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Draft release notes for 1.87
#140133 opened Apr 21, 2025 by BoxyUwU
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Issues list

Need comprehensive story for target_feature compat A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. E-needs-design This issue needs exploration and design to see how and if we can fix/implement it T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140570 opened May 2, 2025 by workingjubilee
1
Exception handling instructions emitted on wasm even when exception-handling feature is disabled A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. F-c_unwind `#![feature(c_unwind)]` O-wasm Target: WASM (WebAssembly), http://webassembly.org/ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140293 opened Apr 25, 2025 by bjorn3
2
Tracking issue for release notes of #135015: Partially stabilize LoongArch target features A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. O-loongarch Target: LoongArch (LA32R, LA32S, LA64) relnotes Marks issues that should be documented in the release notes of the next release. relnotes-tracking-issue Marks issues tracking what text to put in release notes. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#139929 opened Apr 16, 2025 by rustbot
Add the AVX10 target features A-SIMD Area: SIMD (Single Instruction Multiple Data) A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. O-x86_32 Target: x86 processors, 32 bit (like i686-*) (IA-32) O-x86_64 Target: x86-64 processors (like x86_64-*) (also known as amd64 and x64) 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.
#139675 opened Apr 11, 2025 by sayantn Loading…
@Amanieu
11
Tracking Issue for APX target feature A-inline-assembly Area: Inline assembly (`asm!(…)`) A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC O-x86_64 Target: x86-64 processors (like x86_64-*) (also known as amd64 and x64) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139284 opened Apr 2, 2025 by sayantn
3 tasks
3
Intrinsics wrappers not being inlined A-codegen Area: Code generation A-intrinsics Area: Intrinsics A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-optimization Category: An issue highlighting optimization opportunities or PRs implementing such I-slow Issue: Problems and improvements with respect to performance of generated code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139160 opened Mar 31, 2025 by mxple
4
is_riscv_feature_detected doesn't seem to actually detect anything at runtime A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. O-riscv Target: RISC-V architecture T-libs Relevant to the library team, which will review and decide on the PR/issue.
#139139 opened Mar 30, 2025 by ThomasHabets
1
@taiki-e
4
pclmulqdq intrinsics don't inline well across target_feature changes anymore A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. I-prioritize Issue: Indicates that prioritization has been requested for this issue. I-slow Issue: Problems and improvements with respect to performance of generated code. O-x86_64 Target: x86-64 processors (like x86_64-*) (also known as amd64 and x64) regression-from-stable-to-nightly Performance or correctness regression from stable to nightly. S-has-bisection Status: a bisection has been found for this issue T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139029 opened Mar 27, 2025 by iximeow
8
PowerPC SPE targets don't have spe target feature enabled A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. O-PowerPC Target: PowerPC processors T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138960 opened Mar 26, 2025 by beetrees
3
Tracking Issue for AVX10 target features A-SIMD Area: SIMD (Single Instruction Multiple Data) A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC O-x86_32 Target: x86 processors, 32 bit (like i686-*) (IA-32) O-x86_64 Target: x86-64 processors (like x86_64-*) (also known as amd64 and x64) T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#138843 opened Mar 22, 2025 by sayantn
RISC-V RVV not enabled despite -Ctarget-cpu=native A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. O-riscv Target: RISC-V architecture T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138789 opened Mar 21, 2025 by ThomasHabets
6
add nvptx_target_feature A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. O-NVPTX Target: the NVPTX LLVM backend for running rust on GPUs, https://llvm.org/docs/NVPTXUsage.html 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. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#138689 opened Mar 19, 2025 by jedbrown Loading…
@wesleywiser
27
Tracking Issue for naked_functions_target_feature A-attributes Area: Attributes (`#[…]`, `#![…]`) A-naked Area: `#[naked]`, prologue and epilogue-free, functions, https://git.io/vAzzS A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC F-naked_functions_target_feature `#![feature(naked_functions_target_feature)]` F-naked_functions `#![feature(naked_functions)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#138568 opened Mar 16, 2025 by folkertdev
4 tasks
1
unreachable pub item from portable-simd with target_feature = "avx512f" A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. P-low Low priority PG-portable-simd Project group: Portable SIMD (https://github.com/rust-lang/project-portable-simd) regression-from-stable-to-beta Performance or correctness regression from stable to beta. T-libs Relevant to the library team, which will review and decide on the PR/issue.
#138054 opened Mar 5, 2025 by 12101111
8
Inefficient code generation with target-feature AVX2 A-codegen Area: Code generation A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. I-slow Issue: Problems and improvements with respect to performance of generated code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#137335 opened Feb 20, 2025 by LaurenzV
5
LLVM warnings emitted for Xtensa target-cpu A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. O-xtensa T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#137150 opened Feb 16, 2025 by Noratrieb
@MabezDev
1
x86_64-unknown-linux-musl with -Ctarget-feature=-crt-static links to glibc A-linkage Area: linking into static, shared libraries and binaries A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. O-linux Operating system: Linux O-musl Target: The musl libc T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#135244 opened Jan 8, 2025 by LunarLambda
30
Partially stabilize LoongArch target features A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. disposition-merge This issue / PR is in PFCP or FCP with a disposition to merge it. final-comment-period In the final comment period and will be merged soon unless new substantive objections are raised. I-lang-radar Items that are on lang's radar and will need eventual work or consideration. O-loongarch Target: LoongArch (LA32R, LA32S, LA64) relnotes Marks issues that should be documented in the release notes of the next release. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#135015 opened Jan 2, 2025 by heiher Loading…
@joshtriplett
32
Target feature implications for negative features are handled inconsistently between codegen and cfg(target_feature) A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134792 opened Dec 26, 2024 by RalfJung
1
Compile Error on AVR atmega328p with global_asm! in lib.rs A-inline-assembly Area: Inline assembly (`asm!(…)`) A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. C-external-bug Category: issue that is caused by bugs in software beyond our control E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example O-AVR Target: AVR processors (ATtiny, ATmega, etc.) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134758 opened Dec 25, 2024 by xjnxjnxjn
13
aarch64-unknown-none-softfloat: ABI unsoundness when enabling "neon" feature A-ABI Area: Concerning the application binary interface (ABI) A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. I-prioritize Issue: Indicates that prioritization has been requested for this issue. I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness O-AArch64 Armv8-A or later processors in AArch64 mode T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134375 opened Dec 16, 2024 by RalfJung
1
32
Tracking Issue for m68k_target_feature A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC O-motorola68k Target: Rust from the parallel universe where the Amiga won.
#134328 opened Dec 15, 2024 by taiki-e
2 tasks
"rustc-LLVM ERROR" when using _mm_cvttps_epi32 on x86_64-unknown-none A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-bug Category: This is a bug. O-x86_64 Target: x86-64 processors (like x86_64-*) (also known as amd64 and x64) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133707 opened Dec 1, 2024 by eduardosm
2
Tracking Issue for sparc_target_feature A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC O-SPARC Target: SPARC processors
#132783 opened Nov 8, 2024 by taiki-e
1 of 4 tasks
Tracking issue for all the ways in which -C compiler flags can alter the ABI A-ABI Area: Concerning the application binary interface (ABI) A-target-feature Area: Enabling/disabling target features like AVX, Neon, etc. C-tracking-issue Category: An issue tracking the progress of sth. like the implementation of an RFC T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#131837 opened Oct 17, 2024 by RalfJung
ProTip! Find all open issues with in progress development work with linked:pr.