Landing: 78215710ccaf
Project / Subsystem
gcc / s390x
Date
2026-02-10
Author
Juergen Christ
Commit
78215710ccafc31fdacc2c6f3080303b5f2d1358
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- s390x
- patch_id
- —
- commit_hash
- 78215710ccafc31fdacc2c6f3080303b5f2d1358
- source_type
- github
- headline
- s390x: Implement vec_cbranch_{all,any}
- tldr
- Early-exit vectorization enabled for s390x by implementing vec_cbranch instructions.
- author
- Juergen Christ
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • s390x
- • vectorization
- • optimization
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-02-10T00:00:00.000Z
The s390x GCC backend now implements vec_cbranch_all and vec_cbranch_any instructions, enabling early-exit vectorization. This allows the compiler to terminate vector operations as soon as a condition is met, potentially improving performance. The test suite has been adjusted to account for s390x’s limitations with variable-length vectors and basic vector load schemes.