Landing: b3ef2a69325c
Project / Subsystem
gcc / risc-v
Date
2026-07-18
Author
Jin Ma
Commit
b3ef2a69325c1c5d9a05df8ac48fc256f8862480
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- risc-v
- patch_id
- —
- commit_hash
- b3ef2a69325c1c5d9a05df8ac48fc256f8862480
- source_type
- github
- headline
- RISC-V: Widen fusion pair bitmask to unsigned HOST_WIDE_INT
- tldr
- Increases the size of the fusion pair bitmask in RISC-V to support more instruction fusion types in the future.
- author
- Jin Ma
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • risc-v
- • optimization
- • architecture
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-07-18T00:00:00.000Z
The RISC-V compiler backend now uses a wider bitmask type for instruction fusion pairs. This change accommodates a larger number of potential fusion types, preventing overflow issues as more advanced CPU features are supported, and enabling future extensibility.