Landing: 63f3f898bbfd
Project / Subsystem
gcc / libstdc++
Date
2026-08-21
Author
Yuao Ma
Commit
63f3f898bbfda3678b28ebf923bda5282b4ae654
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- libstdc++
- patch_id
- —
- commit_hash
- 63f3f898bbfda3678b28ebf923bda5282b4ae654
- source_type
- github
- headline
- libstdc++: Optimize ranges::for_each for segmented iterators
- tldr
- Optimizes std::for_each for segmented iterators, improving performance.
- author
- Yuao Ma
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • libstdc++
- • optimization
- • iterator
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-21T00:00:00.000Z
This change optimizes the std::for_each algorithm when used with segmented iterators. Similar to a previous optimization for std::ranges::for_each, this update specifically targets the std::for_each implementation. The naive for-loop logic has been separated and optimized for segmented iterators. A performance benchmark for ranges::for_each has also been added to the test suite.