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LLVM 20.X Release

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Last updated Jun 12, 2025
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branch: release/20.x

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  • Many libcxx/test/benchmarks tests FAIL

    libc++libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi.
    test-suite
    Status: Open.
    #125510 In llvm/llvm-project;
    · rorth opened on Feb 3, 2025

  • LLVM 19 unable to build BPF target

    packaging
    platform:windows
    Status: Open.
    #127120 In llvm/llvm-project;
    · Alan-Jowett opened on Feb 13, 2025

  • Flang :: Lower/namelist.f90 FAILs

    flang:ir
    Status: Open.
    #128855 In llvm/llvm-project;
    · rorth opened on Feb 26, 2025

  • Clang 20.1.0 RC3 unit tests broken on Windows with Visual Studio 2022 version 17.13

    build-problem
    compiler-rt
    platform:windows
    Status: Open.
    #128989 In llvm/llvm-project;
    · songdongsheng opened on Feb 27, 2025

  • release/20.x: [lld][WebAssembly] Support for the custom-page-sizes WebAssembly proposal (#128942)

    backend:WebAssembly
    lld
    lld:wasm
    llvm:binary-utilities
    mcMachine (object) code
    objectyaml
    Status: Open (in progress).
    llvm/llvm-projectnumber 129762
    #129762 In llvm/llvm-project;
    · llvmbot opened on Mar 4, 2025

  • LLVMgold.so is not included in LLVM-20.1.1-Linux-X64.tar.xz

    packaging
    platform:linux
    Status: Open.
    #132168 In llvm/llvm-project;
    · puni073 opened on Mar 20, 2025

  • [flang] fatal Fortran runtime error

    crashPrefer [crash-on-valid] or [crash-on-invalid]
    flang:runtime
    Status: Open.
    Bug
    #129877 In llvm/llvm-project;
    · dnoan opened on Mar 5, 2025

  • release/20.x: [flang] Fix missed case of symbol renaming in module file generation (#132475)

    flangFlang issues not falling into any other category
    flang:semantics
    Status: Open (in progress).
    llvm/llvm-projectnumber 133223
    #133223 In llvm/llvm-project;
    · llvmbot opened on Mar 27, 2025

  • [clang][Sema] theoretical ABI break in LLVM 20.1.1

    ABIApplication Binary Interface
    clang:frontendLanguage frontend issues, e.g. anything involving "Sema"
    Status: Open.
    Bug
    #133955 In llvm/llvm-project;
    · isuckatcs opened on Apr 1, 2025

  • LLVM 20 packages ship bitcode instead of object files

    packaging
    Status: Open.
    #133580 In llvm/llvm-project;
    · AlexDenisov opened on Mar 29, 2025

  • LLVM-20.1.0-Linux-ARM64 release is missing libomp

    openmp
    packaging
    platform:linux
    Status: Open.
    #135021 In llvm/llvm-project;
    · luporl opened on Apr 9, 2025

  • [Hexagon] Handle Call Operand vxi1 in Hexagon without HVX Enabled

    backend:Hexagon
    Status: Open (in progress).
    llvm/llvm-projectnumber 136546
    #136546 In llvm/llvm-project;
    · pkarveti opened on Apr 21, 2025

  • release/20.x: [LV] Fix crash when building partial reductions using types that aren't known scale factors (#136680)

    llvm:transforms
    vectorizers
    Status: Open (in progress).
    llvm/llvm-projectnumber 136863
    #136863 In llvm/llvm-project;
    · llvmbot opened on Apr 23, 2025

  • release/20.x: [InstCombine] Fix ninf propagation for fcmp+sel -> minmax (#136433)

    llvm:instcombine
    llvm:transforms
    Status: Open (in progress).
    llvm/llvm-projectnumber 137605
    #137605 In llvm/llvm-project;
    · llvmbot opened on Apr 28, 2025

  • release/20.x: [RISCV] Fix assertion failure when using -fstack-clash-protection (#135248)

    backend:RISC-V
    Status: Open (in progress).
    llvm/llvm-projectnumber 139388
    #139388 In llvm/llvm-project;
    · llvmbot opened on May 10, 2025

  • PowerPC regressions introduce by 3469db82b5c821c94b58c0b81f03bbef51efa30b

    backend:PowerPC
    llvm:SLPVectorizer
    miscompilation
    regression
    Status: Open.
    Bug
    #141642 In llvm/llvm-project;
    · tstellar opened on May 27, 2025

  • release/20.x: [clang-repl] Ensure clang-repl accepts all C keywords supported in all language models (#142749)

    clangClang issues not falling into any other category
    clang:frontendLanguage frontend issues, e.g. anything involving "Sema"
    Status: Draft (not ready).
    llvm/llvm-projectnumber 142909
    #142909 In llvm/llvm-project;
    · llvmbot opened on Jun 5, 2025

  • [AArch64][SME] Fix restoring callee-saves from FP with hazard padding

    backend:AArch64
    Status: Open (in progress).
    llvm/llvm-projectnumber 143371
    #143371 In llvm/llvm-project;
    · MacDue opened on Jun 9, 2025

  • release/20.x: [LoongArch] Fix '-mno-lsx' option not disabling LASX feature (#143821)

    backend:loongarch
    clangClang issues not falling into any other category
    clang:driver'clang' and 'clang++' user-facing binaries. Not 'clang-cl'
    Status: Open (in progress).
    llvm/llvm-projectnumber 143882
    #143882 In llvm/llvm-project;
    · llvmbot opened on Jun 12, 2025

  • [clan-reply] Backport PTU error recovery to 20.x

    clangClang issues not falling into any other category
    clang:frontendLanguage frontend issues, e.g. anything involving "Sema"
    Status: Open (in progress).
    llvm/llvm-projectnumber 143893
    #143893 In llvm/llvm-project;
    · DavidSpickett opened on Jun 12, 2025
    •