Landing: 7306944cffc4
Project / Subsystem
gcc / gcc/tree-optimization
Date
2026-07-16
Author
Andrew MacLeod
Commit
7306944cffc49249c4947e6f9b13130986f24f5a
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc/tree-optimization
- patch_id
- —
- commit_hash
- 7306944cffc49249c4947e6f9b13130986f24f5a
- source_type
- github
- headline
- Logical AND and OR operations now better infer operand ranges.
- tldr
- Improved range analysis for logical AND/OR operations to infer more precise constraints on operands.
- author
- Andrew MacLeod
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • gcc
- • optimization
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-07-16T00:00:00.000Z
This update enhances GCC’s rangeops to more accurately infer value ranges for operands involved in logical AND and OR operations. For example, it now recognizes that if op1 & TRUE results in [0, 0], then op1 must be [0, 0]. Similarly, for op1 | FALSE resulting in [1, 1], op1 must be [1, 1]. These improvements allow for tighter value range propagation, potentially enabling further optimizations.