Landing: 5038e4ade528
Project / Subsystem
gcc / gcc/range-op-float
Date
2026-08-04
Author
Aldy Hernandez
Commit
5038e4ade5289798cdeb30723facb481d707c426
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc/range-op-float
- patch_id
- —
- commit_hash
- 5038e4ade5289798cdeb30723facb481d707c426
- source_type
- github
- headline
- Convert int to float casts to sub-ranges
- tldr
- Integer to float casts now correctly handle sub-ranges for more accurate floating-point range analysis.
- author
- Aldy Hernandez
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • optimization
- • floating-point
- • compiler
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-04T00:00:00.000Z
GCC’s range analysis for floating-point operations now correctly handles integer-to-float casts by processing each sub-range of the integer type individually. Previously, operator_cast::fold_range only considered the overall hull of the integer range, potentially leading to inaccuracies. This change improves the precision of floating-point range analysis, especially for complex integer-to-float conversions, and includes a new test case.