Landing: c5e57d89b587
Project / Subsystem
gcc / gcc
Date
2026-08-09
Author
Aldy Hernandez
Commit
c5e57d89b587e5efdfca0d9f3044b6e23bb41ce8
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc
- patch_id
- —
- commit_hash
- c5e57d89b587e5efdfca0d9f3044b6e23bb41ce8
- source_type
- github
- headline
- Convert float_binary_op_range_finish to use sub-ranges.
- tldr
- Refactors range analysis to use sub-ranges and `contains_zero_p`, improving accuracy.
- author
- Aldy Hernandez
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • optimization
- • range-analysis
- • floating-point
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-09T00:00:00.000Z
The float_binary_op_range_finish function has been refactored to use sub-ranges and the contains_zero_p check. This change improves the precision of range analysis by examining sub-ranges of the left-hand side (lhs) rather than just the hull endpoints. This is particularly useful for floating-point operations where sub-range analysis can lead to more accurate results.