Landing: f9b60a8bd756
Project / Subsystem
gcc / ipa-cp
Date
2026-10-05
Author
Martin Jambor
Commit
f9b60a8bd7569f59534a42d1383c1f66a37542cf
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- ipa-cp
- patch_id
- —
- commit_hash
- f9b60a8bd7569f59534a42d1383c1f66a37542cf
- source_type
- github
- headline
- ipa-cp: Adjust PGO IPA-CP cloning heuristics
- tldr
- Refines GCC's PGO-based IPA-CP cloning heuristics by scaling run-time metrics.
- author
- Martin Jambor
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • optimization
- • ipa
- • pgo
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-10-05T00:00:00.000Z
GCC’s inter-procedural analysis (IPA) cloning pass, when used with Profile-Guided Optimization (PGO), now correctly scales the run-time metrics used for evaluating cloning opportunities. This adjustment ensures that these metrics are relative to the total program run time, aligning PGO-driven scores more closely with those derived from guessed profiles.