LLVM Weekly
@llvmweekly.org
A weekly email newsletter on developments in LLVM, Clang and related projects. Curated by @asbradbury.org
LLVM Weekly - #619, November 10th 2025. DFAJumpThreading on by default for CoreMark perf boost, further CAS development, MLIR pygments lexer improvements, Arm contributions to LLVM 21, and more llvmweekly.org/issue/619
LLVM Weekly - #619, November 10th 2025
llvmweekly.org
November 10, 2025 at 8:11 PM
LLVM Weekly - #619, November 10th 2025. DFAJumpThreading on by default for CoreMark perf boost, further CAS development, MLIR pygments lexer improvements, Arm contributions to LLVM 21, and more llvmweekly.org/issue/619
LLVM Weekly - #618, November 3rd 2025. Dev meeting roundtable notes, ABI lowering library blog post, Neoverse V3 scheduling model, Boost.Math imported, llvm.structured.gep, and more llvmweekly.org/issue/618
LLVM Weekly - #618, November 3rd 2025
llvmweekly.org
November 3, 2025 at 6:28 PM
LLVM Weekly - #618, November 3rd 2025. Dev meeting roundtable notes, ABI lowering library blog post, Neoverse V3 scheduling model, Boost.Math imported, llvm.structured.gep, and more llvmweekly.org/issue/618
LLVM Weekly - #617, October 27th 2025. Clang AST optimisations, LLVM contribution rate dashboard, Clang/LLVM built for Wasm available on NPM, and more. For those able to make it, enjoy the LLVM Dev Meeting this week! llvmweekly.org/issue/617
LLVM Weekly - #617, October 27th 2025
llvmweekly.org
October 27, 2025 at 7:48 PM
LLVM Weekly - #617, October 27th 2025. Clang AST optimisations, LLVM contribution rate dashboard, Clang/LLVM built for Wasm available on NPM, and more. For those able to make it, enjoy the LLVM Dev Meeting this week! llvmweekly.org/issue/617
LLVM Weekly - #616, October 20th 2025. Usability improvements to the Undefined Behavior Sanitizer, Clang bytecode interpreter developments, reducing process creation overhead for LLVM tests, null pointer arithmetic checker, and more llvmweekly.org/issue/616
LLVM Weekly - #616, October 20th 2025
llvmweekly.org
October 20, 2025 at 7:00 PM
LLVM Weekly - #616, October 20th 2025. Usability improvements to the Undefined Behavior Sanitizer, Clang bytecode interpreter developments, reducing process creation overhead for LLVM tests, null pointer arithmetic checker, and more llvmweekly.org/issue/616
LLVM Weekly - #615, October 13th 2025. Final call for 2025 US LLVM Dev Meeting registration, GNU Tools Cauldron 2025 videos posted, feedback on MLIR remarks, type punning through unions in C++, allocator partitioning hints, reproducible linker benchmarks with Nix, and more llvmweekly.org/issue/615
LLVM Weekly - #615, October 13th 2025
llvmweekly.org
October 13, 2025 at 4:43 PM
LLVM Weekly - #615, October 13th 2025. Final call for 2025 US LLVM Dev Meeting registration, GNU Tools Cauldron 2025 videos posted, feedback on MLIR remarks, type punning through unions in C++, allocator partitioning hints, reproducible linker benchmarks with Nix, and more llvmweekly.org/issue/615
LLVM Weekly - #614, October 6th 2025. Revising LLVM's AI tool policy, captures metadata on stores, make jobserver implementation, dumping SDags with sorted nodes, tail merging strings in the linker, and more llvmweekly.org/issue/614
LLVM Weekly - #614, October 6th 2025
llvmweekly.org
October 6, 2025 at 7:12 PM
LLVM Weekly - #614, October 6th 2025. Revising LLVM's AI tool policy, captures metadata on stores, make jobserver implementation, dumping SDags with sorted nodes, tail merging strings in the linker, and more llvmweekly.org/issue/614
LLVM Weekly - #613, September 29th 2025. clang-doc and libc bfloat16 GSoC project results, LLVM's machine scheduler, the future of DependenceAnalysis, {aarch64,riscv64}-unknown-hurd-gnu, software watchpoints in LLDB, and more llvmweekly.org/issue/613
LLVM Weekly - #613, September 29th 2025
llvmweekly.org
September 29, 2025 at 6:36 PM
LLVM Weekly - #613, September 29th 2025. clang-doc and libc bfloat16 GSoC project results, LLVM's machine scheduler, the future of DependenceAnalysis, {aarch64,riscv64}-unknown-hurd-gnu, software watchpoints in LLDB, and more llvmweekly.org/issue/613
LLVM Weekly - #612, September 22nd 2025. Lightweight Fault Isolation, student travel grant mentors, immutable releases, AI contribution policy, RISCVVLOptimizer improvements, dropping unnecessary assumes, custom clang-tidy checks with clang-query syntax, and more llvmweekly.org/issue/612
LLVM Weekly - #612, September 22nd 2025
llvmweekly.org
September 22, 2025 at 6:36 PM
LLVM Weekly - #612, September 22nd 2025. Lightweight Fault Isolation, student travel grant mentors, immutable releases, AI contribution policy, RISCVVLOptimizer improvements, dropping unnecessary assumes, custom clang-tidy checks with clang-query syntax, and more llvmweekly.org/issue/612
LLVM Weekly - #611, September 15th 2025. Ripple: A Compiler-Interpreted API for Efficient SIMD Programming, guidelines for adding/enabling new passes, on 'de-typification' of LLVM IR, lit using internal shell by default for LLVM tests, MLIR IRDL roadmap, and more llvmweekly.org/issue/611
LLVM Weekly - #611, September 15th 2025
llvmweekly.org
September 15, 2025 at 5:33 PM
LLVM Weekly - #611, September 15th 2025. Ripple: A Compiler-Interpreted API for Efficient SIMD Programming, guidelines for adding/enabling new passes, on 'de-typification' of LLVM IR, lit using internal shell by default for LLVM tests, MLIR IRDL roadmap, and more llvmweekly.org/issue/611
LLVM Weekly - #610, September 8th 2025. LLVM IR byte type, commits via PRs only, ABI lowering library update, LLVM Code Generation book from Quentin Colombet, debugging LLVM, and more llvmweekly.org/issue/610
LLVM Weekly - #610, September 8th 2025
llvmweekly.org
September 8, 2025 at 6:26 PM
LLVM Weekly - #610, September 8th 2025. LLVM IR byte type, commits via PRs only, ABI lowering library update, LLVM Code Generation book from Quentin Colombet, debugging LLVM, and more llvmweekly.org/issue/610
LLVM Weekly - #609, September 1st 2025. LLVM 21.1.0 released! profiling and testing math functions on GPUs (GSoC), MLIR pattern search, UBSan "trap reasons", early bird registration deadline for dev meeting on Sep 5th, Andrew Pinski launches GNU Tools Weekly, and more llvmweekly.org/issue/609
LLVM Weekly - #609, September 1st 2025
llvmweekly.org
September 1, 2025 at 7:07 PM
LLVM Weekly - #609, September 1st 2025. LLVM 21.1.0 released! profiling and testing math functions on GPUs (GSoC), MLIR pattern search, UBSan "trap reasons", early bird registration deadline for dev meeting on Sep 5th, Andrew Pinski launches GNU Tools Weekly, and more llvmweekly.org/issue/609
LLVM Weekly - #608, August 25th 2025. llvm-lit --update-tests, big pointer auth documentation updates, lifetime safety analysis initial use-after-free diagnostic, MLIR remarks, OpenMP unit testing framework, and more llvmweekly.org/issue/608
LLVM Weekly - #608, August 25th 2025
llvmweekly.org
August 25, 2025 at 5:46 PM
LLVM Weekly - #608, August 25th 2025. llvm-lit --update-tests, big pointer auth documentation updates, lifetime safety analysis initial use-after-free diagnostic, MLIR remarks, OpenMP unit testing framework, and more llvmweekly.org/issue/608
LLVM Weekly - #607, August 18th 2025. 21.1.0-rc3 (final RC?), Contend Addressable Storage in LLVM, cfi_salt, MLIR Wasm importer, and more llvmweekly.org/issue/607
LLVM Weekly - #607, August 18th 2025
llvmweekly.org
August 18, 2025 at 7:37 PM
LLVM Weekly - #607, August 18th 2025. 21.1.0-rc3 (final RC?), Contend Addressable Storage in LLVM, cfi_salt, MLIR Wasm importer, and more llvmweekly.org/issue/607
LLVM Weekly - #606, August 11th 2025. Constant-time selection in Clang for crypto algorithms, tail folding by default for RVV, clangd doxygen parser, WasmSSA MLIR dialect, and more llvmweekly.org/issue/606
LLVM Weekly - #606, August 11th 2025
llvmweekly.org
August 11, 2025 at 9:48 PM
LLVM Weekly - #606, August 11th 2025. Constant-time selection in Clang for crypto algorithms, tail folding by default for RVV, clangd doxygen parser, WasmSSA MLIR dialect, and more llvmweekly.org/issue/606
LLVM Weekly - #605, August 4th 2025. US LLVM Dev Meeting agenda posted, upstreaming CHERI, restrict in Clang, GlobalISel vs SelectionDAG in 2025, 'hardening' mode for Clang, log level support, debugging Wasm with LLDB, and more llvmweekly.org/issue/605
LLVM Weekly - #605, August 4th 2025
llvmweekly.org
August 4, 2025 at 5:33 PM
LLVM Weekly - #605, August 4th 2025. US LLVM Dev Meeting agenda posted, upstreaming CHERI, restrict in Clang, GlobalISel vs SelectionDAG in 2025, 'hardening' mode for Clang, log level support, debugging Wasm with LLDB, and more llvmweekly.org/issue/605
LLVM Weekly - #604, July 28th 2025. LLVM ❤️ ML workshop, implementing C++17 special math functions with Boost.Math, flang-tidy, LDBG debug logging macro, -f[no]-experimental-lifetime-safety, and more llvmweekly.org/issue/604
LLVM Weekly - #604, July 28th 2025
llvmweekly.org
July 28, 2025 at 8:06 PM
LLVM Weekly - #604, July 28th 2025. LLVM ❤️ ML workshop, implementing C++17 special math functions with Boost.Math, flang-tidy, LDBG debug logging macro, -f[no]-experimental-lifetime-safety, and more llvmweekly.org/issue/604
Reposted by LLVM Weekly
Pour one out for NativeClient, finally removed from the LLVM tree last week github.com/llvm/llvm-pr...
Remove Native Client support (#133661) · llvm/llvm-project@0d2e11f
Remove the Native Client support now that it has finally reached end of life.
github.com
July 21, 2025 at 10:06 AM
Pour one out for NativeClient, finally removed from the LLVM tree last week github.com/llvm/llvm-pr...
LLVM Weekly - #603, July 21st 2025. 21.x branch created, allocator partitioning hint, -opt-disable to disable pass by name, SFrame unwind info, generating dead_on_return attributes, lifetime safety dataflow analysis progress, and more llvmweekly.org/issue/603
LLVM Weekly - #603, July 21st 2025
llvmweekly.org
July 21, 2025 at 5:13 PM
LLVM Weekly - #603, July 21st 2025. 21.x branch created, allocator partitioning hint, -opt-disable to disable pass by name, SFrame unwind info, generating dead_on_return attributes, lifetime safety dataflow analysis progress, and more llvmweekly.org/issue/603
LLVM Weekly - #602, July 14th 2025. LLVM Dev Meeting talk and student travel grant deadline TOMORROW (Tue 15th), lifetime safety breakout group, Clang gains an initial intra-procedural flow-sensitive lifetime analysis, minimal DWARF unwinding information checker, and more llvmweekly.org/issue/602
LLVM Weekly - #602, July 14th 2025
llvmweekly.org
July 14, 2025 at 6:55 PM
LLVM Weekly - #602, July 14th 2025. LLVM Dev Meeting talk and student travel grant deadline TOMORROW (Tue 15th), lifetime safety breakout group, Clang gains an initial intra-procedural flow-sensitive lifetime analysis, minimal DWARF unwinding information checker, and more llvmweekly.org/issue/602
LLVM Weekly - #601, July 7th 2025. AsiaLLVM Dev Meeting videos posted, LLD support for GCC LTO, disallowing struct/array IR values inside functions, XeVM MLIR dialect, and more llvmweekly.org/issue/601
LLVM Weekly - #601, July 7th 2025
llvmweekly.org
July 7, 2025 at 6:43 PM
LLVM Weekly - #601, July 7th 2025. AsiaLLVM Dev Meeting videos posted, LLD support for GCC LTO, disallowing struct/array IR values inside functions, XeVM MLIR dialect, and more llvmweekly.org/issue/601
Recordings from last month's AsiaLLVM Developers' Meeting are now up on YouTube www.youtube.com/playlist?lis...
2025 AsiaLLVM Developers' Meeting - YouTube
Talks from the 2025 AsiaLLVM Developers' Meeting on June 10, 2025 at The Westin Tokyo
www.youtube.com
July 3, 2025 at 6:36 AM
Recordings from last month's AsiaLLVM Developers' Meeting are now up on YouTube www.youtube.com/playlist?lis...
LLVM Weekly - #600, June 30th 2025. Farewell PSTL, 21.x branch date, Flang progress report, reductions in libLLVM dynamic relocations, Windows Secure Hot-patching, and more. Also, 600 LLVM Weekly Issues, still without missing a week(!) llvmweekly.org/issue/600
LLVM Weekly - #600, June 30th 2025
llvmweekly.org
June 30, 2025 at 7:02 PM
LLVM Weekly - #600, June 30th 2025. Farewell PSTL, 21.x branch date, Flang progress report, reductions in libLLVM dynamic relocations, Windows Secure Hot-patching, and more. Also, 600 LLVM Weekly Issues, still without missing a week(!) llvmweekly.org/issue/600
LLVM Weekly - #599, June 23rd 2025. Functional safety group proposal, stdio.h baremetal support in libc, IRDL principles, InstCombine contributor guide updates, Model Context Protocol (MCP) server support added to LLDB, and more llvmweekly.org/issue/599
LLVM Weekly - #599, June 23rd 2025
llvmweekly.org
June 23, 2025 at 7:59 PM
LLVM Weekly - #599, June 23rd 2025. Functional safety group proposal, stdio.h baremetal support in libc, IRDL principles, InstCombine contributor guide updates, Model Context Protocol (MCP) server support added to LLDB, and more llvmweekly.org/issue/599
LLVM Weekly - #598, June 16th 2025. widechar support for LLVM libc, PGO for cross-compilation, MCP support for LLDB, clang-doc JSON generator, removing PSTL, and more llvmweekly.org/issue/598
LLVM Weekly - #598, June 16th 2025
llvmweekly.org
June 16, 2025 at 9:09 PM
LLVM Weekly - #598, June 16th 2025. widechar support for LLVM libc, PGO for cross-compilation, MCP support for LLDB, clang-doc JSON generator, removing PSTL, and more llvmweekly.org/issue/598
LLVM Weekly - #597, June 9th 2025. LLVM Developers' Meeting call for proposals opens, MLIR dialect for WebAssembly, MLIR project lighthouse, what patterns can/should be upstreamed to MLIR, 64-bit source locations, reducing the size of the MC decoder table, and more llvmweekly.org/issue/597
LLVM Weekly - #597, June 9th 2025
llvmweekly.org
June 9, 2025 at 6:56 PM
LLVM Weekly - #597, June 9th 2025. LLVM Developers' Meeting call for proposals opens, MLIR dialect for WebAssembly, MLIR project lighthouse, what patterns can/should be upstreamed to MLIR, 64-bit source locations, reducing the size of the MC decoder table, and more llvmweekly.org/issue/597