Landing: 0e0634fa1687
Project / Subsystem
gcc / tree-optimization
Date
2026-08-24
Author
Richard Biener
Commit
0e0634fa16871672beef1187da0d43cb10dd3182
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- tree-optimization
- patch_id
- —
- commit_hash
- 0e0634fa16871672beef1187da0d43cb10dd3182
- source_type
- github
- headline
- SLP scheduling respects trapping statements
- tldr
- SLP vectorization now correctly handles statements that might trap, preventing incorrect scheduling and ICEs.
- author
- Richard Biener
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • optimization
- • vectorization
- • bugfix
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-24T00:00:00.000Z
The SLP (Superword-Level Parallelism) scheduler in GCC now correctly respects constraints imposed by potentially trapping statements. This prevents SLP from scheduling instructions after a trapping statement if that statement dominates the schedule point, fixing an ICE and improving the robustness of vectorization.