Landing: 4756a4c0cfae
Project / Subsystem
gcc / gcc/genrecog
Date
2026-08-07
Author
Kyrylo Tkachov
Commit
4756a4c0cfaeb18e7fff9108cd9c5d1e1e116690
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc/genrecog
- patch_id
- —
- commit_hash
- 4756a4c0cfaeb18e7fff9108cd9c5d1e1e116690
- source_type
- github
- headline
- genrecog: Write each .md condition out once
- tldr
- Reduces the size of insn-recog-*.cc files by emitting conditions as inline functions.
- author
- Kyrylo Tkachov
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • gcc
- • optimization
- • code generation
- • aarch64
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-07T00:00:00.000Z
The genrecog tool in GCC previously emitted each pattern condition inline, leading to duplicated code and large generated files. This commit refactors genrecog to define a helper inline function for each unique condition and call that function from the generated code. This significantly reduces the size of insn-recog-*.cc files, speeds up compilation, and lowers memory usage, as demonstrated on AArch64.