pgo
PGO (Profile-Guided Optimisation)
Purpose
Guide agents through the full PGO workflow: instrument build → representative workload → collect profile → optimised build, covering both GCC and Clang, plus BOLT for post-link optimisation.
Triggers
- "How do I use PGO to speed up my binary?"
- "What is profile-guided optimization and when should I use it?"
- "How do I use
-fprofile-generateand-fprofile-use?" - "My
-O3build isn't fast enough — what next?" - "How does BOLT differ from PGO?"
- "How do I collect representative profile data?"
Workflow
1. When to use PGO
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