Landing: c66387c4b201
Project / Subsystem
gcc / xtensa
Date
2026-09-12
Author
Takayuki 'January June' Suwa
Commit
c66387c4b201e2576cbd06909e861ada1884685f
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- xtensa
- patch_id
- —
- commit_hash
- c66387c4b201e2576cbd06909e861ada1884685f
- source_type
- github
- headline
- XTENSA: Simplify xtensa_valid_move() by removing obsolete check
- tldr
- Xtensa target code removes an old workaround for the Reload pass, as LRA now handles constraints correctly.
- author
- Takayuki 'January June' Suwa
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • xtensa
- • register allocation
- • optimization
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-09-12T00:00:00.000Z
The xtensa_valid_move function has been simplified by removing a workaround that prevented non-register sources from being directly assigned to the stack pointer. This check was originally necessary because the older Reload pass was less strict with operand constraints. With the adoption of the Later Register Allocator (LRA), which adheres strictly to constraints, this workaround is no longer needed, and the function can be safely simplified. A new test case ensures the correct behavior.