Landing: 4288735a9d03
Project / Subsystem
gcc / gcc/vectorizer
Date
2026-08-05
Author
Richard Biener
Commit
4288735a9d034b47ded8a38d0d82e9b3e536c534
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc/vectorizer
- patch_id
- —
- commit_hash
- 4288735a9d034b47ded8a38d0d82e9b3e536c534
- source_type
- github
- headline
- Cleanup vectorizable_conversion related code.
- tldr
- Vectorizer simplifies handling of scalar operands in vectorizable conversions.
- author
- Richard Biener
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • vectorizer
- • optimization
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-05T00:00:00.000Z
This commit refactors parts of the GCC vectorizer, specifically the vectorizable_conversion function. It elides requirements for scalar operands op0 and op1 when they are fed by SLP permutations, which cannot be computed in that context. A new overload for vect_is_simple_use is introduced to ease this transition, and an unused scalar operand argument is removed from supportable_indirect_convert_operation.