Landing: 4ef8dcedbdd3
Project / Subsystem
gcc / avr
Date
2026-08-11
Author
Georg-Johann Lay
Commit
4ef8dcedbdd34aa484d21defd6ad7b8d811929e7
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- avr
- patch_id
- —
- commit_hash
- 4ef8dcedbdd34aa484d21defd6ad7b8d811929e7
- source_type
- github
- headline
- Use hard-register constraints in AVR target fixed-point instructions
- tldr
- Improves AVR code generation for fixed-point operations by using hard-register constraints.
- author
- Georg-Johann Lay
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • avr
- • code-generation
- • compiler
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-11T00:00:00.000Z
This commit refactors the AVR target’s fixed-point instruction definitions to utilize hard-register constraints. This change aims to improve code generation efficiency and correctness for fixed-point arithmetic, particularly for multiply operations, by better aligning with the architecture’s register allocation.