Landing: 2b371286fd58
Project / Subsystem
gcc / gcc/aarch64
Date
2026-01-10
Author
Artemiy Volkov
Commit
2b371286fd58c8b59b9de2f062ae51e29a2d4e8d
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc/aarch64
- patch_id
- —
- commit_hash
- 2b371286fd58c8b59b9de2f062ae51e29a2d4e8d
- source_type
- github
- headline
- AArch64: Add zeroing forms for predicated SVE top FP conversions
- tldr
- The compiler now supports zeroing predication for several SVE FP conversion instructions, enabled under SVE2.2 or SME2.2.
- author
- Artemiy Volkov
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • aarch64
- • sve
- • sme
- • intrinsics
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-01-10T00:00:00.000Z
The compiler now supports zeroing predication for several SVE FP conversion instructions, enabled under SVE2.2 or SME2.2. This change adds an alternative that emits a single zeroing-predication form of the instructions, as long as the sve2p2_or_sme2p2 condition holds. Narrowing conversions now use the new top_narrowing_convert SVE function base class, which injects a const_vector selector operand at expand time.