Landing: 240bfe82a1f9
Project / Subsystem
gcc / internal-fn
Date
2026-09-25
Author
Jakub Jelinek
Commit
240bfe82a1f937a9b0be9877754a3d23567d5ec9
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- internal-fn
- patch_id
- —
- commit_hash
- 240bfe82a1f937a9b0be9877754a3d23567d5ec9
- source_type
- github
- headline
- Fix .MUL_OVERFLOW expansion for non-mode precision arguments
- tldr
- Correctly expands built-in multiplication overflow checks for arguments with non-standard precision.
- author
- Jakub Jelinek
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • integer
- • optimization
- • builtin
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-09-25T00:00:00.000Z
This commit fixes an issue in the expansion of the .MUL_OVERFLOW built-in function when arguments do not conform to standard precision modes. Previously, the code assumed uniform precision, leading to incorrect results for types like _BitInt. The fix ensures proper handling of value ranges for these non-standard types, particularly when mixed with signed or unsigned values.