Language-Internals on Tenu Tech Brief

How to use offline index file generated by clangd-indexer in vscode?

Thu, 26 Feb 2026 07:40:09 +0000

• How to use offline index file generated by clangd-indexer in vscode • I experimented with using offline index and generated index files using clangd-indexer:clangd-indexer –exec

Tsan support for mach sempaphores

Wed, 25 Feb 2026 20:45:49 +0000

• Tsan support for mach sempaphores Hi, I just got bit byTSan does not support mach semaphores (on macOS) · Issue #1384 · google/sanitizers · GitHubfor the umpteenth time and wante

CANCELLED RISC-V LLVM sync-up call February 26th 2026

Wed, 25 Feb 2026 20:39:31 +0000

• LLVM Discussion Forums CANCELLED RISC-V LLVM sync-up call February 26th 2026 Code Generation RISCV asb February 25, 2026, 8:39pm 1 We’ll skip tomorrow’s meeting due to lack of ag

Require Pull Requests for all CIRCT commits

Wed, 25 Feb 2026 19:34:42 +0000

• Require Pull Requests for all CIRCT commits As discussed in the ODM today, we are going to follow LLVM’s policy of requiring GitHub pull requests for all commits to themainbranch

[GSoC 2026] [MLIR] Interest in MLIR Sparsifier for GSoC

Wed, 25 Feb 2026 17:27:33 +0000

• [GSoC 2026] [MLIR] Interest in MLIR Sparsifier for GSoC Hello@aartbik, I have been studying your paper ‘Compiler Support for Sparse Tensor Computations in MLIR’ and the current d

RFC: Removing the 'Require Pull Request' bypass

Wed, 25 Feb 2026 17:01:32 +0000

• RFC: Removing the ‘Require Pull Request’ bypass This is a follow up toRFC: Require Pull Requests for all llvm-project commits • Following the Project Council decision, we have en

Bazel bots should not make tests red

Wed, 25 Feb 2026 16:11:30 +0000

• This PR has its tests ‘red’ because of a Bazel failure • As we all know, Bazel is a peripheral tier of support and should not impede general progress • I know we don’t block merg

Location of OpenMP meeting minutes

Wed, 25 Feb 2026 16:05:01 +0000

• Location of OpenMP meeting minutes As discussed in today’s meeting, we will move the minutes from past meetings to a repo within the llvm organization • The agenda for the upcomi

RFC Builtin dialect bytecode versioning

Wed, 25 Feb 2026 09:57:26 +0000

• RFC: Stabilize MLIR Builtin Bytecode Serialization Overview This document outlines the proposal for stabilizing the MLIR Builtin dialect’s Attribute and Type bytecode encoding. •

About inline asm instruction order

Wed, 25 Feb 2026 09:33:33 +0000

• I wonder if there is a method to preserve the order of instructions from inline assembly relative to other statements. • According to Extended Asm (Using the GNU Compiler Collect

[RFC][DebugInfo][DWARF] Thread-safety approach for libDebugInfoDWARF DWARFUnit DIE extraction

Wed, 25 Feb 2026 08:09:38 +0000

• Hi all, I’m working on fixing a data race in DWARFContext::getLineInfoForAddress ( Multithreading issue with DWARFContext::getLineInfoForAddress · Issue #167285 · llvm/llvm-pro

Approaches to the inliner blowing up

Tue, 24 Feb 2026 22:55:55 +0000

• Approaches to the inliner blowing up There has been discussion throughout time about the inliner blowing up (e.g.[Inline] Unbounded inlining due to locally hot call sites · Issue

Customize the RiscV ASM generation

Tue, 24 Feb 2026 22:51:55 +0000

• Customize the RiscV ASM generation I am interested in emit customized RiscV asm instructions to support some customized instructions and data section items. • After some research

[RFC] plan for eliminating `AllocaInst->getAllocatedType`, leaving only `getArraySize`

Tue, 24 Feb 2026 22:13:37 +0000

• Since the removal of typed pointers, there has been increasingly little meaning to the alloca element type, and some passes that cannot accurately preserve this element type at a

Getting started with understanding LLVM internals

Tue, 24 Feb 2026 21:41:45 +0000

• Getting started with understanding LLVM internals Hello everyone, I am currently studying LLVM and would appreciate guidance on how to build a structured understanding of its int

GSoC 2026: projects, proposals and other information

Tue, 24 Feb 2026 20:34:36 +0000

• GSoC 2026: projects, proposals and other information Welcome prospective GSoC 2026 participants! • This post aims to provide some guidance about the program in 2026. • Projects P

Status on enabling GlobalIsel by default on clang (on aarch64)?

Tue, 24 Feb 2026 18:12:50 +0000

• Status on enabling GlobalIsel by default on clang (on aarch64)? • I see that⚙ D137269 [Clang][AArch64][Darwin] Enable GlobalISel by default for Darwin ARM64 platforms.attempted t

[GSoC 2026] Add Fortran Debugging Support in LLDB

Tue, 24 Feb 2026 17:37:09 +0000

• [GSoC 2026] Add Fortran Debugging Support in LLDB Description: Fortran remains widely used in HPC, scientific computing, and numerical simulation. • However, LLDB currently provi

Black Formatter Version 23.x Faces CVE-2024-21503

Tue, 24 Feb 2026 12:39:42 +0000

• LLVM recommends using Black 23.x for Python code formatting. • Black 23.x faces CVE-2024-21503, a regex denial-of-service vulnerability. • The vulnerability could trigger excessi

MLIR ExecutionContext vs custom action handler infrastructure

Tue, 24 Feb 2026 11:03:29 +0000

• MLIR ExecutionContext vs custom action handler infrastructure Hi, I have recently rediscoveredAction: Tracing and Debugging MLIR-based Compilers - MLIRand wanted to use it within

MLIR support for Neuromorphic workflows

Tue, 24 Feb 2026 10:54:58 +0000

• MLIR support for Neuromorphic workflows Hi all, I´m an electronics engineer working on SNNs (Spiking Neural Networks) on the edge for the last years. • Seems that right now the N

TVM + LLVM flow for custom NPU: Where should the Conv2d tiling and memory management logic reside?

Tue, 24 Feb 2026 10:48:23 +0000

• Hi everyone, I’m a junior compiler engineer recently working on a backend for a custom NPU. • I’m looking for some architectural advice regarding the split of responsibilities be

LLVM 22.1.0 Released!

Tue, 24 Feb 2026 09:03:10 +0000

• LLVM 22.1.0 Released! • We are happy to announce that LLVM 22.1.0 is now released! • This includes the main LLVM project, and its subprojects including clang, lld, libc++, and ML

tiny-gpu-compiler: An educational MLIR-based compiler targeting open-source GPU hardware

Tue, 24 Feb 2026 06:01:49 +0000

• Tiny-gpu-compiler: An educational MLIR-based compiler targeting open-source GPU hardware I built an open-source compiler that uses MLIR to compile a C-like GPU kernellanguage dow

How to get correct TypeLoc SourceLocation for parameters in explicit template instantiation?

Tue, 24 Feb 2026 02:05:21 +0000

• Hi, I’m trying to get the SourceLocation of a type reference inside an explicit template instantiation declaration, for example: struct Foo {}; template void func(const Foo &) {}

Swift at Apple: Migrating the Password Monitoring service from Java

Tue, 24 Feb 2026 00:37:49 +0000

• Swift at Apple: Migrating the Password Monitoring service from Java Swift is heavily used in production for building cloud services at Apple, with incredible results. • Last year

Redesigned Swift.org is now live

Tue, 24 Feb 2026 00:37:47 +0000

• Redesigned Swift.org is now live Over the past few months, the website workgroup has been redesigning Swift.org. • On behalf of the website workgroup, I’m pleased to announce tha

Swift 6.2 Released

Tue, 24 Feb 2026 00:37:45 +0000

• Swift 6.2 Released We’re excited to announce Swift 6.2, a release aimed at making every Swift developer more productive, regardless of where or how you write code. • From improve

The Growth of the Swift Server Ecosystem

Tue, 24 Feb 2026 00:37:44 +0000

• The Growth of the Swift Server Ecosystem Nearly ten years ago, Swift was open sourced and an official runtime for Linux was released. • I’ve been involved with Swift on the serve

Introducing Swift Profile Recorder: Identifying Performance Bottlenecks in Production

Tue, 24 Feb 2026 00:37:43 +0000

• Introducing Swift Profile Recorder: Identifying Performance Bottlenecks in Production Swift Profile Recorder, an in-process sampling profiler for Swift services, is now available

Announcing the Swift SDK for Android

Tue, 24 Feb 2026 00:37:41 +0000

• Announcing the Swift SDK for Android Swift has matured significantly over the past decade - extending from cloud services to Windows applications, browser apps, and microcontroll

What's new in Swift: October 2025 Edition

Tue, 24 Feb 2026 00:37:40 +0000

• What’s new in Swift: October 2025 Edition Editor Note: This is the first of a new series, What’s new in Swift, a regular digest featuring what’s new in the Swift project and ecos

GSoC 2025 Showcase: Swiftly support in VS Code

Tue, 24 Feb 2026 00:37:39 +0000

• GSoC 2025 Showcase: Swiftly support in VS Code Another successful year of Swift participation in Google Summer of Code recently came to an end, and we’d like to shine some light

GSoC 2025 Showcase: Extending Swift-Java Interoperability

Tue, 24 Feb 2026 00:37:37 +0000

• GSoC 2025 Showcase: Extending Swift-Java Interoperability This is the second post in our series showcasing the Swift community’s participation in Google Summer of Code 2025. • Le

Introducing Temporal Swift SDK: Building durable and reliable workflows

Tue, 24 Feb 2026 00:37:36 +0000

• Introducing Temporal Swift SDK: Building durable and reliable workflows The Temporal Swift SDK is now available as an open source project. • Building reliable distributed systems

GSoC 2025 Showcase: Improved Code completion for Swift

Tue, 24 Feb 2026 00:37:35 +0000

• GSoC 2025 Showcase: Improved Code completion for Swift Our blog post series showcasing the Swift community’s participation inGoogle Summer of Code2025 continues with our third up

GSoC 2025 Showcase: Improved Console Output for Swift Testing

Tue, 24 Feb 2026 00:37:34 +0000

• GSoC 2025 Showcase: Improved Console Output for Swift Testing The Swift community participated in Google Summer of Code 2025, and we’ve recently been showcasing all of the projec

Embedded Swift Improvements Coming in Swift 6.3

Tue, 24 Feb 2026 00:37:32 +0000

• Embedded Swift Improvements Coming in Swift 6.3 Embedded Swift is a subset of Swift that’s designed for low resource usage, making it capable of running on constrained environmen

Swift Configuration 1.0 released

Tue, 24 Feb 2026 00:37:31 +0000

• Swift Configuration 1.0 released Every application has configuration: in environment variables, configuration files, values from remote services, command-line flags, or repositor

Exploring the Swift SDK for Android

Tue, 24 Feb 2026 00:37:29 +0000

• Exploring the Swift SDK for Android Since the announcement of the preview Swift SDK for Android, the Android workgroup has seen a lot of interest in how it works and what’s next.

What's new in Swift: December 2025 Edition

Tue, 24 Feb 2026 00:37:28 +0000

• What’s new in Swift: December 2025 Edition Welcome to the latest digest of news from the Swift project. • Each edition, we share updates that we hope will be useful to you whethe

Improving the usability of C libraries in Swift

Tue, 24 Feb 2026 00:37:26 +0000

• Improving the usability of C libraries in Swift There are many interesting, useful, and fun C libraries in the software ecosystem. • While one could go and rewrite these librarie

Announcing the Windows Workgroup

Tue, 24 Feb 2026 00:37:24 +0000

• Announcing the Windows Workgroup We are excited to announce the creation of theWindows workgroup! • The primary goal is to ensure ongoing support for Swift on Windows, enabling u

What's new in Swift: January 2026 Edition

Tue, 24 Feb 2026 00:37:23 +0000

• What’s new in Swift: January 2026 Edition A Reddit thread earlier this month asked about building web apps with Swift. • For this edition of ‘What’s new in Swift,’ we invited a d

Announcing Swift System Metrics 1.0: Process-Level Monitoring

Tue, 24 Feb 2026 00:37:21 +0000

• Announcing Swift System Metrics 1.0: Process-Level Monitoring We are excited to announce the 1.0 release of Swift System Metrics, a Swift package that collects process-level syst

Question about RiscVAsmPrinter

Mon, 23 Feb 2026 22:17:11 +0000

• Question about RiscVAsmPrinter When I check the RiscVAsmPrinter.cpp, i found the RiscVAsmPrinter is in an anouymous namespace and it does not have .h file. • This setup is differ

LLVM Weekly - #634, February 23rd 2026

Mon, 23 Feb 2026 20:37:02 +0000

• LLVM Weekly - #634, February 23rd 2026 LLVM Weekly -#634, February 23rd 2026 If you prefer, you can read the canonical version of this issue athttps://llvmweekly.org/issue/634. •

🗓️ WiCT Meetup - Saturday, March 14, 2026: Compiler Optimizations for CPU-GPU Heterogeneous Systems

Mon, 23 Feb 2026 18:06:47 +0000

• 🗓️ WiCT Meetup - Saturday, March 14, 2026: Compiler Optimizations for CPU-GPU Heterogeneous Systems WiCT Meetup - Saturday, March 14, 2026: Compiler Optimizations for CPU-GPU Het

Simplification of switches

Mon, 23 Feb 2026 17:31:23 +0000

• Hello everyone, I am using LLVM 16 to optimize my code, but I don’t find a sequence of passes to simplify this code. • target datalayout = ’e-m:e-p:32:32-p270:32:32-p271:32:32-p2

[GSoC 2026] POC for the idea 'Enable float80 and float128 math support on unsupported targets for LLVM libc'

Mon, 23 Feb 2026 16:38:41 +0000

• [GSoC 2026] POC for the idea ‘Enable float80 and float128 math support on unsupported targets for LLVM libc’ Hi everyone, To wrap my head around theEnable float80 and float128 ma

LLVM Embedded Toolchains Working Group call this Thursday, Feb 26

Mon, 23 Feb 2026 15:30:06 +0000

• LLVM Embedded Toolchains Working Group call this Thursday, Feb 26 Hello, This is to confirm theLLVM Embedded Toolchains Working Group sync upthis week. • Agenda: Reviews and RFCs

[Flang][Affine] Linearized array access in -promote-to-affine causes false dependence and blocks loop tiling

Mon, 23 Feb 2026 14:43:35 +0000

• Hi, I’ve been investigating the -promote-to-affine pass in flang (AffinePromotion.cpp) and its interaction with downstream MLIR affine loop optimization (specifically -affine-loo

Reviewer Coverage for LLDB RISC-V PRs

Mon, 23 Feb 2026 11:52:41 +0000

• Reviewer Coverage for LLDB RISC-V PRs First I need to make folks aware that while I was previously assigned to Linaro, I am now back at Arm. • To you in the community that is jus

Reviewer Coverage for LLDB RISC-V PRs

Mon, 23 Feb 2026 11:52:41 +0000

• Reviewer Coverage for LLDB RISC-V PRs First I need to make folks aware that while I was previously assigned to Linaro, I am now back at Arm. • To you in the community that is jus

[RFC][TableGen] Add let append/prepend syntax for field concatenation

Mon, 23 Feb 2026 11:13:03 +0000

• Motivation LLVM TableGen currently lacks a way to accumulate field values across class hierarchies. • When a derived class sets a field via let , it completely replaces the paren

Rust debugging survey 2026

Mon, 23 Feb 2026 00:00:00 +0000

• We’re launching a Rust Debugging Survey. • Various issues with debugging Rust code are often mentioned as one of the biggest challenges that annoy Rust developers. • While it is

Errors in building clangd from source

Sun, 22 Feb 2026 11:17:11 +0000

• kaddy 1 I built Clang from source a while back by following the build instructions. • I now want to install clangd . • I am trying to build it from source as well by following th

Swift at Apple: Migrating the Password Monitoring service from Java

Sun, 22 Feb 2026 00:38:07 +0000

• Swift at Apple: Migrating the Password Monitoring service from Java Swift is heavily used in production for building cloud services at Apple, with incredible results. • Last year

Redesigned Swift.org is now live

Sun, 22 Feb 2026 00:38:05 +0000

• Redesigned Swift.org is now live Over the past few months, the website workgroup has been redesigning Swift.org. • On behalf of the website workgroup, I’m pleased to announce tha

Swift 6.2 Released

Sun, 22 Feb 2026 00:38:04 +0000

• Swift 6.2 Released We’re excited to announce Swift 6.2, a release aimed at making every Swift developer more productive, regardless of where or how you write code. • From improve

The Growth of the Swift Server Ecosystem

Sun, 22 Feb 2026 00:38:03 +0000

• The Growth of the Swift Server Ecosystem Nearly ten years ago, Swift was open sourced and an official runtime for Linux was released. • I’ve been involved with Swift on the serve

Introducing Swift Profile Recorder: Identifying Performance Bottlenecks in Production

Sun, 22 Feb 2026 00:38:01 +0000

• Introducing Swift Profile Recorder: Identifying Performance Bottlenecks in Production Swift Profile Recorder, an in-process sampling profiler for Swift services, is now available

Announcing the Swift SDK for Android

Sun, 22 Feb 2026 00:38:00 +0000

• Announcing the Swift SDK for Android Swift has matured significantly over the past decade - extending from cloud services to Windows applications, browser apps, and microcontroll

What's new in Swift: October 2025 Edition

Sun, 22 Feb 2026 00:37:59 +0000

• What’s new in Swift: October 2025 Edition Editor Note: This is the first of a new series, What’s new in Swift, a regular digest featuring what’s new in the Swift project and ecos

GSoC 2025 Showcase: Swiftly support in VS Code

Sun, 22 Feb 2026 00:37:57 +0000

• GSoC 2025 Showcase: Swiftly support in VS Code Another successful year of Swift participation in Google Summer of Code recently came to an end, and we’d like to shine some light

GSoC 2025 Showcase: Extending Swift-Java Interoperability

Sun, 22 Feb 2026 00:37:56 +0000

• GSoC 2025 Showcase: Extending Swift-Java Interoperability This is the second post in our series showcasing the Swift community’s participation in Google Summer of Code 2025. • Le

Introducing Temporal Swift SDK: Building durable and reliable workflows

Sun, 22 Feb 2026 00:37:55 +0000

• Introducing Temporal Swift SDK: Building durable and reliable workflows The Temporal Swift SDK is now available as an open source project. • Building reliable distributed systems

GSoC 2025 Showcase: Improved Code completion for Swift

Sun, 22 Feb 2026 00:37:53 +0000

• GSoC 2025 Showcase: Improved Code completion for Swift Our blog post series showcasing the Swift community’s participation inGoogle Summer of Code2025 continues with our third up

GSoC 2025 Showcase: Improved Console Output for Swift Testing

Sun, 22 Feb 2026 00:37:52 +0000

• GSoC 2025 Showcase: Improved Console Output for Swift Testing The Swift community participated in Google Summer of Code 2025, and we’ve recently been showcasing all of the projec

Embedded Swift Improvements Coming in Swift 6.3

Sun, 22 Feb 2026 00:37:51 +0000

• Embedded Swift Improvements Coming in Swift 6.3 Embedded Swift is a subset of Swift that’s designed for low resource usage, making it capable of running on constrained environmen

Swift Configuration 1.0 released

Sun, 22 Feb 2026 00:37:49 +0000

• Swift Configuration 1.0 released Every application has configuration: in environment variables, configuration files, values from remote services, command-line flags, or repositor

Exploring the Swift SDK for Android

Sun, 22 Feb 2026 00:37:48 +0000

• Exploring the Swift SDK for Android Since the announcement of the preview Swift SDK for Android, the Android workgroup has seen a lot of interest in how it works and what’s next.

What's new in Swift: December 2025 Edition

Sun, 22 Feb 2026 00:37:47 +0000

• What’s new in Swift: December 2025 Edition Welcome to the latest digest of news from the Swift project. • Each edition, we share updates that we hope will be useful to you whethe

Improving the usability of C libraries in Swift

Sun, 22 Feb 2026 00:37:45 +0000

• Improving the usability of C libraries in Swift There are many interesting, useful, and fun C libraries in the software ecosystem. • While one could go and rewrite these librarie

Announcing the Windows Workgroup

Sun, 22 Feb 2026 00:37:44 +0000

• Announcing the Windows Workgroup We are excited to announce the creation of theWindows workgroup! • The primary goal is to ensure ongoing support for Swift on Windows, enabling u

What's new in Swift: January 2026 Edition

Sun, 22 Feb 2026 00:37:42 +0000

• What’s new in Swift: January 2026 Edition A Reddit thread earlier this month asked about building web apps with Swift. • For this edition of ‘What’s new in Swift,’ we invited a d

Announcing Swift System Metrics 1.0: Process-Level Monitoring

Sun, 22 Feb 2026 00:37:41 +0000

• Announcing Swift System Metrics 1.0: Process-Level Monitoring We are excited to announce the 1.0 release of Swift System Metrics, a Swift package that collects process-level syst

[RFC] Add non-blocking precommit `clang-tidy` analysis

Sat, 21 Feb 2026 23:38:02 +0000

• TL;DR Add non-blocking precommit clang-tidy analysis to LLVM’s CI on per-component basis. • Component maintainers (like mlir , clang , lldb , ..) will decide if precommit clang-t

2026 EuroLLVM - Early Bird Pricing Ends Soon - 1 Week Left

Sat, 21 Feb 2026 06:22:22 +0000

• 2026 EuroLLVM - Early Bird Pricing Ends Soon - 1 Week Left image1600×978 203 KB Early bird pricing for the 2026 EuroLLVM Developers’ Meeting ends on 1 March. • Book now for savin

Inline asm: canonicalizer does not respect `i` and `d` constraints

Sat, 21 Feb 2026 00:36:15 +0000

• Given the following LLVM MLIR dialect example (example.mlir ): llvm.func @f(%arg0: i16) { %0 = llvm.mlir.constant(64 : i16) : i16 %1 = llvm.mlir.constant(32 : i16) : i16 %5 = llv

Web 'FIR Language Reference' out of sync with FIRLangRef.md?

Fri, 20 Feb 2026 15:20:31 +0000

• Web ‘FIR Language Reference’ out of sync with FIRLangRef.md? • Hello, When I look atFIR Language Reference - The Flang Compiler, it seems different from FIRLangRef.md generated b

[RFC] Android support in LLDB-DAP VS Code extension

Fri, 20 Feb 2026 15:09:23 +0000

• [RFC] Android support in LLDB-DAP VS Code extension Introduction Thanks to the LLDB-DAP extension for VS Code, debugging software written in any language supported by LLDB is eas

MLIR Sparsifier GSOC Project

Fri, 20 Feb 2026 02:56:24 +0000

• MLIR Sparsifier GSOC Project Good day! • I was browsing MLIR’s docs and noticed that there aresome open projectssuitable for GSOC. • I am particularly interested in the MLIR spar

[RFC] Markdown support in ASTComment

Fri, 20 Feb 2026 01:20:54 +0000

• [RFC] Markdown support in ASTComment It would be great if the existing ASTComment infrastructure would be extended to support Markdown in Doxygen comments. • The existing ASTComm

Markdown support in ASTComment

Fri, 20 Feb 2026 01:20:54 +0000

• It would be great if the existing ASTComment infrastructure would be extended to support Markdown in Doxygen comments. • The existing ASTComment offers comprehensive structuring

ICYMI: Memory Safety, Ecosystem Talks, and Java Interoperability at FOSDEM 2025

Fri, 20 Feb 2026 00:37:50 +0000

• ICYMI: Memory Safety, Ecosystem Talks, and Java Interoperability at FOSDEM 2025 The Swift community had a strong presence at FOSDEM 2025, the world’s largest independently run op

[RFC] TensaLang: A tensor-first language for LLM inference, lowering through MLIR to CPU/CUDA

Thu, 19 Feb 2026 22:24:46 +0000

• Hello, I’ve been working on a project called TensaLang and it’s finally at a point worth sharing. • It’s a small language + compiler + runtime for writing LLM forward passes dire

RFC: Shorten long register/sub-register index names

Thu, 19 Feb 2026 19:55:09 +0000

• jurahul 1 GPU targets generally have to define vector registers to address N consecutive scalar registers for use in vector instructions. • These are usually defined using Regist

Running a single test - clangd

Thu, 19 Feb 2026 19:21:32 +0000

• edror12 1 Hey there, I’m new here and I’m working on this [#181554]( [clangd] Guard against null TemplateName in DumpVisitor by edror12 · Pull Request #181554 · llvm/llvm-project

[RFC] [GSOC] Buffer Reuse Pass for Non-Overlapping Allocations After lower-deallocations

Thu, 19 Feb 2026 18:29:26 +0000

• [RFC] [GSOC] Buffer Reuse Pass for Non-Overlapping Allocations After lower-deallocations Motivation & Background Many real-world workloads are expressed as structured, sequential

[PSA] Bugpoint removal

Thu, 19 Feb 2026 18:02:52 +0000

• [PSA] Bugpoint removal The time has come to remove bugpoint. • I do not think bugpoint has any reduction techniques left in it that llvm-reduce also does not have, and it’s one o

[RFC] Regarding the current status of HICPP checks

Thu, 19 Feb 2026 17:40:24 +0000

• [RFC] Regarding the current status of HICPP checks Summary The High Integrity C++ Coding Standard (HICPP) by Perforce has recently been moved behind a registration wall. • The or

Are there ABIs which restrict the caller from modifying an argument passed by reference?

Thu, 19 Feb 2026 14:49:36 +0000

• I’m researching how different ABIs work in relation to implementing tail calls in the Rust compiler. • One thing that I’m currently interested in is if there are ABIs which prohi

Nested Symbol & SymbolTable usages

Thu, 19 Feb 2026 13:46:25 +0000

• Nested Symbol & SymbolTable usages SymbolTable::getSymbolUsesdocumentationexplicitly says: This does not traverse into any nested symbol tables. • Correspondingcommitsays: this r

[ConstantFolding] Why are FP32 calls folded in double-precision?

Thu, 19 Feb 2026 13:29:21 +0000

• [ConstantFolding] Why are FP32 calls folded in double-precision? • It recently came up inMaking sure you’re not a bot!that GCC was folding pow(x, 2.0)→x * x, even when doing so c

[RFC] Add SymbolLocator for Windows PDB Symbol Servers in LLDB

Thu, 19 Feb 2026 12:25:54 +0000

• Symbol servers allow debuggers to automatically retrieve debug info for stripped binaries. • Microsoft has had their own implementation for a long time and AFAIK it’s not yet sup

Rust participates in Google Summer of Code 2026

Thu, 19 Feb 2026 00:00:00 +0000

• We are happy to announce that the Rust Project will again be participating in Google Summer of Code (GSoC) 2026, same as in the previous two years. • If you’re not eligible or in

[RFC] Enforce Rule of Three

Wed, 18 Feb 2026 21:01:00 +0000

• LLVM has many RAII classes that define destructors but omit copy constructors/assignments. • Implicit copying can cause double deletes, state corruption, and subtle bugs. • The R

Board Meeting Minutes -- Oct 3, 2025

Wed, 18 Feb 2026 18:50:08 +0000

• Board Meeting Minutes – Oct 3, 2025 Board Meeting Minutes Date: October 3, 2025 Time: 9AM pacific time Location: Video conferencing, multiple locations Attendees: Chris Bieneman

[RFC] Per-function Option Attributes

Wed, 18 Feb 2026 18:46:29 +0000

• [RFC] Per-function Option Attributes Summary This RFC proposes support for specifying per-function options via attributes. • This allows passes to query function attributes for c

PHINode logic question

Wed, 18 Feb 2026 17:18:35 +0000

• Hi, I do not understand the way clang is using PHINodes in the second example below. • Let’s consider a condition: ((i < 5) || ((j < 5) || ((k < 5) || (l < 5)))) The resulting IR

[RFC] Adding conditional expressions in Flang (F2023)

Wed, 18 Feb 2026 16:33:03 +0000

• [RFC] Adding conditional expressions in Flang (F2023) I’ve been working on adding conditional expression support to Flang, and I wanted to open a discussion before finishing up a

Which doc format to use? Inline Doxygen/rst/markdown

Wed, 18 Feb 2026 15:28:32 +0000

• I’m a bit confused that we have 3 ways of documenting this. • In particular, I want to document a somewhat complicated API - that to be used correctly - one needs to apply change

Cambridge UK Social

Wed, 18 Feb 2026 10:25:45 +0000

• Cambridge UK Social Planning for the next Cambridge LLVM Social for the next two weeks. • Will be nearby the train station. • There may be a talk (if we find a place and a propos

Windows Build Problems Related to ORC-RT

Wed, 18 Feb 2026 09:46:02 +0000

• Windows Build Problems Related to ORC-RT Let me first introduce what I was doing so far. • I am using the C# bindings based on the LLVM-C.dll. • I have build a facade to write IR

[SCEV] question about inferring nsw flags

Tue, 17 Feb 2026 21:13:29 +0000

• SCEV struggles to infer nsw flags for AddRec subscripts in conditional stores. • Example loop uses i to index array with conditions. • Current SCEV cannot deduce overflow behavio

Where to start fixing an opt-pass for MIPS1

Tue, 17 Feb 2026 20:23:45 +0000

• MIPS1 load delay slots ignored when load occurs in branch delay slot. • Issue originates in CodeGen Prepareopt pass during optimization of MIPS1 code. • Developer seeks to fix ra

Sphinx documentation stopped updating

Tue, 17 Feb 2026 19:19:02 +0000

• Sphinx documentation build halted, no updates visible for weeks. • Recent clang‑tidy docs changes (~2 weeks) not reflected in the public repository. • publish‑*-docs CI jobs unre

[Modules] Bi-Weekly Meetup Notes, Feb 17, 2026

Tue, 17 Feb 2026 17:52:45 +0000

• Michael highlights ongoing cleanup of implicit module mechanism, aiming to remove unnecessary components. • Naveen landed patch untangling dependency scanning; Ben proposes adopt

Side effects and mayLoad/mayStore in MachineIR

Tue, 17 Feb 2026 17:47:47 +0000

• MachineScheduler blocks reordering of side-effecting instructions with loads/stores via a barrier chain. • MachineSink can still sink a ds_load across a workgroup fence, raising

Warnings in GPU to NVVM pipeline

Tue, 17 Feb 2026 14:06:43 +0000

• Warnings in GPU to NVVM pipeline Hi, I’m currently in the process of trying to understand the conversion from the GPU dialect to LLVM via the NVVM dialect and GPU code-generation

Join the Python Security Response Team!

Tue, 17 Feb 2026 07:30:00 +0000

• Tuesday, February 17, 2026 Join the Python Security Response Team! • Thanks to the work of the Security Developer-in-Residence Seth Larson, the Python Security Response Team (PS

Using go fix to modernize Go code

Tue, 17 Feb 2026 00:00:00 +0000

• The Go Blog Using go fix to modernize Go code The 1.26 release of Go this month includes a completely rewritten go fix subcommand. • Go fix uses a suite of algorithms to identify

LLVM Weekly - #633, February 16th 2026

Mon, 16 Feb 2026 21:11:22 +0000

• LLVM Weekly - #633, February 16th 2026 LLVM Weekly -#633, February 16th 2026 If you prefer, you can read the canonical version of this issue athttps://llvmweekly.org/issue/633. •

Is there a way to externalize weights in torch-mlir output?

Mon, 16 Feb 2026 11:08:05 +0000

• Hi all, I started to explore the torch_mlir utilities, and try to lower to MLIR from pytorch. • As far as I can tell the only/stable way to convert pytorch models using torch_mli

Canonicalization in MLIR

Mon, 16 Feb 2026 09:09:39 +0000

• Canonicalization in MLIR There have been enough RFCs, presentations and discussions about what does it mean, in MLIR, to have a canonical form and how to converge to such forms.

[MLIR][Concept] 'Inherent Attribute' vs 'Discardable Attribute' and 'Property'

Sun, 15 Feb 2026 22:49:41 +0000

• [MLIR][Concept] ‘Inherent Attribute’ vs ‘Discardable Attribute’ and ‘Property’ Hello I was reading the documentation and became confused of the difference between inherent attrib

Generic Binary Condition Algorithm (Control Flow)

Sun, 15 Feb 2026 13:04:11 +0000

• Generic Binary Condition Algorithm (Control Flow) Hi, I am failing to implement an algorithm for a generic branching algorithm (control flow) since over 2 years now. • Even ChatG

2026 EuroLLVM - Early Bird Pricing Ends Soon

Fri, 13 Feb 2026 23:47:40 +0000

• 2026 EuroLLVM - Early Bird Pricing Ends Soon image1600×978 203 KB Early bird pricing for the 2026 EuroLLVM Developers’ Meeting ends on 1 March. • Book now for savings herehere. •

crates.io: an update to the malicious crate notification policy

Fri, 13 Feb 2026 00:00:00 +0000

• The crates.io team will no longer publish a blog post each time a malicious crate is detected or reported. • In the vast majority of cases to date, these notifications have invol

Announcing Rust 1.93.1

Thu, 12 Feb 2026 00:00:00 +0000

• The Rust team has published a new point release of Rust, 1.93.1. • Rust is a programming language that is empowering everyone to build reliable and efficient software. • If you h

Python 3.15.0 alpha 6

Wed, 11 Feb 2026 15:42:00 +0000

• Wednesday, February 11, 2026 Python 3.15.0 alpha 6 This is an early developer preview of Python 3.15 www.python.org/downloads/release/python-3150a6/ Major new features of the 3.1

Go 1.26 is released

Tue, 10 Feb 2026 00:00:00 +0000

• The Go Blog Go 1.26 is released Carlos Amedee, on behalf of the Go team10 February 2026 Today the Go team is pleased to release Go 1.26. • You can find its binary archives and in

Python 3.14.3 and 3.13.12 are now available!

Tue, 03 Feb 2026 22:08:00 +0000

• Python 3.14.3 is now available! • This is third maintenance release of Python 3.14 Python 3.14.3 is the third maintenance release of 3.14, containing around 299 bugfixes, build i

Announcing Rust 1.93.0

Thu, 22 Jan 2026 00:00:00 +0000

• The Rust team is happy to announce a new version of Rust, 1.93.0. • Rust is a programming language empowering everyone to build reliable and efficient software. • If you have a p

crates.io: development update

Wed, 21 Jan 2026 00:00:00 +0000

• Six months have passed since our last crates.io development update, so it’s time for another one. • Here’s a summary of the most notable changes and improvements made tocrates.io

Results from the 2025 Go Developer Survey

Wed, 21 Jan 2026 00:00:00 +0000

• Go developers seek guidance on best practices, standard library use, and modern tooling. • AI-powered dev tools are widely used, yet satisfaction remains middling due to quality

What does it take to ship Rust in safety-critical?

Wed, 14 Jan 2026 00:00:00 +0000

• This is another post in our series covering what we learned through the Vision Doc process. • In our first post, we described the overall approach and what we learned about doing

Python 3.15.0 alpha 4

Tue, 13 Jan 2026 20:24:00 +0000

• Tuesday, January 13, 2026 Python 3.15.0 alpha 4 This is an early developer preview of Python 3.15 www.python.org/downloads/release/python-3150a4/ Major new features of the 3.15 s

Project goals update - December 2025

Mon, 05 Jan 2026 00:00:00 +0000

• The Rust project is currently working towards a slate of 41 project goals, with 13 of them designated as Flagship Goals. • This post provides selected updates on our progress tow

What do people love about Rust?

Fri, 19 Dec 2025 00:00:00 +0000

• Rust has been named Stack Overflow’s Most Loved (now called Most Admired) language every year since our 1.0 release in 2015. • That means people who use Rust want to keep using R

Python 3.15.0 alpha 3

Tue, 16 Dec 2025 14:44:00 +0000

• Tuesday, December 16, 2025 Python 3.15.0 alpha 3 This is an early developer preview of Python 3.15 www.python.org/downloads/release/python-3150a3/ Major new features of the 3.15

Project goals update - November 2025

Tue, 16 Dec 2025 00:00:00 +0000

• The Rust project is currently working towards a slate of 41 project goals, with 13 of them designated as Flagship Goals. • This post provides selected updates on our progress tow

Python 3.14.2 and 3.13.11 are now available!

Fri, 05 Dec 2025 21:29:00 +0000

• Friday, December 5, 2025 Python 3.14.2 and 3.13.11 are now available! • Two more, just three days after the last? • We found some regressions, so here’s an expedited pair of rele

Python 3.13.10 is now available, too, you know!

Tue, 02 Dec 2025 18:50:00 +0000

• Tuesday, December 2, 2025 Python 3.13.10 is now available, too, you know! • The latest version of Python 3.13 is now available! • Python 3.13.10 This is the tenth maintenance rel

Python 3.14.1 is now available!

Tue, 02 Dec 2025 16:43:00 +0000

• Tuesday, December 2, 2025 Python 3.14.1 is now available! • This is first maintenance release of Python 3.14 Python 3.14.1 is the first maintenance release of 3.14, containing ar

Python 3.15.0 alpha 2

Wed, 19 Nov 2025 09:56:00 +0000

• Wednesday, November 19, 2025 Python 3.15.0 alpha 2 This is an early developer preview of Python 3.15 https://www.python.org/downloads/release/python-3150a2/ Major new features of

Go's Sweet 16

Fri, 14 Nov 2025 00:00:00 +0000

• The Go Blog Go’s Sweet 16 This past Monday, November 10th, we celebrated the 16th anniversary of Go’s open source release! • We released Go 1.24 in February and Go 1.25 in August

The Green Tea Garbage Collector

Wed, 29 Oct 2025 00:00:00 +0000

• The Go Blog The Green Tea Garbage Collector Go 1.25 includes a new experimental garbage collector called Green Tea, available by setting GOEXPERIMENT=greenteagc at build time. •

Python 3.15.0 alpha 1

Wed, 15 Oct 2025 06:13:00 +0000

• Wednesday, October 15, 2025 Python 3.15.0 alpha 1 This is an early developer preview of Python 3.15 https://www.python.org/downloads/release/python-3150a1/ Major new features of

Python 3.13.9 is now available!

Tue, 14 Oct 2025 19:07:00 +0000

• Python 3.13.9 3.13.9 is an expedited release containing a fix for one specific regression in Python 3.13.8: - gh-139783: Fix inspect.getsourcelines for the case when a decorator

Python 3.12.12, 3.11.14, 3.10.19 and 3.9.24 are now available!

Thu, 09 Oct 2025 21:00:00 +0000

• Thursday, October 9, 2025 Python 3.12.12, 3.11.14, 3.10.19 and 3.9.24 are now available! • Old-timer Release Party We couldn’t just let Hugo have fun with 3.14.0, so here are new

Python 3.14.0 (final) is here!

Tue, 07 Oct 2025 15:09:00 +0000

• Python 3.14.0 is now available python.org/downloads/release/python-3140/ This is the stable release of Python 3.14.0 Python 3.14.0 is the newest major release of the Python progr

Python 3.13.8 is now available

Tue, 07 Oct 2025 14:42:00 +0000

• Tuesday, October 7, 2025 Python 3.13.8 is now available The latest version of Python 3.13 is now available! • Python 3.13.8 This is the eighth maintenance release of Python 3.13

Flight Recorder in Go 1.25

Fri, 26 Sep 2025 00:00:00 +0000

• The Go Blog Flight Recorder in Go 1.25 In 2024 we introduced the world to more powerful Go execution traces. • In that blog post we gave a sneak peek into some of the new functio

Python 3.14.0rc3 is go!

Thu, 18 Sep 2025 12:06:00 +0000

• It’s 🪄 finally 🪄 the final 3.14 release candidate! • https://www.python.org/downloads/release/python-3140rc3/ Note: It’s another magic release. • We fixed another bug that requir

It's survey time! How has Go has been working out for you?

Tue, 16 Sep 2025 00:00:00 +0000

• The Go Blog It’s survey time! • How has Go has been working out for you? • Todd Kulesza, on behalf of the Go team16 September 2025 Hi Gophers! • Today we’re excited to announce o

A new experimental Go API for JSON

Tue, 09 Sep 2025 00:00:00 +0000

• The Go Blog A new experimental Go API for JSON Introduction JavaScript Object Notation (JSON) is a simple data interchange format. • Almost 15 years ago, we wrote about support f

Testing Time (and other asynchronicities)

Tue, 26 Aug 2025 00:00:00 +0000

• The Go Blog Testing Time (and other asynchronicities) In Go 1.24, we introduced the testing/synctest package as an experimental package. • This package can significantly simplify

Container-aware GOMAXPROCS

Wed, 20 Aug 2025 00:00:00 +0000

• The Go Blog Container-aware GOMAXPROCS Go 1.25 includes new container-aware GOMAXPROCS defaults, providing more sensible default behavior for many container workloads, avoiding t

Python 3.14.0rc2 and 3.13.7 are go!

Thu, 14 Aug 2025 19:15:00 +0000

• Not one but two expedited releases! • 🎉 🎉 Python 3.14.0rc2 It’s the final 🪄 penultimate 🪄 3.14 release candidate! • https://www.python.org/downloads/release/python-3140rc2/ Note:

Python 3.13.6 is now available

Wed, 06 Aug 2025 21:35:00 +0000

• Wednesday, August 6, 2025 Python 3.13.6 is now available The latest version of Python 3.13 is now available! • Python 3.13.6 This is the sixth maintenance release of Python 3.13

Python 3.14 release candidate 1 is go!

Tue, 22 Jul 2025 19:47:00 +0000

• Python 3.14 RC1 released, marking the penultimate release preview before final launch. • Only bug‑fix changes allowed between RC1 and the final 3.14 release. • Second candidate d

Python 3.14.0 beta 4 is here!

Tue, 08 Jul 2025 15:04:00 +0000

• Final Python 3.14 beta (3.14.0b4) released, ready for community testing. • Beta 4 is feature‑complete but may still change before release candidate. • Encourage third‑party maint