CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[0.10.0]

Changed

• Load object files lazily to minimise memory usage

[0.9.2]

Fixed

• Parsing of hash tables with the bitmap data field

[0.9.1]

Fixed

• Fix expression evaluation for split regions.

[0.9.0]

Added

• Basic MC/DC parsing in object files
• llvm 21 into tests

Changed

• Removed build script so there's no longer cfgs for the LLVM version compiled against

Fixed

• Non-version number flags in version field weren't masked out when using version for indexed profile parsing of causing parse errors.

[0.8.3]

Changed

• Saturating operations on expression adding/subtracting to avoid panics

[0.8.2]

Changed

• More performance improvements this time changing search order to prefer deeper expression nodes first
• Read object file sections without loading whole file into memory.

[0.8.1] 2025-05-06

Changed

• Increased usage of memoization of hashes -> profiles to speedup report generation more

[0.8.0] 2025-05-03

Added

• LLVM 20 into the test matrix

Changed

• Big performance improvements! Removed some dumb code, made some normal code a bit better

[0.7.1] 2025-02-14

Changed

• InstrumentationProfile::is_empty now takes into account the symbol table
• Bump MSRV to 1.80.0
• Remove invalid assertion from HashTable

[0.7.0] - 2024-08-05

Added

• LLVM 19 support (ignores function entry coverage and some failing proftext files)

[0.6.0] - 2024-05-17

Added

• Added the ability to filter out certain sections from the generated coverage reports

Changed

• Now use some hashmap based caching to speedup record lookup during profile merge.

[0.5.0] - 2024-04-28

Changed

• Now allow binaries to fail parsing for the mapping information (depdendent on function argument)

[0.4.0] - 2024-04-12

Added

• LLVM 17 and 18 support (test fails still: check_mapping_consistency but tarpaulin tests all pass so nearly all working)

Changed

• Removed another two redundant hash computations

[0.3.3] - 2023-04-04

Changed

• Cache name hash calculation to avoid recomputing (perf)

[0.3.2] - 2023-03-29

Added

• llvm-16 test files to ensure support doesn't break

Fixed

• Fixed parsing of branch region counters

[0.3.1] - 2023-01-23

Added

• Debug logging via tracing

Fixed

• Build on 32 bit architectures

[0.3.0] - 2022-09-26

Added

• InstrumenationProfile::is_empty to detect when there are no records
• Fuzzing module for profile files

Changed

• Added anyhow and use in place of Result<T, Box<dyn Error>>
• Make error type for profiles VerboseError

Fixed

• Handle merging of completely disjoint records - now profiles generated from multiple applications are accurately merged
• Handle invalid Hash enum variant in IndexedProfile

[0.2.0] - 2022-09-11

Changed

• Made instrumentation profile parsing failure message more serious
• Made hit adding in report use saturating_add to prevent overflow

Fixed

• Make counter value signed when tracking expressions to prevent underflow
• Multiply max counters by counter size when comparing to counter delta
• Fixed handling of profile instrumentation not tied to a counter with source location
• Incorrect matching on hashes for instrumentation profile merging

[0.1.1] - 2022-06-26

Added

• Detection of memory profiling

Fixed

• Counter offsetting in raw profiles now implemented
• Counter size for byte coverage now correct
• Text profile now handles carriage returns

[0.1.0] - 2022-06-05

Added

• Parsing of indexed, text and raw profiles (llvm version 11, 12, 13, 14)
• Parsing of instrumented binary and generating line coverage reports