v0.7.1

MetaCG v0.7.1

Fixes

• Fix CMake policy to work with CMake versions older than 3.24

MetaCG v0.7.0

MetaCG v0.7.0

MetaCG v0.7.0 brings these new features and fixes

MetaCG graph library

• Fixes compilation errors with some gcc versions
• Implements a detection mechanism for node hash collisions
• Implements a new callgraph format version and accompanying reader and writer facilities
• Removes unmaintained dot-graph reading facilities
• Removes unmaintained call-graph statistics module
• Reorganizes namespaces throughout the whole library
• Streamlines usage of reader and writer facilities
• Unifies the logging usage throughout the project

PGIS

• Fixes an error in which PIRA could not complete any runs after the first one, if load imbalance was enabled in pgis due to an export error

Infrastructure

• Improves the docker container build times
• Improves the CMake setup to feature a default build configuration and better dependency handling
• Removes module that was once used to convert phasar generated callgraphs into the mcg format

MetaCG v0.6.2

Changelog

Fixes

• Fixes an issue which caused PIRA-related metadata not being serialized correctly again.

MetaCG v0.6.1

Changelog

Fixes

• Issues when building MetaCG on certain RHEL systems

MetaCG v0.6.0

MetaCG v0.6.0 brings these new features and fixes

• Improved CMake that allows to use the graph library via add_link_libraries
• Utility tool to automatically generate a call graph via CMake File API
• Simplified and updated CMake handling of dependencies
• General code clean up

MetaCG Graph Library

• Removes explicit edge class
• Metadata is now registered automatically, simplifying the use of it
• Metadata can be attached to edges (not serialized into the file)
• Better multigraph managing API
• Improved implementation for json generation in MCGWriter class
• Ability to sort edges in generated dot output
• Ability to attach arbitrary Metadata and query its key
• Several fixes for potential null pointer accesses

CGCollector

• Fixes to name generation

PGIS

• Overhead-based heuristics to work within the PIRA automatic profiler

Infrastructure

• Ability to run all integration tests concurrently

MetaCG v0.5.0

Changelog

Functionality / Implementation

• Significant speed improvement in MetaCG building and querying the call-graph
• Adds MetaCG logger utility (to fix potential segmentation faults)
• Improves the handling of Ctors/Dtors significantly (differences in mangling of symbols with internal linkage between GCC and Clang may occur)
• Implements new and much better dot I/O functionality in separate (service) class and namespace.
• Adds new command line option semantics for dot export
• Removes some outdated command line options
• Adds experimental Alias Analysis for better handling of function pointers and for enabling the handling of cross TU Calls (off by default)
• Remove reachability fields from CgNode and related refactoring
• Changed ownership logic from shared to unique pointer
  • Callgraph-object is uniquely owned by MCGManager
  • Nodes and Edges are uniquely owned by Callgraph object
  • Access to these now works via raw pointer
• Fully switch from the old JSON annotation mechanism to the MCGWriter
• Deprecation of the setGraph method: PGIS_PIRA phases are now supposed to explicitly pass a call-graph if needed
• Changed program logic to be more conservative when dealing with questionable inputs
  • Querying existence of Metadata does not implicitly add Metadata
• [deprecated] Explicit modelling of edges, and transfer of graph-structure knowledge from node to call-graph

Fixes

• Fixes the reading of call counts and runtime from the cube file
• Fixes potential nullptr dereference and segmentation fault
• Fixes bug causing the format two tests to check the result of the format one tests
• Fixes potential CMake issue with modern linkers
• Fixes a bug that causes uninstantiated virtual template function to be added to the callgraph, causing clang to crash in getAllManglings()
• Fixes build with/without optional components

Infrastructure

• Matrix builds for GCC in version 10 and 11, and LLVM versions (10, 14) and (13, 14).
• Removes outdated jobs / tags
• Adds a template with our CI defaults
• Re-enables the podman based build in Ubuntu container

Versions

• Support for Clang/LLVM 10, 13 and 14

MetaCG v0.4.0

Changelog

Functionality

• MCGWriter to serialize the Callgraph into a MetaCG file.
• MetaDataHandler required value function to serialize the MetaData for MCGWriter
• Objects to model and consolidate file format information of MetaCG file format
• MCGManager can handle multiple call-graphs at a time

Fixes

• MCG file format version in CGMerge now read from first non-null file content
• Building error caused by static assert: ambigious operator
• Explicit list all required clang/llvm libraries as new versions of ld are stricter and don't link libraries just because a symbol in them is referenced.

Infrastructure

• Use C++17 instead of 20 to prevent build errors with GCC 11.2
• Improved library dependencies handling in CMake (especially for pre-installed libraries)
• Better Extra-P integration in builds

Versions

• Bumps nlohmann-json version to 3.10.5 (other versions may/should work too)

MetaCG v0.3.0

Changes

Features are user-facing, Fixes are both user-facing and developer-facing, Refactorings are developer-facing, CI are infrastructure related notes.

Features

• Aggregation strategies for Extra-P performance models and analysis parameter config file (PIRA II, LIDe)
• MetaCollectors for loop depth, conditional branches, (experimental) type of statements count, when type 2 metadata is enabled
• Add new algorithms for static filtering based on loop depth, FPAndMemOps or conditional branches
• Add options to select the algorithm for the cutoff selection
• Adds citation file
• Significant refactoring of MetaCG components (for details see below)

Fixes

• Update ToolchainOptions to explicit link required libraries. New linker versions are more strict with linking not explicit declared dependencies
• Update spdlog
• Fix warnings reported by clang-tidy, especially unnecessary copies
• Run tests in Debug configuration, so that asserts are enabled
• Remove leftover headers
• Update detection of python include directory
• Disable wrong asserts
• Updates MetaCG to correct release version
• Working on issue w.r.t. recursion and adds test for recursive function
• Potential temporary fix for non-terminating CGCollector on some target codes

Refactorings

• Split graph components into their own library / namespace
• Moved top-level MetaData to own file.
• Moved MCGReader to graph lib && removed outdated code
• New high-level interface for callgraph construction
• Moved MetaData basic definitions to their own respective file in graph namespace
• Moved graph library into separate componen
• Prefer set/map over the unordered variants to make results consistent across different systems
• External dependencies are now put into ${METACG_REPO}/extern by default
• Applies the source formatter to all source code files (seems that CLion in my branch messed that up)
• cmake-format style file to be used with cmake-format
• Removed outdated CMake resources
• Renamed CMake to better fit overall structure

CI

• Added container step in Gitlab CI
• Different stages won't work on different machines. Make sure you use the right tags.
• Updated Gitlab CI yaml config to account for new project structure
• Improves container setup to use pre-stored base image from registry
• CI will fail if CMakeLists and other CMake-related files do not adhere to the formatting style file
• Enables podman builds for all branches and runs PGIS unit tests in the container
• Uses more modern CMake commands to build and install MetaCG

MetaCG v0.2.1

Changelog

CGCollector

Fixes non-termination issue in CGCollector for some cases
Fixes crashes for certain ways of recursion

PGIS

Fixes an error that prohibited PIRA I from producing any reasonable results.
Adds FindSynchronizationPoint mechanism to PGIS and its LI detection.
Makes the export of the CG as dot file a CLI switch in PGIS
Makes call-site instrumentation optional

MetaCG v0.2.0

Whole-program call-graph file format in json format.

Changelog

MetaCG

• Introduces new file format, with a more unified interface for meta annotations
• Adds a few other MetaInformation examples

CGCollector

• Improves the handling of function pointers within a single translation unit

PGIS

• Includes the load imbalance detection heuristics from Peter Arzt's Bachelor thesis
• Refactorings to the Reader to handle both file formats