously silently ignored, which was considered a bug since missing packages should be reported.
[Deprecate the token argument in cargo login to avoid shell history leaks.] (rust-lang/cargo#15057)
[Simplify the implementation of SourceID comparisons.] (rust-lang/cargo#14980) This may potentially change behavior if the canonicalized URL compares differently in alternative registries.

Rustdoc

[Add a sans-serif font setting.] (rust-lang/rust#133636)

Compatibility Notes

[The wasm_c_abi future compatibility warning is now a hard error.] (rust-lang/rust#133951) Users of wasm-bindgen should upgrade to at least version 0.2.89, otherwise compilation will fail.
[Remove long-deprecated no-op attributes #![no_start] and #![crate_id].] (rust-lang/rust#134300)
[The future incompatibility lint cenum_impl_drop_cast has been made into a hard error.] (rust-lang/rust#135964) This means it is now an error to cast a field-less enum to an integer if the enum implements Drop.
[SSE2 is now required for "i686" 32-bit x86 hard-float targets; disabling it causes a warning that will become a hard error eventually.] (rust-lang/rust#137037) To compile for pre-SSE2 32-bit x86, use a "i586" target instead.

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.

[Build the rustc on AArch64 Linux with ThinLTO + PGO.] (rust-lang/rust#133807) The ARM 64-bit compiler (AArch64) on Linux is now optimized with ThinLTO and PGO, similar to the optimizations we have already performed for the x86-64 compiler on Linux. This should make it up to 30% faster.

Labels

merged-by-bors

This PR was explicitly merged by bors.

relnotes

Marks issues that should be documented in the release notes of the next release.

S-waiting-on-bors

Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

T-compiler

Relevant to the compiler team, which will review and decide on the PR/issue.