Landing: 35b4c01575e1
Project / Subsystem
gcc / gcc
Date
2026-09-28
Author
Richard Biener
Commit
35b4c01575e15550b49c82fe146b2669db6320a7
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc
- patch_id
- —
- commit_hash
- 35b4c01575e15550b49c82fe146b2669db6320a7
- source_type
- github
- headline
- Correctly handle COMPCODE_FALSE/TRUE trapping in combine_comparisons
- tldr
- Fixes floating-point exception handling by ensuring combine_comparisons doesn't incorrectly flag boolean comparison results as trapping.
- author
- Richard Biener
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • optimization
- • floating-point
- • bugfix
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-09-28T00:00:00.000Z
This commit corrects a bug in GCC’s combine_comparisons function where COMPCODE_FALSE and COMPCODE_TRUE were erroneously treated as trapping operations when floating-point trapping was enabled. This led to the elimination of necessary IEEE exceptions. The fix modifies the condition that determines if a comparison traps, ensuring that these boolean outcomes do not trigger the trapping logic, thereby preserving correct floating-point exception behavior.