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CHANGELOG.md

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Changelog

Notable changes to GenMC will be documented in this file. This repository is only updated whenever a new version of GenMC is released.

[Unreleased]

[0.10.2] - 2024.09.11

Added

  • Support for LLVM 17/18
  • GenMC now warns when memory is not freed
  • Minor performance improvements
  • Landing page for doxygen + rudimentary development documentation

Changed

  • __VERIFIER_assume() and __VERIFIER_spin_end() now take a boolean argument (instead of int)
  • GenMC now uses the new LLVM pass manager
  • IMM performance may incur a minor penalty
  • Project layout under src

Fixes

  • Minor bug fixes

[0.10.1] - 2024.02.22

Fixes

  • Fixed in-place revisiting for CASes
  • Fixed genmc include path (by Jonathan Schwender)
  • Minor bug fixes

Changed

  • Verbosity level is now respected for stdout too
  • GenMC is less conservative when reporting ww-races

[0.10.0] - 2023.10.25

Added

  • Support for SC, TSO, RA memory models
  • Symmetry reduction (automatic or via __VERIFIER_spawn_symmetric)
  • In-place revisiting (from Awamoche [CAV 2023])
  • Preemption/Round-Robin bounding under SC [TACAS 2023, FMCAD 2023]
  • State-space size estimation before verification begins
  • Performance optimizations
  • Support for LLVM-16
  • Rudimentary doxygen documentation

Changed

  • GenMC now requires a compiler with C++20 support

Deprecated

  • Support for LLVM-{7,8,9}

Removed

  • Support for LKMM, Persevere

Fixes

  • Various bug issues

[0.9] - 2022.12.26

Added

  • Better C++ code support
  • Performance optimizations
  • Faster configure
  • Support for LLVM-{14, 15}

Changed

  • GenMC now requires a C++14-compliant compiler

Removed

  • Support for LLVM-6.0
  • Dependency on libclang-dev

Fixes

  • Bug fixes

[0.8] - 2022.02.22

Added

  • Built-in support for hazard pointers
  • Annotations for faster data-structure verification via -helper (experimental)
  • -no-unroll switch to exclude functions from unrolling
  • Performance optimizations

Changed

  • GenMC now runs under -mo by default
  • Enhanced graph and DOT printing

Removed

  • Support for LLVM-{3.8, 4.0}

Fixes

  • Documentation
  • Various bug fixes

[0.7] - 2022.01.13

Added

  • Core algorithm now follows TruSt
  • Support for concurrent verification (-nthreads=<uint>)
  • Support for atomic_{nand,umax,umin,max,min}
  • Support for LLVM-{12,13}

Changed

  • LAPOR is temporarily disabled

Deprecated

  • Support for LLVM-{3.8,4.0}

Removed

  • Verification of user-defined libraries

Fixes

  • Bug fixes

[0.6.1] - 2021.07.27

Added

  • Documentation for for __VERIFIER_spin_{start,end}
  • More accesses to freed memory are detected
  • GenMC warns about execution graphs getting too large

Changed

  • Liveness checks are only allowed under -mo now

Fixes

  • Bug fixes

[0.6] - 2021.05.30

Added

  • Support for LKMM (experimental)
  • Native support for pthread_barrier_t (via BAM)
  • More loops are automatically transformed into assume statements
  • Support for liveness checks reinstated
  • Documentation for new features

Changed

  • Error message for mixed-size accesses

Fixes

  • GenMC's output is now properly directed to stdout
  • Proper support for pthread_mutex_init and pthread_mutex_destroy
  • Various bugs

[0.5.3] - 2020.12.06

Added

  • Support for aligned_alloc()

Fixes

  • Fixes for ppo calculation in IMM
  • malloc() now returns aligned addresses
  • Documentation fix and update
  • Other minor bugs

[0.5.2] - 2020.10.08

Added

  • Documentation for Persevere, LAPOR

[0.5.1] - 2020.10.01

Added

  • Support for LLVM 11

Removed

  • Temporarily removed liveness support for fixing

Fixes

  • Build fixes for LLVM 10

[0.5] - 2020.09.23

Added

  • Support for some unistd.h system calls
  • Support for checking persistency semantics of files under ext4 (experimental)
  • Race detection on automatic variables
  • Checking for accessing uninitialized memory
  • Symmetry reduction (unstable)
  • Liveness checks (experimental)
  • Support for memcpy() (experimental)
  • Support for C++ (experimental)
  • Support for <threads.h>
  • Support for LLVM-9
  • New CHANGELOG.md file to track changes in the project.

Changed

  • Names of various switches

Removed

  • Support for LLVM 3.5

Fixes

  • Various bug fixes
  • Test cases under macOS