Landing: 81d25063773b
Project / Subsystem
gcc / gcc/aarch64
Date
2026-08-31
Author
Robin Dapp
Commit
81d25063773b48a163b0198aa5ed4a5468142e05
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc/aarch64
- patch_id
- —
- commit_hash
- 81d25063773b48a163b0198aa5ed4a5468142e05
- source_type
- github
- headline
- Set REGMODE_NATURAL_SIZE for advsimd vectors on AArch64
- tldr
- AArch64 now correctly sets REGMODE_NATURAL_SIZE for advsimd vectors, ensuring subregister validity for vector components.
- author
- Robin Dapp
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • aarch64
- • vectorization
- • compiler-internals
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-31T00:00:00.000Z
This change sets the REGMODE_NATURAL_SIZE for AArch64’s advsimd vectors to the size of a single vector element. This aligns with recent RISC-V changes and ensures that subregisters representing parts of a vector are correctly identified as invalid if they are smaller than a full vector, preventing incorrect code generation.