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Stabilize s390x <code>vector</code> target feature and <code>is_s390x_feature_detected!</code> macro

disposition-mergeThis issue / PR is in PFCP or FCP with a disposition to merge it.This issue / PR is in PFCP or FCP with a disposition to merge it.

I-lang-nominatedNominated for discussion during a lang team meeting.Nominated for discussion during a lang team meeting.

I-lang-radarItems that are on lang's radar and will need eventual work or consideration.Items that are on lang's radar and will need eventual work or consideration.

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

P-lang-drag-1Lang team prioritization drag level 1. https://rust-lang.zulipchat.com/#narrow/channel/410516-t-langLang team prioritization drag level 1. https://rust-lang.zulipchat.com/#narrow/channel/410516-t-lang

proposed-final-comment-periodProposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off.Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off.

S-waiting-on-reviewStatus: Awaiting review from the assignee but also interested parties.Status: Awaiting review from the assignee but also interested parties.

T-langRelevant to the language teamRelevant to the language team

T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.

Status: Open (in progress).

rust-lang/rustnumber 145656

#145656 In rust-lang/rust;

· folkertdev opened on Aug 20, 2025

Tracking Issue for <code>stdarch_s390x</code>

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.

Status: Open.

#135681 In rust-lang/rust;

· folkertdev opened on Jan 18, 2025

Tracking Issue for <code>stdarch_s390x_feature_detection</code>

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.

Status: Open.

#135413 In rust-lang/rust;

· folkertdev opened on Jan 12, 2025

s390x vector facilities support

A-ABIArea: Concerning the application binary interface (ABI)Area: Concerning the application binary interface (ABI)

A-inline-assemblyArea: Inline assembly (`asm!(…)`)Area: Inline assembly (`asm!(…)`)

A-SIMDArea: SIMD (Single Instruction Multiple Data)Area: SIMD (Single Instruction Multiple Data)

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

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

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#130869 In rust-lang/rust;

· taiki-e opened on Sep 26, 2024

No rust-std support for s390x-unknown-linux-musl

O-muslTarget: The musl libcTarget: The musl libc

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

Status: Open.

#103577 In rust-lang/rust;

· uweigand opened on Oct 26, 2022

1.53.0 broke ui/consts/const-eval/ub-*.rs tests on s390x (big-endian, 64-bit) (regression)

C-bugCategory: This is a bug.Category: This is a bug.

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

P-mediumMedium priorityMedium priority

regression-from-stable-to-stablePerformance or correctness regression from one stable version to another.Performance or correctness regression from one stable version to another.

Status: Open.

#89577 In rust-lang/rust;

· infinity0 opened on Oct 5, 2021

Lint against treating <code>c_char</code> as <code>i8</code> or <code>u8</code>, for portability

A-FFIArea: Foreign function interface (FFI)Area: Foreign function interface (FFI)

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.

E-hardCall for participation: Hard difficulty. Experience needed to fix: A lot.Call for participation: Hard difficulty. Experience needed to fix: A lot.

E-needs-designThis issue needs exploration and design to see how and if we can fix/implement itThis issue needs exploration and design to see how and if we can fix/implement it

O-androidOperating system: AndroidOperating system: Android

O-ArmTarget: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 stateTarget: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 state

O-PowerPCTarget: PowerPC processorsTarget: PowerPC processors

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

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

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#79089 In rust-lang/rust;

· joshtriplett opened on Nov 16, 2020

debuginfo function-call test fails on big endian

A-debuginfoArea: Debugging information in compiled programs (DWARF, PDB, etc.)Area: Debugging information in compiled programs (DWARF, PDB, etc.)

A-testsuiteArea: The testsuite used to check the correctness of rustcArea: The testsuite used to check the correctness of rustc

C-bugCategory: This is a bug.Category: This is a bug.

O-PowerPCTarget: PowerPC processorsTarget: PowerPC processors

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

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

Status: Open.

#74884 In rust-lang/rust;

· infinity0 opened on Jul 28, 2020

1.27.1 many tests fail on s390x

C-bugCategory: This is a bug.Category: This is a bug.

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

Status: Open.

#52491 In rust-lang/rust;

· infinity0 opened on Jul 18, 2018

right shift of i128i by zero fails on s390x (SystemZ)

C-bugCategory: This is a bug.Category: This is a bug.

O-SPARCTarget: SPARC processorsTarget: SPARC processors

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

Status: Open.

#52015 In rust-lang/rust;

· gnzlbg opened on Jul 3, 2018

s390x intrinsic has incorrect return type - stdsimd cross-link

O-SystemZTarget: SystemZ processors (s390x)Target: SystemZ processors (s390x)

Status: Open.

#51812 In rust-lang/rust;

· gnzlbg opened on Jun 26, 2018