Landing: 307bef6931b7
Project / Subsystem
gcc / genemit
Date
2026-08-07
Author
Kyrylo Tkachov
Commit
307bef6931b7e14e194871545fe69c73d832db83
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- genemit
- patch_id
- —
- commit_hash
- 307bef6931b7e14e194871545fe69c73d832db83
- source_type
- github
- headline
- genemit: Distribute overloaded-name definitions across output files
- tldr
- Balances generated code size across files to improve parallel compilation times.
- author
- Kyrylo Tkachov
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • genemit
- • build system
- • performance
- • AArch64
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-07T00:00:00.000Z
This commit refactors genemit to distribute the definitions of overloaded names more evenly across output files. Previously, a single file received all definitions for add_clobbers, added_clobbers_hard_reg_p, and code_for_/gen_ pairs. This led to a significant size imbalance, with one file being 70% larger than others, slowing down parallel compilation. By assigning an output file per overloaded name, the file sizes are now balanced within a 3% spread, improving overall build times.